Merge branch 'master' into production

resolves #595

.commitlintrc.json

@@ -0,0 +1,5 @@
+{
+  "rules": {
+    "body-max-line-length": [0, "always"]
+  }
+}

.github/CONTRIBUTING.md

@@ -1,16 +1,66 @@
 # How to Contribute
 
-I want to thank you for sparing a time to improve this project! Here are some guidelines for contributing：
+We'd like to thank you for sparing time to improve this project! Here are some guidelines for contributing：
 
-To ensure that the blog design is not confused, this project does not accept suggestions for design changes, such as color scheme, fonts, typography, etc. If your request is about an enhancement, it is recommended to first submit a [`Feature Request`](https://github.com/cotes2020/jekyll-theme-chirpy/issues/new?labels=enhancement&template=feature_request.md) issue to discuss whether your idea fits the project. 
+To ensure that the blog design is not confused, this project does not accept suggestions for design changes, such as color scheme, fonts, typography, etc. If your request is about an enhancement, it is recommended to first submit a [_Feature Request_](https://github.com/cotes2020/jekyll-theme-chirpy/issues/new?labels=enhancement&template=feature_request.md) issue to discuss whether your idea fits the project.
+
+## Basic Process
 
 Generally, contribute to the project by:
 
 1. Fork this project on GitHub and clone it locally.
-2. Create a new branch from `master` and give it a descriptive name (e.g., `my-new-feature`, `fix-a-bug`).
-3. After completing the development, commit and push to remote.
-4. Submit a new pull request.
+2. Create a new branch from the default branch and give it a descriptive name (format: `feature/<add-new-feat>` / `fix/<fix-a-bug>`).
+3. After completing the development, submit a new _Pull Request_. Note that the commit message must follow the [Conventional Commits](https://www.conventionalcommits.org/en/v1.0.0/), otherwise it will fail the PR check.
+
+## Modifying JavaScript
+
+If your contribution involves JavaScript modification, please read the following sections.
+
+### Inline Scripts
+
+If you need to add comments to the inline JavaScript (the code between the HTML tags `<script>` and `</script>`), please use `/* */` instead of two slashes `//`. Because the HTML will be compressed by [jekyll-compress-html](https://github.com/penibelst/jekyll-compress-html) during deployment, but it cannot handle the `//` properly, which will disrupt the structure of the compressed HTML.
+
+### External Scripts
+
+If you need to add/change/delete the JavaScript in the directory `_javascript/`, setting up [`Node.js`](https://nodejs.org/) and [`npx`](https://www.npmjs.com/package/npx) is a requirement. And then install the development dependencies:
+
+```console
+$ npm i
+```
+
+During JavaScript development, real-time debugging can be performed through the following commands:
+
+Firstly, start a Jekyll server:
+
+```console
+$ bash tools/run.sh
+```
+
+And then open a new terminal tab and run:
+
+```console
+# Type 'Ctrl + C' to stop
+$ npx gulp dev
+```
+
+After debugging, run the command `npx gulp` (without any argument) will automatically output the compressed files to the directory `assets/js/dist/`.
+
+## Verify the commit messages
+
+If you want to make sure your commits pass the CI check, you can refer to the following steps.
+
+Install `commitlint` & `husky`:
+
+```console
+$ npm i -g @commitlint/{cli,config-conventional} husky
+```
+
+And then enable `husky`:
+
+```console
+$ husky install
+```
 
 ---
 
-:tada: Your volunteering will make the open source world more beautiful, thanks again! :tada:
+:tada: Your volunteering will make the open-source world more beautiful, thanks again! :tada:

.github/FUNDING.yml

@@ -1,3 +1,2 @@
-custom:
-  - https://www.buymeacoffee.com/coteschung
-  - https://cotes.gitee.io/alipay-wechat-donation
+ko_fi: coteschung
+custom: https://cotes.gitee.io/alipay-wechat-donation

.github/ISSUE_TEMPLATE/bug_report.md

@@ -6,12 +6,15 @@ about: Create a report to help us improve
 <!-- NOTE: Please maintain all sections, otherwise the issue will be automatically closed :) -->
 
 ## Checklist
-<!-- Please complete the following list of tasks, and then check it by change the "[ ]" to "[x]" -->
-- [ ] I have read the [tutorials](https://chirpy.cotes.info/categories/tutorial/) and know the correct effect of the functional design.
-- [ ] There are no similar reports on existing issues (including closed ones).
-- [ ] I found the bug on the latest code of `master` branch.
+
+<!-- Please complete the following list of tasks, and then check it by changing the "[ ]" to "[x]" -->
+
+- [ ] I have read the [tutorials](https://cotes2020.github.io/chirpy-demo/categories/tutorial/) and know the correct effect of the functional design.
+- [ ] There are no similar reports on [existing issues](https://github.com/cotes2020/jekyll-theme-chirpy/issues?q=is%3Aissue) (including closed ones).
+- [ ] I found the bug on the latest code of the `master` branch.
 
 ## Describe the bug
+
 <!-- A clear and concise description of what the bug is. -->
 
 ### To Reproduce
@@ -25,25 +28,32 @@ Steps to reproduce the behavior:
 -->
 
 ### Expected behavior
+
 <!-- A clear and concise description of what you expected to happen. -->
 
 ### Screenshots
+
 <!-- If applicable, add screenshots to help explain your problem. -->
 
-### Software
-<!-- Please complete the following information -->
-- Ruby version: <!-- by running: `ruby -v` -->
-- Gem version: <!-- by running: `gem -v`-->
-- Bundler version: <!-- by running: `bundle -v`-->
-- Jekyll version: <!-- by running: `bundle list | grep " jekyll "` -->
+### Environment
+
+| Command                           | Version |
+|-----------------------------------|---------|
+| `ruby -v`                         |         |
+| `gem -v`                          |         |
+| `bundle -v`                       |         |
+| `bundle exec jekyll -v`           |         |
+| `bundle info jekyll-theme-chirpy` |         |
 
 ### Desktop
+
 <!-- If necessary, uncomment and fill in the following list:
 - OS: [e.g. macOS 10.15.6]
 - Browser: [e.g. Chrome 85.0.4183.83 (64-bit)]
 -->
 
 ### Smartphone
+
 <!-- If necessary, uncomment and fill in the following list:
 - Device: [e.g. iPhone 6]
 - OS: [e.g. iOS 13.6.1]
@@ -51,4 +61,5 @@ Steps to reproduce the behavior:
 -->
 
 ### Additional context
+
 <!-- Add any other context about the problem here. -->

.github/ISSUE_TEMPLATE/feature_request.md

@@ -7,24 +7,29 @@ labels: enhancement
 <!-- NOTE: Please maintain all sections, otherwise the issue will be automatically closed :) -->
 
 ## Checklist
-<!-- Please complete the following list of tasks, and then check it by change the "[ ]" to "[x]" -->
+
+<!-- Please complete the following list of tasks, and then check it by changing the "[ ]" to "[x]" -->
 - [ ] I have read the [contributing guidelines](https://github.com/cotes2020/jekyll-theme-chirpy/blob/master/.github/CONTRIBUTING.md).
-- [ ] There are no similar request on existing issues (including closed ones).
+- [ ] There is no similar request on [existing issues](https://github.com/cotes2020/jekyll-theme-chirpy/issues?q=is%3Aissue) (including closed ones).
 - [ ] I have read the [project progress](https://github.com/cotes2020/jekyll-theme-chirpy/projects) and know the current progress of the project.
 - [ ] I was in the `master` branch of the latest code.
 
 
 ## Is your feature request related to a problem? Please describe
+
 <!-- A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] -->
 
 
 ## Describe the solution you'd like
+
 <!-- A clear and concise description of what you want to happen. -->
 
 
 ## Describe alternatives you've considered
+
 <!-- A clear and concise description of any alternative solutions or features you've considered. -->
 
 
 ## Additional context
+
 <!-- Add any other context or screenshots about the feature request here. -->

.github/ISSUE_TEMPLATE/question.md

@@ -1,6 +1,6 @@
 ---
 name: Question
-about: Ask what ever you want
+about: Ask whatever you want
 labels: question
 ---
 
@@ -8,12 +8,13 @@ labels: question
 
 ## Checklist
 
-<!-- Please complete the following list of tasks, and then check it by change the "[ ]" to "[x]" -->
+<!-- Please complete the following list of tasks, and then check it by changing the "[ ]" to "[x]" -->
 
-- [ ] I have read the [tutorials](https://chirpy.cotes.info/categories/tutorial/) and know the correct effect of the functional design.
-- [ ] There are no similar question on existing issues (including closed ones).
-- [ ] I searched the Internet for related problems, but still couldn't solve it.
-- [ ] My question is based on the latest code of `master` branch.
+- [ ] I have read the [newlest tutorials](https://cotes2020.github.io/chirpy-demo/categories/tutorial/) and know the correct effect of the functional design.
+- [ ] There is no similar question on [existing issues](https://github.com/cotes2020/jekyll-theme-chirpy/issues?q=is%3Aissue) (including closed ones).
+- [ ] I have tried to find the answer on [Jekyll Forum](https://talk.jekyllrb.com/) and [StackOverflow](https://stackoverflow.com/questions/tagged/jekyll).
+- [ ] My question is based on the latest code of the `master` branch.
 
 ## Description
-<!-- Please describe your question in detial. -->
+
+<!-- Please describe your question in detail. -->

.github/PULL_REQUEST_TEMPLATE.md

@@ -2,9 +2,9 @@
 
 <!-- 
 Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.
--->
 
 e.g. Fixes #(issue)
+-->
 
 ## Type of change
 
@@ -22,23 +22,21 @@ Please select the desired item checkbox and change it to "[x]", then delete opti
 Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration
 -->
 
-- [ ] I have run `bash ./tools/test.sh --build` (at the root of the project) locally and passed
+- [ ] I have run `bash ./tools/deploy.sh --dry-run` (at the root of the project) locally and passed
 - [ ] I have tested this feature in the browser
 
 ### Test Configuration
 
 - Browser type & version:
 - Operating system:
-- Bundler version:
-- Ruby version:
-- Jekyll version:
+- Ruby version: <!-- by running: `ruby -v` -->
+- Bundler version: <!-- by running: `bundle -v`-->
+- Jekyll version: <!-- by running: `bundle list | grep " jekyll "` -->
 
 ### Checklist
+
 <!-- Select checkboxes by change the "[ ]" to "[x]" -->
-- [ ] My code follows the [Google style guidelines](https://google.github.io/styleguide/)
-- [ ] I have performed a self-review of my own code
-- [ ] I have commented my code, particularly in hard-to-understand areas
+- [ ] I have performed a self-review of my code
+- [ ] I have commented on my code, particularly in hard-to-understand areas
 - [ ] I have made corresponding changes to the documentation
 - [ ] My changes generate no new warnings
-- [ ] I have added tests that prove my fix is effective or that my feature works
-- [ ] Any dependent changes have been merged and published in downstream modules

.github/workflows/ci.yml

@@ -1,16 +1,16 @@
-name: 'Continuous Integration'
+name: 'CI'
 on:
   push:
     branches-ignore:
-      - 'production'
+      - 'release/**'
+      - 'docs'
     tags-ignore:
-      - '*'
+      - '**'
     paths-ignore:
       - '.github/**'
       - '!.github/workflows/ci.yml'
       - '.travis.yml'
       - '.gitignore'
-      - 'docs/**'
       - 'README.md'
       - 'LICENSE'
   pull_request:
@@ -18,30 +18,20 @@ on:
       - '**'
 
 jobs:
-  ci:
-    runs-on: ${{ matrix.os }}
+  build:
+    runs-on: ubuntu-latest
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest]
-
+        ruby: [2.5, 2.6, 2.7, 3]
     steps:
       - name: Checkout
         uses: actions/checkout@v2
         with:
           fetch-depth: 0  # for posts's lastmod
-
       - name: Setup Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.7
+          ruby-version: ${{ matrix.ruby }}
           bundler-cache: true
-
-      - name: Build Site
-        env:
-          JEKYLL_ENV: production
-        run: |
-          bundle exec jekyll b
-
       - name: Test Site
-        run: |
-          bash tools/test.sh
+        run: bash tools/deploy.sh --dry-run

.github/workflows/commitlint.yml

@@ -0,0 +1,11 @@
+name: Lint Commit Messages
+on: pull_request
+
+jobs:
+  commitlint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - uses: wagoid/commitlint-github-action@v4

.github/workflows/issue-interceptor.yml

@@ -0,0 +1,18 @@
+name: Intercept bad issues
+
+on:
+  issues:
+    types: [opened, edited]
+
+jobs:
+  auto_close_issues:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: Auto close issues that did not follow template
+        uses: lucasbento/auto-close-issues@v1.0.2
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          issue-close-message: ":wave: Hi @${issue.user.login},\n\nThis issue is being automatically closed because it does not follow the issue template. Please DO NOT open another similar issue, try to edit the current issue according to the template, then it will be reopened automatically."
+          closed-issues-label: "🙁 Not following issue template"

.github/workflows/issue-pr-interceptor.yml

@@ -1,20 +0,0 @@
-name: "Intercept bad issue/PRs"
-
-on:
-  issues:
-    types: [opened]
-  pull_request:
-    types: [opened]
-
-jobs:
-  autoclose:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Auto close issues/pr that did not follow template
-      uses: roots/issue-closer@v1.1
-      with:
-        repo-token: ${{ secrets.GITHUB_TOKEN }}
-        issue-pattern: "(\\[x\\]|\\[X\\]) I have read"
-        issue-close-message: ":wave: Hi @${issue.user.login},\n\nThis issue is being automatically closed because it does not follow the issue template."
-        pr-pattern: "(\\[x\\]|\\[X\\]) (Bug fix|New feature|Breaking change|Documentation update)|@dependabot"
-        pr-close-message: ":wave: Hi @${pull_request.user.login},\n\nThis PR is being automatically closed because it does not follow the PR template."

.github/workflows/pages-deploy.yml.hook

@@ -25,29 +25,5 @@ jobs:
           ruby-version: 2.7
           bundler-cache: true
 
-      - name: Check baseurl
-        run: |
-          baseurl="$(grep '^baseurl:' _config.yml | sed "s/.*: *//;s/['\"]//g;s/#.*//")"
-          if [[ -n $baseurl ]]; then
-            echo "BASE_URL=$baseurl" >> $GITHUB_ENV
-          fi
-
-      - name: Build Site
-        env:
-          JEKYLL_ENV: production
-        run: |
-          bundle exec jekyll b -d "_site$BASE_URL"
-
-      - name: Test Site
-        run: |
-          bash tools/test.sh
-
       - name: Deploy
-        run: |
-          if [[ -n $BASE_URL ]]; then
-            mv _site$BASE_URL _site-rename
-            rm -rf _site
-            mv _site-rename _site
-          fi
-
-          bash tools/deploy.sh
+        run: bash tools/deploy.sh

.gitignore

@@ -1,6 +1,12 @@
 # hidden files
 .*
-!.github
+!.git*
+!.editorconfig
+!.nojekyll
+!.travis.yml
+!.husky
+!.commitlintrc.json
+!.versionrc.json
 
 # bundler cache
 _site

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "assets/lib"]
+	path = assets/lib
+	url = https://github.com/cotes2020/chirpy-static-assets.git

.husky/commit-msg

@@ -0,0 +1,4 @@
+#!/bin/sh
+. "$(dirname "$0")/_/husky.sh"
+
+npx --no -- commitlint -x $(npm root -g)/@commitlint/config-conventional --edit

.nojekyll

@@ -0,0 +1 @@
+

.travis.yml

@@ -1,49 +1,41 @@
 os: linux
 dist: bionic
+language: ruby
+rvm: 2.7.0
 
-language: minimal
+addons:
+  apt:
+    packages:
+      - libcurl4-openssl-dev  # to avoid SSL error (for htmlproofer)
+
+# Overriding to drop the `--development` flag which requires the Gemfile.lock at build
+install: bundle install --jobs=3 --retry=3 --path=vendor/bundle
+
+before_script: git -C "$HOME" clone "$BUILDER_REPO" --depth=1 -q
 
 jobs:
   include:
-
-    - name: CD
-      language: ruby
-      rvm: 2.7.0
-
-      addons:
-        apt:
-          packages:
-            # required to avoid SSL error (for htmlproofer)
-            - libcurl4-openssl-dev
-
-      cache:
-        directories:
-          - $TRAVIS_BUILD_DIR/vendor/bundle
-
-      before_install:
-        # match the Gemfile.lock, travis' bundler is 2.1.2
-        - gem install bundler:2.2.4
-        - bundle config path 'vendor/bundle'
-
-      install:
-        # overriding to drop the travis `--development` flag
-        - bundle install --jobs=3 --retry=3
-
-      script:
-        - eval "$BUILD_CMD"
-
+    - stage: Upgrade
       git:
-        depth: false # for posts' lastmod
+        depth: false  # for posts' lastmod
+      script: eval "$BUILD_CMD"
+    - stage: Starter
+      language: minimal
+      install: true   # skip install step
+      script: eval "$FLUSH_STARTER"
+    - stage: Docs
+      cache: bundler
+      git:
+        depth: false  # for posts' lastmod
+      script: eval "$DOCS_CMD"
 
-    - name: Flush Starter
-      script:
-        - eval "$FLUSH_STARTER"
-
-before_script:
-  - git -C "$HOME" clone "$BUILDER_REPO" --depth=1 -q
-
-branches:
-  only: /.*-stable$/
+stages:
+  - name: Upgrade
+    if: branch = production
+  - name: Starter
+    if: branch = production
+  - name: Docs
+    if: branch = docs
 
 notifications:
   email:

.versionrc.json

@@ -0,0 +1,20 @@
+{
+  "skip": {
+    "commit": true,
+    "tag": true
+  },
+  "types": [
+    {
+      "type": "feat",
+      "section": "Features"
+    },
+    {
+      "type": "fix",
+      "section": "Bug Fixes"
+    },
+    {
+      "type": "perf",
+      "section": "Improvements"
+    }
+  ]
+}

CHANGELOG.md

@@ -0,0 +1,44 @@
+# Changelog
+
+All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
+
+## [5.2.0](https://github.com/cotes2020/jekyll-theme-chirpy/compare/v5.1.0...v5.2.0) (2022-06-09)
+
+
+### Features
+
+* add es-ES support to locales ([#533](https://github.com/cotes2020/jekyll-theme-chirpy/issues/533)) ([efe75ad](https://github.com/cotes2020/jekyll-theme-chirpy/commit/efe75adf2784956afb7a0b67f6634b146d9cb03b))
+* add fr-FR support to locales ([#582](https://github.com/cotes2020/jekyll-theme-chirpy/issues/582)) ([94e8144](https://github.com/cotes2020/jekyll-theme-chirpy/commit/94e81447afa457b1a6b7e8f487c47502803556d7))
+* add Vietnamese locale ([#517](https://github.com/cotes2020/jekyll-theme-chirpy/issues/517)) ([171463d](https://github.com/cotes2020/jekyll-theme-chirpy/commit/171463d76da9b7bc25dd327b8f0a868ea79e388b))
+* add pt-BR support to locales ([c2c503f](https://github.com/cotes2020/jekyll-theme-chirpy/commit/c2c503f63336884282b6bda4ec0703d6ae76771b))
+* add option to turn off PWA ([#527](https://github.com/cotes2020/jekyll-theme-chirpy/issues/527)) ([106c981](https://github.com/cotes2020/jekyll-theme-chirpy/commit/106c981bac71e7434204a77e1f0c9c61d6eb1509))
+* **PWA:** add Service Worker update notification ([d127183](https://github.com/cotes2020/jekyll-theme-chirpy/commit/d127183b9774f6321e409acdb66bf8a85d8814be))
+* support showing description of preview image ([2bd6efa](https://github.com/cotes2020/jekyll-theme-chirpy/commit/2bd6efa95a174ac44e30a3af1e57e6f40d6e0e3a))
+
+
+### Bug Fixes
+
+* alt is not a valid attribute for 'a' tag ([58928db](https://github.com/cotes2020/jekyll-theme-chirpy/commit/58928dbc9068db4e4cda4371eeae1865920dce6a))
+* assets URL is missing `baseurl` in self-hosted mode ([#591](https://github.com/cotes2020/jekyll-theme-chirpy/issues/591)) ([54124d5](https://github.com/cotes2020/jekyll-theme-chirpy/commit/54124d5134995fce52e4c2fc0a5d4d1743d6264d))
+* correct the `twitter:creator` of Twitter summary card ([96a16c8](https://github.com/cotes2020/jekyll-theme-chirpy/commit/96a16c868ede51e7dfa412de63ffa1e5a49add7f))
+* correctly URL encode share links ([4c1c8d8](https://github.com/cotes2020/jekyll-theme-chirpy/commit/4c1c8d8b0eacecbbaa2d522bbdd6430f350ff760)), closes [#496](https://github.com/cotes2020/jekyll-theme-chirpy/issues/496)
+* follow paginate_path config for pagination ([6900d9f](https://github.com/cotes2020/jekyll-theme-chirpy/commit/6900d9f2bc9380cbda4babf611c6eeff345291af))
+* force checkout of `gh-pages` branch ([#544](https://github.com/cotes2020/jekyll-theme-chirpy/issues/544)) ([5402523](https://github.com/cotes2020/jekyll-theme-chirpy/commit/5402523ae52a3740bcc15df0b226b2612644945d))
+* horizontal scroll for long equations ([#545](https://github.com/cotes2020/jekyll-theme-chirpy/issues/545)) ([30787fc](https://github.com/cotes2020/jekyll-theme-chirpy/commit/30787fc4cf151e955bb7afc26dfd859f1a06fce6))
+* p is not allowed in span ([4f590e2](https://github.com/cotes2020/jekyll-theme-chirpy/commit/4f590e2bba0639751771211bc0d357828ae70404))
+* remove whitespace from avatar URL ([#537](https://github.com/cotes2020/jekyll-theme-chirpy/issues/537)) ([0542b51](https://github.com/cotes2020/jekyll-theme-chirpy/commit/0542b5149c8287dca60e37f46ee36f31b43455e4))
+* resume the preview image SEO tag ([#529](https://github.com/cotes2020/jekyll-theme-chirpy/issues/529)) ([b8d1bcd](https://github.com/cotes2020/jekyll-theme-chirpy/commit/b8d1bcd3dea0abd1afef7ef154a4501fbb18938d))
+* script code should be in head or body, not in between ([2103191](https://github.com/cotes2020/jekyll-theme-chirpy/commit/2103191b2faf714a8e4418c7c347a1f942b51af8))
+* spurious header closing tags ([59e9557](https://github.com/cotes2020/jekyll-theme-chirpy/commit/59e955745f02f9b57c65af70b0979cd4a98bf53f))
+* table bypass refactoring when it contains IAL ([#519](https://github.com/cotes2020/jekyll-theme-chirpy/issues/519)) ([5d85ccb](https://github.com/cotes2020/jekyll-theme-chirpy/commit/5d85ccb9943aac88dbbefebe1c2234cdcbae5c53))
+* **theme mode:** `SCSS` syntax error ([#588](https://github.com/cotes2020/jekyll-theme-chirpy/issues/588)) ([76a1b6a](https://github.com/cotes2020/jekyll-theme-chirpy/commit/76a1b6a068c369138422dcd18ba08ec8cc3749a6))
+* use `jsonify` to generate valid json ([#521](https://github.com/cotes2020/jekyll-theme-chirpy/issues/521)) ([dd9d5a7](https://github.com/cotes2020/jekyll-theme-chirpy/commit/dd9d5a7207b746342d07176d8969dc4f2c380bf2))
+* when the `site.img_cdn` is set to the local path, the preview-image path loses the `baseurl` ([9cefe58](https://github.com/cotes2020/jekyll-theme-chirpy/commit/9cefe58993d9ea3a3a28424e7ffd8e0911567c5c))
+
+
+### Improvements
+
+* avoid post pageviews from shifting while loading ([135a16f](https://github.com/cotes2020/jekyll-theme-chirpy/commit/135a16f13ee783d9308669ff9a824847a73c951c))
+* avoid the layout shift for post datetime ([6d35f5f](https://github.com/cotes2020/jekyll-theme-chirpy/commit/6d35f5f8da044cfad071628bb53776de03efaae4))
+* **categories:** support singular and plural forms of locale ([#595](https://github.com/cotes2020/jekyll-theme-chirpy/issues/595)) ([35cadf9](https://github.com/cotes2020/jekyll-theme-chirpy/commit/35cadf969dd0161ee62503e242c545f006f7072b))
+* improve the responsive design for ultrawide screens ([#540](https://github.com/cotes2020/jekyll-theme-chirpy/issues/540)) ([5d6e8c5](https://github.com/cotes2020/jekyll-theme-chirpy/commit/5d6e8c5ef6aa71b4d2600c5305f6e8ba540557f7))

Gemfile

@@ -17,3 +17,6 @@ end
 
 # Performance-booster for watching directories on Windows
 gem "wdm", "~> 0.1.1", :install_if => Gem.win_platform?
+
+# Jekyll <= 4.2.0 compatibility with Ruby 3.0
+gem "webrick", "~> 1.7"

README.md

@@ -1,205 +1,97 @@
-# Chirpy
+<div align="center">
 
-Language: English | [简体中文](https://github.com/cotes2020/jekyll-theme-chirpy/blob/master/docs/README.zh-CN.md)
+  # Chirpy Jekyll Theme
 
-[![Gem Version](https://img.shields.io/gem/v/jekyll-theme-chirpy?color=brightgreen)](https://rubygems.org/gems/jekyll-theme-chirpy)
-[![Build Status](https://github.com/cotes2020/jekyll-theme-chirpy/workflows/build/badge.svg?branch=master&event=push)](https://github.com/cotes2020/jekyll-theme-chirpy/actions?query=branch%3Amaster+event%3Apush)
-[![Codacy Badge](https://api.codacy.com/project/badge/Grade/8220b926db514f13afc3f02b7f884f4b)](https://app.codacy.com/manual/cotes2020/jekyll-theme-chirpy?utm_source=github.com&utm_medium=referral&utm_content=cotes2020/jekyll-theme-chirpy&utm_campaign=Badge_Grade_Dashboard)
-[![GitHub license](https://img.shields.io/github/license/cotes2020/jekyll-theme-chirpy.svg)](https://github.com/cotes2020/jekyll-theme-chirpy/blob/master/LICENSE)
-[![996.icu](https://img.shields.io/badge/link-996.icu-%23FF4D5B.svg)](https://996.icu)
+  A minimal, responsive, and powerful Jekyll theme for presenting professional writing.
 
-A minimal, sidebar, responsive web design Jekyll theme that focuses on text presentation. Designed to help you record and share your knowledge easily. [Live Demo »](https://chirpy.cotes.info)
+  [![Gem Version](https://img.shields.io/gem/v/jekyll-theme-chirpy?color=brightgreen)](https://rubygems.org/gems/jekyll-theme-chirpy)
+  [![Build Status](https://github.com/cotes2020/jekyll-theme-chirpy/workflows/build/badge.svg?branch=master&event=push)](https://github.com/cotes2020/jekyll-theme-chirpy/actions?query=branch%3Amaster+event%3Apush)
+  [![Codacy Badge](https://app.codacy.com/project/badge/Grade/4e556876a3c54d5e8f2d2857c4f43894)](https://www.codacy.com/gh/cotes2020/jekyll-theme-chirpy/dashboard?utm_source=github.com&amp;utm_medium=referral&amp;utm_content=cotes2020/jekyll-theme-chirpy&amp;utm_campaign=Badge_Grade)
+  [![GitHub license](https://img.shields.io/github/license/cotes2020/jekyll-theme-chirpy.svg)](https://github.com/cotes2020/jekyll-theme-chirpy/blob/master/LICENSE)
+  [![996.icu](https://img.shields.io/badge/link-996.icu-%23FF4D5B.svg)](https://996.icu)
 
-[![Devices Mockup](https://cdn.jsdelivr.net/gh/cotes2020/chirpy-images/commons/devices-mockup.png)](https://chirpy.cotes.info)
+  [**Live Demo →**](https://cotes2020.github.io/chirpy-demo)
+
+  [![Devices Mockup](https://raw.githubusercontent.com/cotes2020/chirpy-images/main/commons/devices-mockup.png)](https://cotes2020.github.io/chirpy-demo)
+
+</div>
 
 ## Features
 
+- Localized Layout
+- Dark/Light Theme Mode
 - Pinned Posts
-- Configurable theme mode
-- Double-level Categories
-- Last modified date for posts
+- Hierarchical Categories
+- Last Modified Date for Posts
 - Table of Contents
-- Automatically recommend related posts
-- Syntax highlighting
-- Mathematical expressions
-- Mermaid diagram & flowchart
+- Auto-generated Related Posts
+- Syntax Highlighting
+- Mathematical Expressions
+- Mermaid Diagram & Flowchart
+- Disqus/Utterances/Giscus Comments
 - Search
 - Atom Feeds
-- Disqus Comments
 - Google Analytics
-- GA Pageviews reporting (Advanced)
-- SEO and Performance Optimization
+- GA Pageviews Reporting
+- SEO & Performance Optimization
 
-## Prerequisites
 
-Follow the [Jekyll Docs](https://jekyllrb.com/docs/installation/) to complete the installation of `Ruby`, `RubyGems`, `Jekyll` and `Bundler`.
+## Quick Start
 
-## Installation
+Before starting, please follow the instructions in the [Jekyll Docs](https://jekyllrb.com/docs/installation/) to complete the installation of `Ruby`, `RubyGems`, `Jekyll`, and `Bundler`. In addition, [Git](https://git-scm.com/) is also required to be installed.
 
-There are two ways to get the theme:
+### Step 1. Creating a New Site
 
-- **Install from RubyGems** - Easy to update, isolate irrelevant project files so you can focus on writing.
-- **Fork on GitHub** - Convenient for custom development, but difficult to update, only suitable for web developers.
+Create a new repository from the [**Chirpy Starter**](https://github.com/cotes2020/chirpy-starter/generate) and name it `<GH_USERNAME>.github.io`, where `GH_USERNAME` represents your GitHub username.
 
-### Installing the Theme Gem
+### Step 2. Installing Dependencies
 
-Add this line to your Jekyll site's `Gemfile`:
-
-```ruby
-gem "jekyll-theme-chirpy"
-```
-
-And add this line to your Jekyll site's `_config.yml`:
-
-```yaml
-theme: jekyll-theme-chirpy
-```
-
-And then execute:
+Before running for the first time, go to the root directory of your site, and install dependencies as follows:
 
 ```console
 $ bundle
 ```
 
-Finally, copy the required files from the theme's gem (for detailed files, see [starter project][starter]) to your Jekyll site.
+### Step 3. Running Local Server
 
-> **Hint**: To locate the installed theme’s gem, execute:
->
-> ```console
-> $ bundle info --path jekyll-theme-chirpy
-> ```
-
-Or you can [**use the starter template**][use-starter] to create a Jekyll site to save time copying files from the theme's gem. We have prepared everything for you there!
-
-### Fork on GitHub
-
-[Fork **Chirpy**](https://github.com/cotes2020/jekyll-theme-chirpy/fork) on GitHub and then clone your fork to local. (Please note that the default branch code is in development.  If you want the blog to be stable, please switch to the [latest tag](https://github.com/cotes2020/jekyll-theme-chirpy/tags) and start writing.)
-
-Install gem dependencies by:
-
-```console
-$ bundle
-```
-
-And then execute:
-
-```console
-$ bash tools/init.sh
-```
-
-> **Note**: If you don't plan to deploy your site on GitHub Pages, append parameter option `--no-gh` at the end of the above command.
-
-What it does is:
-
-1. Remove some files or directories from your repository:
-    - `.travis.yml`
-    - files under `_posts`
-    - folder `docs`
-
-2. If you use the `--no-gh` option, the directory `.github` will be deleted. Otherwise, setup the GitHub Action workflow by removing the extension `.hook` of `.github/workflows/pages-deploy.yml.hook`, and then remove the other files and directories in the folder `.github`.
-
-3. Automatically create a commit to save the changes.
-
-## Usage
-
-### Configuration
-
-Update the variables of `_config.yml` as needed. Some of them are typical options:
-
-- `url`
-- `avatar`
-- `timezone`
-- `lang`
-
-### Running Local Server
-
-You may want to preview the site contents before publishing, so just run it by:
+Run the following command in the root directory of the site:
 
 ```console
 $ bundle exec jekyll s
 ```
 
-Or run the site on Docker with the following command:
+Or run with Docker:
 
-```terminal
+```console
 $ docker run -it --rm \
     --volume="$PWD:/srv/jekyll" \
     -p 4000:4000 jekyll/jekyll \
     jekyll serve
 ```
 
-Open a browser and visit to _<http://localhost:4000>_.
-
-### Deployment
-
-Before the deployment begins, checkout the file `_config.yml` and make sure the `url` is configured correctly. Furthermore, if you prefer the [**project site**](https://help.github.com/en/github/working-with-github-pages/about-github-pages#types-of-github-pages-sites) and don't use a custom domain, or you want to visit your website with a base URL on a web server other than **GitHub Pages**, remember to change the `baseurl` to your project name that starting with a slash, e.g, `/project-name`.
-
-Now you can choose ONE of the following methods to deploy your Jekyll site.
-
-#### Deploy on GitHub Pages
-
-For security reasons, GitHub Pages build runs on `safe` mode, which restricts us from using plugins to generate additional page files. Therefore, we can use **GitHub Actions** to build the site, store the built site files on a new branch, and use that branch as the source of the GH Pages service.
-
-Quickly check the files needed for GitHub Actions build:
-
-- Ensure your Jekyll site has the file `.github/workflows/pages-deploy.yml`. Otherwise, create a new one and fill in the contents of the [workflow file][workflow], and the value of the `on.push.branches` should be the same as your repo's default branch name.
-- Ensure your Jekyll site has file `tools/test.sh` and `tools/deploy.sh`. Otherwise, copy them from this repo to your Jekyll site.
-
-And then rename your repository to `<GH-USERNAME>.github.io` on GitHub.
-
-Now publish your Jekyll site by:
-
-1. Push any commit to remote to trigger the GitHub Actions workflow. Once the build is complete and successful, a new remote branch named `gh-pages` will appear to store the built site files.
-
-2. Browse to your repo's landing page on GitHub and select the branch `gh-pages` as the [publishing source](https://docs.github.com/en/github/working-with-github-pages/configuring-a-publishing-source-for-your-github-pages-site) through _Settings_ → _Options_ → _GitHub Pages_:
-
-    ![gh-pages-sources](https://cdn.jsdelivr.net/gh/cotes2020/chirpy-images/posts/20190809/gh-pages-sources.png)
-
-3. Visit your website at the address indicated by GitHub.
-
-#### Deploy on Other Platforms
-
-On platforms other than GitHub, we cannot enjoy the convenience of **GitHub Actions**. Therefore, we should build the site locally (or on some other 3rd-party CI platform) and then put the site files on the server.
-
-Go to the root of the source project, build your site by:
-
-```console
-$ JEKYLL_ENV=production bundle exec jekyll b
-```
-
-Or build the site with Docker by:
-
-```terminal
-$ docker run -it --rm \
-    --env JEKYLL_ENV=production \
-    --volume="$PWD:/srv/jekyll" \
-    jekyll/jekyll \
-    jekyll build
-```
-
-Unless you specified the output path, the generated site files will be placed in folder `_site` of the project's root directory. Now you should upload those files to your web server.
+After a while, navigate to the site at <http://localhost:4000>.
 
 ## Documentation
 
-For more details and a better reading experience, please check out the [tutorials on the demo site](https://chirpy.cotes.info/categories/tutorial/). In the meanwhile, a copy of the tutorial is also available on the [Wiki](https://github.com/cotes2020/jekyll-theme-chirpy/wiki).
+For more details on usage, please refer to the tutorial on the [demo website](https://cotes2020.github.io/chirpy-demo/) / [wiki](https://github.com/cotes2020/jekyll-theme-chirpy/wiki). Note that the tutorial is based on the [latest tag](https://github.com/cotes2020/jekyll-theme-chirpy/tags), and the features of the default branch are usually ahead of the documentation.
 
 ## Contributing
 
-The old saying, "Two heads are better than one." Consequently, welcome to report bugs, improve code quality or submit a new feature. For more information, see [contributing guidelines](.github/CONTRIBUTING.md).
+Welcome to report bugs, improve code quality or submit a new feature. For more information, see [contributing guidelines](.github/CONTRIBUTING.md).
 
 ## Credits
 
-This theme is mainly built with [Jekyll](https://jekyllrb.com/) ecosystem, [Bootstrap](https://getbootstrap.com/), [Font Awesome](https://fontawesome.com/) and some other wonderful tools (their copyright information can be found in the relevant files). The avatar and favicon design comes from [Clipart Max](https://www.clipartmax.com/middle/m2i8b1m2K9Z5m2K9_ant-clipart-childrens-ant-cute/).
+This theme is mainly built with [Jekyll](https://jekyllrb.com/) ecosystem, [Bootstrap](https://getbootstrap.com/), [Font Awesome](https://fontawesome.com/) and some other wonderful tools (their copyright information can be found in the relevant files). The avatar and favicon design come from [Clipart Max](https://www.clipartmax.com/middle/m2i8b1m2K9Z5m2K9_ant-clipart-childrens-ant-cute/).
 
 :tada: Thanks to all the volunteers who contributed to this project, their GitHub IDs are on [this list](https://github.com/cotes2020/jekyll-theme-chirpy/graphs/contributors). Also, I won't forget those guys who submitted the issues or unmerged PR because they reported bugs, shared ideas, or inspired me to write more readable documentation.
 
-Last but not least, thank [JetBrains][jb] for providing the open source license.
+Last but not least, thank [JetBrains][jb] for providing the OSS development license.
 
 ## Sponsoring
 
 If you like this theme or find it helpful, please consider sponsoring me, because it will encourage and help me better maintain the project, I will be very grateful!
 
-[![Buy Me a Coffee](https://img.shields.io/badge/-Buy%20Me%20a%20Coffee-ff813f?logo=buy-me-a-coffee&logoColor=white)](https://www.buymeacoffee.com/coteschung)
+[![Ko-fi](https://img.shields.io/badge/-Buy%20Me%20a%20Coffee-ff5f5f?logo=ko-fi&logoColor=white)](https://ko-fi.com/coteschung)
 [![Wechat Pay](https://img.shields.io/badge/-Tip%20Me%20on%20WeChat-brightgreen?logo=wechat&logoColor=white)][cn-donation]
 [![Alipay](https://img.shields.io/badge/-Tip%20Me%20on%20Alipay-blue?logo=alipay&logoColor=white)][cn-donation]
 
@@ -207,10 +99,6 @@ If you like this theme or find it helpful, please consider sponsoring me, becaus
 
 This work is published under [MIT](https://github.com/cotes2020/jekyll-theme-chirpy/blob/master/LICENSE) License.
 
-[starter]: https://github.com/cotes2020/chirpy-starter
-[use-starter]: https://github.com/cotes2020/chirpy-starter/generate
-[workflow]: https://github.com/cotes2020/jekyll-theme-chirpy/blob/master/.github/workflows/pages-deploy.yml.hook
-
 <!-- ReadMe links -->
 
 [jb]: https://www.jetbrains.com/?from=jekyll-theme-chirpy

_config.yml

@@ -3,26 +3,30 @@
 # Import the theme
 theme: jekyll-theme-chirpy
 
-# Only if your site type is GitHub Project sites and doesn't have a custom domain,
-# change below value to '/projectname'.
+# Change the following value to '/PROJECT_NAME' ONLY IF your site type is GitHub Pages Project sites
+# and doesn't have a custom domain.
 baseurl: ''
 
-# the HTML language tag › https://www.w3.org/International/questions/qa-choosing-language-tags
-lang: en-US
+# The language of the webpage › http://www.lingoes.net/en/translator/langcode.htm
+# If it has the same name as one of the files in folder `_data/locales`, the layout language will also be changed,
+# otherwise, the layout language will use the default value of 'en'.
+lang: en
+
+# Additional parameters for datetime localization, optional. › https://github.com/iamkun/dayjs/tree/dev/src/locale
+prefer_datetime_locale:
 
 # Change to your timezone › http://www.timezoneconverter.com/cgi-bin/findzone/findzone
 timezone: Asia/Shanghai
 
 # jekyll-seo-tag settings › https://github.com/jekyll/jekyll-seo-tag/blob/master/docs/usage.md
-# --------------------------
+# ↓ --------------------------
+
 title: Chirpy                          # the main title
 
 tagline: A text-focused Jekyll theme   # it will display as the sub-title
 
 description: >-                        # used by seo meta and the atom feed
-  A minimal, portfolio, sidebar,
-  bootstrap Jekyll theme with responsive web design
-  and focuses on text presentation.
+  A minimal, responsive, and powerful Jekyll theme for presenting professional writing.
 
 # fill in the protocol & hostname for your site, e.g., 'https://username.github.io'
 url: ''
@@ -46,11 +50,13 @@ social:
     # - https://www.facebook.com/username
     # - https://www.linkedin.com/in/username
 
-google_site_verification: google_meta_tag_verification # change to your verification string
-# --------------------------
+google_site_verification:               # fill in to your verification string
+
+# ↑ --------------------------
+# The end of `jekyll-seo-tag` settings
 
 google_analytics:
-  id: ''              # fill in your Google Analytics ID
+  id:                 # fill in your Google Analytics ID
   # Google Analytics pageviews report settings
   pv:
     proxy_endpoint:   # fill in the Google Analytics superProxy endpoint of Google App Engine
@@ -74,17 +80,43 @@ theme_mode:   # [light|dark]
 # will be added to all image (site avatar & posts' images) paths starting with '/'
 #
 # e.g. 'https://cdn.com'
-img_cdn: ''
+img_cdn: 'https://raw.githubusercontent.com/cotes2020/chirpy-images/main'
 
 # the avatar on sidebar, support local or CORS resources
-avatar: https://cdn.jsdelivr.net/gh/cotes2020/chirpy-images/commons/avatar.jpg
+avatar: '/commons/avatar.jpg'
 
 # boolean type, the global switch for ToC in posts.
 toc: true
 
-disqus:
-  comments: false  # boolean type, the global switch for posts comments.
-  shortname: ''    # Fill with your Disqus shortname. › https://help.disqus.com/en/articles/1717111-what-s-a-shortname
+comments:
+  active:         # The global switch for posts comments, e.g., 'disqus'.  Keep it empty means disable
+  # The active options are as follows:
+  disqus:
+    shortname:    # fill with the Disqus shortname. › https://help.disqus.com/en/articles/1717111-what-s-a-shortname
+  # utterances settings › https://utteranc.es/
+  utterances:
+    repo:         # <gh-username>/<repo>
+    issue_term:   # < url | pathname | title | ...>
+  # Giscus options › https://giscus.app
+  giscus:
+    repo:             # <gh-username>/<repo>
+    repo_id:
+    category:
+    category_id:
+    mapping:          # optional, default to 'pathname'
+    input_position:   # optional, default to 'bottom'
+    lang:             # optional, default to the value of `site.lang`
+
+# Self-hosted static assets, optional › https://github.com/cotes2020/chirpy-static-assets
+assets:
+  self_host:
+    enabled:      # boolean, keep empty means false
+    # specify the Jekyll environment, empty means both
+    # only works if `assets.self_host.enabled` is 'true'
+    env:          # [development|production]
+
+pwa:
+  enabled: true   # the option for PWA feature
 
 paginate: 10
 
@@ -106,10 +138,8 @@ collections:
     output: true
     sort_by: order
 
-
 defaults:
-  -
-    scope:
+  - scope:
       path: ''          # An empty string here means all files in the project
       type: posts
     values:
@@ -119,19 +149,24 @@ defaults:
       # DO NOT modify the following parameter unless you are confident enough
       # to update the code of all other post links in this project.
       permalink: /posts/:title/
-  -
-    scope:
+  - scope:
       path: _drafts
     values:
       comments: false
-  -
-    scope:
+  - scope:
       path: ''
       type: tabs             # see `site.collections`
     values:
       layout: page
       permalink: /:title/
-      dynamic_title: true    # Hide title in mobile screens.
+  - scope:
+      path: assets/img/favicons
+    values:
+      swcache: true
+  - scope:
+      path: assets/js/dist
+    values:
+      swcache: true
 
 sass:
   style: compressed
@@ -149,12 +184,11 @@ exclude:
   - '*.gem'
   - '*.gemspec'
   - tools
-  - docs
   - README.md
   - LICENSE
   - gulpfile.js
   - node_modules
-  - '*.json'
+  - package*.json
 
 jekyll-archives:
   enabled: [categories, tags]

_data/assets/cross_origin.yml

@@ -0,0 +1,62 @@
+# CDNs
+
+cdns:
+  # Google Fonts
+  - url: https://fonts.googleapis.com
+  - url: https://fonts.gstatic.com
+    args: crossorigin
+  - url: https://fonts.googleapis.com
+  # jsDelivr CDN
+  - url: https://cdn.jsdelivr.net
+
+# fonts
+
+webfonts: https://fonts.googleapis.com/css2?family=Lato&family=Source+Sans+Pro:wght@400;600;700;900&display=swap
+
+# Libraries
+
+jquery:
+  js: https://cdn.jsdelivr.net/npm/jquery@3/dist/jquery.min.js
+
+bootstrap:
+  css: https://cdn.jsdelivr.net/npm/bootstrap@4/dist/css/bootstrap.min.css
+  js: https://cdn.jsdelivr.net/npm/bootstrap@4/dist/js/bootstrap.bundle.min.js
+
+bootstrap-toc:
+  css: https://cdn.jsdelivr.net/gh/afeld/bootstrap-toc@1.0.1/dist/bootstrap-toc.min.css
+  js: https://cdn.jsdelivr.net/gh/afeld/bootstrap-toc@1.0.1/dist/bootstrap-toc.min.js
+
+fontawesome:
+  css: https://cdn.jsdelivr.net/npm/@fortawesome/fontawesome-free@5.11.2/css/all.min.css
+
+search:
+  js: https://cdn.jsdelivr.net/npm/simple-jekyll-search@1.10.0/dest/simple-jekyll-search.min.js
+
+mermaid:
+  js: https://cdn.jsdelivr.net/npm/mermaid@8/dist/mermaid.min.js
+
+dayjs:
+  js:
+    common: https://cdn.jsdelivr.net/npm/dayjs@1/dayjs.min.js
+    locale: https://cdn.jsdelivr.net/npm/dayjs@1/locale/:LOCALE.min.js
+    relativeTime: https://cdn.jsdelivr.net/npm/dayjs@1/plugin/relativeTime.min.js
+    localizedFormat: https://cdn.jsdelivr.net/npm/dayjs@1/plugin/localizedFormat.min.js
+
+countup:
+  js: https://cdn.jsdelivr.net/npm/countup.js@1.9.3/dist/countUp.min.js
+
+magnific-popup:
+  css: https://cdn.jsdelivr.net/npm/magnific-popup@1/dist/magnific-popup.min.css
+  js: https://cdn.jsdelivr.net/npm/magnific-popup@1/dist/jquery.magnific-popup.min.js
+
+lozad:
+  js: https://cdn.jsdelivr.net/npm/lozad/dist/lozad.min.js
+
+clipboard:
+  js:  https://cdn.jsdelivr.net/npm/clipboard@2/dist/clipboard.min.js
+
+polyfill:
+  js: https://polyfill.io/v3/polyfill.min.js?features=es6
+
+mathjax:
+  js: https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-chtml.js

_data/assets/self_host.yml

@@ -0,0 +1,51 @@
+# fonts
+
+webfonts: /assets/lib/fonts/main.css
+
+# Libraries
+
+jquery:
+  js: /assets/lib/jquery-3.6.0/jquery.min.js
+
+bootstrap:
+  css: /assets/lib/bootstrap-4.6.1/bootstrap.min.css
+  js: /assets/lib/bootstrap-4.6.1/bootstrap.bundle.min.js
+
+bootstrap-toc:
+  css: /assets/lib/bootstrap-toc-1.0.1/bootstrap-toc.min.css
+  js: /assets/lib/bootstrap-toc-1.0.1/bootstrap-toc.min.js
+
+fontawesome:
+  css: /assets/lib/fontawesome-free-5.15.4/css/all.min.css
+
+search:
+  js: /assets/lib/simple-jekyll-search-1.10.0/simple-jekyll-search.min.js
+
+mermaid:
+  js: /assets/lib/mermaid-8.13.10/mermaid.min.js
+
+dayjs:
+  js:
+    common: /assets/lib/dayjs-1.10.7/dayjs.min.js
+    locale: /assets/lib/dayjs-1.10.7/locale/en.min.js
+    relativeTime: /assets/lib/dayjs-1.10.7/plugin/relativeTime.min.js
+    localizedFormat: /assets/lib/dayjs-1.10.7/plugin/localizedFormat.min.js
+
+countup:
+  js: /assets/lib/countup.js-1.9.3/countUp.min.js
+
+magnific-popup:
+  css: /assets/lib/magnific-popup-1.1.0/magnific-popup.css
+  js: /assets/lib/magnific-popup-1.1.0/jquery.magnific-popup.min.js
+
+lozad:
+  js: /assets/lib/lozad-1.16.0/lozad.min.js
+
+clipboard:
+  js: /assets/lib/clipboard-2.0.9/clipboard.min.js
+
+polyfill:
+  js: /assets/lib/polyfill-v3-es6/polyfill.min.js
+
+mathjax:
+  js: /assets/lib/mathjax-3.2.0/tex-chtml.js

_data/authors.yml

@@ -0,0 +1,17 @@
+## Template › https://github.com/jekyll/jekyll-seo-tag/blob/master/docs/advanced-usage.md#setting-author-url
+# -------------------------------------
+# {author_id}:
+#   name: {full name}
+#   twitter: {twitter_of_author}
+#   url: {homepage_of_author}
+# -------------------------------------
+
+cotes:
+  name: Cotes Chung
+  twitter: cotes2020
+  url: https://github.com/cotes2020/
+
+sille_bille:
+  name: Dinesh Prasanth Moluguwan Krishnamoorthy
+  twitter: dinesh_MKD
+  url: https://github.com/SilleBille/

_data/contact.yml

@@ -2,7 +2,7 @@
 
 -
   type: github
-  icon: 'fab fa-github-alt'
+  icon: 'fab fa-github'
 -
   type: twitter
   icon: 'fab fa-twitter'

_data/date_format.yml

@@ -1,7 +0,0 @@
-#  The date format
-
-tooltip: "%a, %b %e, %Y, %l:%M %p %z"
-
-post:
-  long: "%b %e, %Y"
-  short: "%b %e"

_data/label.yml

@@ -1,19 +0,0 @@
-# The label text of site.
-
-panel:
-  lastmod: Recent Update
-  trending_tags: Trending Tags
-  toc: Contents
-
-post:
-  relate_posts: Further Reading
-  share: Share
-  button:
-    next: Newer
-    previous: Older
-
-search_hint: Search   # text show on search bar
-
-pin_prompt: Pinned    # pinned prompt
-
-read_time_unit: min   # see posts' time to read

_data/locales/en.yml

@@ -0,0 +1,83 @@
+# The layout text of site
+
+# ----- Commons label -----
+
+layout:
+  post: Post
+  category: Category
+  tag: Tag
+
+# The tabs of sidebar
+tabs:
+  # format: <filename_without_extension>: <value>
+  home: Home
+  categories: Categories
+  tags: Tags
+  archives: Archives
+  about: About
+
+# the text displayed in the search bar & search results
+search:
+  hint: search
+  cancel: Cancel
+  no_results: Oops! No results found.
+
+panel:
+  lastmod: Recently Updated
+  trending_tags: Trending Tags
+  toc: Contents
+
+copyright:
+  # Shown at the bottom of the post
+  license:
+    template: This post is licensed under :LICENSE_NAME by the author.
+    name: CC BY 4.0
+    link: https://creativecommons.org/licenses/by/4.0/
+
+  # Displayed in the footer
+  brief: Some rights reserved.
+  verbose: >-
+    Except where otherwise noted, the blog posts on this site are licensed
+    under the Creative Commons Attribution 4.0 International (CC BY 4.0) License by the author.
+
+meta: Powered by :PLATFORM with :THEME theme.
+
+not_found:
+  statment: Sorry, we've misplaced that URL or it's pointing to something that doesn't exist.
+
+notification:
+  update_found: A new version of content is available.
+  update: Update
+
+# ----- Posts related labels -----
+
+post:
+  written_by: By
+  posted: Posted
+  updated: Updated
+  words: words
+  pageview_measure: views
+  read_time:
+    unit: min
+    prompt: read
+  relate_posts: Further Reading
+  share: Share
+  button:
+    next: Newer
+    previous: Older
+    copy_code:
+      succeed: Copied!
+    share_link:
+      title: Copy link
+      succeed: Link copied successfully!
+  # pinned prompt of posts list on homepage
+  pin_prompt: Pinned
+
+# categories page
+categories:
+  category_measure:
+    singular: category
+    plural: categories
+  post_measure:
+    singular: post
+    plural: posts

_data/locales/es-ES.yml

@@ -0,0 +1,79 @@
+# The layout text of site
+
+# ----- Commons label -----
+
+layout:
+  post: Entrada
+  category: Categoría
+  tag: Etiqueta
+
+# The tabs of sidebar
+tabs:
+  # format: <filename_without_extension>: <value>
+  home: Inicio
+  categories: Categorías
+  tags: Etiquetas
+  archives: Archivo
+  about: Acerca de
+
+# the text displayed in the search bar & search results
+search:
+  hint: Buscar
+  cancel: Cancelar
+  no_results: ¡Oops! No se encuentran resultados.
+
+panel:
+  lastmod: Actualizado recientemente
+  trending_tags: Etiquetas populares
+  toc: Contenido
+
+copyright:
+  # Shown at the bottom of the post
+  license:
+    template: Esta entrada está licenciada bajo :LICENSE_NAME por el autor.
+    name: CC BY 4.0
+    link: https://creativecommons.org/licenses/by/4.0/
+
+  # Displayed in the footer
+  brief: Algunos derechos reservados.
+  verbose: >-
+    Salvo que se indique explícitamente, las entradas de este blog están licenciadas
+    bajo la Creative Commons Attribution 4.0 International (CC BY 4.0) License por el autor.
+
+meta: Hecho con :PLATFORM usando el tema :THEME.
+
+not_found:
+  statment: Lo sentimos, hemos perdido esa URL o apunta a algo que no existe.
+
+notification:
+  update_found: Hay una nueva versión de contenido disponible.
+  update: Actualizar
+
+# ----- Posts related labels -----
+
+post:
+  written_by: Por
+  posted: Publicado
+  updated: Actualizado
+  words: palabras
+  pageview_measure: visitas
+  read_time:
+    unit: min
+    prompt: ' de lectura'
+  relate_posts: Lecturas adicionales
+  share: Compartir
+  button:
+    next: Nuevo
+    previous: Anterior
+    copy_code:
+      succeed: ¡Copiado!
+    share_link:
+      title: Copiar enlace
+      succeed: ¡Enlace copiado!
+  # pinned prompt of posts list on homepage
+  pin_prompt: Fijado
+
+# categories page
+categories:
+  category_measure: categorias
+  post_measure: entradas

_data/locales/fr-FR.yml

@@ -0,0 +1,79 @@
+# The layout text of site
+
+# ----- Commons label -----
+
+layout:
+  post: Post
+  category: Catégorie
+  tag: Tag
+
+# The tabs of sidebar
+tabs:
+  # format: <filename_without_extension>: <value>
+  home: Accueil
+  categories: Catégories
+  tags: Tags
+  archives: Archives
+  about: A propos de
+
+# the text displayed in the search bar & search results
+search:
+  hint: recherche
+  cancel: Annuler
+  no_results: Oups ! Aucun résultat trouvé.
+
+panel:
+  lastmod: Récemment mis à jour
+  trending_tags: Tags tendance
+  toc: Contenu
+
+copyright:
+  # Shown at the bottom of the post
+  license:
+    template: Cet article est sous licence :LICENSE_NAME par l'auteur.
+    name: CC BY 4.0
+    link: https://creativecommons.org/licenses/by/4.0/
+
+  # Displayed in the footer
+  brief: Certains droits réservés.
+  verbose: >-
+    Sauf mention contraire, les articles de ce site sont publiés sous licence
+    sous la licence Creative Commons Attribution 4.0 International (CC BY 4.0) par l'auteur.
+
+meta: Propulsé par :PLATFORM avec le thème :THEME
+
+not_found:
+  statment: Désolé, nous avons égaré cette URL ou elle pointe vers quelque chose qui n'existe pas.
+
+notification:
+  update_found: Une nouvelle version du contenu est disponible.
+  update: Mise à jour
+
+# ----- Posts related labels -----
+
+post:
+  written_by: Par
+  posted: Posté
+  updated: Mis à jour
+  words: mots
+  pageview_measure: vues
+  read_time:
+    unit: min
+    prompt: lire
+  relate_posts: Autres lectures
+  share: Partager
+  button:
+    next: Plus récent
+    previous: Plus ancien
+    copy_code:
+      succeed: Copié !
+    share_link:
+      title: Copier le lien
+      succeed: Lien copié avec succès !
+  # pinned prompt of posts list on homepage
+  pin_prompt: Épinglé
+
+# categories page
+categories:
+  category_measure: catégories
+  post_measure: posts

_data/locales/id-ID.yml

@@ -0,0 +1,79 @@
+# The layout text of site
+
+# ----- Commons label -----
+
+layout:
+  post: Postingan
+  category: Kategori
+  tag: Tagar
+
+# The tabs of sidebar
+tabs:
+  # format: <filename_without_extension>: <value>
+  home: Beranda
+  categories: Kategori
+  tags: Tagar
+  archives: Arsip
+  about: Tentang
+
+# the text displayed in the search bar & search results
+search:
+  hint: Cari
+  cancel: Batal
+  no_results: Ups! Tidak ada hasil yang ditemukan.
+
+panel:
+  lastmod: Postingan Terbaru
+  trending_tags: Tagar Terpopuler
+  toc: Konten
+
+copyright:
+  # Shown at the bottom of the post
+  license:
+    template: Postingan ini dilisensikan di bawah :LICENSE_NAME oleh penulis.
+    name: CC BY 4.0
+    link: https://creativecommons.org/licenses/by/4.0/
+
+  # Displayed in the footer
+  brief: Sebagian konten dilindungi.
+  verbose: >-
+    Kecuali jika dinyatakan, Postingan blog di situs ini dilisensikan
+    di bawah Lisensi Creative Commons Attribution 4.0 International (CC BY 4.0) oleh penulis.
+
+meta: Didukung oleh :PLATFORM dengan tema :THEME.
+
+not_found:
+  statment: Maaf, kami gagal menemukan URL itu atau memang mengarah ke sesuatu yang tidak ada.
+
+notification:
+  update_found: Versi konten baru tersedia.
+  update: Perbarui
+
+# ----- Posts related labels -----
+
+post:
+  written_by: Oleh
+  posted: Diterbitkan
+  updated: Diperbarui
+  words: kata
+  pageview_measure: dilihat
+  read_time:
+    unit: menit
+    prompt: baca
+  relate_posts: Postingan Lainya
+  share: Bagikan
+  button:
+    next: Terbaru
+    previous: Terlama
+    copy_code:
+      succeed: Disalin!
+    share_link:
+      title: Salin tautan
+      succeed: Tautan berhasil disalin!
+  # pinned prompt of posts list on homepage
+  pin_prompt: Disematkan
+
+# categories page
+categories:
+  category_measure: kategori
+  post_measure: Postingan

_data/locales/ko-KR.yml

@@ -0,0 +1,79 @@
+# The layout text of site
+
+# ----- Commons label -----
+
+layout:
+  post: 포스트
+  category: 카테고리
+  tag: 태그
+
+# The tabs of sidebar
+tabs:
+  # format: <filename_without_extension>: <value>
+  home: 홈
+  categories: 카테고리
+  tags: 태그
+  archives: 아카이브
+  about: 정보
+
+# the text displayed in the search bar & search results
+search:
+  hint: 검색
+  cancel: 취소
+  no_results: 검색 결과가 없습니다.
+
+panel:
+  lastmod: 최근 업데이트
+  trending_tags: 인기 태그
+  toc: 바로가기
+
+copyright:
+  # Shown at the bottom of the post
+  license:
+    template: 이 기사는 저작권자의 :LICENSE_NAME 라이센스를 따릅니다.
+    name: CC BY 4.0
+    link: https://creativecommons.org/licenses/by/4.0/
+
+  # Displayed in the footer
+  brief: 일부 권리 보유
+  verbose: >-
+    명시되지 않는 한 이 사이트의 블로그 게시물은 작성자의
+    Creative Commons Attribution 4.0 International(CC BY 4.0) 라이선스에 따라 사용이 허가되었습니다.
+
+meta: Powered by :PLATFORM with :THEME theme.
+
+not_found:
+  statment: 해당 URL은 존재하지 않습니다.
+
+notification:
+  update_found: 새 버전의 콘텐츠를 사용할 수 있습니다.
+  update: 업데이트
+
+# ----- Posts related labels -----
+
+post:
+  written_by: By
+  posted: 게시
+  updated: 업데이트
+  words: 단어
+  pageview_measure: 조회
+  read_time:
+    unit: 분
+    prompt: 읽는 시간
+  relate_posts: 관련된 글
+  share: 공유하기
+  button:
+    next: 다음 글
+    previous: 이전 글
+    copy_code:
+      succeed: 복사되었습니다!
+    share_link:
+      title: 링크 복사하기
+      succeed: 링크가 복사되었습니다!
+  # pinned prompt of posts list on homepage
+  pin_prompt: 핀
+
+# categories page
+categories:
+  category_measure: 카테고리
+  post_measure: 포스트

_data/locales/my-MM.yml

@@ -0,0 +1,79 @@
+# The layout text of site
+
+# ----- Commons label -----
+
+layout:
+  post: ပို့စ်
+  category: ကဏ္ဍ
+  tag: နာမ(တက်ဂ်)
+
+# The tabs of sidebar
+tabs:
+  # format: <filename_without_extension>: <value>
+  home: အဓိကစာမျက်နှာ
+  categories: ကဏ္ဍများ
+  tags: နာမ(တက်ဂ်)များ
+  archives: မှတ်တမ်း​တိုက်
+  about: အကြောင်းအရာ
+
+# the text displayed in the search bar & search results
+search:
+  hint: ရှာဖွေမည်
+  cancel: ဖျက်သိမ်းမည်
+  no_results: အိုး! ဘာမှမရှိပါ
+
+panel:
+  lastmod: မကြာသေးမီကမွမ်းမံထားသည်
+  trending_tags: ခေတ်စားနေသည့်တက်ဂ်များ
+  toc: အကြောင်းအရာများ
+
+copyright:
+  # Shown at the bottom of the post
+  license:
+    template: ဤပို့စ်သည်စာရေးသူ၏ :LICENSE_NAME လိုင်စင်ရထားသည်။
+    name: CC BY 4.0
+    link: https://creativecommons.org/licenses/by/4.0/
+
+  # Displayed in the footer
+  brief: မူပိုင်ခွင့်အချို့ကို လက်ဝယ်ထားသည်။
+  verbose: >-
+    အခြားမှတ်သားထားချက်များမှလွဲ၍ ဤဆိုက်ရှိ ဘလော့ဂ်ပို့စ်များသည် စာရေးသူ၏
+    Creative Commons Attribution 4.0 International (CC BY 4.0) အောက်တွင် လိုင်စင်ရထားပါသည်။
+
+meta: Powered by :PLATFORM with :THEME theme.
+
+not_found:
+  statment: ဝမ်းနည်းပါသည်၊ ကျွန်ုပ်တို့သည် အဆိုပါ URL ကို မှားယွင်းစွာ နေရာချထားခြင်း သို့မဟုတ် ၎င်းသည် မရှိသောအရာကို ညွှန်ပြနေပါသည်။
+
+notification:
+  update_found: အကြောင်းအရာဗားရှင်းအသစ်ကို ရနိုင်ပါပြီ။
+  update: အပ်ဒိတ်
+
+# ----- Posts related labels -----
+
+post:
+  written_by: ကရေးသားခဲ့သည်။
+  posted: တင်ထားခဲ့သည်။
+  updated: မွမ်းမံထားခဲ့သည်။
+  words: စကားလုံးများ
+  pageview_measure: အမြင်များ
+  read_time:
+    unit: မိနစ်
+    prompt: ဖတ်ပါမည်
+  relate_posts: နောက်ထပ်ဖတ်ရန်
+  share: မျှဝေရန်
+  button:
+    next: အသစ်များ
+    previous: အဟောင်းများ
+    copy_code:
+      succeed: ကူးယူလိုက်ပြီ။
+    share_link:
+      title: လင့်ခ်ကို ကူးယူရန်
+      succeed: လင့်ခ်ကို ကူးယူလိုက်ပြီ။
+  # pinned prompt of posts list on homepage
+  pin_prompt: ချိတ်ထားသည်။
+
+# categories page
+categories:
+  category_measure: ကဏ္ဍများ
+  post_measure: ပို့စ်များ

_data/locales/pt-BR.yml

@@ -0,0 +1,79 @@
+# The layout text of site
+
+# ----- Commons label -----
+
+layout:
+  post: Post
+  category: Categoria
+  tag: Tag
+
+# The tabs of sidebar
+tabs:
+  # format: <filename_without_extension>: <value>
+  home: Home
+  categories: Categorias
+  tags: Tags
+  archives: Arquivos
+  about: Sobre
+
+# the text displayed in the search bar & search results
+search:
+  hint: Buscar
+  cancel: Cancelar
+  no_results: Oops! Nenhum resultado encontrado.
+
+panel:
+  lastmod: Atualizados recentemente
+  trending_tags: Trending Tags
+  toc: Conteúdo
+
+copyright:
+  # Shown at the bottom of the post
+  license:
+    template: Esta postagem está licenciada sob :LICENSE_NAME pelo autor.
+    name: CC BY 4.0
+    link: https://creativecommons.org/licenses/by/4.0/
+
+  # Displayed in the footer
+  brief: Alguns direitos reservados.
+  verbose: >-
+    Exceto onde indicado de outra forma, as postagens do blog neste site são licenciadas sob a 
+    Creative Commons Attribution 4.0 International (CC BY 4.0) License pelo autor.
+
+meta: Feito com :PLATFORM usando o tema :THEME.
+
+not_found:
+  statment: Desculpe, a página não foi encontrada.
+
+notification:
+  update_found: Uma nova versão do conteúdo está disponível.
+  update: atualização
+
+# ----- Posts related labels -----
+
+post:
+  written_by: Por
+  posted: Postado em
+  updated: Atualizado
+  words: palavras
+  pageview_measure: visualizações
+  read_time:
+    unit: min
+    prompt: " de leitura"
+  relate_posts: Leia também
+  share: Compartilhar
+  button:
+    next: Próximo
+    previous: Anterior
+    copy_code:
+      succeed: Copiado!
+    share_link:
+      title: Copie o link
+      succeed: Link copiado com sucesso!
+  # pinned prompt of posts list on homepage
+  pin_prompt: Fixado
+
+# categories page
+categories:
+  category_measure: categorias
+  post_measure: posts

_data/locales/ru-RU.yml

@@ -0,0 +1,79 @@
+# The layout text of site
+
+# ----- Commons label -----
+
+layout:
+  post: Публикация
+  category: Категория
+  tag: Тег
+
+# The tabs of sidebar
+tabs:
+  # format: <filename_without_extension>: <value>
+  home: Домашняя страница
+  categories: Категории
+  tags: Теги
+  archives: Архив
+  about: О сайте
+
+# the text displayed in the search bar & search results
+search:
+  hint: поиск
+  cancel: Отменить
+  no_results: Ох! Ничего не найдено.
+
+panel:
+  lastmod: Недавно обновлено
+  trending_tags: Популярные теги
+  toc: Содержание
+
+copyright:
+  # Shown at the bottom of the post
+  license:
+    template: Публикация защищена лицензией :LICENSE_NAME.
+    name: CC BY 4.0
+    link: https://creativecommons.org/licenses/by/4.0/
+
+  # Displayed in the footer
+  brief: Некоторые права защищены.
+  verbose: >-
+    Публикации на сайте защищены лицензией Creative Commons Attribution 4.0 International (CC BY 4.0),
+    если в тексте публикации не указано иное.
+
+meta: Powered by :PLATFORM with :THEME theme.
+
+not_found:
+  statment: Извините, эта ссылка указывает на ресурс который не существует.
+
+notification:
+  update_found: Доступна новая версия контента.
+  update: Обновлять
+
+# ----- Posts related labels -----
+
+post:
+  written_by: Автор
+  posted: Время публикации
+  updated: Обновлено
+  words: слов
+  pageview_measure: просмотров
+  read_time:
+    unit: минут
+    prompt: чтения
+  relate_posts: Вам также может быть интересно
+  share: Поделиться
+  button:
+    next: Предыдущая публикация
+    previous: Следующая публикация
+    copy_code:
+      succeed: Скопировано успешно!
+    share_link:
+      title: Скопировать ссылку
+      succeed: Ссылка успешно скопирована!
+  # pinned prompt of posts list on homepage
+  pin_prompt: Закреплено
+
+# categories page
+categories:
+  category_measure: категории
+  post_measure: публикации

_data/locales/uk-UA.yml

@@ -0,0 +1,79 @@
+# The layout text of site
+
+# ----- Commons label -----
+
+layout:
+  post: Публікація
+  category: Категорія
+  tag: Тег
+
+# The tabs of sidebar
+tabs:
+  # format: <filename_without_extension>: <value>
+  home: Домашня сторінка
+  categories: Категорії
+  tags: Теги
+  archives: Архів
+  about: Про сайт
+
+# the text displayed in the search bar & search results
+search:
+  hint: пошук
+  cancel: Скасувати
+  no_results: Ох! Нічого не знайдено.
+
+panel:
+  lastmod: Нещодавно оновлено
+  trending_tags: Популярні теги
+  toc: Зміст
+
+copyright:
+  # Shown at the bottom of the post
+  license:
+    template: Публікація захищена ліцензією :LICENSE_NAME.
+    name: CC BY 4.0
+    link: https://creativecommons.org/licenses/by/4.0/
+
+  # Displayed in the footer
+  brief: Деякі права захищено.
+  verbose: >-
+    Публікації на сайті захищено ліцензією Creative Commons Attribution 4.0 International (CC BY 4.0),
+    якщо інше не вказано в тексті.
+
+meta: Powered by :PLATFORM with :THEME theme.
+
+not_found:
+  statment: Вибачте, це посилання вказує на ресурс, що не існує.
+
+notification:
+  update_found: Доступна нова версія вмісту.
+  update: Оновлення
+
+# ----- Posts related labels -----
+
+post:
+  written_by: Автор
+  posted: Час публікації
+  updated: Оновлено
+  words: слів
+  pageview_measure: переглядів
+  read_time:
+    unit: хвилин
+    prompt: читання
+  relate_posts: Вас також може зацікавити
+  share: Поділитися
+  button:
+    next: Попередня публікація
+    previous: Наступна публікація
+    copy_code:
+      succeed: Успішно скопійовано!
+    share_link:
+      title: Скопіювати посилання
+      succeed: Посилання успішно скопійовано!
+  # pinned prompt of posts list on homepage
+  pin_prompt: Закріплено
+
+# categories page
+categories:
+  category_measure: категорії
+  post_measure: публікації

_data/locales/vi-VN.yml

@@ -0,0 +1,77 @@
+# The layout text of site
+
+# ----- Commons label -----
+
+layout:
+  post: Bài viết
+  category: Danh mục
+  tag: Thẻ
+
+# The tabs of sidebar
+tabs:
+  # format: <filename_without_extension>: <value>
+  home: Trang chủ
+  categories: Các danh mục
+  tags: Các thẻ
+  archives: Lưu trữ
+  about: Giới thiệu
+
+# the text displayed in the search bar & search results
+search:
+  hint: tìm kiếm
+  cancel: Hủy
+  no_results: Không có kết quả tìm kiếm.
+
+panel:
+  lastmod: Mới cập nhật
+  trending_tags: Các thẻ thịnh hành
+  toc: Mục lục
+
+copyright:
+  # Shown at the bottom of the post
+  license:
+    template: Bài viết này được cấp phép bởi tác giả theo giấy phép :LICENSE_NAME.
+    name: CC BY 4.0
+    link: https://creativecommons.org/licenses/by/4.0/
+
+  # Displayed in the footer
+  brief: Một số quyền được bảo lưu.
+  verbose: >-
+    Trừ khi có ghi chú khác, các bài viết đăng trên trang này được cấp phép bởi tác giả theo giấy phép Creative Commons Attribution 4.0 International (CC BY 4.0).
+meta: Trang web này được tạo bởi :PLATFORM với chủ đề :THEME.
+
+not_found:
+  statment: Xin lỗi, chúng tôi đã đặt nhầm URL hoặc đường dẫn trỏ đến một trang nào đó không tồn tại.
+
+notification:
+  update_found: Đã có phiên bản mới của nội dung.
+  update: Cập nhật
+
+# ----- Posts related labels -----
+
+post:
+  written_by: Viết bởi
+  posted: Đăng lúc
+  updated: Cập nhật lúc
+  words: từ
+  pageview_measure: lượt xem
+  read_time:
+    unit: phút
+    prompt: đọc
+  relate_posts: Bài viết liên quan
+  share: Chia sẻ
+  button:
+    next: Mới hơn
+    previous: Cũ hơn
+    copy_code:
+      succeed: Đã sao chép!
+    share_link:
+      title: Sao chép đường dẫn
+      succeed: Đã sao chép đường dẫn thành công!
+  # pinned prompt of posts list on homepage
+  pin_prompt: Bài ghim
+
+# categories page
+categories:
+  category_measure: danh mục
+  post_measure: bài viết

_data/locales/zh-CN.yml

@@ -0,0 +1,78 @@
+# The layout text of site
+
+# ----- Commons label -----
+
+layout:
+  post: 文章
+  category: 分类
+  tag: 标签
+
+# The tabs of sidebar
+tabs:
+  # format: <filename_without_extension>: <value>
+  home: 首页
+  categories: 分类
+  tags: 标签
+  archives: 归档
+  about: 关于
+
+# the text displayed in the search bar & search results
+search:
+  hint: 搜索
+  cancel: 取消
+  no_results: 搜索结果为空
+
+panel:
+  lastmod: 最近更新
+  trending_tags: 热门标签
+  toc: 文章内容
+
+copyright:
+  # Shown at the bottom of the post
+  license:
+    template: 本文由作者按照 :LICENSE_NAME 进行授权
+    name: CC BY 4.0
+    link: https://creativecommons.org/licenses/by/4.0/
+
+  # Displayed in the footer
+  brief: 保留部分权利。
+  verbose: >-
+    除非另有说明，本网站上的博客文章均由作者按照知识共享署名 4.0 国际 (CC BY 4.0) 许可协议进行授权。
+
+meta: 本站由 :PLATFORM 生成，采用 :THEME 主题。
+
+not_found:
+  statment: 抱歉，我们放错了该 URL，或者它指向了不存在的内容。
+
+notification:
+  update_found: 发现新版本的内容。
+  update: 更新
+
+# ----- Posts related labels -----
+
+post:
+  written_by: 作者
+  posted: 发表于
+  updated: 更新于
+  words: 字
+  pageview_measure: 次浏览
+  read_time:
+    unit: 分钟
+    prompt: 阅读
+  relate_posts: 相关文章
+  share: 分享
+  button:
+    next: 下一篇
+    previous: 上一篇
+    copy_code:
+      succeed: 已复制！
+    share_link:
+      title:  分享链接
+      succeed: 链接已复制！
+  # pinned prompt of posts list on homepage
+  pin_prompt: 顶置
+
+# categories page
+categories:
+  category_measure: 个分类
+  post_measure: 篇文章

_data/rights.yml

@@ -1,11 +0,0 @@
-#  License data
-
-license:
-  name: CC BY 4.0
-  link: "https://creativecommons.org/licenses/by/4.0/"
-
-brief: Some rights reserved.
-
-verbose: >-
-  Except where otherwise noted, the blog posts on this site are licensed
-  under the Creative Commons Attribution 4.0 International (CC BY 4.0) License by the author.

_data/share.yml

@@ -13,7 +13,7 @@ platforms:
   -
     type: Telegram
     icon: "fab fa-telegram"
-    link: "https://telegram.me/share?text=TITLE&url=URL"
+    link: "https://t.me/share/url?url=URL&text=TITLE"
 
   # Uncomment below if you need to.
   # -

_includes/assets-origin.html

@@ -0,0 +1,12 @@
+{% comment %} Site static assets origin {% endcomment %}
+{% assign origin = 'cross_origin' %}
+
+{% if site.assets.self_host.enabled %}
+  {% if site.assets.self_host.env %}
+    {% if site.assets.self_host.env == jekyll.environment %}
+      {% assign origin = 'self_host' %}
+    {% endif %}
+  {% else %}
+    {% assign origin = 'self_host' %}
+  {% endif %}
+{% endif %}

_includes/comments.html

@@ -0,0 +1,5 @@
+<!--  The comments switcher -->
+{% if page.comments and site.comments.active %}
+  {% capture path %}comments/{{ site.comments.active }}.html{% endcapture %}
+  {% include {{ path }} %}
+{% endif %}

_includes/comments/disqus.html

@@ -0,0 +1,54 @@
+<!--
+  The Disqus lazy loading.
+-->
+<div id="disqus_thread" class="pt-2 pb-2">
+  <p class="text-center text-muted small">
+    Comments powered by <a href="https://disqus.com/">Disqus</a>.
+  </p>
+</div>
+
+<script type="text/javascript">
+
+  var disqus_config = function () {
+    this.page.url = '{{ page.url | absolute_url }}';
+    this.page.identifier = '{{ page.url }}';
+  };
+
+  /* Lazy loading */
+
+  var disqus_observer = new IntersectionObserver(function (entries) {
+    if(entries[0].isIntersecting) {
+        (function () {
+            var d = document, s = d.createElement('script');
+            s.src = 'https://{{ site.comments.disqus.shortname }}.disqus.com/embed.js';
+            s.setAttribute('data-timestamp', +new Date());
+            (d.head || d.body).appendChild(s);
+        })();
+
+        disqus_observer.disconnect();
+    }
+  }, { threshold: [0] });
+
+  disqus_observer.observe(document.querySelector('#disqus_thread'));
+
+  /* Auto switch theme */
+
+  function reloadDisqus() {
+    /* Disqus hasn't been loaded */
+    if (typeof DISQUS === "undefined") {
+      return;
+    }
+
+    if (document.readyState == 'complete') {
+      DISQUS.reset({ reload: true, config: disqus_config });
+    }
+  }
+
+  const modeToggle = document.querySelector(".mode-toggle");
+
+  if (typeof modeToggle !== "undefined") {
+    /*  modeToggle.addEventListener('click', reloadDisqus); // not pretty for 'color-scheme'  */
+    window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', reloadDisqus);
+  }
+
+</script>

_includes/comments/giscus.html

@@ -0,0 +1,56 @@
+<!-- https://giscus.app/ -->
+<script type="text/javascript">
+  $(function () {
+    const origin = "https://giscus.app";
+    const iframe = "iframe.giscus-frame";
+    const lightTheme = "light";
+    const darkTheme = "dark_dimmed";
+    let initTheme = lightTheme;
+
+    if ($("html[data-mode=dark]").length > 0
+        || ($("html[data-mode]").length == 0
+            && window.matchMedia("(prefers-color-scheme: dark)").matches)) {
+      initTheme = darkTheme;
+    }
+
+    let giscusAttributes = {
+      "src": "https://giscus.app/client.js",
+      "data-repo": "{{ site.comments.giscus.repo}}",
+      "data-repo-id": "{{ site.comments.giscus.repo_id }}",
+      "data-category": "{{ site.comments.giscus.category }}",
+      "data-category-id": "{{ site.comments.giscus.category_id }}",
+      "data-mapping": "{{ site.comments.giscus.mapping | default: 'pathname' }}",
+      "data-reactions-enabled": "1",
+      "data-emit-metadata": "0",
+      "data-theme": initTheme,
+      "data-input-position": "{{ site.comments.giscus.input_position | default: 'bottom' }}",
+      "data-lang": "{{ site.comments.giscus.lang | default: lang }}",
+      "crossorigin": "anonymous",
+      "async": ""
+    };
+
+    let giscusScript = document.createElement("script");
+    Object.entries(giscusAttributes).forEach(([key, value]) => giscusScript.setAttribute(key, value));
+    document.getElementById("tail-wrapper").appendChild(giscusScript);
+
+    addEventListener("message", (event) => {
+      if (event.source === window && event.data &&
+            event.data.direction === ModeToggle.ID) {
+        /* global theme mode changed */
+        const mode = event.data.message;
+        const theme = (mode === ModeToggle.DARK_MODE ? darkTheme : lightTheme);
+
+        const message = {
+          setConfig: {
+            theme: theme
+          }
+        };
+
+        const giscus = document.querySelector(iframe).contentWindow;
+        giscus.postMessage({ giscus: message }, origin);
+      }
+
+    });
+
+  });
+</script>

_includes/comments/utterances.html

@@ -0,0 +1,51 @@
+<!-- https://utteranc.es/ -->
+<script src="https://utteranc.es/client.js"
+        repo="{{ site.comments.utterances.repo }}"
+        issue-term="{{ site.comments.utterances.issue_term }}"
+        crossorigin="anonymous"
+        async>
+</script>
+
+<script type="text/javascript">
+  $(function() {
+    const origin = "https://utteranc.es";
+    const iframe = "iframe.utterances-frame";
+    const lightTheme = "github-light";
+    const darkTheme = "github-dark";
+    let initTheme = lightTheme;
+
+    if ($("html[data-mode=dark]").length > 0
+        || ($("html[data-mode]").length == 0
+            && window.matchMedia("(prefers-color-scheme: dark)").matches)) {
+      initTheme = darkTheme;
+    }
+
+    addEventListener("message", (event) => {
+      let theme;
+
+      /* credit to <https://github.com/utterance/utterances/issues/170#issuecomment-594036347> */
+      if (event.origin === origin) {
+        /* page initial */
+        theme = initTheme;
+
+      } else if (event.source === window && event.data &&
+            event.data.direction === ModeToggle.ID) {
+        /* global theme mode changed */
+        const mode = event.data.message;
+        theme = (mode === ModeToggle.DARK_MODE ? darkTheme : lightTheme);
+
+      } else {
+        return;
+      }
+
+      const message = {
+        type: "set-theme",
+        theme: theme
+      };
+
+      const utterances = document.querySelector(iframe).contentWindow;
+      utterances.postMessage(message, origin);
+    });
+
+  });
+</script>

_includes/css-selector.html

@@ -1,15 +0,0 @@
-<!--
-  CSS selector for site.
--->
-
-<link rel="stylesheet" href="{{ '/assets/css/style.css' | relative_url }}">
-
-{% if site.toc and page.toc %}
-  <link rel="stylesheet"
-    href="https://cdn.jsdelivr.net/gh/afeld/bootstrap-toc@1.0.1/dist/bootstrap-toc.min.css">
-{% endif %}
-
-{% if page.layout == 'page' or page.layout == 'post' %}
-  <!-- Manific Popup -->
-  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/magnific-popup@1.1.0/dist/magnific-popup.min.css">
-{% endif %}

_includes/datetime.html

@@ -0,0 +1,21 @@
+<!--
+  Date format snippet
+  See: ${JS_ROOT}/utils/locale-dateime.js
+-->
+
+{% assign wrap_elem = include.wrap | default: 'em' %}
+
+{% if site.prefer_datetime_locale == 'en' or lang == 'en' %}
+  {% assign df_strftime = '%b %e, %Y' %}
+  {% assign df_dayjs = 'll' %}
+{% else %}
+  {% assign df_strftime = '%F' %}
+  {% assign df_dayjs = 'YYYY-MM-DD' %}
+{% endif %}
+
+<{{ wrap_elem }} class="{% if include.class %}{{ include.class }}{% endif %}"
+    data-ts="{{ include.date | date: '%s' }}"
+    data-df="{{ df_dayjs }}"
+    {% if include.tooltip %}data-toggle="tooltip" data-placement="bottom"{% endif %}>
+  {{ include.date | date: df_strftime }}
+</{{ wrap_elem }}>

_includes/disqus.html

@@ -1,25 +0,0 @@
-<!--
-  The Disqus lazy loading.
-  Powered by: <https://github.com/osvaldasvalutis/disqusLoader.js>
--->
-
-<div id="disqus" class="pt-2 pb-2">
-  <p class="text-center text-muted small pb-5">
-    Comments powered by <a href="https://disqus.com/">Disqus</a>.
-  </p>
-</div>
-
-<script src="{{ '/assets/js/lib/jquery.disqusloader.min.js' | relative_url }}"></script>
-<script>
-  const options = {
-    scriptUrl: '//{{ site.disqus.shortname }}.disqus.com/embed.js',
-
-    disqusConfig: function() {
-      this.page.title = '{{ page.title }}';
-      this.page.url = '{{ page.url | absolute_url }}';
-      this.page.identifier = '{{ page.url }}';
-    }
-  };
-
-  $.disqusLoader('#disqus', options);
-</script>

_includes/footer.html

@@ -1,30 +1,36 @@
-<!--
-  The Footer
--->
+<!-- The Footer -->
 
-<footer class="d-flex w-100 justify-content-center">
-  <div class="d-flex justify-content-between align-items-center">
+<footer class="row pl-3 pr-3">
+  <div class="col-12 d-flex justify-content-between align-items-center text-muted pl-0 pr-0">
     <div class="footer-left">
       <p class="mb-0">
         © {{ 'now' | date: "%Y" }}
         <a href="{{ site.social.links[0] }}">{{ site.social.name }}</a>.
-        {% if site.data.rights.brief %}
+        {% if site.data.locales[lang].copyright.brief %}
         <span data-toggle="tooltip" data-placement="top"
-          title="{{ site.data.rights.verbose }}">{{ site.data.rights.brief }}</span>
+          title="{{ site.data.locales[lang].copyright.verbose }}">{{ site.data.locales[lang].copyright.brief }}</span>
         {% endif %}
       </p>
     </div>
 
     <div class="footer-right">
       <p class="mb-0">
-        Powered by
-        <a href="https://jekyllrb.com" target="_blank" rel="noopener">Jekyll</a>
-        with
-        <a href="https://github.com/cotes2020/jekyll-theme-chirpy"
-          target="_blank" rel="noopener">Chirpy</a>
-        theme.
+        {% capture _platform %}
+          <a href="https://jekyllrb.com" target="_blank" rel="noopener">Jekyll</a>
+        {% endcapture %}
+
+        {% capture _theme %}
+          <a href="https://github.com/cotes2020/jekyll-theme-chirpy" target="_blank" rel="noopener">Chirpy</a>
+        {% endcapture %}
+
+        {{ site.data.locales[lang].meta
+          | default: 'Powered by :PLATFORM with :THEME theme.'
+          | replace: ':PLATFORM', _platform | replace: ':THEME', _theme
+        }}
+
       </p>
     </div>
 
-  </div> <!-- div.d-flex -->
+  </div>
+
 </footer>

_includes/head.html

@@ -6,6 +6,11 @@
   <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
 
+  <!-- Allow having a localized datetime different from the appearance language -->
+  {% if site.prefer_datetime_locale %}
+    <meta name="prefer-datetime-locale" content="{{ site.prefer_datetime_locale }}">
+  {% endif %}
+
   {% if page.layout == 'home' or page.layout == 'post' %}
 
     {% if site.google_analytics.pv.proxy_endpoint %}
@@ -18,7 +23,30 @@
 
   {% endif %}
 
-  {% seo title=false %}
+  {% capture seo_tags %}
+    {% seo title=false %}
+  {% endcapture %}
+
+  {% if site.img_cdn and seo_tags contains 'og:image' %}
+    {% assign properties = 'og:image,twitter:image' | split: ',' %}
+
+    {% for prop in properties %}
+      {% if site.img_cdn contains '//' %}
+        <!-- `site.img_cdn` is a cross-origin URL -->
+        {% capture target %}<meta property="{{ prop }}" content="{{ site.url }}{% endcapture %}
+        {% capture replacement %}<meta property="{{ prop }}" content="{{ site.img_cdn }}{% endcapture %}
+      {% else %}
+        <!-- `site.img_cdn` is a local file path -->
+        {% capture target %}<meta property="{{ prop }}" content="{{ site.url }}{{ site.baseurl }}{% endcapture %}
+        {% assign replacement = target | append: site.img_cdn %}
+      {% endif %}
+
+      {% assign seo_tags = seo_tags | replace: target, replacement %}
+
+    {% endfor %}
+  {% endif %}
+
+  {{ seo_tags }}
 
   <title>
   {%- unless page.layout == "home" -%}
@@ -29,12 +57,24 @@
 
   {% include favicons.html %}
 
-  <!-- Google Fonts -->
-  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin="anonymous">
-  <link rel="dns-prefetch" href="https://fonts.gstatic.com">
+  {% if site.resources.ignore_env != jekyll.environment and site.resources.self_hosted %}
+
+    <link href="{{ site.data.assets[origin].webfonts | relative_url }}" rel="stylesheet">
+
+  {% else %}
+
+    {% for cdn in site.data.assets[origin].cdns %}
+      <link rel="preconnect" href="{{ cdn.url }}" {{ cdn.args }}>
+      <link rel="dns-prefetch" href="{{ cdn.url }}" {{ cdn.args }}>
+    {% endfor %}
+
+    <link rel="stylesheet" href="{{ site.data.assets[origin].webfonts | relative_url }}">
+
+  {% endif %}
 
   <!-- GA -->
-  {% if jekyll.environment == 'production' %}
+  {% if jekyll.environment == 'production'
+      and site.google_analytics.id != empty and site.google_analytics.id %}
     <link rel="preconnect" href="https://www.google-analytics.com" crossorigin="use-credentials">
     <link rel="dns-prefetch" href="https://www.google-analytics.com">
 
@@ -43,32 +83,34 @@
 
     {% if site.google_analytics.pv.proxy_endpoint %}
       {% assign proxy_url = site.google_analytics.pv.proxy_endpoint
-        | replace: "https://", "" | split: "/" | first | prepend: "https://" %}
-
+          | replace: "https://", "" | split: "/" | first | prepend: "https://" %}
       <link rel="preconnect" href="{{ proxy_url }}" crossorigin="use-credentials">
       <link rel="dns-prefetch" href="{{ proxy_url }}">
     {% endif %}
   {% endif %}
 
-  <!-- jsDelivr CDN -->
-  <link rel="preconnect" href="https://cdn.jsdelivr.net">
-  <link rel="dns-prefetch" href="https://cdn.jsdelivr.net">
-
   <!-- Bootstrap -->
-  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.0.0/dist/css/bootstrap.min.css">
+  <link rel="stylesheet" href="{{ site.data.assets[origin].bootstrap.css | relative_url}}">
 
   <!-- Font Awesome -->
-  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@fortawesome/fontawesome-free@5.11.2/css/all.min.css">
+  <link rel="stylesheet" href="{{ site.data.assets[origin].fontawesome.css | relative_url }}">
 
-  {% include css-selector.html %}
+  <link rel="stylesheet" href="{{ '/assets/css/style.css' | relative_url }}">
 
-  <!-- JavaScripts -->
+  {% if site.toc and page.toc %}
+    <link rel="stylesheet" href="{{ site.data.assets[origin].bootstrap-toc.css | relative_url }}">
+  {% endif %}
 
-  <script src="https://cdn.jsdelivr.net/npm/jquery@3/dist/jquery.min.js"></script>
+  {% if page.layout == 'page' or page.layout == 'post' %}
+    <!-- Manific Popup -->
+    <link rel="stylesheet" href="{{ site.data.assets[origin].magnific-popup.css | relative_url }}">
+  {% endif %}
 
-  <script defer
-    src="https://cdn.jsdelivr.net/combine/npm/popper.js@1.15.0,npm/bootstrap@4/dist/js/bootstrap.min.js"></script>
+  <!-- JavaScript -->
 
-  {% include js-selector.html %}
+  <script src="{{ site.data.assets[origin].jquery.js | relative_url }}"></script>
 
+  {% unless site.theme_mode %}
+    {% include mode-toggle.html %}
+  {% endunless %}
 </head>

_includes/js-selector.html

@@ -2,18 +2,48 @@
   JS selector for site.
 -->
 
-{% if page.layout == 'home' or page.layout == 'post' %}
+<!-- layout specified -->
+
+{% if page.layout == 'post' %}
   {% if site.google_analytics.pv.proxy_endpoint or site.google_analytics.pv.cache_path %}
     <!-- pv-report needs countup.js -->
-    <script async src="https://cdn.jsdelivr.net/npm/countup.js@1.9.3/dist/countUp.min.js"></script>
-    <script async src="{{ '/assets/js/dist/pvreport.min.js' | relative_url }}"></script>
+    <script async src="{{ site.data.assets[origin].countup.js | relative_url }}"></script>
+    <script defer src="{{ '/assets/js/dist/pvreport.min.js' | relative_url }}"></script>
   {% endif %}
 {% endif %}
 
 {% if page.layout == 'post' or page.layout == 'page' %}
-  <!-- image lazy-loading & popup -->
-  <script async
-    src="https://cdn.jsdelivr.net/combine/npm/lozad/dist/lozad.min.js,npm/magnific-popup@1/dist/jquery.magnific-popup.min.js"></script>
+  <!-- image lazy-loading & popup & clipboard -->
+  {% assign _urls = site.data.assets[origin].magnific-popup.js
+      | append: ',' | append: site.data.assets[origin].lozad.js
+      | append: ',' | append: site.data.assets[origin].clipboard.js
+  %}
+
+  {% include jsdelivr-combine.html urls=_urls %}
+
+{% endif %}
+
+{% if page.layout == 'home'
+    or page.layout == 'post'
+    or page.layout == 'archives'
+    or page.layout == 'category'
+    or page.layout == 'tag' %}
+
+  {% if site.prefer_datetime_locale %}
+    {% assign locale = site.prefer_datetime_locale | downcase %}
+  {% else %}
+    {% assign locale = site.lang | split: '-' | first %}
+  {% endif %}
+
+  {% assign _urls = site.data.assets[origin].dayjs.js.common
+      | append: ',' | append: site.data.assets[origin].dayjs.js.locale
+      | replace: ':LOCALE', locale
+      | append: ',' | append: site.data.assets[origin].dayjs.js.relativeTime
+      | append: ',' | append: site.data.assets[origin].dayjs.js.localizedFormat
+  %}
+
+  {% include jsdelivr-combine.html urls=_urls %}
+
 {% endif %}
 
 {% if page.layout == 'home'
@@ -21,12 +51,16 @@
     or page.layout == 'post'
     or page.layout == 'page' %}
   {% assign type = page.layout %}
+{% elsif page.layout == 'archives'
+    or page.layout == 'category'
+    or page.layout == 'tag' %}
+  {% assign type = "misc" %}
 {% else %}
   {% assign type = "commons" %}
 {% endif %}
 
-{% assign js = type | prepend: '/assets/js/dist/' | append: '.min.js' %}
-<script defer src="{{ js | relative_url }}"></script>
+{% capture script %}/assets/js/dist/{{ type }}.min.js{% endcapture %}
+<script defer src="{{ script | relative_url }}"></script>
 
 {% if page.math %}
   <!-- MathJax -->
@@ -45,18 +79,25 @@
     }
   };
   </script>
-  <script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
-  <script type="text/javascript" id="MathJax-script" async
-    src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-chtml.js">
+  <script src="{{ site.data.assets[origin].polyfill.js | relative_url }}"></script>
+  <script id="MathJax-script" async src="{{ site.data.assets[origin].mathjax.js | relative_url }}">
   </script>
 {% endif %}
 
+<!-- commons -->
+
+<script src="{{ site.data.assets[origin].bootstrap.js | relative_url }}"></script>
+
 {% if jekyll.environment == 'production' %}
   <!-- PWA -->
-  <script defer src="{{ '/app.js' | relative_url }}"></script>
+  {% if site.pwa.enabled %}
+    <script defer src="{{ '/app.js' | relative_url }}"></script>
+  {% else %}
+    <script defer src="{{ '/unregister.js' | relative_url }}"></script>
+  {% endif %}
 
   <!-- GA -->
-  {% if site.google_analytics.id %}
+  {% if site.google_analytics.id != empty and site.google_analytics.id %}
     {% include google-analytics.html %}
   {% endif %}
 

_includes/jsdelivr-combine.html

@@ -0,0 +1,32 @@
+{% assign urls = include.urls | split: ',' %}
+
+{% assign combined_urls = nil %}
+
+{% assign domain = 'https://cdn.jsdelivr.net/' %}
+
+{% for url in urls %}
+
+  {% if url contains domain %}
+    {% assign url_snippet = url | slice: domain.size, url.size %}
+
+    {% if combined_urls %}
+      {% assign combined_urls = combined_urls | append: ',' | append: url_snippet %}
+    {% else %}
+      {% assign combined_urls = domain | append: 'combine/' | append: url_snippet %}
+    {% endif %}
+
+  {% elsif url contains '//' %}
+
+    <script src="{{ url }}"></script>
+
+  {% else %}
+
+    <script src="{{ url | relative_url }}"></script>
+
+  {% endif %}
+
+{% endfor %}
+
+{% if combined_urls %}
+  <script src="{{ combined_urls }}"></script>
+{% endif %}

_includes/lang.html

@@ -0,0 +1,8 @@
+{% comment %}
+Detect appearance language and return it through variable "lang"
+{% endcomment %}
+{% if site.data.locales[site.lang] %}
+  {% assign lang = site.lang %}
+{% else %}
+  {% assign lang = 'en' %}
+{% endif %}

_includes/language-alias.html

@@ -0,0 +1,70 @@
+{% comment %}
+
+  Convert the alias of the syntax language to the official name
+
+  See: <https://github.com/rouge-ruby/rouge/wiki/List-of-supported-languages-and-lexers>
+
+{% endcomment %}
+
+{% assign _lang = include.language | default: '' %}
+
+{% case _lang %}
+  {% when 'actionscript', 'as', 'as3' %}
+    {{ 'ActionScript' }}
+  {% when 'applescript' %}
+    {{ 'AppleScript' }}
+  {% when 'brightscript', 'bs', 'brs' %}
+    {{ 'BrightScript' }}
+  {% when 'cfscript', 'cfc' %}
+    {{ 'CFScript' }}
+  {% when 'coffeescript', 'coffee', 'coffee-script' %}
+    {{ 'CoffeeScript' }}
+  {% when 'cs', 'csharp' %}
+   {{ 'C#' }}
+  {% when 'erl' %}
+    {{ 'Erlang' }}
+  {% when 'graphql' %}
+   {{ 'GraphQL' }}
+  {% when 'haskell', 'hs' %}
+   {{ 'Haskell' }}
+  {% when 'javascript', 'js' %}
+    {{ 'JavaScript' }}
+  {% when 'make', 'mf', 'gnumake', 'bsdmake' %}
+    {{ 'Makefile' }}
+  {% when 'md', 'mkd' %}
+    {{ 'Markdown' }}
+  {% when 'm' %}
+    {{ 'Matlab' }}
+  {% when 'objective_c', 'objc', 'obj-c', 'obj_c', 'objectivec' %}
+    {{ 'Objective-C' }}
+  {% when 'perl', 'pl' %}
+    {{ 'Perl' }}
+  {% when 'php','php3','php4','php5' %}
+    {{ 'PHP' }}
+  {% when 'py' %}
+    {{ 'Python' }}
+  {% when 'rb' %}
+    {{ 'Ruby' }}
+  {% when 'rs','no_run','ignore','should_panic' %}
+    {{ 'Rust' }}
+  {% when 'bash', 'zsh', 'ksh', 'sh' %}
+    {{ 'Shell' }}
+  {% when 'st', 'squeak' %}
+    {{ 'Smalltalk' }}
+  {% when 'tex'%}
+    {{ 'TeX' }}
+  {% when 'latex' %}
+    {{ 'LaTex' }}
+  {% when 'ts', 'typescript' %}
+    {{ 'TypeScript' }}
+  {% when 'vb', 'visualbasic' %}
+    {{ 'Visual Basic' }}
+  {% when 'vue', 'vuejs' %}
+    {{ 'Vue.js' }}
+  {% when 'yml' %}
+    {{ 'YAML' }}
+  {% when 'css', 'html', 'scss', 'ssh', 'toml', 'xml', 'yaml', 'json' %}
+    {{ _lang | upcase }}
+  {% else %}
+    {{ _lang | capitalize }}
+{% endcase %}

_includes/mermaid.html

@@ -2,13 +2,39 @@
   mermaid-js loader
 -->
 
-<script src="https://cdn.jsdelivr.net/npm/mermaid@8/dist/mermaid.min.js"></script>
+<script src="{{ site.data.assets[origin].mermaid.js | relative_url }}"></script>
+
 <script>
   $(function() {
+    function updateMermaid(event) {
+      if (event.source === window && event.data &&
+            event.data.direction === ModeToggle.ID) {
+
+        const mode = event.data.message;
+
+        if (typeof mermaid === "undefined") {
+          return;
+        }
+
+        let expectedTheme = (mode === ModeToggle.DARK_MODE? "dark" : "default");
+        let config = { theme: expectedTheme };
+
+        /* Re-render the SVG › <https://github.com/mermaid-js/mermaid/issues/311#issuecomment-332557344> */
+        $(".mermaid").each(function() {
+          let svgCode = $(this).prev().children().html();
+          $(this).removeAttr("data-processed");
+          $(this).html(svgCode);
+        });
+
+        mermaid.initialize(config);
+        mermaid.init(undefined, ".mermaid");
+      }
+    }
+
     let initTheme = "default";
 
-    if ($("html[mode=dark]").length > 0
-      || ($("html[mode]").length == 0
+    if ($("html[data-mode=dark]").length > 0
+      || ($("html[data-mode]").length == 0
         && window.matchMedia("(prefers-color-scheme: dark)").matches ) ) {
       initTheme = "dark";
     }
@@ -25,5 +51,7 @@
     });
 
     mermaid.initialize(mermaidConf);
+
+    window.addEventListener("message", updateMermaid);
   });
 </script>

_includes/mode-toggle.html

@@ -2,14 +2,13 @@
   Switch the mode between dark and light.
 -->
 
-<i class="mode-toggle fas fa-adjust"></i>
-
 <script type="text/javascript">
-
   class ModeToggle {
     static get MODE_KEY() { return "mode"; }
+    static get MODE_ATTR() { return "data-mode"; }
     static get DARK_MODE() { return "dark"; }
     static get LIGHT_MODE() { return "light"; }
+    static get ID() { return "mode-toggle"; }
 
     constructor() {
       if (this.hasMode) {
@@ -24,10 +23,10 @@
         }
       }
 
-      var self = this;
+      let self = this;
 
       /* always follow the system prefers */
-      this.sysDarkPrefers.addListener(function() {
+      this.sysDarkPrefers.addEventListener("change", () => {
         if (self.hasMode) {
           if (self.isDarkMode) {
             if (!self.isSysDarkPrefer) {
@@ -43,34 +42,19 @@
           self.clearMode();
         }
 
-        self.updateMermaid();
+        self.notify();
+
       });
 
     } /* constructor() */
 
-
-    setDark() {
-      $('html').attr(ModeToggle.MODE_KEY, ModeToggle.DARK_MODE);
-      sessionStorage.setItem(ModeToggle.MODE_KEY, ModeToggle.DARK_MODE);
-    }
-
-    setLight() {
-      $('html').attr(ModeToggle.MODE_KEY, ModeToggle.LIGHT_MODE);
-      sessionStorage.setItem(ModeToggle.MODE_KEY, ModeToggle.LIGHT_MODE);
-    }
-
-    clearMode() {
-      $('html').removeAttr(ModeToggle.MODE_KEY);
-      sessionStorage.removeItem(ModeToggle.MODE_KEY);
-    }
-
     get sysDarkPrefers() { return window.matchMedia("(prefers-color-scheme: dark)"); }
 
     get isSysDarkPrefer() { return this.sysDarkPrefers.matches; }
 
-    get isDarkMode() { return this.mode == ModeToggle.DARK_MODE; }
+    get isDarkMode() { return this.mode === ModeToggle.DARK_MODE; }
 
-    get isLightMode() { return this.mode == ModeToggle.LIGHT_MODE; }
+    get isLightMode() { return this.mode === ModeToggle.LIGHT_MODE; }
 
     get hasMode() { return this.mode != null; }
 
@@ -79,67 +63,67 @@
     /* get the current mode on screen */
     get modeStatus() {
       if (this.isDarkMode
-        || (!this.hasMode && this.isSysDarkPrefer) ) {
+        || (!this.hasMode && this.isSysDarkPrefer)) {
         return ModeToggle.DARK_MODE;
       } else {
         return ModeToggle.LIGHT_MODE;
       }
     }
 
-    updateMermaid() {
-      if (typeof mermaid !== "undefined") {
-        let expectedTheme = (this.modeStatus === ModeToggle.DARK_MODE? "dark" : "default");
-        let config = { theme: expectedTheme };
-
-        /* re-render the SVG › <https://github.com/mermaid-js/mermaid/issues/311#issuecomment-332557344> */
-        $(".mermaid").each(function() {
-          let svgCode = $(this).prev().children().html();
-          $(this).removeAttr("data-processed");
-          $(this).html(svgCode);
-        });
-
-        mermaid.initialize(config);
-        mermaid.init(undefined, ".mermaid");
-      }
+    setDark() {
+      $('html').attr(ModeToggle.MODE_ATTR, ModeToggle.DARK_MODE);
+      sessionStorage.setItem(ModeToggle.MODE_KEY, ModeToggle.DARK_MODE);
     }
 
-    flipMode() {
-      if (this.hasMode) {
-        if (this.isSysDarkPrefer) {
-          if (this.isLightMode) {
-            this.clearMode();
-          } else {
-            this.setLight();
-          }
+    setLight() {
+      $('html').attr(ModeToggle.MODE_ATTR, ModeToggle.LIGHT_MODE);
+      sessionStorage.setItem(ModeToggle.MODE_KEY, ModeToggle.LIGHT_MODE);
+    }
 
-        } else {
-          if (this.isDarkMode) {
-            this.clearMode();
-          } else {
-            this.setDark();
-          }
-        }
+    clearMode() {
+      $('html').removeAttr(ModeToggle.MODE_ATTR);
+      sessionStorage.removeItem(ModeToggle.MODE_KEY);
+    }
 
-      } else {
-        if (this.isSysDarkPrefer) {
-          this.setLight();
-        } else {
-          this.setDark();
-        }
-      }
-
-      this.updateMermaid();
-
-    } /* flipMode() */
+    /* Notify another plugins that the theme mode has changed */
+    notify() {
+      window.postMessage({
+        direction: ModeToggle.ID,
+        message: this.modeStatus
+      }, "*");
+    }
 
   } /* ModeToggle */
 
-  let toggle = new ModeToggle();
+  const toggle = new ModeToggle();
 
-  $(".mode-toggle").click(function() {
+  function flipMode() {
+    if (toggle.hasMode) {
+      if (toggle.isSysDarkPrefer) {
+        if (toggle.isLightMode) {
+          toggle.clearMode();
+        } else {
+          toggle.setLight();
+        }
 
-    toggle.flipMode();
+      } else {
+        if (toggle.isDarkMode) {
+          toggle.clearMode();
+        } else {
+          toggle.setDark();
+        }
+      }
 
-  });
+    } else {
+      if (toggle.isSysDarkPrefer) {
+        toggle.setLight();
+      } else {
+        toggle.setDark();
+      }
+    }
+
+    toggle.notify();
+
+  } /* flipMode() */
 
 </script>

_includes/panel.html

@@ -1,57 +0,0 @@
-<!--
-  The Pannel on right side (Desktop views)
--->
-
-<div id="panel-wrapper" class="col-xl-3 pl-2 text-muted topbar-down">
-
-  <div class="access">
-
-  {% include update-list.html %}
-
-  {% if update_list.size > 0 %}
-
-    <div id="access-lastmod" class="post">
-      <span>{{- site.data.label.panel.lastmod | default: 'Recent Update' -}}</span>
-      <ul class="post-content pl-0 pb-1 ml-1 mt-2">
-
-      {% for item in update_list %}
-        {% assign index = item | split: "::" | last | plus: 0 %}
-        {% assign post = site.posts[index] %}
-        {% assign url = post.url | relative_url %}
-        <li><a href="{{ url }}">{{ post.title }}</a></li>
-      {% endfor %}
-
-      </ul>
-    </div> <!-- #access-lastmod -->
-
-  {% endif %}
-
-  {% include trending-tags.html %}
-
-  {% if trending_tags.size > 0 %}
-    <div id="access-tags">
-      <span>{{- site.data.label.panel.trending_tags | default: 'Trending Tags' -}}</span>
-      <div class="d-flex flex-wrap mt-3 mb-1 mr-3">
-
-      {% for tag_name in trending_tags %}
-        {% assign url = tag_name | slugify | url_encode | prepend: "/tags/" | append: "/" %}
-        <a class="post-tag" href="{{ url | relative_url }}">{{ tag_name }}</a>
-      {% endfor %}
-
-      </div>
-    </div>
-  {% endif %}
-  </div> <!-- .access -->
-
-  {% if include.toc %}
-    <!-- BS-toc.js will be loaded at medium priority -->
-    <script src="https://cdn.jsdelivr.net/gh/afeld/bootstrap-toc@1.0.1/dist/bootstrap-toc.min.js"></script>
-    <div id="toc-wrapper" class="pl-0 pr-4 mb-5">
-      <span class="pl-3 pt-2 mb-2">
-      {{- site.data.label.panel.toc | default: 'Contents' -}}
-      </span>
-      <nav id="toc" data-toggle="toc"></nav>
-    </div>
-  {% endif %}
-
-</div> <!-- #panel-wrapper -->

_includes/post-nav.html

@@ -5,26 +5,26 @@
 <div class="post-navigation d-flex justify-content-between">
   {% if page.previous.url %}
   <a href="{{ site.baseurl }}{{ page.previous.url }}" class="btn btn-outline-primary"
-    prompt="{{ site.data.label.post.button.previous | default: 'previous' }}">
+    prompt="{{ site.data.locales[lang].post.button.previous }}">
     <p>{{ page.previous.title }}</p>
   </a>
   {% else %}
-  <span class="btn btn-outline-primary disabled"
-    prompt="{{ site.data.label.post.button.previous | default: 'previous' }}">
+  <div class="btn btn-outline-primary disabled"
+    prompt="{{ site.data.locales[lang].post.button.previous }}">
     <p>-</p>
-  </span>
+  </div>
   {% endif %}
 
   {% if page.next.url %}
   <a href="{{ site.baseurl }}{{page.next.url}}" class="btn btn-outline-primary"
-    prompt="{{ site.data.label.post.button.next | default: 'next' }}">
+    prompt="{{ site.data.locales[lang].post.button.next }}">
     <p>{{ page.next.title }}</p>
   </a>
   {% else %}
-  <span class="btn btn-outline-primary disabled"
-    prompt="{{ site.data.label.post.button.next | default: 'next' }}">
+  <div class="btn btn-outline-primary disabled"
+    prompt="{{ site.data.locales[lang].post.button.next }}">
     <p>-</p>
-  </span>
+  </div>
   {% endif %}
 
 </div>

_includes/post-paginator.html

@@ -2,13 +2,14 @@
   The paginator for post list on HomgPage.
 -->
 
-<ul class="pagination mt-4 mb-0 pl-lg-2">
+<ul class="pagination align-items-center mt-4 mb-5 pl-lg-2">
   <!-- left arrow -->
   {% if paginator.previous_page %}
     {% assign prev_url = paginator.previous_page_path | relative_url %}
   {% else %}
     {% assign prev_url = "#" %}
   {% endif %}
+
   <li class="page-item {% unless paginator.previous_page %}disabled{% endunless %}">
     <a class="page-link btn-box-shadow" href="{{ prev_url }}" aria-label="previous-page">
       <i class="fas fa-angle-left"></i>
@@ -46,7 +47,7 @@
     {% if show %}
       <!-- show number -->
       <li class="page-item {% if i == paginator.page %} active{% endif %}">
-        <a class="page-link btn-box-shadow" href="{{ site.baseurl }}/{% if i > 1%}page{{ i }}/{% endif %}">{{ i }}</a>
+        <a class="page-link btn-box-shadow" href="{% if i > 1 %}{{ site.paginate_path | replace: ':num', i | relative_url }}{% else %}{{ '/' | relative_url }}{% endif %}">{{ i }}</a>
       </li>
     {% else %}
       <!-- hide number -->
@@ -65,12 +66,19 @@
 
   {% endfor %}
 
+  <!-- mobile pagination -->
+  <li class="page-index align-middle">
+    <span>{{ paginator.page }}</span>
+    <span class="text-muted">/ {{ paginator.total_pages }}</span>
+  </li>
+
   <!-- right arrow -->
   {% if paginator.next_page_path %}
     {% assign next_url = paginator.next_page_path | relative_url %}
   {% else %}
     {% assign next_url = "#" %}
   {% endif %}
+
   <li class="page-item {% unless paginator.next_page_path %}disabled{% endunless %}">
     <a class="page-link btn-box-shadow" href="{{ next_url }}" aria-label="next-page">
       <i class="fas fa-angle-right"></i>

_includes/post-sharing.html

@@ -3,10 +3,11 @@
 -->
 
 <div class="share-wrapper">
-  <span class="share-label text-muted mr-1">{{ site.data.label.post.share | default: 'Share' }}</span>
+  <span class="share-label text-muted mr-1">{{ site.data.locales[lang].post.share }}</span>
   <span class="share-icons">
     {% capture title %}{{ page.title }} - {{ site.title }}{% endcapture %}
-    {% assign url = page.url | absolute_url %}
+    {% assign title = title | url_encode %}
+    {% assign url = page.url | absolute_url | url_encode %}
 
     {% for share in site.data.share.platforms %}
       {% assign link = share.link | replace: 'TITLE', title | replace: 'URL', url %}
@@ -16,8 +17,11 @@
         </a>
     {% endfor %}
 
-    <i class="fa-fw fas fa-link small" onclick="copyLink()"
-        data-toggle="tooltip" data-placement="top" title="Copy link"></i>
+    <i id="copy-link" class="fa-fw fas fa-link small"
+        data-toggle="tooltip" data-placement="top"
+        title="{{ site.data.locales[lang].post.button.share_link.title }}"
+        data-title-succeed="{{ site.data.locales[lang].post.button.share_link.succeed }}">
+    </i>
 
   </span>
 </div>

_includes/read-time.html

@@ -1,9 +1,11 @@
 <!--
   Calculate the post's reading time, and display the word count in tooltip
  -->
+
 {% assign words = include.content | strip_html | number_of_words: "auto" %}
 
 <!-- words per minute  -->
+
 {% assign wpm = 180 %}
 {% assign min_time = 1 %}
 
@@ -13,7 +15,16 @@
   {% assign read_time = min_time %}
 {% endunless %}
 
+{% capture read_prompt %}
+  {{- site.data.locales[lang].post.read_time.prompt -}}
+{% endcapture %}
+
 <!-- return element -->
-<span class="readtime" data-toggle="tooltip" data-placement="bottom" title="{{ words }} words">
-  {{- read_time -}}{{" "}}{{- site.data.label.read_time_unit | default: "min" -}}
+<span class="readtime" data-toggle="tooltip" data-placement="bottom"
+  title="{{ words }} {{ site.data.locales[lang].post.words }}">
+  <em>{{- read_time -}}{{" "}}{{- site.data.locales[lang].post.read_time.unit -}}</em>
+  {%- if include.prompt -%}
+    {%- assign _prompt_words = read_prompt | number_of_words: 'auto' -%}
+    {%- unless _prompt_words > 1 -%}{{ " " }}{%- endunless -%}{{ read_prompt }}
+  {%- endif -%}
 </span>

_includes/refactor-content.html

@@ -8,10 +8,12 @@
   In order to allow a wide table to scroll horizontally,
   we suround the markdown table with `<div class="table-wrapper">` and `</div>`
 -->
-{% if _content contains '<table>' %}
+
+{% if _content contains '<table' %}
   {% assign _content = _content
-    | replace: '<table>', '<div class="table-wrapper"><table>'
+    | replace: '<table', '<div class="table-wrapper"><table'
     | replace: '</table>', '</table></div>'
+    | replace: '<code><div class="table-wrapper">', '<code>'
     | replace: '</table></div></code>', '</table></code>'
   %}
 {% endif %}
@@ -21,6 +23,7 @@
   https://github.com/penibelst/jekyll-compress-html/issues/101
   https://github.com/penibelst/jekyll-compress-html/issues/71#issuecomment-188144901
 -->
+
 {% if _content contains '<pre class="highlight">' %}
   {% assign _content = _content
     | replace: '<div class="highlight"><pre class="highlight"><code', '<div class="highlight"><code'
@@ -29,33 +32,251 @@
 {% endif %}
 
 <!-- Add attribute 'hide-bullet' to the checkbox list -->
+
 {% if _content contains '<li class="task-list-item"><' %}
   {% assign _content = _content
     | replace: '"task-list-item"><', '"task-list-item" hide-bullet><'
   %}
 {% endif %}
 
-{% if _content contains '<img src="' %}
+<!-- images -->
+
+{% assign IMG_TAG = '<img ' %}
+
+{% if _content contains IMG_TAG %}
+  {% assign _img_content = nil %}
+  {% assign _img_snippets = _content | split: IMG_TAG %}
+
+  {% for _img_snippet in _img_snippets %}
+    {% if forloop.first %}
+      {% assign _img_content = _img_snippet %}
+      {% continue %}
+    {% endif %}
+
+    {% assign _width = nil %}
+    {% assign _height = nil %}
+    {% assign _src = nil %}
+
+    {% assign _left = _img_snippet | split: '>' | first %}
+    {% assign _right = _img_snippet | remove: _left %}
+
+    {% assign _left = _left | remove: ' /' %}
+    {% assign _left = _left | replace: ' w=', ' width=' | replace: ' h=', ' height=' %}
+    {% assign _attrs = _left | split: ' ' %}
+
+    {% for _attr in _attrs %}
+      {% assign _pair = _attr | split: '=' %}
+      {% if _pair.size < 2 %}
+        {% continue %}
+      {% endif %}
+
+      {% capture _key %}{{ _pair | first }}{% endcapture %}
+      {% capture _value %}{{ _pair | last | replace: '"', '' }}{% endcapture %}
+
+      {% case _key %}
+        {% when 'width' %}
+          {% assign _width = _value %}
+        {% when 'height' %}
+          {% assign _height = _value %}
+        {% when 'src' %}
+          {% assign _src = _value %}
+      {% endcase %}
+
+      {% if _width and _height and _src %}
+        {% break %}
+      {% endif %}
+    {% endfor %}
+
+    {% if _src %}
+      {% unless _src contains '://' %}
+
+        <!-- Add CDN URL -->
+        {% if site.img_cdn %}
+          {% if site.img_cdn contains '//' %}
+            {% assign _src_prefix = site.img_cdn %}
+          {% else %}
+            {% assign _src_prefix = site.img_cdn | relative_url %}
+          {% endif %}
+        {% else %}
+          {% assign _src_prefix = site.baseurl %}
+        {% endif %}
+
+        <!-- Add image path -->
+        {% if page.img_path %}
+          {% assign _path = page.img_path %}
+          {% assign last_char = _path | slice: -1 %}
+
+          {% unless last_char == '/' %}
+            {% assign _path = _path | append: '/' %}
+          {% endunless %}
+
+          {% assign _src_prefix = _src_prefix | append: _path %}
+        {% endif %}
+
+        {% assign _final_src = _src_prefix | append: _src %}
+        {% assign _left = _left | replace: _src, _final_src %}
+
+      {% endunless %}
+
+      <!-- lazy-load images <https://github.com/ApoorvSaxena/lozad.js#usage> -->
+
+      {% assign _left = _left | replace: 'src=', 'data-src=' %}
+
+    {% endif %}
+
+    <!-- Add SVG placehoder to prevent layout reflow -->
+
+    {% if _width and _height %}
+      {%- capture _svg -%}
+        src="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 {{ _width }} {{ _height }}'%3E%3C/svg%3E"
+      {%- endcapture -%}
+
+      {% assign _left =  _svg | append: ' ' | append: _left %}
+    {% endif %}
+
+    <!-- Bypass the HTML-proofer test -->
+    {% assign _left = _left | append: ' data-proofer-ignore' %}
+
+    {% assign _img_content = _img_content | append: IMG_TAG | append: _left | append: _right %}
+
+  {% endfor %}
+
+  {% assign _content = _img_content %}
+
+{% endif %}
+
+<!-- Add header for code snippets -->
+
+{% if _content contains '<div class="highlight"><code>' %}
+  {% assign _code_spippets = _content | split: '<div class="highlight"><code>' %}
+  {% assign _new_content = '' %}
+
+  {% for _snippet in _code_spippets %}
+
+    {% if forloop.last %}
+      {% assign _new_content = _new_content | append: _snippet %}
+
+    {% else %}
+
+      {% assign _left = _snippet | split: '><' | last%}
+
+      {% if _left contains 'file="' %}
+        {% assign _label_text = _left | split: 'file="' | last | split: '"' | first %}
+        {% assign _label_icon = 'far fa-file-code' %}
+      {% else %}
+        {% assign _lang = _left | split: 'language-' | last | split: ' ' | first %}
+        {% capture _label_text %}{% include language-alias.html language=_lang %}{% endcapture %}
+        {% assign _label_icon = 'fas fa-code small' %}
+      {% endif %}
+
+      {% capture _label %}
+        <span data-label-text="{{ _label_text | strip }}"><i class="{{ _label_icon }}"></i></span>
+      {% endcapture %}
+
+      {% assign _new_content = _new_content | append: _snippet
+          | append: '<div class="code-header">'
+          | append: _label
+          | append: '<button aria-label="copy" data-title-succeed="'
+          | append: site.data.locales[lang].post.button.copy_code.succeed
+          | append: '"><i class="far fa-clipboard"></i></button></div>'
+          | append: '<div class="highlight"><code>'
+      %}
+
+    {% endif %}
+
+  {% endfor %}
+
+  {% assign _content = _new_content %}
+
+{% endif %}
+
+<!-- Create heading anchors -->
+
+{% assign heading_levels = '2,3,4,5' | split: ',' %}
+{% assign _heading_content = _content %}
+
+{% for level in heading_levels %}
+  {% capture mark_start %}<h{{ level }} id="{% endcapture %}
+  {% capture mark_end %}</h{{ level }}>{% endcapture %}
+
+  {% if _heading_content contains mark_start %}
+    {% assign _new_content = nil %}
+    {% assign heading_snippets = _heading_content | split: mark_start %}
+
+    {% for snippet in heading_snippets %}
+      {% if forloop.first %}
+        {% assign _new_content = snippet %}
+        {% continue %}
+      {% endif %}
+
+      {% assign id = snippet | split: '"' | first %}
+      {% capture anchor %}<a href="#{{ id }}" class="anchor text-muted"><i class="fas fa-hashtag"></i></a>{% endcapture %}
+
+      {% assign left = snippet | split: mark_end | first %}
+      {% assign right = snippet | slice: left.size, snippet.size %}
+      {% assign left = left | replace: '">', '"><span class="mr-2">' | append: '</span>' %}
+
+      {% assign _new_content = _new_content | append: mark_start
+          | append: left | append: anchor | append: right
+      %}
+
+    {% endfor %}
+
+    {% assign _heading_content = _new_content %}
 
-  {% if site.img_cdn != '' %}
-    {% assign img_path_replacement = '<img src="' | append: site.img_cdn | append: '/' %}
-  {% else %}
-    {% assign img_path_replacement = '<img src="' | append: site.baseurl | append: '/' %}
   {% endif %}
+{% endfor %}
 
-  {% assign _content = _content | replace: '<img src="/', img_path_replacement %}
+{% assign _content = _heading_content %}
 
-  <!-- lazy-load images <https://github.com/ApoorvSaxena/lozad.js#usage> -->
-  {% assign img_placehodler
-    = 'data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7' %}
+<!-- Wrap prompt element of blockquote with the <div> tag -->
 
-  {% assign lozad_replacement = '<img src="'
-    | append: img_placehodler
-    | append: '" data-src="' %}
+{% assign blockquote_start = '<blockquote class=' %}
+{% assign blockquote_end = '</blockquote>' %}
+{% assign cls_prefix = 'prompt-' %}
 
-  {% assign _content = _content | replace: '<img src="', lozad_replacement %}
+{% if _content contains blockquote_start %}
+
+  {% assign _prompt_content = nil %}
+  {% assign _prompt_snippets = _content | split: blockquote_start %}
+
+  {% for _snippet in _prompt_snippets %}
+
+    {% if forloop.first %}
+      {% assign _prompt_content =  _snippet %}
+      {% continue %}
+    {% endif %}
+
+    {% assign left = _snippet | split: blockquote_end | first %}
+    {% assign right = _snippet | slice: left.size, _snippet.size %}
+
+    {% assign cls_str = left | split: '>' | first %}
+    {% assign cls_array = cls_str | remove: '"' | split: ' ' %}
+    {% assign is_prompt = false %}
+
+    {% for cls in cls_array %}
+      {% if cls contains cls_prefix %}
+        {% assign is_prompt = true %}
+        {% break %}
+      {% endif %}
+    {% endfor %}
+
+    {% unless is_prompt %}
+      {% assign _prompt_content = _prompt_content | append: blockquote_start | append: _snippet %}
+      {% continue %}
+    {% endunless %}
+
+    {% assign left = left | slice: cls_str.size, left.size %}
+    {% assign left = cls_str | append: '><div' | append: left | append: '</div>' %}
+
+    {% assign _prompt_content = _prompt_content | append: blockquote_start | append: left | append: right %}
+
+  {% endfor %}
+
+  {% assign _content = _prompt_content %}
 
 {% endif %}
 
 <!-- return -->
+
 {{ _content }}

_includes/related-posts.html

@@ -60,7 +60,6 @@
 {% assign less = TOTAL_SIZE | minus: index_list.size %}
 
 {% if less > 0 %}
-
   {% for i in (0..last_index) %}
     {% assign post = site.posts[i] %}
     {% if post.url != page.url  %}
@@ -74,14 +73,12 @@
       {% endunless %}
     {% endif %}
   {% endfor %}
-
 {% endif %}
 
-
 {% if index_list.size > 0 %}
   <div id="related-posts" class="mt-5 mb-2 mb-sm-4">
     <h3 class="pt-2 mt-1 mb-4 ml-1"
-      data-toc-skip>{{ site.data.label.post.relate_posts | default: 'Further Reading' }}</h3>
+      data-toc-skip>{{ site.data.locales[lang].post.relate_posts }}</h3>
     <div class="card-deck mb-4">
     {% for entry in index_list %}
       {% assign index = entry | plus: 0 %}
@@ -89,12 +86,12 @@
       <div class="card">
         <a href="{{ post.url | relative_url }}">
           <div class="card-body">
-            {% include timeago.html date=post.date class="small" %}
+            {% include datetime.html date=post.date class="small" %}
             <h3 class="pt-0 mt-1 mb-3" data-toc-skip>{{ post.title }}</h3>
             <div class="text-muted small">
               <p>
                 {% include no-linenos.html content=post.content %}
-                {{ content | markdownify | strip_html | truncate: 200 }}
+                {{ content | markdownify | strip_html | truncate: 200 | escape }}
               </p>
             </div>
           </div>

_includes/search-loader.html

@@ -5,7 +5,7 @@
 
 {% capture result_elem %}
 <div class="pl-1 pr-1 pl-sm-2 pr-sm-2 pl-lg-4 pr-lg-4 pl-xl-0 pr-xl-0">
-  <a href="{{ site.url }}{url}">{title}</a>
+  <a href="{url}">{title}</a>
   <div class="post-meta d-flex flex-column flex-sm-row text-muted mt-1 mb-1">
     {categories}
     {tags}
@@ -14,9 +14,9 @@
 </div>
 {% endcapture %}
 
-{% capture not_found %}<p class="mt-5">Oops! No result founds.</p>{% endcapture %}
+{% capture not_found %}<p class="mt-5">{{ site.data.locales[lang].search.no_results }}</p>{% endcapture %}
 
-<script src="https://cdn.jsdelivr.net/npm/simple-jekyll-search@1.7.3/dest/simple-jekyll-search.min.js"></script>
+<script src="{{ site.data.assets[origin].search.js | relative_url }}"></script>
 
 <script>
 SimpleJekyllSearch({

_includes/search-results.html

@@ -4,15 +4,7 @@
 <div id="search-result-wrapper" class="d-flex justify-content-center unloaded">
   <div class="col-12 col-sm-11 post-content">
     <div id="search-hints">
-      <h4 class="text-muted mb-4">{{ site.data.label.panel.trending_tags | default: 'Trending Tags' }}</h4>
-
       {% include trending-tags.html %}
-
-      {% for tag in trending_tags %}
-        {% capture url %}/tags/{{ tag | slugify | url_encode }}/{% endcapture %}
-        <a class="post-tag" href="{{ url | relative_url }}">{{ tag | replace: '-', ' ' }}</a>
-      {% endfor %}
-
     </div>
     <div id="search-results" class="d-flex flex-wrap justify-content-center text-muted mt-3"></div>
   </div>

_includes/sidebar.html

@@ -3,37 +3,38 @@
 -->
 
 <div id="sidebar" class="d-flex flex-column align-items-end">
-
   <div class="profile-wrapper text-center">
     <div id="avatar">
-      <a href="{{ '/' | relative_url }}" alt="avatar" class="mx-auto">
-        {% capture avatar_url %}
-          {%- if site.avatar contains '://' -%}
-            {{ site.avatar }}
-          {%- elsif site.img_cdn != '' and site.img_cdn -%}
-            {{ site.avatar | prepend: site.img_cdn }}
-          {%- else -%}
-            {{ site.avatar | relative_url }}
-          {%- endif -%}
-        {% endcapture %}
-        <img src="{{ avatar_url }}" alt="avatar" onerror="this.style.display='none'">
+      <a href="{{ '/' | relative_url }}" class="mx-auto">
+        {% if site.avatar != empty and site.avatar %}
+          {% capture avatar_url %}
+            {% if site.avatar contains '://' %}
+              {{ site.avatar }}
+            {% elsif site.img_cdn != empty and site.img_cdn %}
+              {{ site.avatar | prepend: site.img_cdn }}
+            {% else %}
+              {{ site.avatar | relative_url }}
+            {% endif %}
+          {% endcapture %}
+          <img src="{{ avatar_url | strip }}" alt="avatar" onerror="this.style.display='none'">
+        {% endif %}
       </a>
     </div>
 
     <div class="site-title mt-3">
-      <a href="{{ '/' | relative_url }}">{{- site.title -}}</a>
+      <a href="{{ '/' | relative_url }}">{{ site.title }}</a>
     </div>
-
-    <div class="site-subtitle font-italic">{{- site.tagline -}}</div>
+    <div class="site-subtitle font-italic">{{ site.tagline }}</div>
 
   </div><!-- .profile-wrapper -->
 
   <ul class="w-100">
+
     <!-- home -->
     <li class="nav-item{% if page.layout == 'home' %}{{ " active" }}{% endif %}">
       <a href="{{ '/' | relative_url }}" class="nav-link">
         <i class="fa-fw fas fa-home ml-xl-3 mr-xl-3 unloaded"></i>
-        <span>{{ "HOME" }}</span>
+        <span>{{ site.data.locales[lang].tabs.home | upcase }}</span>
       </a>
     </li>
     <!-- the real tabs -->
@@ -41,14 +42,26 @@
     <li class="nav-item{% if tab.url == page.url %}{{ " active" }}{% endif %}">
       <a href="{{ tab.url | relative_url }}" class="nav-link">
         <i class="fa-fw {{ tab.icon }} ml-xl-3 mr-xl-3 unloaded"></i>
-        <span>{{ tab.title | upcase }}</span>
+        {% capture tab_name %}{{ tab.url | split: '/' }}{% endcapture %}
+
+        <span>{{ site.data.locales[lang].tabs.[tab_name] | default: tab.title | upcase }}</span>
       </a>
     </li> <!-- .nav-item -->
     {% endfor %}
 
   </ul> <!-- ul.nav.flex-column -->
 
-  <div class="sidebar-bottom mt-auto d-flex flex-wrap justify-content-center">
+  <div class="sidebar-bottom mt-auto d-flex flex-wrap justify-content-center align-items-center">
+
+    {% unless site.theme_mode %}
+      <button class="mode-toggle btn" aria-label="Switch Mode">
+        <i class="fas fa-adjust"></i>
+      </button>
+
+      {% if site.data.contact.size > 0 %}
+        <span class="icon-border"></span>
+      {% endif %}
+    {% endunless %}
 
     {% for entry in site.data.contact %}
       {% capture url %}
@@ -68,7 +81,6 @@
 
       {% if url %}
       <a href="{{ url }}" aria-label="{{ entry.type }}"
-        {% unless site.theme_mode %}class="order-{{ forloop.index | plus: 2 }}"{% endunless %}
         {% unless entry.noblank %}target="_blank" rel="noopener"{% endunless %}>
         <i class="{{ entry.icon }}"></i>
       </a>
@@ -76,16 +88,6 @@
 
     {% endfor %}
 
-    {% unless site.theme_mode %}
-      {% if site.data.contact.size > 0 %}
-        <span class="icon-border order-2"></span>
-      {% endif %}
-
-      <span id="mode-toggle-wrapper" class="order-1">
-        {% include mode-toggle.html %}
-      </span>
-    {% endunless %}
-
   </div> <!-- .sidebar-bottom -->
 
 </div><!-- #sidebar -->

_includes/timeago.html

@@ -1,31 +0,0 @@
-<!--
-  Date format snippet
-  See: /assets/js/_utils/timeage.js
--->
-
-{% assign tooltip_df = site.data.date_format.tooltip | default: '%a, %b %e, %Y, %l:%M %p %z' %}
-{% assign post_long_df = site.data.date_format.post.long | default: '%b %e, %Y' %}
-{% assign post_short_df = site.data.date_format.post.short | default: '%b %e' %}
-
-<span class="timeago {% if include.class %}{{ include.class }}{% endif %}"
-  {% if include.tooltip %}
-    data-toggle="tooltip"
-    data-placement="bottom"
-    title="{{ include.date | date: tooltip_df }}"
-  {% endif %}
-
-  {% if include.prefix %}prefix="{{ include.prefix }} "{% endif%}
-  {% if include.prep %}prep="{{ include.prep }}"{% endif %} >
-
-  {% assign this_year = site.time | date: "%Y" %}
-  {% assign post_year = include.date | date: "%Y" %}
-
-  {% if post_year == this_year %}
-    {{ include.date | date: post_short_df }}
-  {% else %}
-    {{ include.date | date: post_long_df }}
-  {% endif %}
-
-  <i class="unloaded">{{ include.date | date_to_xmlschema }}</i>
-
-</span>

_includes/toc.html

@@ -0,0 +1,16 @@
+{% assign enable_toc = false %}
+{% if site.toc and page.toc %}
+  {% if page.content contains '<h2' or page.content contains '<h3' %}
+    {% assign enable_toc = true %}
+  {% endif %}
+{% endif %}
+
+{% if enable_toc %}
+<!-- BS-toc.js will be loaded at medium priority -->
+<script src="{{ site.data.assets[origin].bootstrap-toc.js | relative_url }}"></script>
+
+<div id="toc-wrapper" class="pl-0 pr-4 mb-5">
+  <div class="panel-heading pl-3 pt-2 mb-2">{{- site.data.locales[lang].panel.toc -}}</div>
+  <nav id="toc" data-toggle="toc"></nav>
+</div>
+{% endif %}

_includes/topbar.html

@@ -2,40 +2,41 @@
   The Top Bar
 -->
 
-<div id="topbar-wrapper" class="row justify-content-center topbar-down">
-  <div id="topbar" class="col-11 d-flex h-100 align-items-center justify-content-between">
+<div id="topbar-wrapper">
+  <div id="topbar" class="container d-flex align-items-center justify-content-between h-100 pl-3 pr-3 pl-md-4 pr-md-4">
     <span id="breadcrumb">
 
     {% assign paths = page.url | split: '/' %}
 
-    {% if paths.size == 0 %}
+    {% if paths.size == 0 or page.layout == 'home' %}
       <!-- index page -->
-      <span>{{ 'Posts' }}</span>
+      <span>{{ site.data.locales[lang].tabs.home | capitalize }}</span>
+
     {% else %}
 
       {% for item in paths %}
 
         {% if forloop.first %}
-          {% unless page.layout == 'post' %}
           <span>
-            <a href="{{ '/' | relative_url }}">{{ 'Home' }}</a>
+            <a href="{{ '/' | relative_url }}">
+              {{ site.data.locales[lang].tabs.home | capitalize }}
+            </a>
           </span>
-          {% endunless %}
 
         {% elsif forloop.last %}
-          <span>{{ page.title }}</span>
 
-        {% else %}
-        <span>
-          {% assign url = item %}
-          {% if item == 'posts' and page.layout == 'post' %}
-            {% assign url = '/' %}
+          {% if page.collection == 'tabs' %}
+            <span>{{ site.data.locales[lang].tabs[item] | default: page.title }}</span>
+          {% else %}
+            <span>{{ page.title }}</span>
           {% endif %}
-          <a href="{{ url | relative_url }}">
-            {{ item | capitalize }}
-          </a>
-        </span>
 
+        {% elsif page.layout == 'category' or page.layout == 'tag' %}
+          <span>
+            <a href="{{ item | relative_url }}">
+              {{ site.data.locales[lang].tabs[item] | default: page.title }}
+            </a>
+          </span>
         {% endif %}
 
       {% endfor %}
@@ -48,11 +49,12 @@
 
     <div id="topbar-title">
       {% if page.layout == 'home' %}
-        {{- site.title -}}
-      {% elsif page.dynamic_title %}
-        {{- page.title -}}
+        {{- site.data.locales[lang].title | default: site.title -}}
+      {% elsif page.collection == 'tabs' or page.layout == 'page' %}
+        {%- capture tab_key -%}{{ page.url | split: '/' }}{%- endcapture -%}
+        {{- site.data.locales[lang].tabs[tab_key] | default: page.title -}}
       {% else %}
-        {{- page.layout | capitalize -}}
+        {{- site.data.locales[lang].layout[page.layout] | default: page.layout | capitalize -}}
       {% endif %}
     </div>
 
@@ -60,10 +62,9 @@
     <span id="search-wrapper" class="align-items-center">
       <i class="fas fa-search fa-fw"></i>
       <input class="form-control" id="search-input" type="search"
-        aria-label="search" autocomplete="off" placeholder="{{ site.data.label.search_hint | default: 'Search' }}...">
-      <i class="fa fa-times-circle fa-fw" id="search-cleaner"></i>
+        aria-label="search" autocomplete="off" placeholder="{{ site.data.locales[lang].search.hint | capitalize }}...">
     </span>
-    <span id="search-cancel" >Cancel</span>
+    <span id="search-cancel" >{{ site.data.locales[lang].search.cancel }}</span>
   </div>
 
 </div>

_includes/trending-tags.html

@@ -34,3 +34,17 @@
     {% endif %}
   {% endfor %}
 {% endfor %}
+
+{% if trending_tags.size > 0 %}
+  <div id="access-tags">
+    <div class="panel-heading">{{- site.data.locales[lang].panel.trending_tags -}}</div>
+    <div class="d-flex flex-wrap mt-3 mb-1 mr-3">
+
+    {% for tag_name in trending_tags %}
+      {% assign url = tag_name | slugify | url_encode | prepend: "/tags/" | append: "/" %}
+      <a class="post-tag" href="{{ url | relative_url }}">{{ tag_name }}</a>
+    {% endfor %}
+
+    </div>
+  </div>
+{% endif %}

_includes/update-list.html

@@ -22,3 +22,19 @@
 {% for entry in all_list limit:MAX_SIZE %}
   {% assign update_list = update_list | push: entry %}
 {% endfor %}
+
+{% if update_list.size > 0 %}
+
+  <div id="access-lastmod" class="post">
+    <div class="panel-heading">{{- site.data.locales[lang].panel.lastmod -}}</div>
+    <ul class="post-content pl-0 pb-1 ml-1 mt-2">
+      {% for item in update_list %}
+        {% assign index = item | split: "::" | last | plus: 0 %}
+        {% assign post = site.posts[index] %}
+        {% assign url = post.url | relative_url %}
+      <li><a href="{{ url }}">{{ post.title }}</a></li>
+      {% endfor %}
+    </ul>
+  </div> <!-- #access-lastmod -->
+
+{% endif %}

_javascript/commons/mode-toggle.js

@@ -0,0 +1,13 @@
+/*
+ * Listener for theme mode toggle
+ */
+$(function() {
+  $(".mode-toggle").click((e) => {
+    const $target = $(e.target);
+    let $btn = ($target.prop("tagName") === "button".toUpperCase() ?
+      $target : $target.parent());
+
+    $btn.blur(); // remove the clicking outline
+    flipMode();
+  });
+});

_javascript/commons/scroll-helper.js

@@ -0,0 +1,36 @@
+/**
+ * A tool for smooth scrolling and topbar switcher
+ */
+const ScrollHelper = (function () {
+  const $body = $("body");
+  const ATTR_TOPBAR_VISIBLE = "data-topbar-visible";
+  const topbarHeight = $("#topbar-wrapper").outerHeight();
+
+  let scrollUpCount = 0; // the number of times the scroll up was triggered by ToC or anchor
+  let topbarLocked = false;
+  let orientationLocked = false;
+
+  return {
+    hideTopbar: () => $body.attr(ATTR_TOPBAR_VISIBLE, false),
+    showTopbar: () => $body.attr(ATTR_TOPBAR_VISIBLE, true),
+
+    // scroll up
+
+    addScrollUpTask: () => {
+      scrollUpCount += 1;
+      if (!topbarLocked) { topbarLocked = true; }
+    },
+    popScrollUpTask: () => scrollUpCount -= 1,
+    hasScrollUpTask: () => scrollUpCount > 0,
+    topbarLocked: () => topbarLocked === true,
+    unlockTopbar: () => topbarLocked = false,
+    getTopbarHeight: () => topbarHeight,
+
+    // orientation change
+
+    orientationLocked: () => orientationLocked === true,
+    lockOrientation: () => orientationLocked = true,
+    unLockOrientation: () => orientationLocked = false
+  };
+
+}());

_javascript/commons/search-display.js

@@ -3,12 +3,9 @@
 */
 
 $(function() {
-
   const btnSbTrigger = $("#sidebar-trigger");
   const btnSearchTrigger = $("#search-trigger");
   const btnCancel = $("#search-cancel");
-  const btnClear = $("#search-cleaner");
-
   const main = $("#main");
   const topbarTitle = $("#topbar-title");
   const searchWrapper = $("#search-wrapper");
@@ -33,8 +30,7 @@ $(function() {
     };
   }());
 
-
-  /*--- Actions in small screens (Sidebar unloaded) ---*/
+  /*--- Actions in mobile screens (Sidebar hidden) ---*/
 
   const mobileSearchBar = (function () {
     return {
@@ -75,7 +71,6 @@ $(function() {
             hints.removeClass("unloaded");
           }
           resultWrapper.addClass("unloaded");
-          btnClear.removeClass("visible");
           main.removeClass("unloaded");
 
           // now the release method must be called after $(#main) display
@@ -92,7 +87,6 @@ $(function() {
 
   }());
 
-
   function isMobileView() {
     return btnCancel.hasClass("loaded");
   }
@@ -116,38 +110,20 @@ $(function() {
     searchWrapper.removeClass("input-focus");
   });
 
-  input.on("keyup", function(e) {
-    if (e.keyCode === 8 && input.val() === "") {
-      if (!isMobileView()) {
-        resultSwitch.off();
-      } else {
+  input.on("input", () => {
+    if (input.val() === "") {
+      if (isMobileView()) {
         hints.removeClass("unloaded");
+      } else {
+        resultSwitch.off();
       }
+
     } else {
-      if (input.val() !== "") {
-        resultSwitch.on();
-
-        if (!btnClear.hasClass("visible")) {
-          btnClear.addClass("visible");
-        }
-
-        if (isMobileView()) {
-          hints.addClass("unloaded");
-        }
+      resultSwitch.on();
+      if (isMobileView()) {
+        hints.addClass("unloaded");
       }
     }
   });
 
-  btnClear.on("click", function() {
-    input.val("");
-    if (isMobileView()) {
-      hints.removeClass("unloaded");
-      results.empty();
-    } else {
-      resultSwitch.off();
-    }
-    input.focus();
-    btnClear.removeClass("visible");
-  });
-
 });

_javascript/commons/topbar-switch.js

@@ -1,69 +0,0 @@
-/*
- * Hide Header on scroll down
- */
-
-$(function() {
-
-  const topbarWrapper = $("#topbar-wrapper");
-  const toc = $("#toc-wrapper");
-  const access = $(".access");
-  const searchInput = $("#search-input");
-
-  let didScroll;
-  let lastScrollTop = 0;
-
-  const delta = 5;
-  const topbarHeight = topbarWrapper.outerHeight();
-
-  function hasScrolled() {
-    var st = $(this).scrollTop();
-
-    /* Make sure they scroll more than delta */
-    if (Math.abs(lastScrollTop - st) <= delta) {
-      return;
-    }
-
-    if (st > lastScrollTop && st > topbarHeight) {
-      /* Scroll Down */
-      topbarWrapper.removeClass("topbar-down").addClass("topbar-up");
-
-      if (toc.length > 0) {
-        toc.removeClass("topbar-down");
-      }
-
-      if (access.length > 0) {
-        access.removeClass("topbar-down");
-      }
-
-      if (searchInput.is(":focus")) {
-        searchInput.blur(); /* remove focus */
-      }
-
-    } else if (st + $(window).height() < $(document).height()) {
-      /* Scroll Up */
-      topbarWrapper.removeClass("topbar-up").addClass("topbar-down");
-      if (toc.length > 0) {
-        toc.addClass("topbar-down");
-      }
-      if (access.length > 0) {
-        access.addClass("topbar-down");
-      }
-    }
-
-    lastScrollTop = st;
-  }
-
-  $(window).scroll(function(event) {
-    if ($("#topbar-title").is(":hidden")) { /* Not in small screens */
-      didScroll = true;
-    }
-  });
-
-  setInterval(function() {
-    if (didScroll) {
-      hasScrolled();
-      didScroll = false;
-    }
-  }, 250);
-
-});

_javascript/commons/topbar-switcher.js

@@ -0,0 +1,90 @@
+/*
+ * Hide Header on scroll down
+ */
+
+$(function() {
+  const $searchInput = $("#search-input");
+  const delta = ScrollHelper.getTopbarHeight();
+
+  let didScroll;
+  let lastScrollTop = 0;
+
+  function hasScrolled() {
+    let st = $(this).scrollTop();
+
+    /* Make sure they scroll more than delta */
+    if (Math.abs(lastScrollTop - st) <= delta) {
+      return;
+    }
+
+    if (st > lastScrollTop ) { // Scroll Down
+      ScrollHelper.hideTopbar();
+
+      if ($searchInput.is(":focus")) {
+        $searchInput.blur(); /* remove focus */
+      }
+
+    } else  { // Scroll up
+      // has not yet scrolled to the bottom of the screen, that is, there is still space for scrolling
+      if (st + $(window).height() < $(document).height()) {
+
+        if (ScrollHelper.hasScrollUpTask()) {
+          return;
+        }
+
+        if (ScrollHelper.topbarLocked()) { // avoid redundant scroll up event from smooth scrolling
+          ScrollHelper.unlockTopbar();
+        } else {
+          if (ScrollHelper.orientationLocked()) { // avoid device auto scroll up on orientation change
+            ScrollHelper.unLockOrientation();
+          } else {
+            ScrollHelper.showTopbar();
+          }
+        }
+      }
+    }
+
+    lastScrollTop = st;
+
+  } // hasScrolled()
+
+  function handleLandscape() {
+    if ($(window).scrollTop() === 0) {
+      return;
+    }
+    ScrollHelper.lockOrientation();
+    ScrollHelper.hideTopbar();
+  }
+
+  if (screen.orientation) {
+    screen.orientation.onchange = () => {
+      const type = screen.orientation.type;
+      if (type ===  "landscape-primary" || type === "landscape-secondary") {
+        handleLandscape();
+      }
+    };
+
+  } else {
+    // for the browsers that not support `window.screen.orientation` API
+    $(window).on("orientationchange",() => {
+      if ($(window).width() < $(window).height()) { // before rotating, it is still in portrait mode.
+        handleLandscape();
+      }
+    });
+  }
+
+  $(window).scroll(() => {
+    if (didScroll) {
+      return;
+    }
+    didScroll = true;
+  });
+
+  setInterval(() => {
+    if (didScroll) {
+      hasScrolled();
+      didScroll = false;
+    }
+  }, 250);
+
+});

_javascript/commons/topbar-title.js

@@ -1,46 +1,66 @@
 /*
- * Top bar title auto change while scrolling in mobile screens.
+ * Top bar title auto change while scrolling up/down in mobile screens.
 */
 
 $(function() {
+  const titleSelector = "div.post>h1:first-of-type";
+  const $pageTitle = $(titleSelector);
+  const $topbarTitle = $("#topbar-title");
 
-  const topbarTitle = $("#topbar-title");
-  const postTitle = $("div.post>h1");
+  if ($pageTitle.length === 0 /* on Home page */
+      || $pageTitle.hasClass("dynamic-title")
+      || $topbarTitle.is(":hidden")) {/* not in mobile views */
+    return;
+  }
 
-  const DEFAULT = topbarTitle.text().trim();
-
-  let title = (postTitle.length > 0) ?
-    postTitle.text().trim() : $("h1").text().trim();
+  const defaultTitleText = $topbarTitle.text().trim();
+  let pageTitleText = $pageTitle.text().trim();
+  let hasScrolled = false;
+  let lastScrollTop = 0;
 
   if ($("#page-category").length || $("#page-tag").length) {
     /* The title in Category or Tag page will be "<title> <count_of_posts>" */
-    if (/\s/.test(title)) {
-      title = title.replace(/[0-9]/g, "").trim();
+    if (/\s/.test(pageTitleText)) {
+      pageTitleText = pageTitleText.replace(/[0-9]/g, "").trim();
     }
   }
 
-  /* Replace topbar title while scroll screens. */
-  $(window).scroll(function () {
-    if ($("#post-list").length /* in Home page */
-      || postTitle.is(":hidden") /* is tab pages */
-      || topbarTitle.is(":hidden") /* not mobile screens */
-      || $("#sidebar.sidebar-expand").length) { /* when the sidebar trigger is clicked */
-      return false;
+  // When the page is scrolled down and then refreshed, the topbar title needs to be initialized
+  if ($pageTitle.offset().top < $(window).scrollTop()) {
+    $topbarTitle.text(pageTitleText);
+  }
+
+  let options = {
+    rootMargin: '-48px 0px 0px 0px', // 48px equals to the topbar height (3rem)
+    threshold: [0, 1]
+  };
+
+  let observer = new IntersectionObserver((entries) => {
+    if (!hasScrolled) {
+      hasScrolled = true;
+      return;
     }
 
-    if ($(this).scrollTop() >= 95) {
-      if (topbarTitle.text() !== title) {
-        topbarTitle.text(title);
+    let curScrollTop = $(window).scrollTop();
+    let isScrollDown = lastScrollTop < curScrollTop;
+    lastScrollTop = curScrollTop;
+    let heading = entries[0];
+
+    if (isScrollDown) {
+      if (heading.intersectionRatio === 0) {
+        $topbarTitle.text(pageTitleText);
       }
     } else {
-      if (topbarTitle.text() !== DEFAULT) {
-        topbarTitle.text(DEFAULT);
+      if (heading.intersectionRatio === 1) {
+        $topbarTitle.text(defaultTitleText);
       }
     }
-  });
+  }, options);
 
-  /* Click title remove hover effect. */
-  topbarTitle.click(function() {
+  observer.observe(document.querySelector(titleSelector));
+
+  /* Click title will scroll to top */
+  $topbarTitle.click(function() {
     $("body,html").animate({scrollTop: 0}, 800);
   });
 

_javascript/copyright

@@ -1,5 +1,5 @@
 /*!
- * Chirpy v4.0.1 (https://github.com/cotes2020/jekyll-theme-chirpy/)
+ * Chirpy v5.2.0 (https://github.com/cotes2020/jekyll-theme-chirpy/)
  * © 2019 Cotes Chung
  * MIT Licensed
  */

_javascript/utils/clipboard.js

@@ -0,0 +1,133 @@
+/*
+ * Clipboard functions
+ *
+ * Dependencies:
+ *   - popper.js (https://github.com/popperjs/popper-core)
+ *   - clipboard.js (https://github.com/zenorocha/clipboard.js)
+ */
+
+$(function() {
+  const btnSelector = '.code-header>button';
+  const ICON_SUCCESS = 'fas fa-check';
+  const ATTR_TIMEOUT = 'timeout';
+  const ATTR_TITLE_SUCCEED = 'data-title-succeed';
+  const ATTR_TITLE_ORIGIN = 'data-original-title';
+  const TIMEOUT = 2000; // in milliseconds
+
+  function isLocked(node) {
+    if ($(node)[0].hasAttribute(ATTR_TIMEOUT)) {
+      let timeout = $(node).attr(ATTR_TIMEOUT);
+      if (Number(timeout) > Date.now()) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  function lock(node) {
+    $(node).attr(ATTR_TIMEOUT, Date.now() + TIMEOUT);
+  }
+
+  function unlock(node) {
+    $(node).removeAttr(ATTR_TIMEOUT);
+  }
+
+  /* --- Copy code block --- */
+
+  // Initial the clipboard.js object
+  const clipboard = new ClipboardJS(btnSelector, {
+    target(trigger) {
+      let codeBlock = trigger.parentNode.nextElementSibling;
+      return codeBlock.querySelector('code .rouge-code');
+    }
+  });
+
+  $(btnSelector).tooltip({
+    trigger: 'hover',
+    placement: 'left'
+  });
+
+  function getIcon(btn) {
+    let iconNode = $(btn).children();
+    return iconNode.attr('class');
+  }
+
+  const ICON_DEFAULT = getIcon(btnSelector);
+
+  function showTooltip(btn) {
+    const succeedTitle = $(btn).attr(ATTR_TITLE_SUCCEED);
+    $(btn).attr(ATTR_TITLE_ORIGIN, succeedTitle).tooltip('show');
+  }
+
+  function hideTooltip(btn) {
+    $(btn).tooltip('hide').removeAttr(ATTR_TITLE_ORIGIN);
+  }
+
+  function setSuccessIcon(btn) {
+    let btnNode = $(btn);
+    let iconNode = btnNode.children();
+    iconNode.attr('class', ICON_SUCCESS);
+  }
+
+  function resumeIcon(btn) {
+    let btnNode = $(btn);
+    let iconNode = btnNode.children();
+    iconNode.attr('class', ICON_DEFAULT);
+  }
+
+  clipboard.on('success', (e) => {
+    e.clearSelection();
+
+    const trigger = e.trigger;
+    if (isLocked(trigger)) {
+      return;
+    }
+
+    setSuccessIcon(trigger);
+    showTooltip(trigger);
+    lock(trigger);
+
+    setTimeout(() => {
+      hideTooltip(trigger);
+      resumeIcon(trigger);
+      unlock(trigger);
+    }, TIMEOUT);
+
+  });
+
+  /* --- Post link sharing --- */
+
+  $('#copy-link').click((e) => {
+
+    let target = $(e.target);
+
+    if (isLocked(target)) {
+      return;
+    }
+
+    // Copy URL to clipboard
+
+    const url = window.location.href;
+    const $temp = $("<input>");
+
+    $("body").append($temp);
+    $temp.val(url).select();
+    document.execCommand("copy");
+    $temp.remove();
+
+    // Switch tooltip title
+
+    const defaultTitle = target.attr(ATTR_TITLE_ORIGIN);
+    const succeedTitle = target.attr(ATTR_TITLE_SUCCEED);
+
+    target.attr(ATTR_TITLE_ORIGIN, succeedTitle).tooltip('show');
+    lock(target);
+
+    setTimeout(() => {
+      target.attr(ATTR_TITLE_ORIGIN, defaultTitle);
+      unlock(target);
+    }, TIMEOUT);
+
+  });
+
+});

_javascript/utils/copy-link.js

@@ -1,18 +0,0 @@
-/*
- * Copy current page url to clipboard.
- */
-
-function copyLink(url) {
-  if (!url || 0 === url.length) {
-    url = window.location.href;
-  }
-
-  const $temp = $("<input>");
-  $("body").append($temp);
-  $temp.val(url).select();
-  document.execCommand("copy");
-  $temp.remove();
-
-  alert("Link copied successfully!");
-
-}

_javascript/utils/img-extra.js

@@ -11,10 +11,10 @@ $(function() {
     return;
   }
 
-  /* lozy loading */
+  /* lazy loading */
 
-  const imgs = document.querySelectorAll(`${IMG_SCOPE} img[data-src]`);
-  const observer = lozad(imgs);
+  const imgList = document.querySelectorAll(`${IMG_SCOPE} img[data-src]`);
+  const observer = lozad(imgList);
   observer.observe();
 
   /* popup */
@@ -40,9 +40,8 @@ $(function() {
     }
   });
 
-
   /* markup the image links */
-  $(`${IMG_SCOPE} a`).has("img").addClass('img-link');
+
+  $(`${IMG_SCOPE} a`).has('img').addClass('img-link');
 
 });
-

_javascript/utils/lang-badge.js

@@ -1,20 +0,0 @@
-/**
- *  Add language indicator to code snippets
- */
-
-$(function() {
-  const prefix = "language-";
-  const regex = new RegExp(`^${prefix}([a-z])+$`);
-
-  $(`div[class^=${prefix}`).each(function() {
-    let classes = $(this).attr("class").split(" ");
-
-    classes.forEach((_class) => {
-      if (regex.test(_class)) {
-        let lang = _class.substring(prefix.length);
-        $(this).attr("lang", `${lang}`);
-      }
-    });
-
-  });
-});

_javascript/utils/locale-datetime.js

@@ -0,0 +1,45 @@
+/**
+ * Update month/day to locale datetime
+ *
+ * Requirement: <https://github.com/iamkun/dayjs>
+ */
+
+/* A tool for locale datetime */
+const LocaleHelper = (function () {
+  const $preferLocale = $('meta[name="prefer-datetime-locale"]');
+  const locale = $preferLocale.length > 0 ?
+      $preferLocale.attr('content').toLowerCase() : $('html').attr('lang').substr(0, 2);
+  const attrTimestamp = 'data-ts';
+  const attrDateFormat = 'data-df';
+
+  return {
+    locale: () => locale,
+    attrTimestamp: () => attrTimestamp,
+    attrDateFormat: () => attrDateFormat,
+    getTimestamp: ($elem) => Number($elem.attr(attrTimestamp)),  // unix timestamp
+    getDateFormat: ($elem) => $elem.attr(attrDateFormat)
+  };
+
+}());
+
+$(function() {
+  dayjs.locale(LocaleHelper.locale());
+  dayjs.extend(window.dayjs_plugin_localizedFormat);
+
+  $(`[${LocaleHelper.attrTimestamp()}]`).each(function () {
+    const date = dayjs.unix(LocaleHelper.getTimestamp($(this)));
+    const text = date.format(LocaleHelper.getDateFormat($(this)));
+    $(this).text(text);
+    $(this).removeAttr(LocaleHelper.attrTimestamp());
+    $(this).removeAttr(LocaleHelper.attrDateFormat());
+
+    // setup tooltips
+    const tooltip = $(this).attr('data-toggle');
+    if (typeof tooltip === 'undefined' || tooltip !== 'tooltip') {
+      return;
+    }
+
+    const tooltipText = date.format('llll'); // see: https://day.js.org/docs/en/display/format#list-of-localized-formats
+    $(this).attr('data-original-title', tooltipText);
+  });
+});

_javascript/utils/smooth-scroll.js

@@ -8,74 +8,89 @@
 */
 
 $(function() {
+  const $topbarTitle = $("#topbar-title");
+  const REM = 16; // in pixels
+  const ATTR_SCROLL_FOCUS = "scroll-focus";
+
   $("a[href*='#']")
     .not("[href='#']")
     .not("[href='#0']")
     .click(function(event) {
+      if (this.pathname.replace(/^\//, "") !==
+            location.pathname.replace(/^\//, "")) {
+        return;
+      }
 
-      if (this.pathname.replace(/^\//, "") === location.pathname.replace(/^\//, "")) {
-        if (location.hostname === this.hostname) {
+      if (location.hostname !== this.hostname) {
+        return;
+      }
 
-          const REM = 16; /* 16px */
+      const hash = decodeURI(this.hash);
+      let toFootnoteRef = RegExp(/^#fnref:/).test(hash);
+      let toFootnote = toFootnoteRef ? false : RegExp(/^#fn:/).test(hash);
+      let selector = hash.includes(":") ? hash.replace(/\:/g, "\\:") : hash;
+      let $target = $(selector);
 
-          const hash = decodeURI(this.hash);
-          let isFnRef = RegExp(/^#fnref:/).test(hash);
-          let isFn = RegExp(/^#fn:/).test(hash);
-          let selector = hash.includes(":") ? hash.replace(/\:/, "\\:") : hash;
-          let target = $(selector);
+      let isMobileViews = $topbarTitle.is(":visible");
+      let isPortrait = $(window).width() < $(window).height();
 
-          if (target.length) {
-            event.preventDefault();
+      if (typeof $target === "undefined") {
+        return;
+      }
 
-            if (history.pushState) { /* add hash to URL */
-              history.pushState(null, null, hash);
-            }
+      event.preventDefault();
 
-            let curOffset = $(this).offset().top;
-            let destOffset = target.offset().top;
-            const scrollUp = (destOffset < curOffset);
-            const topbarHeight = $("#topbar-wrapper").outerHeight();
+      if (history.pushState) { /* add hash to URL */
+        history.pushState(null, null, hash);
+      }
 
-            if (scrollUp && isFnRef) {
-              /* Avoid the top-bar covering `fnref` when scrolling up
-                because `fnref` has no `%anchor`(see: module.scss) style. */
-              destOffset -= (topbarHeight + REM / 2);
-            }
+      let curOffset = $(window).scrollTop();
+      let destOffset = $target.offset().top -= REM / 2;
 
-            $("html,body").animate({
-              scrollTop: destOffset
-            }, 800, () => {
+      if (destOffset < curOffset) { // scroll up
+        ScrollHelper.hideTopbar();
+        ScrollHelper.addScrollUpTask();
 
-              const $target = $(target);
-              $target.focus();
+        if (isMobileViews && isPortrait) {
+          destOffset -= ScrollHelper.getTopbarHeight();
+        }
 
-              const SCROLL_MARK = "scroll-focus";
-
-              /* clean up old scroll mark */
-              if ($(`[${SCROLL_MARK}=true]`).length) {
-                $(`[${SCROLL_MARK}=true]`).attr(SCROLL_MARK, false);
-              }
-
-              /* Clean :target links */
-              if ($(":target").length) { /* element that visited by the URL with hash */
-                $(":target").attr(SCROLL_MARK, false);
-              }
-
-              /* set scroll mark to footnotes */
-              if (isFn || isFnRef) {
-                $target.attr(SCROLL_MARK, true);
-              }
-
-              if ($target.is(":focus")) { /* Checking if the target was focused */
-                return false;
-              } else {
-                $target.attr("tabindex", "-1"); /* Adding tabindex for elements not focusable */
-                $target.focus(); /* Set focus again */
-              }
-            });
-          }
+      } else { // scroll down
+        if (isMobileViews && isPortrait) {
+          destOffset -= ScrollHelper.getTopbarHeight();
         }
       }
 
+      $("html").animate({
+        scrollTop: destOffset
+      }, 500, () => {
+        $target.focus();
+
+        /* clean up old scroll mark */
+        if ($(`[${ATTR_SCROLL_FOCUS}=true]`).length) {
+          $(`[${ATTR_SCROLL_FOCUS}=true]`).attr(ATTR_SCROLL_FOCUS, false);
+        }
+
+        /* Clean :target links */
+        if ($(":target").length) { /* element that visited by the URL with hash */
+          $(":target").attr(ATTR_SCROLL_FOCUS, false);
+        }
+
+        /* set scroll mark to footnotes */
+        if (toFootnote || toFootnoteRef) {
+          $target.attr(ATTR_SCROLL_FOCUS, true);
+        }
+
+        if ($target.is(":focus")) { /* Checking if the target was focused */
+          return false;
+        } else {
+          $target.attr("tabindex", "-1"); /* Adding tabindex for elements not focusable */
+          $target.focus(); /* Set focus again */
+        }
+
+        if (ScrollHelper.hasScrollUpTask()) {
+          ScrollHelper.popScrollUpTask();
+        }
+      });
     }); /* click() */
 });

_javascript/utils/timeago.js

@@ -1,80 +0,0 @@
-/*
- * Calculate the Timeago
- */
-
-$(function() {
-
-  const timeagoElem = $(".timeago");
-
-  let toRefresh = timeagoElem.length;
-
-  let intervalId = void 0;
-
-  function timeago(iso, preposition) {
-    let now = new Date();
-    let past = new Date(iso);
-    let prep = (typeof preposition !== "undefined" ? `${preposition} ` : "");
-
-    if (past.getFullYear() !== now.getFullYear()) {
-      toRefresh -= 1;
-      return prep + past.toLocaleString("en-US", {
-        year: "numeric",
-        month: "short",
-        day: "numeric"
-      });
-    }
-
-    if (past.getMonth() !== now.getMonth()) {
-      toRefresh -= 1;
-      return prep + past.toLocaleString("en-US", {
-        month: "short",
-        day: "numeric"
-      });
-    }
-
-    let seconds = Math.floor((now - past) / 1000);
-
-    let day = Math.floor(seconds / 86400);
-    if (day >= 1) {
-      toRefresh -= 1;
-      return day + " day" + (day > 1 ? "s" : "") + " ago";
-    }
-
-    let hour = Math.floor(seconds / 3600);
-    if (hour >= 1) {
-      return hour + " hour" + (hour > 1 ? "s" : "") + " ago";
-    }
-
-    let minute = Math.floor(seconds / 60);
-    if (minute >= 1) {
-      return minute + " minute" + (minute > 1 ? "s" : "") + " ago";
-    }
-
-    return "just now";
-  }
-
-  function updateTimeago() {
-    $(".timeago").each(function() {
-      if ($(this).children("i").length > 0) {
-        let node = $(this).children("i");
-        let date = node.text(); /* ISO Date: "YYYY-MM-DDTHH:MM:SSZ" */
-        $(this).text(timeago(date, $(this).attr("prep")));
-        $(this).append(node);
-      }
-    });
-
-    if (toRefresh === 0 && typeof intervalId !== "undefined") {
-      clearInterval(intervalId); /* stop interval */
-    }
-    return toRefresh;
-  }
-
-  if (toRefresh === 0) {
-    return;
-  }
-
-  if (updateTimeago() > 0) { /* run immediately */
-    intervalId = setInterval(updateTimeago, 60000); /* run every minute */
-  }
-
-});

_layouts/archives.html

@@ -3,6 +3,15 @@ layout: page
 # The Archives of posts.
 ---
 
+{% include lang.html %}
+
+{% if site.prefer_datetime_locale == 'en' or lang == 'en' %}
+  {% assign df_strftime_m = '%b' %}
+  {% assign df_dayjs_m = 'MMM' %}
+{% else %}
+  {% assign df_strftime_m = '/ %m' %}
+  {% assign df_dayjs_m = '/ MM' %}
+{% endif %}
 
 <div id="archives" class="pl-xl-2">
 {% for post in site.posts %}
@@ -16,10 +25,13 @@ layout: page
   {% endif %}
     <li>
       <div>
-        {% capture this_day %}{{ post.date | date: "%d" }}{% endcapture %}
-        {% capture this_month %}{{ post.date | date: "%b" }}{% endcapture %}
-        <span class="date day">{{ this_day }}</span>
-        <span class="date month small text-muted">{{ this_month }}</span>
+        {% assign ts = post.date | date: '%s' %}
+        <span class="date day" data-ts="{{ ts }}" data-df="DD">
+          {{ post.date | date: "%d" }}
+        </span>
+        <span class="date month small text-muted" data-ts="{{ ts }}" data-df="{{ df_dayjs_m }}">
+          {{ post.date | date: df_strftime_m }}
+        </span>
         <a href="{{ post.url | relative_url }}">{{ post.title }}</a>
       </div>
     </li>

_layouts/categories.html

@@ -3,6 +3,7 @@ layout: page
 # All the Categories of posts
 ---
 
+{% include lang.html %}
 
 {% assign HEAD_PREFIX = "h_" %}
 {% assign LIST_PREFIX = "l_" %}
@@ -33,28 +34,37 @@ layout: page
 
   <div class="card categories">
     <!-- top-category -->
-    <div class="card-header d-flex justify-content-between hide-border-bottom"
-        id="{{ HEAD_PREFIX }}{{ group_index }}">
+    <div id="{{ HEAD_PREFIX }}{{ group_index }}"
+      class="card-header d-flex justify-content-between hide-border-bottom">
       <span>
-      {% if sub_categories_size > 0 %}
-        <i class="far fa-folder-open fa-fw"></i>
-      {% else %}
-        <i class="far fa-folder fa-fw"></i>
-      {% endif %}
-        <a href="{{ site.baseurl }}/categories/{{ category_name | slugify | url_encode }}/"
-          class="ml-1 mr-2">
-          {{ category_name }}
-        </a>
+        <i class="far fa-folder{% if sub_categories_size > 0 %}-open{% endif %} fa-fw"></i>
+
+        {% capture _category_url %}/categories/{{ category_name | slugify | url_encode }}/{% endcapture %}
+        <a href="{{ _category_url | relative_url }}" class="ml-1 mr-2">{{ category_name }}</a>
 
         <!-- content count -->
         {% assign top_posts_size = site.categories[category_name] | size %}
         <span class="text-muted small font-weight-light">
           {% if sub_categories_size > 0 %}
             {{ sub_categories_size }}
-            {% if sub_categories_size > 1 %}categories{% else %}category{% endif %},
+            {% if sub_categories_size > 1 %}
+              {{ site.data.locales[lang].categories.category_measure.plural
+                | default: site.data.locales[lang].categories.category_measure }}
+            {% else %}
+              {{ site.data.locales[lang].categories.category_measure.singular
+                | default: site.data.locales[lang].categories.category_measure }}
+            {% endif %},
+          {% endif %}
+
+          {{ top_posts_size }}
+
+          {% if top_posts_size > 1 %}
+            {{ site.data.locales[lang].categories.post_measure.plural
+              | default: site.data.locales[lang].categories.post_measure }}
+          {% else %}
+            {{ site.data.locales[lang].categories.post_measure.singular
+              | default: site.data.locales[lang].categories.post_measure }}
           {% endif %}
-            {{ top_posts_size }}
-            post{% if top_posts_size > 1 %}s{% endif %}
         </span>
       </span>
 
@@ -80,11 +90,21 @@ layout: page
         {% for sub_category in sub_categories %}
         <li class="list-group-item">
           <i class="far fa-folder fa-fw"></i>
-          <a href="{{ site.baseurl }}/categories/{{ sub_category | slugify | url_encode }}/"
-            class="ml-1 mr-2">{{ sub_category }}</a>
+
+          {% capture _sub_ctg_url %}/categories/{{ sub_category | slugify | url_encode }}/{% endcapture %}
+          <a href="{{ _sub_ctg_url | relative_url }}" class="ml-1 mr-2">{{ sub_category }}</a>
+
           {% assign posts_size = site.categories[sub_category] | size %}
-          <span class="text-muted small font-weight-light">{{ posts_size }}
-            post{% if posts_size > 1 %}s{% endif %}
+          <span class="text-muted small font-weight-light">
+            {{ posts_size }}
+
+            {% if posts_size > 1 %}
+              {{ site.data.locales[lang].categories.post_measure.plural
+                | default: site.data.locales[lang].categories.post_measure }}
+            {% else %}
+              {{ site.data.locales[lang].categories.post_measure.singular
+                | default: site.data.locales[lang].categories.post_measure }}
+            {% endif %}
           </span>
         </li>
         {% endfor %}

_layouts/category.html

@@ -3,6 +3,8 @@ layout: page
 # The Category layout
 ---
 
+{% include lang.html %}
+
 <div id="page-category">
   <h1 class="pl-lg-2">
     <i class="far fa-folder-open fa-fw text-muted"></i>
@@ -11,13 +13,11 @@ layout: page
   </h1>
 
   <ul class="post-content pl-0">
-    {% assign post_long_df = site.data.date_format.post.long | default: '%b %e, %Y' %}
-
     {% for post in page.posts %}
     <li class="d-flex justify-content-between pl-md-3 pr-md-3">
       <a href="{{ post.url | relative_url }}">{{ post.title }}</a>
       <span class="dash flex-grow-1"></span>
-      <span class="text-muted small">{{ post.date | date: post_long_df }}</span>
+      {% include datetime.html date=post.date wrap='span' class='text-muted small' %}
     </li>
     {% endfor %}
   </ul>

_layouts/default.html

@@ -5,26 +5,30 @@ layout: compress
 
 <!DOCTYPE html>
 
+{% include lang.html %}
+
+{% include assets-origin.html %}
+
 {% capture prefer_mode %}
   {% if site.theme_mode %}
-    mode="{{ site.theme_mode }}"
+    data-mode="{{ site.theme_mode }}"
   {% endif %}
 {% endcapture %}
 
-<html lang="{{ site.lang | default: "en-US" }}" {{ prefer_mode }}>
+<html lang="{{ site.lang }}"{{ prefer_mode }}>
 
   {% include head.html %}
 
-  <body data-spy="scroll" data-target="#toc">
+  <body data-spy="scroll" data-target="#toc" data-topbar-visible="true">
 
     {% include sidebar.html %}
 
     {% include topbar.html %}
 
-    <div id="main-wrapper">
-      <div id="main">
+    <div id="main-wrapper" class="d-flex justify-content-center">
+      <div id="main" class="container pl-xl-4 pr-xl-4">
 
-        {% include refactor-content.html content=content %}
+        {{ content }}
 
         {% include footer.html %}
 
@@ -44,8 +48,27 @@ layout: compress
       <i class="fas fa-angle-up"></i>
     </a>
 
+    {% if site.pwa.enabled %}
+      <div id="notification" class="toast" role="alert" aria-live="assertive" aria-atomic="true"
+        data-animation="true" data-autohide="false">
+        <div class="toast-header">
+          <button type="button" class="ml-2 ml-auto close" data-dismiss="toast" aria-label="Close">
+            <span aria-hidden="true">&times;</span>
+          </button>
+        </div>
+        <div class="toast-body text-center pt-0">
+          <p class="pl-2 pr-2 mb-3">{{ site.data.locales[lang].notification.update_found }}</p>
+          <button type="button" class="btn btn-primary" aria-label="Update">
+            {{ site.data.locales[lang].notification.update }}
+          </button>
+        </div>
+      </div>
+    {% endif %}
+
     {% include search-loader.html %}
 
+    {% include js-selector.html %}
+
   </body>
 
 </html>

_layouts/home.html

@@ -3,9 +3,11 @@ layout: page
 # The Home page layout
 ---
 
+{% include lang.html %}
+
+{% assign pinned = site.posts | where: "pin", "true" %}
+{% assign default = site.posts | where_exp: "item", "item.pin != true and item.hidden != true" %}
 
-{% assign pinned = site.posts | where_exp: "item", "item.pin == true"  %}
-{% assign default = site.posts | where_exp: "item", "item.pin != true"  %}
 {% assign posts = "" | split: "" %}
 
 <!-- Get pinned posts -->
@@ -21,7 +23,6 @@ layout: page
   {% assign pinned_num = 0 %}
 {% endif %}
 
-
 <!-- Get default posts -->
 
 {% assign default_beg = offset | minus: pinned.size %}
@@ -39,7 +40,6 @@ layout: page
   {% endfor %}
 {% endif %}
 
-
 <div id="post-list">
 
 {% for post in posts %}
@@ -52,34 +52,34 @@ layout: page
     <div class="post-content">
       <p>
         {% include no-linenos.html content=post.content %}
-        {{ content | markdownify | strip_html | truncate: 200 }}
+        {{ content | markdownify | strip_html | truncate: 200 | escape }}
       </p>
     </div>
 
-    <div class="post-meta text-muted d-flex justify-content-between">
+    <div class="post-meta text-muted d-flex">
+      <div class="mr-auto">
 
-      <div>
         <!-- posted date -->
         <i class="far fa-calendar fa-fw"></i>
-        {% include timeago.html date=post.date tooltip=true %}
+        {% include datetime.html date=post.date %}
 
-        <!-- time to read -->
-        <i class="far fa-clock fa-fw"></i>
-        {% include read-time.html content=post.content %}
-
-        <!-- page views -->
-        {% if site.google_analytics.pv.proxy_endpoint or site.google_analytics.pv.cache_path %}
-        <i class="far fa-eye fa-fw"></i>
-        <span id="pv_{{-post.title-}}" class="pageviews">
-          <i class="fas fa-spinner fa-spin fa-fw"></i>
-        </span>
+        <!-- categories -->
+        {% if post.categories.size > 0 %}
+          <i class="far fa-folder-open fa-fw"></i>
+          <span>
+          {% for category in post.categories %}
+            {{ category }}
+            {%- unless forloop.last -%},{%- endunless -%}
+          {% endfor %}
+          </span>
         {% endif %}
+
       </div>
 
       {% if post.pin %}
       <div class="pin">
         <i class="fas fa-thumbtack fa-fw"></i>
-        <span>{{ site.data.label.pin_prompt | default: 'Pinned' }}</span>
+        <span>{{ site.data.locales[lang].post.pin_prompt }}</span>
       </div>
       {% endif %}
 

_layouts/page.html

@@ -1,34 +1,64 @@
 ---
 layout: default
-# The page layout
 ---
 
+{% include lang.html %}
+
+{% include assets-origin.html %}
+
 <div class="row">
-  <div class="col-12 col-lg-11 col-xl-8">
-    <div id="page" class="post pb-5 pl-1 pr-1 pl-sm-2 pr-sm-2 pl-md-4 pr-md-4 mb-md-4">
-    {% if page.dynamic_title %}
-      <h1 class="dynamic-title">{{ page.title }}</h1>
-      <div class="post-content">
+
+  <!-- core -->
+  <div id="core-wrapper" class="col-12 col-lg-11 col-xl-9 pr-xl-4">
+    <div class="post pl-1 pr-1 pl-md-2 pr-md-2">
+
+    {% capture _content %}
+      {% if layout.refactor or page.layout == 'page' %}
+        {% include refactor-content.html content=content %}
+      {% else %}
         {{ content }}
+      {% endif %}
+    {% endcapture %}
+
+    {% if page.layout == 'page' or page.collection == 'tabs'%}
+      {% assign title = site.data.locales[lang].tabs[tab_key] | default: page.title %}
+      <h1 class="dynamic-title">
+        {{ title }}
+      </h1>
+      <div class="post-content">
+        {{ _content }}
       </div>
     {% else %}
-      {{ content }}
+      {{ _content }}
     {% endif %}
-    </div> <!-- #page -->
-  </div><!-- .col-12 -->
 
-  {% include panel.html %}
+    </div>
+  </div> <!-- #core-wrapper -->
+
+  <!-- pannel -->
+  <div id="panel-wrapper" class="col-xl-3 pl-2 text-muted">
+
+    <div class="access">
+      {% include update-list.html %}
+      {% include trending-tags.html %}
+    </div>
+
+    {% for _include in layout.pannel_includes %}
+      {% assign _include_path = _include | append: '.html' %}
+      {% include {{ _include_path }} %}
+    {% endfor %}
+  </div>
 
 </div>
 
-{% if site.disqus.comments and page.comments %}
+<!-- tail -->
+{% if layout.tail_includes %}
 <div class="row">
-  <div class="col-12 col-lg-11 col-xl-8">
-    <div class="pl-1 pr-1 pl-sm-2 pr-sm-2 pl-md-4 pr-md-4">
-
-    {% include disqus.html %}
-
-    </div> <!-- .pl-1 pr-1 -->
-  </div> <!-- .col-12 -->
-</div> <!-- .row -->
+  <div id="tail-wrapper" class="col-12 col-lg-11 col-xl-9 pl-3 pr-3 pr-xl-4">
+    {% for _include in layout.tail_includes %}
+      {% assign _include_path = _include | append: '.html' %}
+      {% include {{ _include_path }} %}
+    {% endfor %}
+  </div>
+</div>
 {% endif %}

_layouts/post.html

@@ -1,129 +1,152 @@
 ---
-layout: default
-# The posts' layout
+layout: page
+refactor: true
+pannel_includes:
+  - toc
+tail_includes:
+  - related-posts
+  - post-nav
+  - comments
 ---
 
-<div class="row">
+{% include lang.html %}
 
-  <div id="post-wrapper" class="col-12 col-lg-11 col-xl-8">
+<h1 data-toc-skip>{{ page.title }}</h1>
 
-    <div class="post pl-1 pr-1 pl-sm-2 pr-sm-2 pl-md-4 pr-md-4">
+<div class="post-meta text-muted">
+    <!-- published date -->
+    <span>
+      {{ site.data.locales[lang].post.posted }}
+      {% include datetime.html date=page.date tooltip=true %}
+    </span>
 
-      <h1 data-toc-skip>{{ page.title }}</h1>
-
-      <div class="post-meta text-muted d-flex flex-column">
-        <!-- Published date and author -->
-        <div>
-          <span class="semi-bold">
-            {{ page.author | default: site.social.name }}
-          </span>
-          {% include timeago.html date=page.date prep="on" tooltip=true %}
-        </div>
-
-        <div>
-          <!-- lastmod -->
-          {% if page.last_modified_at %}
-          <span>
-            {% include timeago.html date=page.last_modified_at
-              class="lastmod" prefix="Updated" tooltip=true %}
-          </span>
-          {% endif %}
-
-          <!-- read time -->
-          {% include read-time.html content=content %}
-
-          <!-- page views -->
-          {% if site.google_analytics.pv.proxy_endpoint or site.google_analytics.pv.cache_path %}
-          <span id="pv" class="pageviews"><i class="fas fa-spinner fa-spin fa-fw"></i></span>
-          {% endif %}
-
-        </div>
-
-      </div> <!-- .post-meta -->
-
-      <div class="post-content">
-
-        {% if page.image.src %}
-          <img src="{{ page.image.src }}" class="preview-img" alt="{{ page.image.alt | default: "Preview Image" }}">
-        {% endif %}
-
-        {{ content }}
-
-      </div>
-
-      <div class="post-tail-wrapper text-muted">
-
-        <!-- categories -->
-        {% if page.categories.size > 0 %}
-        <div class="post-meta mb-3">
-          <i class="far fa-folder-open fa-fw mr-1"></i>
-          {% for category in page.categories %}
-            <a href='{{ site.baseurl }}/categories/{{ category | slugify | url_encode }}/'>{{ category }}</a>
-            {%- unless forloop.last -%}, {%- endunless -%}
-          {% endfor %}
-        </div>
-        {% endif %}
-
-        <!-- tags -->
-        {% if page.tags.size > 0 %}
-        <div class="post-tags">
-          <i class="fa fa-tags fa-fw mr-1"></i>
-          {% for tag in page.tags %}
-          <a href="{{ site.baseurl }}/tags/{{ tag | slugify | url_encode }}/"
-            class="post-tag no-text-decoration" >
-            {{- tag -}}
-          </a>
-          {% endfor %}
-          </div>
-        {% endif %}
-
-        <div class="post-tail-bottom
-          d-flex justify-content-between align-items-center mt-3 pt-5 pb-2">
-          {% if site.data.rights.license %}
-          <div class="license-wrapper">
-            This post is licensed under
-            <a href="{{ site.data.rights.license.link }}">{{ site.data.rights.license.name }}</a>
-            by the author.
-          </div>
-          {% endif %}
-
-          {% include post-sharing.html %}
-
-        </div><!-- .post-tail-bottom -->
-
-      </div><!-- div.post-tail -->
-
-    </div> <!-- .post -->
-
-
-  </div> <!-- #post-wrapper -->
-
-  {% assign enable_toc = false %}
-
-  {% if site.toc and page.toc %}
-    {% if content contains '<h2' or content contains '<h3' %}
-      {% assign enable_toc = true %}
+    <!-- lastmod date -->
+    {% if page.last_modified_at %}
+    <span>
+      {{ site.data.locales[lang].post.updated }}
+      {% include datetime.html date=page.last_modified_at tooltip=true %}
+    </span>
     {% endif %}
+
+  {% if page.image.path %}
+    {% capture bg %}
+      {% unless page.image.no_bg %}{{ 'bg' }}{% endunless %}
+    {% endcapture %}
+
+    <div class="mt-3 mb-3">
+      <img src="{{ page.image.path }}" class="preview-img {{ bg | strip }}"
+        alt="{{ page.image.alt | default: "Preview Image" }}"
+
+      {% if page.image.width %}
+        width="{{ page.image.width }}"
+      {% elsif page.image.w %}
+        width="{{ page.image.w }}"
+      {% endif %}
+
+      {% if page.image.height %}
+        height="{{ page.image.height }}"
+      {% elsif page.image.h %}
+        height="{{ page.image.h }}"
+      {% endif %}>
+
+      {% if page.image.alt %}
+        <figcaption class="pt-2 pb-2">{{ page.image.alt }}</figcaption>
+      {% endif %}
+
+    </div>
   {% endif %}
 
-  {% include panel.html toc=enable_toc %}
+  <div class="d-flex justify-content-between">
+    <!-- author -->
+    <span>
+      {% capture author_name %}{{ site.data.authors[page.author].name | default: site.social.name }}{% endcapture %}
+      {% assign author_link = nil %}
 
-</div> <!-- .row -->
+      {% if page.author %}
+        {% assign author_link = site.data.authors[page.author].url %}
+      {% elsif author_name == site.social.name %}
+        {% assign author_link = site.social.links[0] %}
+      {% endif %}
 
-<div class="row">
-  <div class="col-12 col-lg-11 col-xl-8">
-    <div id="post-extend-wrapper" class="pl-1 pr-1 pl-sm-2 pr-sm-2 pl-md-4 pr-md-4">
+      {{ site.data.locales[lang].post.written_by }}
 
-    {% include related-posts.html %}
+      <em>
+        {% if author_link %}
+          <a href="{{ author_link }}">{{ author_name }}</a>
+        {% else %}
+        {{ author_name }}
+        {% endif %}
+      </em>
+    </span>
 
-    {% include post-nav.html %}
+    <div>
+      <!-- page views -->
+      {% if site.google_analytics.pv.proxy_endpoint or site.google_analytics.pv.cache_path %}
+      <span>
+        <em id="pv" class="pageviews">
+          <i class="fas fa-spinner fa-spin fa-fw"></i>
+        </em>
+        {{ site.data.locales[lang].post.pageview_measure }}
+      </span>
+      {% endif %}
 
-    {% if site.disqus.comments and page.comments %}
-      {% include disqus.html %}
-    {% endif %}
+      <!-- read time -->
+      {% include read-time.html content=content prompt=true %}
+    </div>
 
-    </div> <!-- #post-extend-wrapper -->
+  </div> <!-- .d-flex -->
 
-  </div> <!-- .col-* -->
+</div> <!-- .post-meta -->
 
-</div> <!-- .row -->
+<div class="post-content">
+  {{ content }}
+</div>
+
+<div class="post-tail-wrapper text-muted">
+
+  <!-- categories -->
+  {% if page.categories.size > 0 %}
+  <div class="post-meta mb-3">
+    <i class="far fa-folder-open fa-fw mr-1"></i>
+    {% for category in page.categories %}
+      <a href='{{ site.baseurl }}/categories/{{ category | slugify | url_encode }}/'>{{ category }}</a>
+      {%- unless forloop.last -%}, {%- endunless -%}
+    {% endfor %}
+  </div>
+  {% endif %}
+
+  <!-- tags -->
+  {% if page.tags.size > 0 %}
+  <div class="post-tags">
+    <i class="fa fa-tags fa-fw mr-1"></i>
+      {% for tag in page.tags %}
+      <a href="{{ site.baseurl }}/tags/{{ tag | slugify | url_encode }}/"
+          class="post-tag no-text-decoration" >
+        {{- tag -}}
+      </a>
+      {% endfor %}
+  </div>
+  {% endif %}
+
+  <div class="post-tail-bottom
+    d-flex justify-content-between align-items-center mt-3 pt-5 pb-2">
+    <div class="license-wrapper">
+
+      {% if site.data.locales[lang].copyright.license.template %}
+
+        {% capture _replacement %}
+        <a href="{{ site.data.locales[lang].copyright.license.link }}">
+          {{ site.data.locales[lang].copyright.license.name }}
+        </a>
+        {% endcapture %}
+
+        {{ site.data.locales[lang].copyright.license.template | replace: ':LICENSE_NAME', _replacement }}
+
+      {% endif %}
+    </div>
+
+    {% include post-sharing.html %}
+
+  </div><!-- .post-tail-bottom -->
+
+</div><!-- div.post-tail-wrapper -->

_layouts/tag.html

@@ -3,6 +3,7 @@ layout: page
 # The layout for Tag page
 ---
 
+{% include lang.html %}
 
 <div id="page-tag">
   <h1 class="pl-lg-2">
@@ -11,13 +12,11 @@ layout: page
     <span class="lead text-muted pl-2">{{ page.posts | size }}</span>
   </h1>
   <ul class="post-content pl-0">
-    {% assign post_long_df = site.data.date_format.post.long | default: '%b %e, %Y' %}
-
     {% for post in page.posts %}
     <li class="d-flex justify-content-between pl-md-3 pr-md-3">
       <a href="{{ post.url | relative_url }}">{{ post.title }}</a>
       <span class="dash flex-grow-1"></span>
-      <span class="text-muted small">{{ post.date | date: post_long_df }}</span>
+      {% include datetime.html date=post.date wrap='span' class='text-muted small' %}
     </li>
     {% endfor %}
   </ul>

_layouts/tags.html

@@ -14,7 +14,9 @@ layout: page
 
   {% for t in sorted_tags %}
     <div>
-      <a class="tag" href="{{ site.baseurl }}/tags/{{ t | slugify | url_encode }}/">{{ t }}<span class="text-muted">{{ site.tags[t].size }}</span></a>
+      <a class="tag" href="{{ t | slugify | url_encode | prepend: '/tags/' | append: '/' | relative_url }}">
+        {{ t }}<span class="text-muted">{{ site.tags[t].size }}</span>
+      </a>
     </div>
   {% endfor %}
 

_posts/2019-08-08-text-and-typography.md

@@ -1,13 +1,16 @@
 ---
 title: Text and Typography
-author: Cotes Chung
+author: cotes
 date: 2019-08-08 11:33:00 +0800
 categories: [Blogging, Demo]
 tags: [typography]
 math: true
 mermaid: true
 image:
-  src: https://cdn.jsdelivr.net/gh/cotes2020/chirpy-images/commons/devices-mockup.png
+  path: /commons/devices-mockup.png
+  width: 800
+  height: 500
+  alt: Responsive rendering of Chirpy theme on multiple devices.
 ---
 
 This post is to show Markdown syntax rendering on [**Chirpy**](https://github.com/cotes2020/jekyll-theme-chirpy/fork), you can also use it as an example of writing. Now, let's start looking at text and typography.
@@ -50,8 +53,8 @@ Fluttering and dancing in the breeze.
 ### Unordered list
 
 - Chapter
-	- Setcion
-      - Paragraph
+  - Section
+    - Paragraph
 
 ### Task list
 
@@ -70,10 +73,23 @@ Sun
 Moon
 : the natural satellite of the earth, visible by reflected light from the sun
 
-
 ## Block Quote
 
-> This line to shows the Block Quote.
+> This line shows the _block quote_.
+
+## Prompts
+
+> An example showing the `tip` type prompt.
+{: .prompt-tip }
+
+> An example showing the `info` type prompt.
+{: .prompt-info }
+
+> An example showing the `warning` type prompt.
+{: .prompt-warning }
+
+> An example showing the `danger` type prompt.
+{: .prompt-danger }
 
 ## Tables
 
@@ -87,49 +103,42 @@ Moon
 
 <http://127.0.0.1:4000>
 
-
 ## Footnote
 
 Click the hook will locate the footnote[^footnote], and here is another footnote[^fn-nth-2].
 
-
 ## Images
 
 - Default (with caption)
 
-![Desktop View](https://cdn.jsdelivr.net/gh/cotes2020/chirpy-images/posts/20190808/mockup.png)
+![Desktop View](/posts/20190808/mockup.png){: width="972" height="589" }
 _Full screen width and center alignment_
 
 <br>
 
-- Specify width
-
-![Desktop View](https://cdn.jsdelivr.net/gh/cotes2020/chirpy-images/posts/20190808/mockup.png){: width="400"}
-_400px image width_
-
 - Shadow
 
-![Shadow Avatar](https://cdn.jsdelivr.net/gh/cotes2020/chirpy-images/posts/20190808/window.png){: .shadow width="90%" }
+![Window shadow](/posts/20190808/window.png){: .shadow width="1548" height="864" style="max-width: 90%" }
 _shadow effect (visible in light mode)_
 
 <br>
 
 - Left aligned
 
-![Desktop View](https://cdn.jsdelivr.net/gh/cotes2020/chirpy-images/posts/20190808/mockup.png){: width="350" .normal}
+![Desktop View](/posts/20190808/mockup.png){: width="972" height="589" style="max-width: 70%" .normal}
 
 <br>
 
 - Float to left
 
-  ![Desktop View](https://cdn.jsdelivr.net/gh/cotes2020/chirpy-images/posts/20190808/mockup.png){: width="240" .left}
+  ![Desktop View](/posts/20190808/mockup.png){: width="972" height="589" style="max-width: 200px" .left}
   "A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space."
 
 <br>
 
 - Float to right
 
-  ![Desktop View](https://cdn.jsdelivr.net/gh/cotes2020/chirpy-images/posts/20190808/mockup.png){: width="240" .right}
+  ![Desktop View](/posts/20190808/mockup.png){: width="972" height="589" style="max-width: 200px" .right}
   "A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space."
 
 <br>
@@ -144,7 +153,6 @@ _shadow effect (visible in light mode)_
   cherry :active, c, after b a, 1d
 ```
 
-
 ## Mathematics
 
 The mathematics powered by [**MathJax**](https://www.mathjax.org/):
@@ -155,11 +163,13 @@ When $a \ne 0$, there are two solutions to $ax^2 + bx + c = 0$ and they are
 
 $$ x = {-b \pm \sqrt{b^2-4ac} \over 2a} $$
 
-
 ## Inline code
 
 This is an example of `Inline Code`.
 
+## Filepath
+
+Here is the `/path/to/the/file.extend`{: .filepath}.
 
 ## Code block
 
@@ -179,44 +189,23 @@ SHELL=/usr/local/bin/bash
 PYENV_SHELL=bash
 ```
 
-#### Ruby
-
-```ruby
-def sum_eq_n?(arr, n)
-  return true if arr.empty? && n == 0
-  arr.product(arr).reject { |a,b| a == b }.any? { |a,b| a + b == n }
-end
-```
-
 #### Shell
 
-```shell
+```bash
 if [ $? -ne 0 ]; then
     echo "The command was not successful.";
     #do the needful / exit
 fi;
 ```
 
-#### Liquid
+### Specific filename
 
-{% raw %}
-```liquid
-{% if product.title contains 'Pack' %}
-  This product's title contains the word Pack.
-{% endif %}
-```
-{% endraw %}
-
-#### Java
-
-```java
-private void writeObject(java.io.ObjectOutputStream s)
-  throws java.io.IOException {
-  // Write out any hidden serialization magic
-  s.defaultWriteObject();
-  for (E e: map.keySet()) s.writeObject(e);
-}
+```sass
+@import
+  "colors/light-typography",
+  "colors/dark-typography"
 ```
+{: file='_sass/jekyll-theme-chirpy.scss'}
 
 ## Reverse Footnote
 

_posts/2019-08-08-write-a-new-post.md

@@ -1,14 +1,17 @@
 ---
 title: Writing a New Post
-author: Cotes Chung
+author: cotes
 date: 2019-08-08 14:10:00 +0800
 categories: [Blogging, Tutorial]
 tags: [writing]
+render_with_liquid: false
 ---
 
+This post will guide you how to write a post on _Chirpy_ theme. Even if you have previous experience with Jekyll, this article is worth reading, because many features require specific variables to be set.
+
 ## Naming and Path
 
-Create a new file named `YYYY-MM-DD-TITLE.EXTENSION` and put it in the `_posts/` of the root directory. Please note that the `EXTENSION` must be one of `md` and `markdown`.
+Create a new file named `YYYY-MM-DD-TITLE.EXTENSION`{: .filepath} and put it in the `_posts`{: .filepath} of the root directory. Please note that the `EXTENSION`{: .filepath} must be one of `md`{: .filepath} and `markdown`{: .filepath}. If you want to save time of creating files, please consider using the plugin [`Jekyll-Compose`](https://github.com/jekyll/jekyll-compose) to accomplish this.
 
 ## Front Matter
 
@@ -23,24 +26,52 @@ tags: [TAG]     # TAG names should always be lowercase
 ---
 ```
 
-> **Note**: The posts' ***layout*** has been set to `post` by default, so there is no need to add the variable ***layout*** in Front Matter block.
+> The posts' _layout_ has been set to `post` by default, so there is no need to add the variable _layout_ in the Front Matter block.
+{: .prompt-tip }
 
-### Timezone of date
+### Timezone of Date
 
-In order to accurately record the release date of a post, you should not only setup the `timezone` of `_config.yml` but also provide the the post's timezone in field `date` of its Front Matter block. Format: `+/-TTTT`, e.g. `+0800`.
+In order to accurately record the release date of a post, you should not only set up the `timezone` of `_config.yml`{: .filepath} but also provide the post's timezone in variable `date` of its Front Matter block. Format: `+/-TTTT`, e.g. `+0800`.
 
 ### Categories and Tags
 
-The `categories` of each post is designed to contain up to two elements, and the number of elements in `tags` can be zero to infinity. For instance:
+The `categories` of each post are designed to contain up to two elements, and the number of elements in `tags` can be zero to infinity. For instance:
 
 ```yaml
+---
 categories: [Animal, Insect]
 tags: [bee]
+---
 ```
 
+### Author Information
+
+The author information of the post usually does not need to be filled in the _Front Matter_ , they will be obtained from variables `social.name` and the first entry of `social.links` of the configuration file by default. But you can also override it as follows:
+
+Add author information in `_data/authors.yml` (If your website doesn't have this file, don't hesitate to create one.)
+
+```yaml
+<author_id>:
+  name: <full name>
+  twitter: <twitter_of_author>
+  url: <homepage_of_author>
+```
+{: file="_data/authors.yml" }
+
+And then set up the custom author in the post's YAML block:
+
+```yaml
+---
+author: <author_id>
+---
+```
+
+> Another benefit of reading the author information from the file `_data/authors.yml`{: .filepath } is that the page will have the meta tag `twitter:creator`, which enriches the [Twitter Cards](https://developer.twitter.com/en/docs/twitter-for-websites/cards/guides/getting-started#card-and-content-attribution) and is good for SEO.
+{: .prompt-info }
+
 ## Table of Contents
 
-By default, the **T**able **o**f **C**ontents (TOC) is displayed on the right panel of the post. If you want to turn it off globally, go to `_config.yml` and set the value of variable `toc` to `false`. If you want to turn off TOC for specific post, add the following to post's [Front Matter](https://jekyllrb.com/docs/front-matter/):
+By default, the **T**able **o**f **C**ontents (TOC) is displayed on the right panel of the post. If you want to turn it off globally, go to `_config.yml`{: .filepath} and set the value of variable `toc` to `false`. If you want to turn off TOC for a specific post, add the following to the post's [Front Matter](https://jekyllrb.com/docs/front-matter/):
 
 ```yaml
 ---
@@ -50,7 +81,9 @@ toc: false
 
 ## Comments
 
-Similar to TOC, the [Disqus](https://disqus.com/) comments is loaded by default in each post, and the global switch is defined by variable `comments` in file `_config.yml` . If you want to close the comment for specific post, add the following to the **Front Matter** of the post:
+The global switch of comments is defined by variable `comments.active` in the file `_config.yml`{: .filepath}. After selecting a comment system for this variable, comments will be turned on for all posts.
+
+If you want to close the comment for a specific post, add the following to the **Front Matter** of the post:
 
 ```yaml
 ---
@@ -72,29 +105,17 @@ math: true
 
 [**Mermaid**](https://github.com/mermaid-js/mermaid) is a great diagrams generation tool. To enable it on your post, add the following to the YAML block:
 
-```yml
+```yaml
 ---
 mermaid: true
 ---
 ```
 
-Then you can use it like other markdown language: surround the graph code with ```` ```mermaid ```` and ```` ``` ````.
+Then you can use it like other markdown languages: surround the graph code with ```` ```mermaid ```` and ```` ``` ````.
 
 ## Images
 
-### Preview image
-
-If you want to add an image to the top of the post contents, specify the url and alt attribute for the image:
-
-```yaml
----
-image:
-  src: /path/to/image/file
-  alt: image alternative text
----
-```
-
-### Image caption
+### Caption
 
 Add italics to the next line of an image，then it will become the caption and appear at the bottom of the image:
 
@@ -102,71 +123,130 @@ Add italics to the next line of an image，then it will become the caption and a
 ![img-description](/path/to/image)
 _Image Caption_
 ```
+{: .nolineno}
 
-### Image size
+### Size
 
-You can specify the width (and height) of a image with `width`:
+In order to prevent the page content layout from shifting when the image is loaded, we should set the width and height for each image:
 
 ```markdown
-![Desktop View](/assets/img/sample/mockup.png){: width="400"}
+![Desktop View](/assets/img/sample/mockup.png){: width="700" height="400" }
 ```
+{: .nolineno}
 
-### Image position
+Starting from _Chirpy v5.0.0_, `height` and `width` support abbreviations (`height` → `h`, `width` → `w`). The following example has the same effect as the above:
 
-By default, the image is centered, but you can specify the position by using one of class `normal` , `left` and `right`. For example:
+```markdown
+![Desktop View](/assets/img/sample/mockup.png){: w="700" h="400" }
+```
+{: .nolineno}
+
+### Position
+
+By default, the image is centered, but you can specify the position by using one of the classes `normal`, `left`, and `right`.
+
+> Once the position is specified, the image caption should not be added.
+{: .prompt-warning }
 
 - **Normal position**
 
   Image will be left aligned in below sample:
 
   ```markdown
-  ![Desktop View](/assets/img/sample/mockup.png){: .normal}
+  ![Desktop View](/assets/img/sample/mockup.png){: .normal }
   ```
+  {: .nolineno}
 
 - **Float to the left**
 
   ```markdown
-  ![Desktop View](/assets/img/sample/mockup.png){: .left}
+  ![Desktop View](/assets/img/sample/mockup.png){: .left }
   ```
+  {: .nolineno}
 
 - **Float to the right**
 
   ```markdown
-  ![Desktop View](/assets/img/sample/mockup.png){: .right}
+  ![Desktop View](/assets/img/sample/mockup.png){: .right }
   ```
+  {: .nolineno}
 
-> **Limitation**: Once you specify the position of an image, it is forbidden to add the image caption.
-
-### Image shadow
+### Shadow
 
 The screenshots of the program window can be considered to show the shadow effect, and the shadow will be visible in the `light` mode:
 
 ```markdown
-![Desktop View](/assets/img/sample/mockup.png){: .shadow}
+![Desktop View](/assets/img/sample/mockup.png){: .shadow }
 ```
-
+{: .nolineno}
 
 ### CDN URL
 
-If you host the images on the CDN, you can save the time of repeatedly writing the CDN url by assigning the variable `img_cdn` of `_config.yml` file:
+If you host the images on the CDN, you can save the time of repeatedly writing the CDN URL by assigning the variable `img_cdn` of `_config.yml`{: .filepath} file:
 
 ```yaml
 img_cdn: https://cdn.com
 ```
+{: file='_config.yml' .nolineno}
 
-Once `img_cdn` is assigned, the CDN url will be added to the path of all images (images of site avatar and posts) starting with `/`.
+Once `img_cdn` is assigned, the CDN URL will be added to the path of all images (images of site avatar and posts) starting with `/`.
 
 For instance, when using images:
 
 ```markdown
 ![The flower](/path/to/flower.png)
 ```
+{: .nolineno}
 
 The parsing result will automatically add the CDN prefix `https://cdn.com` before the image path:
 
 ```html
 <img src="https://cdn.com/path/to/flower.png" alt="The flower">
 ```
+{: .nolineno}
+
+### Image Path
+
+When a post contains many images, it will be a time-consuming task to repeatedly define the path of the images. To solve this, we can define this path in the YAML block of the post:
+
+```yml
+---
+img_path: /img/path/
+---
+```
+{: .nolineno }
+
+And then, the image source of Markdown can write the file name directly:
+
+```md
+![The flower](flower.png)
+```
+{: .nolineno }
+
+The output will be:
+
+```html
+<img src="/img/path/flower.png" alt="The flower">
+```
+{: .nolineno }
+
+### Preview Image
+
+If you want to add an image to the top of the post contents, specify the attribute `path`, `width`, `height`, and `alt` for the image:
+
+```yaml
+---
+image:
+  path: /path/to/image/file
+  width: 1000   # in pixels
+  height: 400   # in pixels
+  alt: image alternative text
+---
+```
+
+Except for `alt`, all other options are necessary, especially the `width` and `height`, which are related to user experience and web page loading performance. The above section "[Size](#size)" also mentions this.
+
+Starting from _Chirpy v5.0.0_, the attributes `height` and `width` can be abbreviated: `height` → `h`, `width` → `w`. In addition, the [`img_path`](#image-path) can also be passed to the preview image, that is, when it has been set, the  attribute `path` only needs the image file name.
 
 ## Pinned Posts
 
@@ -178,33 +258,82 @@ pin: true
 ---
 ```
 
-## Code Block
+## Prompts
 
-Markdown symbols ```` ``` ```` can easily create a code block as following examples.
+There are several types of prompts: `tip`, `info`, `warning`, and `danger`. They can be generated by adding the class `prompt-{type}` to the blockquote. For example, define a prompt of type `info` as follows:
 
+```md
+> Example line for prompt.
+{: .prompt-info }
 ```
-This is a common code snippet, without syntax highlight and line number.
+{: .nolineno }
+
+## Syntax
+
+### Inline Code
+
+```md
+`inline code part`
 ```
+{: .nolineno }
 
-## Specific Language
+### Filepath Hightlight
 
-Using ```` ```language ```` you will get code snippets with line numbers and syntax highlight.
+```md
+`/path/to/a/file.extend`{: .filepath}
+```
+{: .nolineno }
 
-> **Note**: The Jekyll style `{% raw %}{%{% endraw %} highlight LANGUAGE {% raw %}%}{% endraw %}` or `{% raw %}{%{% endraw %} highlight LANGUAGE linenos {% raw %}%}{% endraw %}` are not allowed to be used in this theme !
+### Code Block
 
+Markdown symbols ```` ``` ```` can easily create a code block as follows:
+
+````md
+```
+This is a plaintext code snippet.
+```
+````
+
+#### Specifying Language
+
+Using ```` ```{language} ```` you will get a code block with syntax highlight:
+
+````markdown
 ```yaml
-# Yaml code snippet
-items:
-    - part_no:   A4786
-      descrip:   Water Bucket (Filled)
-      price:     1.47
-      quantity:  4
+key: value
 ```
+````
 
-### Liquid Codes
+> The Jekyll tag `{% highlight %}` is not compatible with this theme.
+{: .prompt-danger }
 
-If you want to display the **Liquid** snippet, surround the liquid code with `{% raw %}{%{% endraw %} raw {%raw%}%}{%endraw%}` and `{% raw %}{%{% endraw %} endraw {%raw%}%}{%endraw%}` .
+#### Line Number
 
+By default, all languages except `plaintext`, `console`, and `terminal` will display line numbers. When you want to hide the line number of a code block, add the class `nolineno` to it:
+
+````markdown
+```shell
+echo 'No more line numbers!'
+```
+{: .nolineno }
+````
+
+#### Specifying the Filename
+
+You may have noticed that the code language will be displayed at the top of the code block. If you want to replace it with the file name, you can add the attribute `file` to achieve this:
+
+````markdown
+```shell
+# content
+```
+{: file="path/to/file" }
+````
+
+#### Liquid Codes
+
+If you want to display the **Liquid** snippet, surround the liquid code with `{% raw %}` and `{% endraw %}`:
+
+````markdown
 {% raw %}
 ```liquid
 {% if product.title contains 'Pack' %}
@@ -212,8 +341,10 @@ If you want to display the **Liquid** snippet, surround the liquid code with `{%
 {% endif %}
 ```
 {% endraw %}
+````
+
+Or adding `render_with_liquid: false` (Requires Jekyll 4.0 or higher) to the post's YAML block.
 
 ## Learn More
 
 For more knowledge about Jekyll posts, visit the [Jekyll Docs: Posts](https://jekyllrb.com/docs/posts/).
-

_posts/2019-08-09-getting-started.md

@@ -1,6 +1,6 @@
 ---
 title: Getting Started
-author: Cotes Chung
+author: cotes
 date: 2019-08-09 20:55:00 +0800
 categories: [Blogging, Tutorial]
 tags: [getting started]
@@ -9,54 +9,24 @@ pin: true
 
 ## Prerequisites
 
-Follow the [Jekyll Docs](https://jekyllrb.com/docs/installation/) to complete the installation of `Ruby`, `RubyGems`, `Jekyll` and `Bundler`.
+Follow the instructions in the [Jekyll Docs](https://jekyllrb.com/docs/installation/) to complete the installation of `Ruby`, `RubyGems`, `Jekyll`, and `Bundler`. In addition, [Git](https://git-scm.com/) is also required to be installed.
 
 ## Installation
 
-There are two ways to get the theme:
+### Creating a New Site
 
-- **Install from RubyGems** - Easy to update, isolate irrelevant project files so you can focus on writing.
-- **Fork on GitHub** - Convenient for custom development, but difficult to update, only suitable for web developers.
+There are two ways to create a new repository for this theme:
 
-### Installing the Theme Gem
+- [**Using the Chirpy Starter**](#option-1-using-the-chirpy-starter) - Easy to upgrade, isolates irrelevant project files so you can focus on writing.
+- [**Forking on GitHub**](#option-2-forking-on-github) - Convenient for custom development, but difficult to upgrade. Unless you are familiar with Jekyll and are determined to tweak or contribute to this project, this approach is not recommended.
 
-Add this line to your Jekyll site's `Gemfile`:
+#### Option 1. Using the Chirpy Starter
 
-```ruby
-gem "jekyll-theme-chirpy"
-```
+Create a new repository from the [**Chirpy Starter**][use-starter] and name it `<GH_USERNAME>.github.io`, where `GH_USERNAME` represents your GitHub username.
 
-And add this line to your Jekyll site's `_config.yml`:
+#### Option 2. Forking on GitHub
 
-```yaml
-theme: jekyll-theme-chirpy
-```
-
-And then execute:
-
-```console
-$ bundle
-```
-
-Finally, copy the required files from the theme's gem (for detailed files, see [starter project][starter]) to your Jekyll site.
-
-> **Hint**: To locate the installed theme’s gem, execute:
->
-> ```console
-> $ bundle info --path jekyll-theme-chirpy
-> ```
-
-Or you can [**use the starter template**][use-starter] to create a Jekyll site to save time copying files from the theme's gem. We have prepared everything for you there!
-
-### Fork on GitHub
-
-[Fork **Chirpy**](https://github.com/cotes2020/jekyll-theme-chirpy/fork) on GitHub and then clone your fork to local. (Please note that the default branch code is in development.  If you want the blog to be stable, please switch to the [latest tag](https://github.com/cotes2020/jekyll-theme-chirpy/tags) and start writing.)
-
-Install gem dependencies by:
-
-```console
-$ bundle
-```
+[Fork **Chirpy**](https://github.com/cotes2020/jekyll-theme-chirpy/fork) on GitHub and rename it to `<GH_USERNAME>.github.io`. Please note that the default branch code is in development.  If you want the site to be stable, please switch to the [latest tag][latest-tag] and start writing.
 
 And then execute:
 
@@ -64,30 +34,52 @@ And then execute:
 $ bash tools/init.sh
 ```
 
-> **Note**: If you don't plan to deploy your site on GitHub Pages, append parameter option `--no-gh` at the end of the above command.
+> If you don't want to deploy your site on GitHub Pages, append option `--no-gh` at the end of the above command.
+{: .prompt-info }
 
-What it does is:
+The above command will:
 
-1. Remove some files or directories from your repository:
-    - `.travis.yml`
-    - files under `_posts`
-    - folder `docs`
+1. Removes some files or directories from your repository:
+    - `.travis.yml`{: .filepath}
+    - files under `_posts`{: .filepath}
 
-2. If you use the `--no-gh` option, the directory `.github` will be deleted. Otherwise, setup the GitHub Action workflow by removing the extension `.hook` of `.github/workflows/pages-deploy.yml.hook`, and then remove the other files and directories in the folder `.github`.
+2. If the option `--no-gh` is provided, the directory `.github`{: .filepath} will be deleted. Otherwise, set up the GitHub Action workflow by removing the extension `.hook`{: .filepath} of `.github/workflows/pages-deploy.yml.hook`{: .filepath}, and then remove the other files and directories in the folder `.github`{: .filepath}.
 
-3. Automatically create a commit to save the changes.
+3. Removes item `Gemfile.lock` from `.gitignore`{: .filepath}.
+
+4. Creates a new commit to save the changes automatically.
+
+### Installing Dependencies
+
+Before running for the first time, go to the root directory of your site, and install dependencies as follows:
+
+```console
+$ bundle
+```
 
 ## Usage
 
 ### Configuration
 
-Update the variables of `_config.yml` as needed. Some of them are typical options:
+Update the variables of `_config.yml`{: .filepath} as needed. Some of them are typical options:
 
 - `url`
 - `avatar`
 - `timezone`
 - `lang`
 
+### Customing Stylesheet
+
+If you need to customize the stylesheet, copy the theme's `assets/css/style.scss`{: .filepath} to the same path on your Jekyll site, and then add the custom style at the end of the style file.
+
+Starting from [`v4.1.0`][chirpy-4.1.0], if you want to overwrite the SASS variables defined in `_sass/addon/variables.scss`{: .filepath}, create a new file `_sass/variables-hook.scss`{: .filepath} and assign new values to the target variable in it.
+
+### Customing Static Assets
+
+Static assets configuration was introduced in version `5.1.0`. The CDN of the static assets is defined by file `_data/assets/cross_origin.yml`{: .filepath }, and you can replace some of them according to the network conditions in the region where your website is published.
+
+Also, if you'd like to self-host the static assets, please refer to the [_chirpy-static-assets_](https://github.com/cotes2020/chirpy-static-assets#readme).
+
 ### Running Local Server
 
 You may want to preview the site contents before publishing, so just run it by:
@@ -98,55 +90,62 @@ $ bundle exec jekyll s
 
 Or run the site on Docker with the following command:
 
-```terminal
+```console
 $ docker run -it --rm \
     --volume="$PWD:/srv/jekyll" \
     -p 4000:4000 jekyll/jekyll \
     jekyll serve
 ```
 
-Open a browser and visit to _<http://localhost:4000>_.
+After a while, the local service will be published at _<http://127.0.0.1:4000>_.
 
-### Deployment
+## Deployment
 
-Before the deployment begins, checkout the file `_config.yml` and make sure the `url` is configured correctly. Furthermore, if you prefer the [**project site**](https://help.github.com/en/github/working-with-github-pages/about-github-pages#types-of-github-pages-sites) and don't use a custom domain, or you want to visit your website with a base URL on a web server other than **GitHub Pages**, remember to change the `baseurl` to your project name that starting with a slash, e.g, `/project-name`.
+Before the deployment begins, check out the file `_config.yml`{: .filepath} and make sure the `url` is configured correctly. Furthermore, if you prefer the [**project site**](https://help.github.com/en/github/working-with-github-pages/about-github-pages#types-of-github-pages-sites) and don't use a custom domain, or you want to visit your website with a base URL on a web server other than **GitHub Pages**, remember to change the `baseurl` to your project name that starts with a slash, e.g, `/project-name`.
 
 Now you can choose ONE of the following methods to deploy your Jekyll site.
 
-#### Deploy on GitHub Pages
+### Deploy by Using Github Actions
 
-For security reasons, GitHub Pages build runs on `safe` mode, which restricts us from using plugins to generate additional page files. Therefore, we can use **GitHub Actions** to build the site, store the built site files on a new branch, and use that branch as the source of the GH Pages service.
+For security reasons, GitHub Pages build runs on `safe` mode, which restricts us from using plugins to generate additional page files. Therefore, we can use **GitHub Actions** to build the site, store the built site files on a new branch, and use that branch as the source of the GitHub Pages service.
 
 Quickly check the files needed for GitHub Actions build:
 
-- Ensure your Jekyll site has the file `.github/workflows/pages-deploy.yml`. Otherwise, create a new one and fill in the contents of the [workflow file][workflow], and the value of the `on.push.branches` should be the same as your repo's default branch name.
-- Ensure your Jekyll site has file `tools/test.sh` and `tools/deploy.sh`. Otherwise, copy them from this repo to your Jekyll site.
+- Ensure your Jekyll site has the file `.github/workflows/pages-deploy.yml`{: .filepath}. Otherwise, create a new one and fill in the contents of the [sample file][workflow], and the value of the `on.push.branches` should be the same as your repo's default branch name.
 
-And then rename your repository to `<GH-USERNAME>.github.io` on GitHub.
+- Ensure your Jekyll site has file `tools/deploy.sh`{: .filepath}. Otherwise, copy it from here to your Jekyll site.
+
+- Furthermore, if you have committed `Gemfile.lock`{: .filepath} to the repo, and your runtime system is not Linux, don't forget to update the platform list in the lock file:
+
+  ```console
+  $ bundle lock --add-platform x86_64-linux
+  ```
+
+After the above steps, rename your repository to `<GH_USERNAME>.github.io` on GitHub.
 
 Now publish your Jekyll site by:
 
 1. Push any commit to remote to trigger the GitHub Actions workflow. Once the build is complete and successful, a new remote branch named `gh-pages` will appear to store the built site files.
 
-2. Browse to your repo's landing page on GitHub and select the branch `gh-pages` as the [publishing source](https://docs.github.com/en/github/working-with-github-pages/configuring-a-publishing-source-for-your-github-pages-site) through _Settings_ → _Options_ → _GitHub Pages_:
+2. Browse to your repository on GitHub. Select the tab _Settings_, then click _Pages_ in the left navigation bar, and then in the section **Source** of _GitHub Pages_, select the `/(root)` directory of branch `gh-pages` as the [publishing source][pages-src]. Remember to click <kbd>Save</kbd> before leaving.
 
-    ![gh-pages-sources](https://cdn.jsdelivr.net/gh/cotes2020/chirpy-images/posts/20190809/gh-pages-sources.png)
+    ![gh-pages-sources](/posts/20190809/gh-pages-sources.png){: width="1580" height="250" }
 
 3. Visit your website at the address indicated by GitHub.
 
-#### Deploy on Other Platforms
+### Manually Build and Deploy
 
-On platforms other than GitHub, we cannot enjoy the convenience of **GitHub Actions**. Therefore, we should build the site locally (or on some other 3rd-party CI platform) and then put the site files on the server.
+On self-hosted servers, you cannot enjoy the convenience of **GitHub Actions**. Therefore, you should build the site on your local machine and then upload the site files to the server.
 
-Go to the root of the source project, build your site by:
+Go to the root of the source project, and build your site as follows:
 
 ```console
 $ JEKYLL_ENV=production bundle exec jekyll b
 ```
 
-Or build the site with Docker by:
+Or build the site on Docker:
 
-```terminal
+```console
 $ docker run -it --rm \
     --env JEKYLL_ENV=production \
     --volume="$PWD:/srv/jekyll" \
@@ -154,8 +153,34 @@ $ docker run -it --rm \
     jekyll build
 ```
 
-Unless you specified the output path, the generated site files will be placed in folder `_site` of the project's root directory. Now you should upload those files to your web server.
+Unless you specified the output path, the generated site files will be placed in folder `_site`{: .filepath} of the project's root directory. Now you should upload those files to the target server.
+
+## Upgrading
+
+It depends on how you use the theme:
+
+- If you are using the theme gem (there will be `gem "jekyll-theme-chirpy"` in the `Gemfile`{: .filepath}), editing the `Gemfile`{: .filepath} and update the version number of the theme gem, for example:
+
+  ```diff
+  - gem "jekyll-theme-chirpy", "~> 3.2", ">= 3.2.1"
+  + gem "jekyll-theme-chirpy", "~> 3.3", ">= 3.3.0"
+  ```
+  {: .nolineno file="Gemfile" }
+
+  And then execute the following command:
+
+  ```console
+  $ bundle update jekyll-theme-chirpy
+  ```
+
+  As the version upgrades, the critical files (for details, see the [Startup Template][starter]) and configuration options will change. Please refer to the [Upgrade Guide](https://github.com/cotes2020/jekyll-theme-chirpy/wiki/Upgrade-Guide) to keep your repo's files in sync with the latest version of the theme.
+
+- If you forked from the source project (there will be `gemspec` in the `Gemfile`{: .filepath} of your site), then merge the [latest upstream tags][latest-tag] into your Jekyll site to complete the upgrade.
+The merge is likely to conflict with your local modifications. Please be patient and careful to resolve these conflicts.
 
 [starter]: https://github.com/cotes2020/chirpy-starter
 [use-starter]: https://github.com/cotes2020/chirpy-starter/generate
 [workflow]: https://github.com/cotes2020/jekyll-theme-chirpy/blob/master/.github/workflows/pages-deploy.yml.hook
+[chirpy-4.1.0]: https://github.com/cotes2020/jekyll-theme-chirpy/releases/tag/v4.1.0
+[pages-src]: https://docs.github.com/en/github/working-with-github-pages/configuring-a-publishing-source-for-your-github-pages-site
+[latest-tag]: https://github.com/cotes2020/jekyll-theme-chirpy/tags

_posts/2019-08-11-customize-the-favicon.md

@@ -1,16 +1,16 @@
 ---
 title: Customize the Favicon
-author: Cotes Chung
+author: cotes
 date: 2019-08-11 00:34:00 +0800
 categories: [Blogging, Tutorial]
 tags: [favicon]
 ---
 
-The [favicons](https://www.favicon-generator.org/about/) of [**Chirpy**](https://github.com/cotes2020/jekyll-theme-chirpy/) are placed in the directory `assets/img/favicons/`. You may need to replace them with your own. The following sections will guide you how to create and replace the default favicons.
+The [favicons](https://www.favicon-generator.org/about/) of [**Chirpy**](https://github.com/cotes2020/jekyll-theme-chirpy/) are placed in the directory `assets/img/favicons/`{: .filepath}. You may want to replace them with your own. The following sections will guide you to create and replace the default favicons.
 
 ## Generate the favicon
 
-Prepare a square image (PNG, JPG, or SVG) with a size of 512x512 or more, and then go to the online tool [**Real Favicon Generator**](https://realfavicongenerator.net/) and click button <kbd>Select your Favicon image</kbd> to upload your image file.
+Prepare a square image (PNG, JPG, or SVG) with a size of 512x512 or more, and then go to the online tool [**Real Favicon Generator**](https://realfavicongenerator.net/) and click the button <kbd>Select your Favicon image</kbd> to upload your image file.
 
 In the next step, the webpage will show all usage scenarios. You can keep the default options, scroll to the bottom of the page, and click the button <kbd>Generate your Favicons and HTML code</kbd> to generate the favicon.
 
@@ -18,20 +18,19 @@ In the next step, the webpage will show all usage scenarios. You can keep the de
 
 Download the generated package, unzip and delete the following two from the extracted files:
 
-- `browserconfig.xml`
-- `site.webmanifest`
+- `browserconfig.xml`{: .filepath}
+- `site.webmanifest`{: .filepath}
 
-Now, copy the remaining image files (`PNG` and `ICO`) to cover the original files in the folder `assets/img/favicons/` of your Jekyll site.
+And then copy the remaining image files (`.PNG`{: .filepath} and `.ICO`{: .filepath}) to cover the original files in the directory `assets/img/favicons/`{: .filepath} of your Jekyll site. If your Jekyll site doesn't have this directory yet, just create one.
 
-The following table will helps you understand the changes to the favicon files:
+The following table will help you understand the changes to the favicon files:
 
 | File(s)             | From Online Tool                  | From Chirpy |
 |---------------------|:---------------------------------:|:-----------:|
 | `*.PNG`             | ✓                                 | ✗           |
 | `*.ICO`             | ✓                                 | ✗           |
-| `browserconfig.xml` | ✗                                 | ✓           |
-| `site.webmanifest`  | ✗                                 | ✓           |
 
-> Note: ✓ means keep, ✗ means delete.
+>  ✓ means keep, ✗ means delete.
+{: .prompt-info }
 
 The next time you build the site, the favicon will be replaced with a customized edition.

_posts/2021-01-03-enable-google-pv.md

@@ -1,6 +1,6 @@
 ---
 title: Enable Google Page Views
-author: Dinesh Prasanth Moluguwan Krishnamoorthy
+author: sille_bille
 date: 2021-01-03 18:32:00 -0500
 categories: [Blogging, Tutorial]
 tags: [google analytics, pageviews]
@@ -13,29 +13,29 @@ This post is to enable Page Views on the [**Chirpy**][chirpy-homepage] theme bas
 
 ### Create GA account and property
 
-First, you need to setup your account on Google analytics. While your create your account, you must create your first **Property** as well.
+First, you need to set up your account on Google analytics. While you create your account, you must create your first **Property** as well.
 
 1. Head to <https://analytics.google.com/> and click on **Start Measuring**
 2. Enter your desired _Account Name_ and choose the desired checkboxes
 3. Enter your desired _Property Name_. This is the name of the tracker project that appears on your Google Analytics dashboard
 4. Enter the required information _About your business_
-5. Hit _Create_ and accept any license popup to setup your Google Analytics account and create your property
+5. Hit _Create_ and accept any license popup to set up your Google Analytics account and create your property
 
 ### Create Data Stream
 
-With your property created, you now need to set up Data Stream to track your blog traffic. After you signup, the prompt should automatically take you to creating your first **Data Stream**. If not, follow these steps:
+With your property created, you now need to set up Data Stream to track your blog traffic. After you signup, the prompt should automatically take you to create your first **Data Stream**. If not, follow these steps:
 
 1. Go to **Admin** on the left column
-2. Select the desired property from the drop down on the second column
+2. Select the desired property from the drop-down on the second column
 3. Click on **Data Streams**
 4. Add a stream and click on **Web**
 5. Enter your blog's URL
 
 It should look like this:
 
-![google-analytics-data-stream](https://cdn.jsdelivr.net/gh/cotes2020/chirpy-images/posts/20210103/01-google-analytics-data-stream.png)
+![google-analytics-data-stream](/posts/20210103/01-google-analytics-data-stream.png){: width="1086" height="542"}
 
-Now, click on the new data stream and grab the **Measurement ID**. It should look something like `G-V6XXXXXXXX`. Copy this to your `_config.yml` file
+Now, click on the new data stream and grab the **Measurement ID**. It should look something like `G-V6XXXXXXXX`. Copy this to your `_config.yml`{: .filepath} file:
 
 ```yaml
 google_analytics:
@@ -45,14 +45,15 @@ google_analytics:
     proxy_endpoint:   # fill in the Google Analytics superProxy endpoint of Google App Engine
     cache_path:       # the local PV cache data, friendly to visitors from GFW region
 ```
+{: file="_config.yml"}
 
-When you push these changes to your blog, you should start seeing the traffic on your Google Analytics. Play around with Google Analytics dashboard to get familiar with the options available as it takes like 5 mins to pickup your changes. You should now be able to monitor your traffic in realtime.
+When you push these changes to your blog, you should start seeing the traffic on your Google Analytics. Play around with the Google Analytics dashboard to get familiar with the options available as it takes like 5 mins to pick up your changes. You should now be able to monitor your traffic in real time.
 
-![google-analytics-realtime](https://cdn.jsdelivr.net/gh/cotes2020/chirpy-images/posts/20210103/02-google-analytics-realtime.png)
+![google-analytics-realtime](/posts/20210103/02-google-analytics-realtime.png){: width="616" height="557"}
 
 ## Setup Page Views
 
-There is a detailed [tutorial](https://developers.google.com/analytics/solutions/google-analytics-super-proxy) available to set up Google Analytics superProxy. But, if you are interested to just quickly get your Chirpy-based blog display page views, follow along. These steps were tested on a Linux machine. If you are running Windows, you can use Git bash terminal to run Unix-like commands.
+There is a detailed [tutorial](https://developers.google.com/analytics/solutions/google-analytics-super-proxy) available to set up Google Analytics superProxy. But, if you are interested to just quickly get your Chirpy-based blog display page views, follow along. These steps were tested on a Linux machine. If you are running Windows, you can use the Git bash terminal to run Unix-like commands.
 
 ### Setup Google App Engine
 
@@ -66,7 +67,7 @@ There is a detailed [tutorial](https://developers.google.com/analytics/solutions
 
 5. Select **Python** language and **Standard** environment
 
-6. Enable billing account. Yeah, you have to link your credit card. But, you won't be billed unless you exceed your free quota. For a simple blog, free quota is more than sufficient.
+6. Enable billing account. Yeah, you have to link your credit card. But, you won't be billed unless you exceed your free quota. For a simple blog, the free quota is more than sufficient.
 
 7. Go to your App Engine dashboard on your browser and select **API & Services** from the left navigation menu
 
@@ -76,7 +77,7 @@ There is a detailed [tutorial](https://developers.google.com/analytics/solutions
 
 10. On the left, Click on _OAuth Consent Screen_ and accept **Configure Consent Screen**. Select **External** since your blog is probably hosted for the public. Click on **Publish** under _Publishing Status_
 
-11. Click on **Credentials** on the left and create a new **OAuth Client IDs** credential. Make sure to add a entry under `Authorized redirect URIs` that matches: `https://<project-id>.<region>.r.appspot.com/admin/auth`
+11. Click on **Credentials** on the left and create a new **OAuth Client IDs** credential. Make sure to add an entry under `Authorized redirect URIs` that matches: `https://<project-id>.<region>.r.appspot.com/admin/auth`
 
 12. Note down the **Your Client ID** and **Your Client Secret**. You'll need this in the next section.
 
@@ -112,15 +113,16 @@ There is a detailed [tutorial](https://developers.google.com/analytics/solutions
 
 1. Clone the **Google Analytics superProxy** project on Github: <https://github.com/googleanalytics/google-analytics-super-proxy> to your local.
 
-2. Remove the first 2 lines in the [`src/app.yaml`](https://github.com/googleanalytics/google-analytics-super-proxy/blob/master/src/app.yaml#L1-L2) file:
-  ```diff
-- application: your-project-id
-- version: 1
-  ```
+2.  Remove the first 2 lines in the [`src/app.yaml`{: .filepath}](https://github.com/googleanalytics/google-analytics-super-proxy/blob/master/src/app.yaml#L1-L2) file:
 
-3. In `src/config.py`, add the `OAUTH_CLIENT_ID` and `OAUTH_CLIENT_SECRET` that you gathered from you App Engine Dashboard.
+    ```diff
+    - application: your-project-id
+    - version: 1
+    ```
 
-4. Enter any random key for `XSRF_KEY`, your `config.py` should look similar to this
+3. In `src/config.py`{: .filepath}, add the `OAUTH_CLIENT_ID` and `OAUTH_CLIENT_SECRET` that you gathered from your App Engine Dashboard.
+
+4.  Enter any random key for `XSRF_KEY`, your `config.py`{: .filepath} should look similar to this
 
     ```python
     #!/usr/bin/python2.7
@@ -140,10 +142,13 @@ There is a detailed [tutorial](https://developers.google.com/analytics/solutions
     # XSRF Settings
     XSRF_KEY = 'OnceUponATimeThereLivedALegend'
     ```
+    {: file="src/config.py"}
 
-    **Tip:** You can configure a custom domain instead of `https://PROJECT_ID.REGION_ID.r.appspot.com`. But, for the sake of keeping it simple, we will be using the Google provided default URL.
+    > You can configure a custom domain instead of `https://PROJECT_ID.REGION_ID.r.appspot.com`.
+    > But, for the sake of keeping it simple, we will be using the Google provided default URL.
+    {: .prompt-info }
 
-5. From inside the src/ directory, deploy the app
+5.  From inside the `src/`{: .filepath} directory, deploy the app
 
     ```console
     [root@bc96abf71ef8 src]# gcloud app deploy
@@ -183,7 +188,7 @@ There is a detailed [tutorial](https://developers.google.com/analytics/solutions
 
 If everything went good, you'll get this screen:
 
-![superProxy-deployed](https://cdn.jsdelivr.net/gh/cotes2020/chirpy-images/posts/20210103/03-superProxy-deployed.png)
+![superProxy-deployed](/posts/20210103/03-superProxy-deployed.png){: width="1366" height="354"}
 
 ### Create Google Analytics Query
 
@@ -200,24 +205,23 @@ In order to reduce the returned results and reduce the network bandwidth, we add
 
 - **filters**: fill in `ga:pagePath=~^/posts/.*/$;ga:pagePath!@=`.
 
-    Among them, `;` means using _logical AND_ to concatenate two rules.
+  Among them, `;` means using _logical AND_ to concatenate two rules.
 
-    If the `site.baseurl` is specified, change the first filtering rule to `ga:pagePath=~^/BASE_URL/posts/.*/$`, where `BASE_URL` is the value of `site.baseurl`.
+  If the `site.baseurl` is specified, change the first filtering rule to `ga:pagePath=~^/BASE_URL/posts/.*/$`, where `BASE_URL` is the value of `site.baseurl`.
 
-After <kbd>Run Query</kbd>, copy the generated contents of **API Query URI** at the bottom of the page, and fill in the **Encoded URI for the query** of SuperProxy on GAE.
+After <kbd>Run Query</kbd>, copy the generated contents of **API Query URI** at the bottom of the page and fill in the **Encoded URI for the query** of SuperProxy on GAE.
 
 After the query is saved on GAE, a **Public Endpoint** (public access address) will be generated, and we will get the query result in JSON format when accessing it. Finally, click <kbd>Enable Endpoint</kbd> in **Public Request Endpoint** to make the query effective, and click <kbd>Start Scheduling</kbd> in **Scheduling** to start the scheduled task.
 
-![superproxy-query](https://cdn.jsdelivr.net/gh/cotes2020/chirpy-images/posts/20210103/04-superproxy-query.png)
-
+![superproxy-query](/posts/20210103/04-superproxy-query.png){: width="1100" height="126"}
 
 ## Configure Chirpy to Display Page View
 
 Once all the hard part is done, it is very easy to enable the Page View on Chirpy theme. Your superProxy dashboard should look something like below and you can grab the required values.
 
-![superproxy-dashboard](https://cdn.jsdelivr.net/gh/cotes2020/chirpy-images/posts/20210103/05-superproxy-dashboard.png)
+![superproxy-dashboard](/posts/20210103/05-superproxy-dashboard.png){: width="1210" height="694"}
 
-Update the `_config.yml` file of [**Chirpy**][chirpy-homepage] project with the values from your dashboard, to look similar to the following:
+Update the `_config.yml`{: .filepath} file of [**Chirpy**][chirpy-homepage] project with the values from your dashboard, to look similar to the following:
 
 ```yaml
 google_analytics:
@@ -226,6 +230,7 @@ google_analytics:
     proxy_endpoint: 'https://PROJECT_ID.REGION_ID.r.appspot.com/query?id=<ID FROM SUPER PROXY>'
     cache_path:       # the local PV cache data, friendly to visitors from GFW region
 ```
+{: file="_config.yml"}
 
 Now, you should see the Page View enabled on your blog.