Improved the page recognition.

Useful for label localization

.github/CODE_OF_CONDUCT.md

@@ -0,0 +1,76 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to making participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, sex characteristics, gender identity and expression,
+level of experience, education, socio-economic status, nationality, personal
+appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or
+ advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic
+ address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+ professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct, or to ban temporarily or
+permanently any contributor for other behaviors that they deem inappropriate,
+threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces
+when an individual is representing the project or its community. Examples of
+representing a project or community include using an official project e-mail
+address, posting via an official social media account, or acting as an appointed
+representative at an online or offline event. Representation of a project may be
+further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported by contacting the project team at cotes.chung@gmail.com. All
+complaints will be reviewed and investigated and will result in a response that
+is deemed necessary and appropriate to the circumstances. The project team is
+obligated to maintain confidentiality with regard to the reporter of an incident.
+Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
+available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see
+https://www.contributor-covenant.org/faq

.github/CONTRIBUTING.md

@@ -2,19 +2,13 @@
 
 I want to thank you for sparing a time to improve this project! Here are some guidelines for contributing：
 
-## Bug Reporting
+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` type issue to discuss whether your idea fits the project. 
 
-If you found a bug, please ensure it doesn't appear in other existing [issues](https://github.com/cotes2020/jekyll-theme-chirpy/issues). After that, [create a new issues](https://github.com/cotes2020/jekyll-theme-chirpy/issues/new/choose) with template `Bug Report` and follow it's illustration to describe the situation.
+Generally, contribute to the project by:
 
-
-## Code Optimization
-
-If you are willing to improve some of the existing code, such as performance optimization, code simplification, or even correct spelling errors of variable names, please submit a new PR to help us.
-
-
-## Feature Request
-
-Basically, to ensure that the blog design is not confused, we do not accept suggestions for design changes, such as colors scheme, fonts, typography, etc. As long as your request is not a design issue, it is recommended to first submit a `Feature Request` issue to discuss whether your idea fits the project. Once the discussion is complete and the request is approved, fork this project, complete the development of new features, and submit a `Pull Request`. What's more, the PR should be merged into `master` branch without conflict.
+1. Fork this project.
+2. Create a new branch `my-new-feature`(or `fix-a-bug`), then complete the development, commit and push.
+3. Submit a new `Pull Request`.
 
 
 ---

.github/ISSUE_TEMPLATE/bug_report.md

@@ -4,19 +4,27 @@ about: Create a report to help us improve
 labels: bug
 ---
 
-<!-- Please make sure you have read the README or Wiki, and your question does not appear in other existing issues (including closed ones). Thanks for your cooperation! Now let's start it. -->
+<!-- Note: Please follow the template to open a new issue, otherwise your question will probably be ignored. -->
 
-**Describe the bug**
+## 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.
+
+
+## Describe the bug
 <!-- A clear and concise description of what the bug is. -->
 
 **To Reproduce**
-<!--
+
 Steps to reproduce the behavior:
+
 1. Go to '...'
 2. Click on '....'
 3. Scroll down to '....'
 4. See error
--->
+
 
 **Expected behavior**
 <!-- A clear and concise description of what you expected to happen. -->
@@ -24,12 +32,14 @@ Steps to reproduce the behavior:
 **Screenshots**
 <!-- If applicable, add screenshots to help explain your problem. -->
 
-**Desktop (please complete the following information):**
+**Desktop**
+<!-- Please complete the following information -->
  - OS: [e.g. iOS]
  - Browser: [e.g. chrome, safari]
  - Version: [e.g. 22]
 
-**Smartphone (please complete the following information):**
+**Smartphone**
+<!-- please complete the following information -->
  - Device: [e.g. iPhone6]
  - OS: [e.g. iOS8.1]
  - Browser: [e.g. stock browser, safari]

.github/ISSUE_TEMPLATE/feature_request.md

@@ -4,18 +4,27 @@ about: Suggest an idea for this project
 labels: enhancement
 ---
 
-<!-- Please make sure your request does not appear in other existing issues (including closed ones). Thanks for your cooperation. Now, I can't wait to listen your idea! -->
+<!-- Note: Please follow the template to open a new issue, otherwise your question will probably be ignored. -->
+
+## Checklist
+<!-- Please complete the following list of tasks, and then check it by change 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).
+- [ ] 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.**
+## 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**
+
+## Describe the solution you'd like
 <!-- A clear and concise description of what you want to happen. -->
 
-**Describe alternatives you've considered**
+
+## Describe alternatives you've considered
 <!-- A clear and concise description of any alternative solutions or features you've considered. -->
 
 
-**Additional context**
+## Additional context
 <!-- Add any other context or screenshots about the feature request here. -->

.github/ISSUE_TEMPLATE/question.md

@@ -4,54 +4,23 @@ about: Ask what ever you want
 labels: question
 ---
 
-<!-- Please make sure you have read the README or Wiki, and your question does not appear in other existing issues (including closed ones). Thanks for your cooperation. Now, uncomment the relevant part to describe the situation. -->
+<!-- Note: Please follow the template to open a new issue, otherwise your question will probably be ignored. -->
 
+## 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 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 don't understand what the ReadMe/Wiki says
 <!-- 
-**Don't understand what the README or Wiki says.**
 Point out the parts that are hard for you to understand. 
 -->
 
+
+## I have other questions
 <!-- 
-**Want to complain about my bad days.**
-Don't hesitate to share your story!
--->
-
-<!--
-**Just wanted to say hi to the author.**
-Hi, I'm ..., have a nice day ! 
--->
-
-
-<!-- 
-**Not sure if it's a bug**
-Please try to describe the problem
-
-**To Reproduce**
-
-Steps to reproduce the behavior:
-1. Go to '...'
-2. Click on '....'
-3. Scroll down to '....'
-4. See error
-
-
-**Expected behavior**
-A clear and concise description of what you expected to happen.
-
-**Screenshots**
-If applicable, add screenshots to help explain your problem.
-
-**Desktop (please complete the following information):**
- - OS: [e.g. iOS]
- - Browser: [e.g. chrome, safari]
- - Version: [e.g. 22]
-
-**Smartphone (please complete the following information):**
- - Device: [e.g. iPhone6]
- - OS: [e.g. iOS8.1]
- - Browser: [e.g. stock browser, safari]
- - Version: [e.g. 22]
-
-**Additional context**
-Add any other context about the problem here. 
+Please describe your question.
 -->

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,46 @@
+# Description
+
+<!-- 
+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.
+-->
+
+Fixes #(issue)
+
+
+## Type of change
+
+<!-- 
+Please select the desired item checkbox and change it to "[x]", then delete options that are not relevant.
+-->
+- [ ] Bug fix (non-breaking change which fixes an issue)
+- [ ] New feature (non-breaking change which adds functionality)
+- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
+- [ ] Documentation update
+
+# How Has This Been Tested?
+
+<!-- 
+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/build.sh && bash ./tools/test.sh` (at the root of the project) locally and passed
+- [ ] I have tested this feature in the browser
+
+## Test Configuration
+
+* Browerser type & version:
+* Operating system:
+* Bundler version:
+* Ruby version:
+* Jekyl version:
+
+
+# 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 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

@@ -1,4 +1,4 @@
-name: build
+name: 'Continuous Integration'
 on:
   push:
     branches-ignore:
@@ -7,7 +7,7 @@ on:
       - '*'
     paths-ignore:
       - '.github/**'
-      - '!.github/workflows/**'
+      - '!.github/workflows/ci.yml'
       - '.travis.yml'
       - '.gitignore'
       - 'docs/**'
@@ -29,12 +29,10 @@ jobs:
         with:
           ruby-version: '2.6.x'
 
-      - uses: actions/setup-python@v1
-        with:
-          python-version: '3.7.x'
-
       - name: Checkout
         uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
 
       - name: Bundle Caching
         id: bundle-cache
@@ -45,20 +43,7 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-gems-
 
-      - id: get-pip-cache-path
-        run: |
-          echo "::set-output name=path::`pip show pip | grep "Location" | awk '{print $2}'`"
-
-      - name: Pip caching
-        id: pip-cache
-        uses: actions/cache@v1
-        with:
-          path: ${{ steps.get-pip-cache-path.outputs.path }}
-          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
-          restore-keys: |
-            ${{ runner.os }}-pip-
-
-      - name: Install gnu-coreutils for macOS
+      - name: Install GNU-Coreutils(for macOS)
         if: runner.os == 'macOS'
         run: |
           brew install coreutils
@@ -77,11 +62,6 @@ jobs:
         run: |
           bundle install --local
 
-      - name: Pip installing
-        if: steps.pip-cache.outputs.cache-hit != 'true'
-        run: |
-          pip install -r _scripts/py/requirements.txt
-
       - name: Build Site
         run: |
           bash tools/build.sh

.github/workflows/issues-cleaner.yml

@@ -0,0 +1,24 @@
+name: "Close stale issues"
+on:
+  schedule:
+  - cron: "0 0 * * *"
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+    - env:
+        DAYS_TO_STALE: ${{ 5 }}
+        DAYS_TO_CLOSE: ${{ 2 }}
+      uses: actions/stale@v3
+      with:
+        repo-token: ${{ secrets.GITHUB_TOKEN }}
+        stale-issue-message: 'This issue is stale because it has been open ${{ env.DAYS_TO_STALE }} days with no activity. Remove stale label or comment or this will be closed in ${{ env.DAYS_TO_CLOSE }} days'
+        stale-issue-label: 'stale'
+        exempt-issue-labels: 'pending, in progress'
+        stale-pr-message: 'This PR is stale because it has been open ${{ env.DAYS_TO_STALE }} days with no activity. Remove stale label or comment or this will be closed in ${{ env.DAYS_TO_CLOSE }} days'
+        stale-pr-label: 'stale'
+        exempt-pr-labels: 'pending, in progress'
+        days-before-stale: ${{ env.DAYS_TO_STALE }}
+        days-before-close: ${{ env.DAYS_TO_CLOSE }}
+        # debug-only: true

.travis.yml

@@ -5,11 +5,10 @@ language: ruby
 rvm: 2.6.5
 
 before_install:
-  - pyenv global 3.7.6
+  - bundle config path 'vendor/bundle'
 
 install:
-  - pip install -r _scripts/py/requirements.txt
-  - bundle install --path vendor/bundle --quiet
+  - bundle install --quiet
 
 addons:
   apt:

Gemfile

@@ -12,6 +12,3 @@ end
 group :test do
   gem "html-proofer"
 end
-
-# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
-gem "tzinfo-data", platforms: [:mingw, :mswin, :x64_mingw, :jruby]

README.md

@@ -1,33 +1,18 @@
-# Jekyll Theme Chirpy
+# Chirpy
 
-[![Build Status](https://github.com/cotes2020/jekyll-theme-chirpy/workflows/build/badge.svg?event=push)](https://github.com/cotes2020/jekyll-theme-chirpy/actions?query=event%3Apush)
+🌏 English • [简体中文](docs/README_zh-CN.md)
+
+[![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)
 [![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)
 
-Language: English | [简体中文](docs/README_zh-CN.md)
+A minimal, sidebar, responsive web design Jekyll theme, focusing on text presentation, aim to help you easily record and share your knowledge. [Live Demo »](https://chirpy.cotes.info)
 
-A minimal, portfolio, sidebar, bootstrap Jekyll theme with responsive web design and focuses on text exhibition. It will help you easily record and share your knowledge. 
-
-**Features**
-
-* Auto Dark Mode
-* Posts' Last Modified Date
-* Table of Contents
-* Automatically Recommend Related Posts
-* Syntax highlighting
-* Two Level Categories
-* Search
-* Atom Feeds
-* Disqus Comments
-* Google Analytics
-* GA Pageviews (Advanced)
-* SEO Tag
-* Performance Optimization
-
-[![devices-mockup](https://raw.githubusercontent.com/cotes2020/jekyll-theme-chirpy/master/assets/img/sample/devices-mockup.png)](https://chirpy.cotes.info)
+[![Devices Mockup](https://raw.githubusercontent.com/cotes2020/jekyll-theme-chirpy/master/assets/img/sample/devices-mockup.png)](https://chirpy.cotes.info)
 
 ## Table of Contents
 
+* [Features](#features)
 * [Installing](#installing)
 * [Usage](#usage)
 * [Contributing](#contributing)
@@ -35,14 +20,30 @@ A minimal, portfolio, sidebar, bootstrap Jekyll theme with responsive web design
 * [Support](#support)
 * [License](#license)
 
+## Features
+
+* Pinned Posts
+* Configurable theme mode
+* Double-level Categories
+* Last modified date for posts
+* Table of Contents
+* Automatically recommend related posts
+* Syntax highlighting
+* Mathematical expressions
+* Search
+* Atom Feeds
+* Disqus Comments
+* Google Analytics
+* GA Pageviews reporting (Advanced)
+* SEO and Performance Optimization
 
 ## Installing
 
 ### Prerequisites
 
-Follow the [Jekyll Docs](https://jekyllrb.com/docs/installation/) to complete the installtion of basic environment (`Ruby `, `RubyGems` and `Bundler`). In order to use the script tools to save time, we also need to install [Python](https://www.python.org/downloads/)(version 3.5 or abover) and [ruamel.yaml](https://pypi.org/project/ruamel.yaml/).
+Follow the [Jekyll Docs](https://jekyllrb.com/docs/installation/) to complete the installation of basic environment (`Ruby`, `RubyGems` and `Bundler`). 
 
-In addition, if your machine is running Debian or macOS, make sure the [GNU coreutils](https://www.gnu.org/software/coreutils/) is installed. Otherwise, get it by:
+To improve the writing experience, we need to use some script tools. If your machine is running Debian or macOS, make sure that [GNU coreutils](https://www.gnu.org/software/coreutils/) is installed. Otherwise, install by:
 
 * Debian
 
@@ -62,12 +63,12 @@ $ brew install coreutils
 [Fork **Chirpy** from GitHub](https://github.com/cotes2020/jekyll-theme-chirpy/fork), then clone your forked repo to local:
 
 ```console
-$ git clone git@github.com:USER/jekyll-theme-chirpy.git
+$ git clone git@github.com:USER/jekyll-theme-chirpy.git -b master
 ```
 
-replace the `USER` above to your GitHub username.
+and replace the `USER` above to your GitHub username.
 
-The first time you run or build the project on your machine, perform the installation of Jekyll plugins. Go to the root of repo and run:
+The first time you run or build the project on local machine, perform the installation of Jekyll plugins. Go to the root of repo and run:
 
 ```terminal
 $ bundle install
@@ -116,9 +117,9 @@ As mentioned above, some files or directories should be removed from your repo:
 - .github
 
 
-### Customization
+### Configuration
 
-Basically, go to `_config.yml` and customize the variables as needed, some of them are typical options:
+Generally, go to `_config.yml` and configure the variables as needed. Some of them are typical options:
 
 * `url`
 	
@@ -127,7 +128,7 @@ Basically, go to `_config.yml` and customize the variables as needed, some of th
 
 * `avatar`
     
-    It defines the image file location of avatar. The sample image is `/assets/img/sample/avatar.jpg`, and should be replaced by your own one(a square image). Notice that a huge image file will increase the load time of your site, so keep your avatar image size as samll as possible(may be *<https://tinypng.com/>* will help).
+    It defines the image file location of avatar. The sample image is `/assets/img/sample/avatar.jpg`, and should be replaced by your own one(a square image). Notice that a huge image file will increase the load time of your site, so keep your avatar image size as small as possible(may be *<https://tinypng.com/>* will help).
 
 * `timezone`
 
@@ -145,19 +146,19 @@ Basically, go to `_config.yml` and customize the variables as needed, some of th
 
 ###  Run Locally
 
-You may want to preview the site before publishing, so just run the script tool:
+You may want to preview the site content before publishing, so just run the script tool:
 
 ```terminal
 $ bash tools/run.sh
 ```
 
-Open a modern brower and visit at <http://localhost:4000>.
+Open a modern browser and visit at <http://localhost:4000>.
 
 Few days later, you may find that the file modification(e.g. edits to a post) does not refresh in real time by using `run.sh`. Don't worry, the advanced option `-r` (or `--realtime`) will solve this problem, but it requires [**fswatch**](http://emcrisostomo.github.io/fswatch/) to be installed on your machine. Type `-h` for more information.
 
 ###  Deploying to GitHub Pages
 
-Before the deployment begins, ensure the `url` in file `_config.yml` has been set to `https://<username>.github.io`(or the custom domain, if you have. e.g. `https://yourdomain.com`). What's more, if you prefer to the [Project site](https://help.github.com/en/github/working-with-github-pages/about-github-pages#types-of-github-pages-sites), change `baseurl` of file `_config.yml` to your project name, starting with a slash. e.g. `/project`.
+Before the deployment begins, checkout the file `_config.yml` and make sure that the `url` has been configured. What's more, if you prefer the [Project site on GitHub](https://help.github.com/en/github/working-with-github-pages/about-github-pages#types-of-github-pages-sites) and also use the default domain `<username>.github.io`, remember to change the `baseurl` to your project name that starting with a slash. For example, `/project`.
 
 #### Option 1: Built by GitHub Pages
 
@@ -170,29 +171,26 @@ By deploying the site in this way, you're allowed to push the source code direct
 |Site Type | Repo's Name|
 |:---|:---|
 |User or Organization | `<username>.github.io`|
-|Project| any one except `<username>.github.io`, let's say `project`|
+|Project| Any one except `<username>.github.io`, let's say `project`|
 
-**2**. Commit the changes of the repo first, then run the initialization script:
+**2**. Commit the changes of the repo first, then run the publish script:
 
-```terminal
-$ bash tools/init.sh
+```console
+$ bash tools/publish.sh
 ```
 
->**Note**: The *Recent Update* requires the posts' latest git-log date, so make sure the changes in `_posts` have been committed before running this command.
+> Please note that the *Recent Update* list requires the latest git-log date of posts, thus make sure the changes in `_posts` have been committed before running this command.
 
-it will automatically generates the *Latest Modified Date* and *Categories / Tags* page for the posts and submit a commit. Its output is similar to the following log:
+it will automatically generates the *Latest Modified Date* and *Categories / Tags* page for the posts and submit a commit, and then push to `origin/master`. Its output is similar to the following log:
 
 ```terminal
 [INFO] Success to update lastmod for 4 post(s).
 [INFO] Succeed! 3 category-pages created.
 [INFO] Succeed! 4 tag-pages created.
-[Automation] Updated the Categories, Tags, Lastmod for post(s).
- 11 files changed, 46 insertions(+), 3 deletions(-)
- ...
-Updated the Categories, Tags, Lastmod for post(s).
+[INFO] Published successfully!
 ```
 
-**3**. Push the changes to `origin/master` then go to GitHub website and enable GitHub Pages service for the repo.
+**3**. Go to GitHub website and enable GitHub Pages service for the repo.
 
 **4**. Check it out:
 
@@ -211,7 +209,7 @@ For security reasons, GitHub Pages runs on `safe` mode, which means the third-pa
 |Site Type | Repo's Name|
 |:---|:---|
 |User or Organization | `<username>.github.io`|
-|Project| any one except `<username>.github.io`, let's say `project`|
+|Project| Any one except `<username>.github.io`, let's say `project`|
 
 and clone it.
 
@@ -232,7 +230,10 @@ The generated static files will be placed in the root of `/path/to/local/project
 |User or Organization | `https://<username>.github.io/`|
 |Project| `https://<username>.github.io/project/`|
 
-and enjoy!
+#### Finishing work
+
+No matter which way you choose to deploy the website on GitHub, please enforce the `HTTPS` for it. See official docs: [Securing your GitHub Pages site with HTTPS](https://help.github.com/en/github/working-with-github-pages/securing-your-github-pages-site-with-https).
+
 
 ### Documentation
 
@@ -240,7 +241,7 @@ For more details and the better reading experience, please check out the [tutori
 
 ## Contributing
 
-The old saying: "Two heads are better than one. Five heads are better than two." So, welcome to report bugs, improve code quality or submit a new feature. For more information, see [contributing guidelines](.github/CONTRIBUTING.md).
+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).
 
 
 ## Credits

_config.yml

@@ -45,18 +45,18 @@ google_site_verification: google_meta_tag_verification # change to your verifica
 
 #--------------------------
 
-# if your site type is Project Pages site, change below value to '/projectname'
+
+# Only if your site type is GitHub Project sites and doesn't have a custom domain,
+# change below value to '/projectname'.
 baseurl: ''
 
 # Change to your timezone › http://www.timezoneconverter.com/cgi-bin/findzone/findzone
 timezone: Asia/Shanghai
 
 google_analytics:
-  # Fill with your Google Analytics ID
-  id: ''
-  # The Google Analytics pageviews switch.
-
+  id: ''          # Fill with your Google Analytics ID
   pv:
+    # The Google Analytics pageviews switch.
     # DO NOT enable it unless you know how to deploy the Google Analytics superProxy.
     enabled: false
     # the next options only valid when `google_analytics.pv` is enabled.
@@ -101,6 +101,8 @@ kramdown:
       line_numbers: true
       start_line: 1
 
+# DO NOT change this unless you're a Pro user on Jekyll and Web development,
+# or you think you're smart enough to change other relevant URLs within this template.
 permalink: /posts/:title/
 
 defaults:
@@ -158,11 +160,6 @@ defaults:
         -
           label: Home
           url: /
-  -
-    scope:
-      path: assets/data
-    values:
-      layout: compress
 
 
 sass:
@@ -181,11 +178,13 @@ compress_html:
     envs: []
 
 exclude:
-  - vendor        # Avoid Jekyll mistakenly read the vender directory on Travis-CI's VM .
+  - vendor        # Avoid Jekyll mistakenly read the vendor directory on Travis-CI's VM .
   - Gemfile.lock
   - Gemfile
   - tools
   - docs
+  - README.md
+  - LICENSE
 
 sitemap_exclude:  # Sitemap will exclude the following items.
   fuzzy:

_data/contact.yml

@@ -0,0 +1,31 @@
+#  The contact options.
+#  v2.3
+#  https://github.com/cotes2020/jekyll-theme-chirpy
+#  © 2020 Cotes Chung
+#  MIT Licensed
+
+-
+  type: github
+  icon: 'fab fa-github-alt'
+-
+  type: twitter
+  icon: 'fab fa-twitter'
+-
+  type: email
+  icon: 'fas fa-envelope'
+  noblank: true            # open link in current tab
+-
+  type: rss
+  icon: 'fas fa-rss'
+  noblank: true
+
+# Uncomment and complete the url below to enable more contact options
+# -
+#   icon: 'fab fa-mastodon'   # icons powered by <https://fontawesome.com/>
+#   url:  ''                  # Fill with your mastodon account page
+# -
+#   icon: 'fab fa-linkedin'   # icons powered by <https://fontawesome.com/>
+#   url:  ''                  # Fill with your Linkedin homepage
+# -
+#   icon: 'fab fa-stack-overflow'
+#   url:  ''                  # Fill with your stackoverflow homepage

_data/rights.yml

@@ -7,15 +7,11 @@
 
 
 license:
-  link: "https://creativecommons.org/licenses/by/4.0/"
-  prompt: This post is licensed under
   name: CC BY 4.0
-  icons:
-    - "fab fa-creative-commons"
-    - "fab fa-creative-commons-by"
+  link: "https://creativecommons.org/licenses/by/4.0/"
 
 brief: Some rights reserved.
 
 verbose: >-
-  The blog posts on this site are licensed
-  under the Creative Commons Attribution 4.0 International (CC BY 4.0) License.
+  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

@@ -24,6 +24,11 @@ platforms:
 
   # Uncomment below if you need to.
   # -
+  #   type: Linkedin
+  #   icon: "fab fa-linkedin"
+  #   link: "https://www.linkedin.com/sharing/share-offsite/?url=URL"
+  #
+  # -
   #   type: Weibo
   #   icon: "fab fa-weibo"
   #   link: "http://service.weibo.com/share/share.php?title=TITLE&url=URL"

_includes/css-selector.html

@@ -0,0 +1,54 @@
+<!--
+  CSS selector for site.
+  Chirpy v2.3
+  https://github.com/cotes2020/jekyll-theme-chirpy
+  © 2020 Cotes Chung
+  MIT Licensed
+-->
+
+{% if page.layout == 'home' %}
+  <link rel="preload" href="{{ '/assets/css/home.css' | relative_url }}" as="style">
+  <link rel="stylesheet" href="{{ '/assets/css/home.css' | relative_url }}">
+
+{% elsif page.layout == 'page' %}
+
+  {% if page.type == 'categories' %}
+
+    <link rel="preload" href="{{ '/assets/css/categories.css' | relative_url }}" as="style">
+    <link rel="stylesheet" href="{{ '/assets/css/categories.css' | relative_url }}">
+
+  {% elsif page.type == 'tags' %}
+
+    <link rel="preload" href="{{ '/assets/css/tags.css' | relative_url }}" as="style">
+    <link rel="stylesheet" href="{{ '/assets/css/tags.css' | relative_url }}">
+
+  {% elsif page.type == 'archives' %}
+
+    <link rel="preload" href="{{ '/assets/css/archives.css' | relative_url }}" as="style">
+    <link rel="stylesheet" href="{{ '/assets/css/archives.css' | relative_url }}">
+
+  {% else %}
+
+    <link rel="preload" href="{{ '/assets/css/page.css' | relative_url }}" as="style">
+    <link rel="stylesheet" href="{{ '/assets/css/page.css' | relative_url }}">
+
+  {% endif %}
+
+{% elsif page.layout == 'category' or page.layout == 'tag' %}
+
+  <link rel="preload" href="{{ '/assets/css/category-tag.css' | relative_url }}" as="style">
+  <link rel="stylesheet" href="{{ '/assets/css/category-tag.css' | relative_url }}">
+
+{% elsif page.layout == 'post' %}
+
+  <link rel="preload" as="style" href="{{ '/assets/css/post.css' | relative_url }}">
+  <link rel="stylesheet" href="{{ '/assets/css/post.css' | relative_url }}">
+
+  {% if site.toc and page.toc %}
+
+    <link rel="preload" as="style" href="{{ '/assets/css/lib/bootstrap-toc.min.css' | relative_url }}">
+    <link rel="stylesheet" href="{{ '/assets/css/lib/bootstrap-toc.min.css' | relative_url }}" />
+
+  {% endif %}
+
+{% endif %}

_includes/disqus.html

@@ -8,10 +8,10 @@
 -->
 
 <div id="disqus" class="pt-2 pb-4">
-  <p class="font-italic text-muted small">Comments powered by <a href="https://disqus.com/">Disqus</a>.</p>
+  <p class="font-italic text-center text-muted small">Comments powered by <a href="https://disqus.com/">Disqus</a>.</p>
 </div>
 
-<script src="{{ site.baseurl }}/assets/lib/jquery.disqusloader.min.js"></script>
+<script src="{{ site.baseurl }}/assets/js/lib/jquery.disqusloader.min.js"></script>
 <script>
   var options = {
     scriptUrl: '//{{ site.disqus.shortname }}.disqus.com/embed.js',

_includes/footer.html

@@ -12,9 +12,9 @@
       <p class="mb-0">
         © {{ 'now' | date: "%Y" }}
         <a href="{{ site.social.links[0] }}">{{ site.social.name }}</a>.
-        {% if site.data.right.brief %}
+        {% if site.data.rights.brief %}
         <span data-toggle="tooltip" data-placement="top"
-          title="{{ site.data.right.verbose }}">{{ site.data.right.brief }}</span>
+          title="{{ site.data.rights.verbose }}">{{ site.data.rights.brief }}</span>
         {% endif %}
       </p>
     </div>
@@ -23,8 +23,9 @@
       <p class="mb-0">
         Powered by
         <a href="https://jekyllrb.com" target="_blank">Jekyll</a>
-        with theme
-        <a href="https://github.com/cotes2020/jekyll-theme-chirpy/">Chirpy</a>.
+        with
+        <a href="https://github.com/cotes2020/jekyll-theme-chirpy/">Chirpy</a>
+        theme.
       </p>
     </div>
 

_includes/head.html

@@ -11,22 +11,21 @@
   <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
 
   <title>
-  {%- if page.layout == "home" -%}
-    {{- site.title -}}
-  {%- else -%}
-    {{ page.title }} | {{ site.title }}
-  {%- endif -%}
+  {%- unless page.layout == "home" -%}
+    {{ page.title | append: " | "}}
+  {%- endunless -%}
+    {{ site.title }}
   </title>
 
   {% seo title=false %}
 
   {% include favicons.html %}
 
-  <!-- google fonts -->
+  <!-- Google Fonts -->
   <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin="anonymous">
   <link rel="dns-prefetch" href="https://fonts.gstatic.com">
 
-  <!-- ga -->
+  <!-- GA -->
   {% if jekyll.environment == 'production' %}
     <link rel="preconnect" href="https://www.google-analytics.com" crossorigin="use-credentials">
     <link rel="dns-prefetch" href="https://www.google-analytics.com">
@@ -40,114 +39,37 @@
     {% endif %}
   {% endif %}
 
-  <!-- jsdelivr CDN -->
+  <!-- jsDelivr CDN -->
   <link rel="preconnect" href="cdn.jsdelivr.net">
   <link rel="dns-prefetch" href="cdn.jsdelivr.net">
 
+  <!-- Bootstrap -->
   <link rel="preload" as="style"
     href="https://cdn.jsdelivr.net/npm/bootstrap@4.0.0/dist/css/bootstrap.min.css"
     integrity="sha256-LA89z+k9fjgMKQ/kq4OO2Mrf8VltYml/VES+Rg0fh20=" crossorigin>
 
-  <link rel="preload" as="style"
-    href="https://cdn.jsdelivr.net/npm/@fortawesome/fontawesome-free@5.11.2/css/all.min.css"
-    integrity="sha256-+N4/V/SbAFiW1MPBCXnfnP9QSN3+Keu+NlB+0ev/YKQ="
-    crossorigin="anonymous">
-
-  <link rel="preload" as="style" href="{{ site.baseurl }}/assets/css/main.css">
-
   <link rel="stylesheet"
     href="https://cdn.jsdelivr.net/npm/bootstrap@4.0.0/dist/css/bootstrap.min.css"
     integrity="sha256-LA89z+k9fjgMKQ/kq4OO2Mrf8VltYml/VES+Rg0fh20=" crossorigin="anonymous">
 
+  <!-- Font Awesome -->
   <link rel="stylesheet"
     href="https://cdn.jsdelivr.net/npm/@fortawesome/fontawesome-free@5.11.2/css/all.min.css"
     integrity="sha256-+N4/V/SbAFiW1MPBCXnfnP9QSN3+Keu+NlB+0ev/YKQ="
     crossorigin="anonymous">
 
-  <link rel="stylesheet" href="{{ site.baseurl }}/assets/css/main.css">
+  {% include css-selector.html %}
 
-  {% if page.layout == 'home' %}
-    <link rel="preload" href="{{ site.baseurl }}/assets/css/home.css" as="style">
-    <link rel="stylesheet" href="{{ site.baseurl }}/assets/css/home.css">
-  {% endif %}
+  <!-- JavaScripts -->
 
-  {% if page.title == 'Categories' and page.layout == 'page' %}
-    <link rel="preload" href="{{ site.baseurl }}/assets/css/categories.css" as="style">
-    <link rel="stylesheet" href="{{ site.baseurl }}/assets/css/categories.css">
-  {% endif %}
-
-  {% if page.title == 'Tags' and page.layout == 'page' %}
-    <link rel="preload" href="{{ site.baseurl }}/assets/css/tags.css" as="style">
-    <link rel="stylesheet" href="{{ site.baseurl }}/assets/css/tags.css">
-  {% endif %}
-
-  {% if page.layout == 'category' or page.layout == 'tag' %}
-    <link rel="preload" href="{{ site.baseurl }}/assets/css/category-tag.css" as="style">
-    <link rel="stylesheet" href="{{ site.baseurl }}/assets/css/category-tag.css">
-  {% endif %}
-
-  {% if page.title == 'Archives' and page.layout == 'page' %}
-    <link rel="preload" href="{{ site.baseurl }}/assets/css/archives.css" as="style">
-    <link rel="stylesheet" href="{{ site.baseurl }}/assets/css/archives.css">
-  {% endif %}
-
-  {% if page.title == 'About' and page.layout == 'page' %}
-    <link rel="preload" href="{{ site.baseurl }}/assets/css/syntax.css" as="style">
-    <link rel="stylesheet" href="{{ site.baseurl }}/assets/css/syntax.css">
-  {% endif %}
-
-  <!-- jquery -->
-  <link rel="preload" as="script"
-    href="https://cdn.jsdelivr.net/npm/jquery@3.4.1/dist/jquery.min.js"
+  <link rel="preload" as="script" href="https://cdn.jsdelivr.net/npm/jquery@3.4.1"
     integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous">
 
-  <!-- popper -->
-  <link rel="preload" as="script"
-    href="https://cdn.jsdelivr.net/npm/popper.js@1.15.0/dist/umd/popper.min.js"
-    integrity="sha256-fTuUgtT7O2rqoImwjrhDgbXTKUwyxxujIMRIK7TbuNU=" crossorigin>
-
-  <script src="https://cdn.jsdelivr.net/npm/jquery@3.4.1/dist/jquery.min.js"
+  <script src="https://cdn.jsdelivr.net/npm/jquery@3.4.1"
     integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script>
 
-  <script>
-    window.jQuery || document.write('<script src="{{ site.baseurl }}/assets/lib/jquery-3.4.1.min.js"><\/script>');
-  </script>
+  <script src="https://cdn.jsdelivr.net/combine/npm/popper.js@1.15.0,npm/bootstrap@4.0.0/dist/js/bootstrap.min.js" async></script>
 
-  <script src="https://cdn.jsdelivr.net/npm/popper.js@1.15.0/dist/umd/popper.min.js"
-    integrity="sha256-fTuUgtT7O2rqoImwjrhDgbXTKUwyxxujIMRIK7TbuNU=" crossorigin="anonymous"></script>
-
-  <script src="https://cdn.jsdelivr.net/npm/bootstrap@4.0.0/dist/js/bootstrap.min.js"
-    integrity="sha256-5+02zu5UULQkO7w1GIr6vftCgMfFdZcAHeDtFnKZsBs=" crossorigin="anonymous" async></script>
-
-  <script src="{{ site.baseurl }}/assets/js/dist/commons.js" async></script>
-
-  {% if page.layout == 'home' or page.layout == 'post' %}
-    <script src="{{ site.baseurl }}/assets/js/dist/timeago.min.js" async></script>
-    {% if site.google_analytics.pv.enabled %}
-      <script src="{{ site.baseurl }}/assets/data/pv-data.json"></script>
-      <script src="{{ site.baseurl }}/assets/lib/countUp.min.js" async></script>
-      <script src="{{ site.baseurl }}/assets/js/dist/pageviews.min.js" async></script>
-    {% endif %}
-  {% endif %}
-
-  {% if page.layout == 'post' %}
-    <link rel="preload" as="style" href="{{ site.baseurl }}/assets/css/post.css">
-    <link rel="preload" as="style" href="{{ site.baseurl }}/assets/css/syntax.css">
-
-    <link rel="stylesheet" href="{{ site.baseurl }}/assets/css/post.css">
-    <link rel="stylesheet" href="{{ site.baseurl }}/assets/css/syntax.css">
-
-    {% if site.toc and page.toc %}
-      <link rel="preload" as="style" href="{{ site.baseurl }}/assets/lib/bootstrap-toc-1.0.1/bootstrap-toc.min.css">
-      <link rel="preload" as="script" href="{{ site.baseurl }}/assets/lib/bootstrap-toc-1.0.1/bootstrap-toc.min.js">
-
-      <link rel="stylesheet" href="{{ site.baseurl }}/assets/lib/bootstrap-toc-1.0.1/bootstrap-toc.min.css" />
-      <script src="{{ site.baseurl }}/assets/lib/bootstrap-toc-1.0.1/bootstrap-toc.min.js" async></script>
-      <script src="{{ site.baseurl }}/assets/js/dist/toc.min.js" async></script>
-    {% endif %}
-
-  {% endif %}
-
-  <script src="{{ site.baseurl }}/assets/js/dist/tooltip-loader.min.js" async></script>
+  {% include js-selector.html %}
 
 </head>

_includes/js-selector.html

@@ -0,0 +1,49 @@
+<!--
+  JS selector for site.
+  Chirpy v2.3
+  https://github.com/cotes2020/jekyll-theme-chirpy
+  © 2020 Cotes Chung
+  MIT Licensed
+-->
+
+{% if page.layout == 'home' %}
+
+  {% if site.google_analytics.pv.cache and site.google_analytics.pv.enabled %}
+    <script src="{{ '/assets/js/data/pv-cache.js' | relative_url }}"></script>
+  {% endif %}
+
+  <script src="{{ '/assets/js/home.min.js' | relative_url }}" async></script>
+
+{% elsif page.layout == 'post' %}
+
+  {% if site.google_analytics.pv.cache and site.google_analytics.pv.enabled %}
+    <script src="{{ '/assets/js/data/pv-cache.js' | relative_url }}"></script>
+  {% endif %}
+
+  <script src="{{ '/assets/js/post.min.js' | relative_url }}" async></script>
+
+  {% if page.math %}
+    <!-- MathJax -->
+    <script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+    <script src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js" async></script>
+  {% endif %}
+
+{% elsif page.layout == 'page' %}
+
+  {% if page.type == 'categories' %}
+    <script src="{{ '/assets/js/categories.min.js' | relative_url }}" async></script>
+  {% else %}
+    <script src="{{ '/assets/js/page.min.js' | relative_url }}" async></script>
+  {% endif %}
+
+{% else %}
+
+  <script src="{{ '/assets/js/page.min.js' | relative_url }}" async></script>
+
+{% endif %}
+
+
+<!-- PWA -->
+{% if jekyll.environment == 'production' %}
+  <script src="{{ '/app.js' | relative_url }}" defer></script>
+{% endif %}

_includes/lozad.html

@@ -1,7 +1,8 @@
-<!-- image lazy load -->
+<!-- image lazy load: https://github.com/ApoorvSaxena/lozad.js -->
 <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/lozad/dist/lozad.min.js"></script>
 
 <script type="text/javascript">
-  const observer = lozad();
+  const imgs = document.querySelectorAll('#post-wrapper img');
+  const observer = lozad(imgs);
   observer.observe();
 </script>

_includes/mode-toggle.html

@@ -7,8 +7,8 @@
   MIT License
 -->
 
-<i class="mode-toggle fas fa-sun" light-mode-invisible></i>
-<i class="mode-toggle fas fa-moon" dark-mode-invisible></i>
+<i class="mode-toggle fas fa-sun" dark-mode-invisible></i>
+<i class="mode-toggle fas fa-moon" light-mode-invisible></i>
 
 <script type="text/javascript">
 

_includes/no-linenos.html

@@ -0,0 +1,12 @@
+{% comment %}
+  Remove line numbers from code snippets.
+  v2.2
+  https://github.com/cotes2020/jekyll-theme-chirpy
+  © 2020 Cotes Chung
+  Published under the MIT License
+{% endcomment %}
+
+{% if _content contains '<td class="rouge-gutter gl"><pre class="lineno">' %}
+  {% assign _content = _content | replace: '<td class="rouge-gutter gl"><pre class="lineno">', '<!-- <td class="rouge-gutter gl"><pre class="lineno">'%}
+  {% assign _content = _content | replace: '</td><td class="rouge-code">', '</td> --><td class="rouge-code">' %}
+{% endif %}

_includes/panel.html

@@ -6,58 +6,66 @@
   MIT License
 -->
 
-<div id="panel-wrapper" class="col-xl-3 pl-2 topbar-down">
+<div id="panel-wrapper" class="col-xl-3 pl-2 text-muted topbar-down">
 
   <div class="access">
-  {% assign lastmod_list = "" | split: "" %}
-  {% assign index = 0 %}
 
-  {% for post in site.posts %}
-    {% if post.seo.date_modified > post.date and post.seo.date_modified != nil %}
-      {% capture item %}
-        {{ post.seo.date_modified }}::{{ index }}
-      {% endcapture %}
-      {% assign lastmod_list = lastmod_list | push: item %}
-    {% endif %}
-    {% assign index = index | plus: 1 %}
-  {% endfor %}
+  {% if site.data.updates %}
+
+    {% include update-list.html %}
+
+    {% if update_list.size > 0 %}
 
-  {% if lastmod_list.size > 0 %}
     <div id="access-lastmod" class="post">
       <h3 data-toc-skip>
         {{- site.data.label.panel.lastmod -}}
       </h3>
       <ul class="post-content pl-0 pb-1 ml-1 mt-2">
-    {% assign MAX_SIZE = 5 %}
-    {% assign sum = 0 %}
-    {% assign lastmod_list = lastmod_list | sort | reverse %}
-    {% for item in lastmod_list %}
-      {% assign index = item | split: "::" | last | plus: 0 %}
-      {% assign post = site.posts[index] %}
-        <li><a href="{{ post.url | prepend: site.baseurl }}">{{ post.title }}</a></li>
+
+      {% for item in update_list %}
+        {% assign post_url = item | split: "::" | last | prepend: "/posts/" | append: "/" %}
+        {% assign post = site.posts | where: "url", post_url | first %}
+
+        {% if post %}
+          {% assign url = post.url | relative_url %}
+
+          <li><a href="{{ url }}">{{ post.title }}</a></li>
+
           {% assign sum = sum | plus: 1 %}
-      {% if sum >= MAX_SIZE %}
-        {% break %}
-      {% endif %}
-    {% endfor %}
-      </ul>
-    </div><!-- #access-lastmod -->
+          {% if sum >= MAX_SIZE %} {% break %} {% endif %}
+
         {% endif %}
 
+      {% endfor %}
+
+      </ul>
+    </div><!-- #access-lastmod -->
+
+    {% endif %}
+
+  {% endif %} <!-- site.data.updates -->
+
+  {% include trending-tags.html %}
+
+  {% if trending_tags.size > 0 %}
     <div id="access-tags">
       <h3 data-toc-skip>
         {{- site.data.label.panel.trending_tags -}}
       </h3>
       <div class="d-flex flex-wrap mt-3 mb-1 mr-3">
-       {% include trending-tags.html %}
-      </div>
-    </div>
 
+      {% for tag in trending_tags %}
+        {% capture url %}/tags/{{ tag | downcase | url_encode }}/{% endcapture %}
+        <a class="post-tag" href="{{ url | relative_url }}">{{ tag | replace: '-', ' ' }}</a>
+      {% endfor %}
+      </div>
+    </div>
+  {% endif %}
   </div> <!-- .access -->
 
   {% if page.layout == 'post' and site.toc and page.toc %}
   <div id="toc-wrapper" class="pl-0 pr-4 mb-5">
-    <h3 data-toc-skip class="pl-3 pt-2 mb-3">
+    <h3 data-toc-skip class="pl-3 pt-2 mb-2">
       {{- site.data.label.panel.toc -}}
     </h3>
     <nav id="toc" data-toggle="toc"></nav>

_includes/post-sharing.html

@@ -8,7 +8,7 @@
 -->
 
 <div class="share-wrapper">
-  <span class="share-label ml-1 mr-1">{{ site.data.share.label }}</span>
+  <span class="share-label text-muted mr-1">{{ site.data.share.label }}</span>
   <span class="share-icons">
     {% capture title %}{{ page.title }} - {{ site.title }}{% endcapture %}
     {% assign url = page.url | relative_url | prepend: site.url %}

_includes/related-posts.html

@@ -1,21 +1,34 @@
 <!--
- The related posts of current post.
- Placed in the bottom of every single post.
+ Recommend the other 3 posts according to the tags and categories of the current post,
+ if the number is not enough, use the other latest posts to supplement.
+
  v2.0
  https://github.com/cotes2020/jekyll-theme-chirpy
  © 2019 Cotes Chung
  Published under the MIT License
 -->
 
-{% assign MAX_SIZE = 3 %}
+<!-- The total size of related posts  -->
+{% assign TOTAL_SIZE = 3 %}
+
+<!-- An random integer that bigger than 0  -->
 {% assign TAG_SCORE = 1 %}
+
+<!-- Equals to TAG_SCORE / {max_categories_hierarchy}  -->
 {% assign CATEGORY_SCORE = 0.5 %}
 
-{% assign score_list = "" | split: "" %}
-{% assign post_index = 0 %}
+{% assign SEPARATOR = ":" %}
+
+{% assign score_list = "" | split: "" %}
+{% assign last_index = site.posts.size | minus: 1 %}
+
+{% for i in (0..last_index) %}
+  {% assign post = site.posts[i] %}
+
+  {% if post.url == page.url %}
+    {% continue %}
+  {% endif %}
 
-{% for post in site.posts %}
-  {% if post.url != page.url %}
   {% assign score = 0 %}
 
   {% for tag in post.tags %}
@@ -31,23 +44,51 @@
   {% endfor %}
 
   {% if score > 0 %}
-      {% capture score_item %}{{ score }}:{{ post_index }}{% endcapture %}
+    {% capture score_item %}{{ score }}{{ SEPARATOR }}{{ i }}{% endcapture %}
     {% assign score_list = score_list | push: score_item %}
   {% endif %}
 
-  {% endif %}
-  {% assign post_index = post_index | plus: 1 %}
 {% endfor %}
 
+
+{% assign index_list = "" | split: "" %}
+
 {% if score_list.size > 0 %}
   {% assign score_list = score_list | sort | reverse %}
-  {% assign count = 0 %}
+  {% for entry in score_list limit: TOTAL_SIZE %}
+    {% assign index = entry | split: SEPARATOR | last %}
+    {% assign index_list = index_list | push: index %}
+  {% endfor %}
+{% endif %}
+
+<!-- Fill with the other newlest posts  -->
+{% 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  %}
+      {% capture cur_index %}{{ i }}{% endcapture %}
+      {% unless index_list contains cur_index %}
+        {% assign index_list = index_list | push: cur_index %}
+        {% assign less = less | minus: 1 %}
+        {% if less <= 0 %}
+          {% break %}
+        {% endif %}
+      {% endunless %}
+    {% endif %}
+  {% endfor %}
+
+{% endif %}
+
+
+{% if index_list.size > 0 %}
   <div id="related-posts" class="mt-4 mb-2 mb-sm-4 pb-2">
     <h3 class="pt-2 mt-1 mb-4 ml-1" data-toc-skip>{{ site.data.label.post.relate_posts }}</h3>
     <div class="card-deck mb-4">
-    {% for score_item in score_list %}
-      {% assign data = score_item | split: ":" %}
-      {% assign index = data[1] | plus: 0 %}
+    {% for entry in index_list %}
+      {% assign index = entry | plus: 0 %}
       {% assign post = site.posts[index] %}
       <div class="card">
         <a href="{{ post.url | relative_url }}">
@@ -58,16 +99,14 @@
             </span>
             <h3 class="pt-0 mt-1 mb-3" data-toc-skip>{{ post.title }}</h3>
             <div class="text-muted small">
-              <p>{{ post.content | markdownify | strip_html | truncate: 200 | replace: '&', '&amp;' }}</p>
+              {% assign content = post.content %}
+              {% include no-linenos.html %}
+              <p>{{ content | markdownify | strip_html | truncate: 200 | replace: '&', '&amp;' }}</p>
             </div>
           </div>
         </a>
       </div>
-      {% assign count = count | plus: 1 %}
-      {% if count >= MAX_SIZE %}
-        {% break %}
-      {% endif %}
     {% endfor %}
     </div> <!-- .card-deck -->
-  </div>
+  </div> <!-- #related-posts -->
 {% endif %}

_includes/search-loader.html

@@ -5,7 +5,6 @@
   © 2017-2019 Cotes Chung
   MIT License
 -->
-<script src="https://cdn.jsdelivr.net/npm/simple-jekyll-search@1.7.3/dest/simple-jekyll-search.min.js" integrity="sha256-qcLR00zq6pJk4je3MLgAri8Nn+ZumUlXgTKR2H/xCY0=" crossorigin="anonymous"></script>
 
 {% 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">
@@ -20,11 +19,13 @@
 
 {% capture not_found %}<p class="mt-5">Oops! No result founds.</p>{% endcapture %}
 
+<script src="https://cdn.jsdelivr.net/npm/simple-jekyll-search@1.7.3/dest/simple-jekyll-search.min.js"></script>
+
 <script>
 SimpleJekyllSearch({
   searchInput: document.getElementById('search-input'),
   resultsContainer: document.getElementById('search-results'),
-  json: '{{ site.baseurl }}/assets/data/search.json',
+  json: '{{ site.baseurl }}/assets/js/data/search.json',
   searchResultTemplate: '{{ result_elem | strip_newlines }}',
   noResultsText: '{{ not_found }}'
 });

_includes/search-results.html

@@ -8,8 +8,12 @@
 <div id="search-result-wrapper" class="d-flex justify-content-center unloaded">
   <div class="col-12 col-xl-11 post-content">
     <div id="search-hints">
-      <h4 class="text-muted">{{ site.data.label.panel.trending_tags }}</h4>
+      <h4 class="text-muted mb-4">{{ site.data.label.panel.trending_tags }}</h4>
       {% include trending-tags.html %}
+      {% for tag in trending_tags %}
+        {% capture url %}/tags/{{ tag | downcase | 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

@@ -15,15 +15,15 @@
         {% if start == '/' %}
           {% assign avatar_url = avatar_url | prepend: site.baseurl %}
         {% endif %}
-        <img src="{{ avatar_url }}" alt="avatar">
+        <img src="{{ avatar_url }}" alt="avatar" onerror="this.style.display='none'">
       </a>
     </div>
 
     <div class="profile-text mt-3">
-      <div id="site-title">
-        <a href="{{ site.baseurl }}/">{{- site.title -}}</a>
+      <div class="site-title">
+        <a href="{{ '/' | relative_url }}">{{- site.title -}}</a>
       </div>
-      <div id="site-subtitle" class="font-italic">{{- site.tagline -}}</div>
+      <div class="site-subtitle font-italic">{{- site.tagline -}}</div>
     </div>
   </div>
 
@@ -45,7 +45,7 @@
         or item.name == page.tab_active
         or item.name == "Home" and page.layout == "home" %}active{% endif %}">
       <a href="{{ ref }}" class="nav-link d-flex justify-content-center align-items-center w-100">
-        <i class="fa-fw {{ item.icon }} ml-3 mr-3 unloaded"></i>
+        <i class="fa-fw {{ item.icon }} ml-xl-3 mr-xl-3 unloaded"></i>
         <span>{{ item.name | upcase }}</span>
       </a>
     </li> <!-- .nav-item -->
@@ -64,18 +64,27 @@
   <span class="icon-border"></span>
   {% endif %}
 
-  <a href="https://github.com/{{ site.github.username }}" target="_blank">
-    <i class="fab fa-github-alt"></i>
-  </a>
-  <a href="https://twitter.com/{{ site.twitter.username }}" target="_blank">
-    <i class="fab fa-twitter"></i>
-  </a>
+  {% for entry in site.data.contact %}
+    {% capture url %}
+      {%- if entry.type == 'github' -%}
+        https://github.com/{{ site.github.username }}
+      {%- elsif entry.type == 'twitter' -%}
+        https://twitter.com/{{ site.twitter.username }}
+      {%- elsif entry.type == 'email' -%}
         {% assign email = site.social.email | split: '@' %}
-  <a href="javascript:window.open('mailto:' + ['{{ email[0] }}','{{ email[1] }}'].join('@'))">
-    <i class="fas fa-envelope"></i>
-  </a>
-  <a href="{{ site.baseurl }}/feed.xml" target="_blank">
-    <i class="fas fa-rss"></i>
+        javascript:window.open('mailto:' + ['{{ email[0] }}','{{ email[1] }}'].join('@'))
+      {%- elsif entry.type == 'rss' -%}
+        {{ "/feed.xml" | relative_url }}
+      {%- else -%}
+        {{ entry.url }}
+      {%- endif -%}
+    {% endcapture %}
+
+    {% if url != '' %}
+    <a href="{{ url }}" {% unless entry.noblank %}target="_blank"{% endunless %}>
+      <i class="{{ entry.icon }}"></i>
     </a>
+    {% endif %}
+  {% endfor %}
 
 </div>

_includes/trending-tags.html

@@ -1,26 +1,30 @@
-<!--
+{% comment %}
   The trending tags list
   v2.0
   https://github.com/cotes2020/jekyll-theme-chirpy
   © 2019 Cotes Chung
   MIT Licensed
--->
+{% endcomment %}
 
 {% assign MAX = 10 %}
 
 {% capture tags_array %}
   {% for tag in site.tags %}
-    {{ tag[1] | size }}:{{ tag[0] | replace: ' ', '-' }}
+    {{ tag[1] | size }}::{{ tag[0] | replace: ' ', '-' }}
   {% endfor %}
 {% endcapture %}
 
-{% assign trends = tags_array | split: " " | sort | reverse %}
+{% assign all_tags = tags_array | split: " " | sort | reverse %}
 {% assign count = 0 %}
 
-{% for trend in trends %}
+{% assign trending_tags = "" | split: "" %}
+
+{% for iter in all_tags %}
   {% assign count = count | plus: 1 %}
-  {% assign tag = trend | split: ":" | last  %}
-  <a class="post-tag" href="{{ site.baseurl }}/tags/{{ tag | downcase }}/">{{ tag | replace: '-', ' ' }}</a>
+  {% assign tag = iter | split: "::" | last  %}
+
+  {% assign trending_tags = trending_tags | push: tag %}
+
   {% if count >= MAX %}
     {% break %}
   {% endif %}

_includes/update-list.html

@@ -0,0 +1,21 @@
+{% comment %}
+  Get the last 5 posts from lastmod list.
+  v2.2
+  https://github.com/cotes2020/jekyll-theme-chirpy
+  © 2020 Cotes Chung
+  MIT License
+{% endcomment %}
+
+{% assign MAX_SIZE = 5 %}
+{% assign sum = 0 %}
+{% assign update_list = "" | split: "" %}
+
+{% for entry in site.data.updates %}
+  {% capture elem %}
+    {{- entry.lastmod -}}::{{- entry.filename -}}
+  {% endcapture %}
+
+  {% assign update_list = update_list | push: elem %}
+{% endfor %}
+
+{% assign update_list = update_list | sort | reverse %}

_layouts/category.html

@@ -16,7 +16,7 @@ layout: page
   <ul class="post-content pl-0">
     {% for post in site.categories[page.category] %}
     <li class="d-flex justify-content-between pl-md-3 pr-md-3">
-      <a href="{{ post.url | absolute_url }}">{{ post.title }}</a>
+      <a href="{{ post.url | relative_url }}">{{ post.title }}</a>
       <span class="dash flex-grow-1"></span>
       <span class="text-muted small">{{ post.date | date: site.data.date_format.post }}</span>
     </li>

_layouts/default.html

@@ -9,22 +9,31 @@ layout: compress
 
 <!DOCTYPE html>
 
+{% if site.lang %}
+  {% assign lang = site.lang | split: "_" | first %}
+{% else %}
+  {% assign lang = 'en' %}
+{% endif %}
+
 {% capture prefer_mode %}
   {% if site.theme_mode != "dual" %}
     mode="{{ site.theme_mode }}"
   {% endif %}
 {% endcapture %}
 
-<html lang="en" {{ prefer_mode }} >
+<html lang="{{ lang }}" {{ prefer_mode }} >
 
   {% include head.html %}
 
   <body data-spy="scroll" data-target="#toc">
+
     <div id="sidebar" class="d-flex flex-column">
       {% include sidebar.html %}
     </div>
-    <div id="main-wrapper">
+
     {% include topbar.html %}
+
+    <div id="main-wrapper">
       <div id="main">
 
         {% capture _content %}
@@ -37,7 +46,8 @@ layout: compress
         {% include footer.html %}
       </div>
       {% include search-results.html %}
-    </div>
+
+    </div> <!-- #main-wrapper -->
 
     <div id="mask"></div>
 

_layouts/home.html

@@ -7,19 +7,64 @@ layout: page
 # MIT Licensed
 ---
 
+
+{% assign pinned = site.posts | where_exp: "item", "item.pin == true"  %}
+{% assign default = site.posts | where_exp: "item", "item.pin == nil "  %}
+{% assign posts = "" | split: "" %}
+
+<!-- Get pinned posts -->
+
+{% assign offset = paginator.page | minus: 1 | times: paginator.per_page %}
+{% assign pinned_num = pinned.size | minus: offset %}
+
+{% if pinned_num > 0 %}
+  {% for i in (offset..pinned.size) limit: pinned_num %}
+    {% assign posts = posts | push: pinned[i] %}
+  {% endfor %}
+{% else %}
+  {% assign pinned_num = 0 %}
+{% endif %}
+
+
+<!-- Get default posts -->
+
+{% assign default_beg = offset | minus: pinned.size %}
+
+{% if default_beg < 0 %}
+  {% assign default_beg = 0 %}
+{% endif %}
+
+{% assign default_num = paginator.posts | size | minus: pinned_num  %}
+{% assign default_end = default_beg | plus: default_num | minus: 1 %}
+
+{% if default_num > 0 %}
+  {% for i in (default_beg..default_end) %}
+    {% assign posts = posts | push: default[i] %}
+  {% endfor %}
+{% endif %}
+
+
 <div id="post-list">
-  {% for post in paginator.posts %}
+
+{% for post in posts %}
+
   <div class="post-preview">
-    <h1>
-      <a href="{{ site.baseurl }}{{ post.url }}">{{ post.title }}</a>
-    </h1>
+    <div class="d-flex justify-content-between pr-xl-2">
+      <h1><a href="{{ post.url | relative_url }}">{{ post.title }}</a></h1>
+      {% if post.pin %}
+        <i class="fas fa-thumbtack fa-fw text-muted mt-1 ml-2 mt-xl-2" data-toggle="tooltip" data-placement="left"
+        title="Pinned"></i>
+      {% endif %}
+    </div>
     <div class="post-content">
       <p>
-      {{ post.content | strip_html | truncate: 200 | replace: '&', '&amp;' }}
+      {% assign _content = post.content %}
+      {% include no-linenos.html %}
+      {{ _content | markdownify | strip_html | truncate: 200 }}
       </p>
     </div>
 
-    <div class="post-meta text-muted pt-1">
+    <div class="post-meta text-muted">
       <!-- posted date -->
       <i class="far fa-clock fa-fw"></i>
       <span class="timeago" data-toggle="tooltip" data-placement="bottom"
@@ -36,7 +81,9 @@ layout: page
       {% endif %}
     </div>
   </div> <!-- .post-review -->
+
 {% endfor %}
+
 </div> <!-- #post-list -->
 
 {% if paginator.total_pages > 0 %}

_layouts/page.html

@@ -9,7 +9,7 @@ layout: default
 
 <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 pl-xl-3 mb-md-4">
+    <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">

_layouts/post.html

@@ -16,24 +16,48 @@ layout: default
       <h1 data-toc-skip>{{ page.title }}</h1>
 
       <div class="post-meta text-muted d-flex flex-column">
-        <!-- Published Date and Categoreis -->
+        <!-- Published date and author -->
         <div>
+          Posted
           <span class="timeago" data-toggle="tooltip" data-placement="bottom"
            title="{{ page.date | date: site.data.date_format.tooltip }}">
             {{ page.date | date: site.data.date_format.post }}
             <i class="unloaded">{{ page.date | date_to_xmlschema }}</i>
           </span>
-          {% if page.categories.size > 0 %}on{% endif %}
-          {% for category in page.categories %}
-            <a href='{{ site.baseurl }}/categories/{{ category | replace: ' ', '-' | downcase | url_encode }}/'>{{ category }}</a>
-            {%- unless forloop.last -%}, {%- endunless -%}
-          {% endfor %}
+          by
+          <span class="author">
+          {% if page.author %}
+            {{ page.author }}
+          {% else%}
+            {{ site.author }}
+          {% endif %}
+          </span>
         </div>
 
+        <!-- lastmod -->
+        {%- capture filename -%}
+          {{ page.url | split: "/" | last }}
+        {%- endcapture -%}
+
+        {% assign record = site.data.updates | where: "filename", filename | first %}
+
+        {% if record %}
+        <div>
+          Updated
+          <span class="timeago lastmod"
+            data-toggle="tooltip" data-placement="bottom"
+             title="{{ record.lastmod | date: site.data.date_format.tooltip }}">
+            {{ record.lastmod | date: site.data.date_format.post }}
+            <i class="unloaded">{{ record.lastmod | date_to_xmlschema}}</i>
+          </span>
+        </div>
+        {% endif %}
+
         <!-- page views -->
         {% if site.google_analytics.pv.enabled %}
         <div>
-          <span id="pv" class="pageviews"><i class="fas fa-spinner fa-spin fa-fw"></i></span> views
+          <span id="pv" class="pageviews"><i class="fas fa-spinner fa-spin fa-fw"></i></span>
+          views
         </div>
         {% endif %}
 
@@ -43,13 +67,9 @@ layout: default
         {% if page.image %}
           <img src="{{ page.image }}">
         {% endif %}
-        <!-- Add lozad class into image tags. see: <https://github.com/ApoorvSaxena/lozad.js#usage> -->
+        <!-- Using lozad. See: <https://github.com/ApoorvSaxena/lozad.js#usage> -->
         {% if content contains '<img src=' %}
-          {% capture loading %}
-           {{ "/assets/img/commons/loading.png" | relative_url }}
-          {% endcapture %}
-          {% assign replacement = '<img class="lozad" src=' | append: loading | append: ' data-src=' %}
-          {{ content | replace: '<img src=', replacement }}
+          {{ content | replace: '<img src=', '<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src=' }}
         {% else %}
           {{ content }}
         {% endif %}
@@ -57,22 +77,21 @@ layout: default
 
       <div class="post-tail-wrapper text-muted">
 
-        <!-- lastmod -->
-        {% if page.seo.date_modified > page.date %}
-        <div>
-          Updated
-          <span class="timeago lastmod"
-            data-toggle="tooltip" data-placement="top"
-             title="{{ page.seo.date_modified | date: site.data.date_format.tooltip }}">
-            {{ page.seo.date_modified | date: site.data.date_format.post }}
-            <i class="unloaded">{{ page.seo.date_modified | date_to_xmlschema}}</i>
-          </span>
+        <!-- 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 | replace: ' ', '-' | downcase | url_encode }}/'>{{ category }}</a>
+            {%- unless forloop.last -%}, {%- endunless -%}
+          {% endfor %}
         </div>
         {% endif %}
 
-        <!-- Tags -->
+        <!-- tags -->
         {% if page.tags.size > 0 %}
-        <div class="pt-3">
+        <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 | replace: ' ', '-' | downcase | url_encode }}/"
             class="post-tag no-text-decoration" >
@@ -84,18 +103,11 @@ layout: default
 
         <div class="post-tail-bottom
           d-flex justify-content-between align-items-center pt-5 pb-2">
-
-          {% if site.data.right.license %}
+          {% if site.data.rights.license %}
           <div class="license-wrapper">
-            <span class="license-text ml-1 mr-1">
-              {{ site.data.right.license.prompt }}
-              <a href="{{ site.data.right.license.link }}">
-                {{ site.data.right.license.name }}
-                {% for icon in site.data.right.license.icons %}
-                <i class="{{ icon }}"></i>
-                {% endfor %}
-              </a>
-            </span>
+            This post is licensed under
+            <a href="{{ site.data.rights.license.link }}">{{ site.data.rights.license.name }}</a>
+            by the author.
           </div>
           {% endif %}
 

_layouts/tag.html

@@ -16,7 +16,7 @@ layout: page
   <ul class="post-content pl-0">
     {% for post in site.tags[page.tag] %}
     <li class="d-flex justify-content-between pl-md-3 pr-md-3">
-      <a href="{{ post.url | absolute_url }}">{{ post.title }}</a>
+      <a href="{{ post.url | relative_url }}">{{ post.title }}</a>
       <span class="dash flex-grow-1"></span>
       <span class="text-muted small">{{ post.date | date: site.data.date_format.post }}</span>
     </li>

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

@@ -1,11 +1,13 @@
 ---
-title: "Text and Typography"
+title: Text and Typography
+author: Cotes Chung
 date: 2019-08-08 11:33:00 +0800
 categories: [Blogging, Demo]
 tags: [typography]
+math: true
 ---
 
-This Jekyll template totally compatible with Markdown syntax. Now, let's take a look for the text and typography in this theme.
+This Jekyll template totally compatible with Markdown syntax. Now, let's take a look for the text and typography in here.
 
 ## Titles
 
@@ -48,7 +50,7 @@ Fluttering and dancing in the breeze.
 
 ## Link
 
-[http://127.0.0.1:4000](http://127.0.0.1:4000)
+<http://127.0.0.1:4000>
 
 
 ## Footnote
@@ -65,6 +67,15 @@ Click the hook will locate the footnote[^footnote].
 
 This is an example of `Inline Code`.
 
+## Mathematics
+
+The mathematics powered by [**MathJax**](https://www.mathjax.org/):
+
+$$ \sum_{n=1}^\infty 1/n^2 = \frac{\pi^2}{6} $$
+
+When \\(a \ne 0\\), there are two solutions to \\(ax^2 + bx + c = 0\\) and they are
+
+$$ x = {-b \pm \sqrt{b^2-4ac} \over 2a} $$
 
 ## Code Snippet
 

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

@@ -1,5 +1,6 @@
 ---
-title: "Writing a New Post"
+title: Writing a New Post
+author: Cotes Chung
 date: 2019-08-08 14:10:00 +0800
 categories: [Blogging, Tutorial]
 tags: [writing]
@@ -24,11 +25,11 @@ 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.
 
-- **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`.
 
-- **Categories and Tags**
+### 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.
 
@@ -41,16 +42,19 @@ tags: bee
 ```
 
 then we should have two *category* type pages placed in folder `categories` of root and one *tag* type page placed in folder `tags`  of root:
+
 ```terminal
 jekyll-theme-chirpy
 ├── categories
 │   ├── animal.html
-│   └── tutorial.html
-└── tags
-    └── bee.html
+│   └── insect.html
+├── tags
+│   └── bee.html
+...
 ```
     
 and the content of a *category* type page is
+
 ```yaml
 ---
 layout: category
@@ -60,6 +64,7 @@ category: CATEGORY_NAME     # e.g. Insect
 ```
 
 the content of a *tag* type page is
+
 ```yaml
 ---
 layout: tag
@@ -68,20 +73,23 @@ tag: TAG_NAME               # e.g. bee
 ---
 ```
 
-    With the increasing number of posts, the number of categories and tags will increase several times!  If we still manually create these *category*/*tag* type files, it will obviously be a super time-consuming job, and it is very likely to miss some of them(i.e. when you click on the missing `category` or `tag` link from a post or somewhere, it will complain to you '404'). The good news is that we got a lovely script tool `_scripts/py/pages_generator.py` to finish the boring task. Basically we will use it via `tools/init.sh` instead of running it separately. Check out its use case [here]({{ "/posts/getting-started/#option-1-built-by-github-pages" | relative_url }}).
+With the increasing number of posts, the number of categories and tags will increase several times!  If we still manually create these *category*/*tag* type files, it will obviously be a super time-consuming job, and it is very likely to miss some of them(i.e. when you click on the missing `category` or `tag` link from a post or somewhere, it will complain to you '404'). The good news is that we got a lovely script tool `_scripts/sh/create_pages.sh` to finish the boring task. Basically we will use it via `tools/publish.sh` instead of running it separately. Check out its use case [here]({{ "/posts/getting-started/#option-1-built-by-github-pages" | relative_url }}).
 
-- **Last modified date**
+## Last modified date
+    
+The last modified date of a post is obtained according to its latest git commit date, and all the modified date of the posts should be stored in `_data/updates.yml`. For example:
 
-    The last modified date of the posts is recorded as `seo.date_modified`, for example:
 ```yaml
----
-seo:
-    date_modified: 2020-01-04 17:05:41 +0800
----
+-
+  filename: getting-started             # the post filename without date and extension
+  lastmod: 2020-04-13 00:38:56 +0800    # the post last modified date
+-
+  ... 
 ```
 
-    This date is equal to the lastest git-commit date of the post file and can be automatically generated by the tool script `_scripts/py/update_posts_lastmod.py`. Similar to the other script `pages_generator.py` mentioned above, it is also be called from `tools/init.sh`, so it doesn't have to be used separately.
+You can choose to create this file manually, but as you may notice, the better approach is to let it be automatically generated by a tool script. And `_scripts/sh/dump_lastmod.sh` was born for this! Similar to the another script `_scripts/sh/create_pages.sh` mentioned above, it is also be called from `tools/publish.sh`, so it doesn't have to be used separately.
 
+When some posts have been modified since their published date and also the file `_data/updates.yml` was created correctly, a list with the label **Recent Updates** will be displayed in the right panel of the desktop view, which records the five most recently modified articles.
 
 ## Table of Contents
 
@@ -105,6 +113,28 @@ comments: false
 ```
 
 
+## Mathematics
+
+For website performance reasons, the mathematical feature won't be loaded by default. But it can be enabled by:
+
+```yaml
+---
+math: true
+---
+```
+
+
+## Pinned Posts
+
+You can pin one or more posts to the top of the home page, and the fixed posts are sorted in reverse order according to their release date. Enable by:
+
+```yaml
+---
+pin: true
+---
+```
+
+
 ## Code Block
 
 Markdown symbols <code class="highlighter-rouge">```</code> can easily create a code block as following examples.
@@ -128,7 +158,7 @@ items:
       quantity:  4
 ```
 
-#### Liquid codes
+#### Liquid Codes
 
 If you want to display the **Liquid** snippet, surround the liquid code with `{% raw %}{%{% endraw %} raw {%raw%}%}{%endraw%}` and `{% raw %}{%{% endraw %} endraw {%raw%}%}{%endraw%}` .
 
@@ -140,6 +170,8 @@ If you want to display the **Liquid** snippet, surround the liquid code with `{%
 ```
 {% endraw %}
 
+
 ## 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

@@ -1,15 +1,17 @@
 ---
 title: Getting Started
+author: Cotes Chung
 date: 2019-08-09 20:55:00 +0800
 categories: [Blogging, Tutorial]
 tags: [getting started]
+pin: true
 ---
 
-## Preparation
+## Prerequisites
 
-Follow the [Jekyll Docs](https://jekyllrb.com/docs/installation/) to complete the installtion of basic environment (Ruby, RubyGem, Bundler and Jekyll). In order to use the script tools to save time, we also need to install [Python](https://www.python.org/downloads/)(version 3.5 or abover) and [ruamel.yaml](https://pypi.org/project/ruamel.yaml/).
+Follow the [Jekyll Docs](https://jekyllrb.com/docs/installation/) to complete the installation of basic environment (`Ruby`, `RubyGems` and `Bundler`). 
 
-In addition, if your machine is running Debian or macOS, make sure you have the [GNU coreutils](https://www.gnu.org/software/coreutils/) installed. Otherwise, get it by:
+To improve the writing experience, we need to use some script tools. If your machine is running Debian or macOS, make sure that [GNU coreutils](https://www.gnu.org/software/coreutils/) is installed. Otherwise, install by:
 
 * Debian
 
@@ -24,18 +26,26 @@ $ brew install coreutils
 ```
 
 
-## Install Jekyll Plugins
+## Jekyll Plugins
 
-Go to the root of repo and run:
+[Fork **Chirpy** from GitHub](https://github.com/cotes2020/jekyll-theme-chirpy/fork), then clone your forked repo to local:
+
+```console
+$ git clone git@github.com:USER/jekyll-theme-chirpy.git -b master
+```
+
+and replace the `USER` above to your GitHub username.
+
+The first time you run or build the project on local machine, perform the installation of Jekyll plugins. Go to the root of repo and run:
 
 ```terminal
 $ bundle install
 ```
 
-`bundle` will install all the dependent Jekyll Plugins listed in file `Gemfile` automatically.
+`bundle` will automatically install all the dependent Jekyll Plugins that listed in the `Gemfile`.
 
 
-## File Structure
+## Directory Structure
 
 The main files and related brief introductions are listed below.
 
@@ -73,7 +83,7 @@ As mentioned above, some files or directories should be removed from your repo:
 
 ## Configuration
 
-Basically, go to `_config.yml` and customize the variables as needed, some of them are typical options:
+Generally, go to `_config.yml` and configure the variables as needed. Some of them are typical options:
 
 * `url`
     
@@ -82,7 +92,7 @@ Basically, go to `_config.yml` and customize the variables as needed, some of th
 
 * `avatar`
     
-    It defines the image file location of avatar. The sample image is `/assets/img/sample/avatar.jpg`, and should be replaced by your own one(a square image). Notice that a huge image file will increase the load time of your site, so keep your avatar image size as samll as possible(may be *<https://tinypng.com/>* will help).
+    It defines the image file location of avatar. The sample image is `/assets/img/sample/avatar.jpg`, and should be replaced by your own one (a square image). Notice that a huge image file will increase the load time of your site, so keep your avatar image size as small as possible (may be *<https://tinypng.com/>* will help).
 
 * `timezone`
 
@@ -100,19 +110,19 @@ Basically, go to `_config.yml` and customize the variables as needed, some of th
 
 ##  Run Locally
 
-You may want to preview the site before publishing, so just run the script tool:
+You may want to preview the site content before publishing, so just run the script tool:
 
 ```terminal
 $ bash tools/run.sh
 ```
 
-Open a brower and visit <http://localhost:4000>.
+Open a browser and visit <http://localhost:4000>.
 
 Few days later, you may find that the file changes does not refresh in real time by using `run.sh`. Don't worry, the advanced option `-r` (or `--realtime`) will solve this problem, but it requires [**fswatch**](http://emcrisostomo.github.io/fswatch/) to be installed on your machine.
 
 ##  Deploying to GitHub Pages
 
-Before the deployment begins, ensure the `url` in file `_config.yml` has been set to `https://<username>.github.io`(or the custom domain, if you have. e.g. `https://yourdomain.com`). What's more, if you prefer to the [Project site](https://help.github.com/en/github/working-with-github-pages/about-github-pages#types-of-github-pages-sites), change `baseurl` of file `_config.yml` to your project name, starting with a slash. e.g. `/project`.
+Before the deployment begins, checkout the file `_config.yml` and make sure that the `url` has been configured. What's more, if you prefer the [Project site on GitHub](https://help.github.com/en/github/working-with-github-pages/about-github-pages#types-of-github-pages-sites) and also use the default domain `<username>.github.io`, remember to change the `baseurl` to your project name that starting with a slash. For example, `/project`.
 
 
 ### Option 1: Built by GitHub Pages
@@ -126,30 +136,26 @@ By deploying the site in this way, you're allowed to push the source code direct
 |Site Type | Repo's Name|
 |:---|:---|
 |User or Organization | `<username>.github.io`|
-|Project| any one except `<username>.github.io`, let's say `project`|
+|Project| Any one except `<username>.github.io`, let's say `project`|
 
-**2**. Commit the changes of the repo first, then run the initialization script:
+**2**. Commit the changes of the repo first, then run the publish script:
 
 ```console
-$ bash tools/init.sh
+$ bash tools/publish.sh
 ```
 
 > Please note that the *Recent Update* list requires the latest git-log date of posts, thus make sure the changes in `_posts` have been committed before running this command.
 
-it will automatically generates the *Latest Modified Date* and *Categories / Tags* page for the posts and submit a commit. Its output is similar to the following log:
+it will automatically generates the *Latest Modified Date* and *Categories / Tags* page for the posts and submit a commit, and then push to `origin/master`. Its output is similar to the following log:
 
 ```terminal
 [INFO] Success to update lastmod for 4 post(s).
 [INFO] Succeed! 3 category-pages created.
 [INFO] Succeed! 4 tag-pages created.
-[Automation] Updated the Categories, Tags, Lastmod for post(s).
- 11 files changed, 46 insertions(+), 3 deletions(-)
- ...
-Updated the Categories, Tags, Lastmod for post(s).
+[INFO] Published successfully!
 ```
 
-
-**3**. Push the changes to `origin/master` then go to GitHub website and enable GitHub Pages service for the repo.
+**3**. Go to GitHub website and enable GitHub Pages service for the repo.
 
 **4**. Check it out:
 
@@ -168,7 +174,7 @@ For security reasons, GitHub Pages runs on `safe` mode, which means the third-pa
 |Site Type | Repo's Name|
 |:---|:---|
 |User or Organization | `<username>.github.io`|
-|Project| any one except `<username>.github.io`, let's say `project`|
+|Project| Any one except `<username>.github.io`, let's say `project`|
 
 and clone it.
 
@@ -189,4 +195,6 @@ The generated static files will be placed in the root of `/path/to/local/project
 |User or Organization | `https://<username>.github.io/`|
 |Project| `https://<username>.github.io/project/`|
 
-and enjoy!
+### Finishing work
+
+No matter which way you choose to deploy the website on GitHub, please enforce the `HTTPS` for it. See official docs: [Securing your GitHub Pages site with HTTPS](https://help.github.com/en/github/working-with-github-pages/securing-your-github-pages-site-with-https).

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

@@ -1,5 +1,6 @@
 ---
-title: "Customize the Favicon"
+title: Customize the Favicon
+author: Cotes Chung
 date: 2019-08-11 00:34:00 +0800
 categories: [Blogging, Tutorial]
 tags: [favicon]
@@ -8,7 +9,7 @@ toc: false
 
 In [**Chirpy**](https://github.com/cotes2020/jekyll-theme-chirpy/), the image files of [Favicons](https://www.favicon-generator.org/about/) are placed in `assets/img/favicons/`. You may need to replace them with your own. So let's see how to customize these Favicons.
 
-Whit a square image (PNG, JPG or GIF) in hand, open the site [*Favicon & App Icon Generator*](https://www.favicon-generator.org/) and upload your original image.
+With a square image (PNG, JPG or GIF) in hand, open the site [*Favicon & App Icon Generator*](https://www.favicon-generator.org/) and upload your original image.
 
 ![upload-image]({{ "/assets/img/sample/upload-image.png" | relative_url }})
 

_scripts/py/init_all.py

@@ -1,18 +0,0 @@
-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-
-"""
-Automatic invokes all initial scripts for project.
-v2.0
-https://github.com/cotes2020/jekyll-theme-chirpy
-© 2018-2019 Cotes Chung
-Licensed under MIT
-"""
-
-import update_posts_lastmod
-import pages_generator
-
-
-update_posts_lastmod
-
-pages_generator

_scripts/py/pages_generator.py

@@ -1,205 +0,0 @@
-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-
-'''
-Generates HTML pages for Categories and Tags in posts.
-
-Dependencies:
-  - git
-  - ruamel.yaml
-
-v2.0
-https://github.com/cotes2020/jekyll-theme-chirpy
-© 2018-2019 Cotes Chung
-MIT License
-'''
-
-
-import os
-import shutil
-import sys
-import subprocess
-
-from ruamel.yaml import YAML
-from utils.common import get_yaml
-from utils.common import get_makrdown_files
-from utils.common import check_py_version
-
-
-DRAFTS_DIR = '_drafts'
-POSTS_DIR = ['_posts']
-
-CATEGORIES_DIR = 'categories'
-CATEGORY_LAYOUT = 'category'
-
-TAG_DIR = 'tags'
-TAG_LAYOUT = 'tag'
-
-LEVEL = 3  # Tree level for current script file.
-
-
-def help():
-    print("Usage: "
-          "   python pages_generator.py [Option]\n\n"
-          "Options:\n"
-          "   -d, --drafts         Enable drafts\n"
-          "   -v, --verbose        Print verbose logs\n")
-
-
-def get_path(dir):
-    path = os.path.abspath(__file__)
-    count = LEVEL
-    r_index = len(path)
-    while r_index > 0:
-        r_index -= 1
-        if (path[r_index] == '/' or path[r_index] == '\\'):
-            count -= 1
-            if count == 0:
-                return path[:r_index + 1] + dir
-
-
-def get_categories():
-    all_categories = []
-    yaml = YAML()
-
-    for dir in POSTS_DIR:
-        path = get_path(dir)
-        posts = get_makrdown_files(path)
-
-        for file in posts:
-
-            meta = yaml.load(get_yaml(file)[0])
-
-            if 'category' in meta:
-                if type(meta['category']) == list:
-                    err_msg = (
-                        "[Error] File {} 'category' type"
-                        " can not be LIST!").format(file)
-                    raise Exception(err_msg)
-                else:
-                    if meta['category'] not in all_categories:
-                        all_categories.append(meta['category'])
-            else:
-                if 'categories' in meta:
-                    if type(meta['categories']) == str:
-                        error_msg = (
-                            "[Error] File {} 'categories' type"
-                            " can not be STR!").format(file)
-                        raise Exception(error_msg)
-
-                    for ctg in meta['categories']:
-                        if ctg not in all_categories:
-                            all_categories.append(ctg)
-                else:
-                    err_msg = (
-                        "[Error] File:{} at least "
-                        "have one category.").format(file)
-                    print(err_msg)
-
-    return all_categories
-
-
-def generate_category_pages(is_verbose):
-    categories = get_categories()
-
-    if len(categories) <= 0:
-        return
-
-    path = get_path(CATEGORIES_DIR)
-
-    if os.path.exists(path):
-        shutil.rmtree(path)
-
-    os.makedirs(path)
-
-    for category in categories:
-        new_page = path + '/' + category.replace(' ', '-').lower() + '.html'
-        with open(new_page, 'w+', encoding='utf-8') as html:
-            html.write("---\n")
-            html.write("layout: {}\n".format(CATEGORY_LAYOUT))
-            html.write("title: {}\n".format(category))
-            html.write("category: {}\n".format(category))
-            html.write("---")
-
-            if is_verbose:
-                print("[INFO] Created page: " + new_page)
-
-    change = subprocess.getoutput("git status categories -s")
-    if change:
-        print("[INFO] Succeed! {} category-pages created."
-              .format(len(categories)))
-
-
-def get_all_tags():
-    all_tags = []
-    yaml = YAML()
-
-    for dir in POSTS_DIR:
-        path = get_path(dir)
-        posts = get_makrdown_files(path)
-
-        for file in posts:
-            meta = yaml.load(get_yaml(file)[0])
-
-            if 'tags' in meta:
-                for tag in meta['tags']:
-                    if tag not in all_tags:
-                        all_tags.append(tag)
-            else:
-                raise Exception("Didn't find 'tags' in \
-                  post '{}' !".format(file))
-
-    return all_tags
-
-
-def generate_tag_pages(is_verbose):
-    all_tags = get_all_tags()
-
-    if len(all_tags) <= 0:
-        return
-
-    tag_path = get_path(TAG_DIR)
-
-    if os.path.exists(tag_path):
-        shutil.rmtree(tag_path)
-
-    os.makedirs(tag_path)
-
-    for tag in all_tags:
-        tag_page = tag_path + '/' + tag.replace(' ', '-').lower() + '.html'
-        with open(tag_page, 'w+', encoding='utf-8') as html:
-            html.write("---\n")
-            html.write("layout: {}\n".format(TAG_LAYOUT))
-            html.write("title: {}\n".format(tag))
-            html.write("tag: {}\n".format(tag))
-            html.write("---")
-
-            if is_verbose:
-                print("[INFO] Created page: " + tag_page)
-
-    change = subprocess.getoutput("git status tags -s")
-    if change:
-        print("[INFO] Succeed! {} tag-pages created.".format(len(all_tags)))
-
-
-def main():
-    check_py_version()
-
-    is_verbose = False
-
-    if len(sys.argv) > 1:
-        for arg in sys.argv:
-            if arg != sys.argv[0]:
-                if arg == '-d' or arg == '--drafts':
-                    POSTS_DIR.insert(0, DRAFTS_DIR)
-                elif arg == '-v' or arg == '--verbose':
-                    is_verbose = True
-                else:
-                    help()
-                    return
-
-    generate_category_pages(is_verbose)
-    generate_tag_pages(is_verbose)
-
-
-main()

_scripts/py/requirements.txt

@@ -1,2 +0,0 @@
-ruamel.yaml==0.16.5
-ruamel.yaml.clib==0.1.2

_scripts/py/update_posts_lastmod.py

@@ -1,174 +0,0 @@
-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-
-"""
-Update (or create if not existed) field 'seo.date_modified'
-in posts' Front Matter by their latest git commit date.
-
-Dependencies:
-  - git
-  - ruamel.yaml
-
-v2.0
-https://github.com/cotes2020/jekyll-theme-chirpy
-© 2018-2019 Cotes Chung
-Licensed under MIT
-"""
-
-import sys
-import os
-import getopt
-import subprocess
-import shutil
-import datetime
-import time
-
-from enum import Enum
-from ruamel.yaml import YAML
-
-from utils.common import get_yaml
-from utils.common import get_makrdown_files
-from utils.common import check_py_version
-
-
-Date = Enum('Date', ('GIT', 'FS'))
-
-POSTS_PATH = '_posts'
-
-
-def help():
-    print("Usage: "
-          "   python update_posts_lastmod.py [options]\n"
-          "Options:\n"
-          "   -f, --file  <file path>        Read a file.\n"
-          "   -d, --dir   <directory path>   Read from a directory.\n"
-          "   -h, --help                     Print help information\n"
-          "   -v, --verbose                  Print verbose logs\n"
-          "   -t, --datetime  < git | fs >   Chose post's datetime source, "
-          "'git' for git-log, 'fs' for filesystem, default to 'git'.\n")
-
-
-def update_lastmod(posts, verbose, date):
-    count = 0
-    yaml = YAML()
-
-    for post in posts:
-
-        lastmod = ''
-
-        if date == Date.GIT:
-            git_log_count = subprocess.getoutput(
-                "git log --pretty=%ad \"{}\" | wc -l".format(post))
-
-            if git_log_count == "1":
-                continue
-
-            git_lastmod = subprocess.getoutput(
-                "git log -1 --pretty=%ad --date=iso \"{}\"".format(post))
-
-            if not git_lastmod:
-                continue
-
-            lates_commit = subprocess.check_output(
-                ['git', 'log', '-1', '--pretty=%B', post]).decode('utf-8')
-
-            if "[Automation]" in lates_commit and "Lastmod" in lates_commit:
-                continue
-
-            lastmod = git_lastmod
-
-        elif date == Date.FS:
-            t = os.path.getmtime(post)
-            dt = datetime.datetime.fromtimestamp(t)
-            lastmod = dt.strftime('%F %T') + time.strftime(' %z')
-
-        frontmatter, line_num = get_yaml(post)
-        meta = yaml.load(frontmatter)
-
-        if 'seo' in meta:
-            if ('date_modified' in meta['seo'] and
-                    meta['seo']['date_modified'] == lastmod):
-                continue
-            else:
-                meta['seo']['date_modified'] = lastmod
-        else:
-            meta.insert(line_num, 'seo', dict(date_modified=lastmod))
-
-        output = 'new.md'
-        if os.path.isfile(output):
-            os.remove(output)
-
-        with open(output, 'w', encoding='utf-8') as new, \
-                open(post, 'r', encoding='utf-8') as old:
-            new.write("---\n")
-            yaml.dump(meta, new)
-            new.write("---\n")
-            line_num += 2
-
-            lines = old.readlines()
-
-            for line in lines:
-                if line_num > 0:
-                    line_num -= 1
-                    continue
-                else:
-                    new.write(line)
-
-        shutil.move(output, post)
-        count += 1
-
-        if verbose:
-            print("[INFO] update 'lastmod' for:" + post)
-
-    if count > 0:
-        print("[INFO] Success to update lastmod for {} post(s).".format(count))
-
-
-def main(argv):
-    check_py_version()
-
-    specific = False
-    posts = []
-    verbose = False
-    date = Date.GIT
-
-    try:
-        opts, args = getopt.getopt(
-            argv, "hf:d:vt:",
-            ["file=", "dir=", "help", "verbose", "datetime="])
-    except getopt.GetoptError:
-        help()
-        sys.exit(2)
-
-    for opt, arg in opts:
-        if opt == '-h':
-            help()
-            sys.exit()
-
-        elif opt == '-f' or opt == '--file':
-            posts.append(arg)
-            specific = True
-
-        elif opt == '-d' or opt == '--dir':
-            posts = get_makrdown_files(arg)
-            specific = True
-
-        elif opt == '-v' or opt == '--verbose':
-            verbose = True
-
-        elif opt == '-t' or opt == '--datetime':
-            if arg == 'git':
-                date = Date.GIT
-            elif arg == 'fs':
-                date = Date.FS
-            else:
-                help()
-                sys.exit(2)
-
-    if not specific:
-        posts = get_makrdown_files(POSTS_PATH)
-
-    update_lastmod(posts, verbose, date)
-
-
-main(sys.argv[1:])

_scripts/py/utils/common.py

@@ -1,57 +0,0 @@
-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-
-'''
-Common functions to other scripts.
-
-v2.0
-https://github.com/cotes2020/jekyll-theme-chirpy
-© 2018-2019 Cotes Chung
-MIT License
-'''
-
-import sys
-import os
-import glob
-
-
-def get_yaml(path):
-    """
-    Return the Yaml block of a post and the linenumbers of it.
-    """
-    end = False
-    yaml = ""
-    num = 0
-
-    with open(path, 'r', encoding='utf-8') as f:
-        for line in f.readlines():
-            if line.strip() == '---':
-                if end:
-                    break
-                else:
-                    end = True
-                    continue
-            else:
-                num += 1
-
-            yaml += line
-
-    return yaml, num
-
-
-def get_makrdown_files(path):
-    MD_EXTENSIONS = ["md", "markdown", "markdn", "mdown"]
-    ret_files = []
-
-    for extension in MD_EXTENSIONS:
-        ret_files.extend(glob.glob(os.path.join(path, "*." + extension)))
-
-    return ret_files
-
-
-def check_py_version():
-    if not sys.version_info.major == 3 and sys.version_info.minor >= 5:
-        print("WARNING: This script requires Python 3.5 or higher, "
-              "however you are using Python {}.{}."
-              .format(sys.version_info.major, sys.version_info.minor))
-        sys.exit(1)

_scripts/sh/create_pages.sh

@@ -0,0 +1,154 @@
+#!/usr/local/bin/bash
+#
+# Create HTML pages for Categories and Tags in posts.
+#
+# Usage:
+#     Call from the '_posts' sibling directory.
+#
+# v2.2
+# https://github.com/cotes2020/jekyll-theme-chirpy
+# © 2020 Cotes Chung
+# Published under MIT License
+
+set -eu
+
+TYPE_CATEGORY=0
+TYPE_TAG=1
+
+category_count=0
+tag_count=0
+
+
+_read_yaml() {
+  local _endline=$(grep -n "\-\-\-" $1 | cut -d: -f 1 | sed -n '2p')
+  head -$_endline $1
+}
+
+
+read_categories() {
+  local _yaml=$(_read_yaml $1)
+  local _categories=$(echo "$_yaml" | grep "^categories:")
+  local _category=$(echo "$_yaml" | grep "^category:")
+
+  if [[ ! -z "$_categories" ]]; then
+    echo "$_categories" | sed "s/categories: *//;s/\[//;s/\]//;s/, */,/g;s/\"//g;s/'//g"
+  elif [[ ! -z "_category" ]]; then
+    echo "$_category" | sed "s/category: *//;s/\[//;s/\]//;s/, */,/g;s/\"//g;s/'//g"
+  fi
+}
+
+
+read_tags() {
+  local _yaml=$(_read_yaml $1)
+  echo "$_yaml" | grep "^tags:" | sed "s/tags: *//;s/\[//;s/\]//;s/, */,/g;s/\"//g;s/'//g"
+}
+
+
+init() {
+  if [[ -d categories ]]; then
+    rm -rf categories
+  fi
+
+  if [[ -d tags ]]; then
+    rm -rf tags
+  fi
+
+  mkdir categories tags
+}
+
+
+create_category() {
+  local _name=$1
+  local _filepath="categories/$(echo $_name | sed 's/ /-/g' | awk '{print tolower($0)}').html"
+
+  if [[ ! -f $_filepath ]]; then
+    echo "---" > $_filepath
+    echo "layout: category" >> $_filepath
+    echo "title: $_name" >> $_filepath
+    echo "category: $_name" >> $_filepath
+    echo "---" >> $_filepath
+
+    ((category_count=category_count+1))
+  fi
+}
+
+
+create_tag() {
+  local _name=$1
+  local _filepath="tags/$( echo $_name | sed "s/ /-/g;s/'//g" | awk '{print tolower($0)}' ).html"
+
+  if [[ ! -f $_filepath ]]; then
+
+    echo "---" > $_filepath
+    echo "layout: tag" >> $_filepath
+    echo "title: $_name" >> $_filepath
+    echo "tag: $_name" >> $_filepath
+    echo "---" >> $_filepath
+
+    ((tag_count=tag_count+1))
+  fi
+}
+
+
+#########################################
+# Create HTML pages for Categories/Tags.
+# Arguments:
+#   $1 - an array string
+#   $2 - type specified option
+#########################################
+create_pages() {
+  if [[ $1 == '' ]]; then
+    exit 0
+  fi
+
+  # split string to array
+  IFS_BAK=$IFS
+  IFS=','
+  local _string=$1
+
+  case $2 in
+
+    $TYPE_CATEGORY)
+      for i in ${_string#,}; do
+        create_category $i
+      done
+      ;;
+
+    $TYPE_TAG)
+      for i in ${_string#,}; do
+        create_tag $i
+      done
+      ;;
+
+    *)
+      ;;
+
+    esac
+
+    IFS=$IFS_BAK
+  }
+
+
+main() {
+  init
+
+  for _file in $(ls "_posts")
+  do
+    local _path="_posts/$_file"
+    local _categories=$(read_categories "$_path")
+    local _tags=$(read_tags "$_path")
+
+    create_pages "$_categories" $TYPE_CATEGORY
+    create_pages "$_tags" $TYPE_TAG
+  done
+
+  if [[ $category_count -gt 0 ]]; then
+    echo "[INFO] Succeed! $category_count category-pages created."
+  fi
+
+  if [[ $tag_count -gt 0 ]]; then
+    echo "[INFO] Succeed! $tag_count tag-pages created."
+  fi
+}
+
+main

_scripts/sh/dump_lastmod.sh

@@ -0,0 +1,89 @@
+#!/bin/bash
+#
+# Find out the posts that have been modified and record
+# its lastmod information to file '_data/updates.yml'
+#
+# Usage:
+#     Call from the '_posts' sibling directory.
+#
+# v2.2
+# https://github.com/cotes2020/jekyll-theme-chirpy
+# © 2020 Cotes Chung
+# Published under MIT License
+
+set -eu
+
+POST_DIR=_posts
+OUTPUT_DIR=_data
+OUTPUT_FILE=updates.yml
+
+
+_init() {
+  if [[ ! -d "$OUTPUT_DIR" ]]; then
+    mkdir "$OUTPUT_DIR"
+  fi
+
+  if [[ -f "$OUTPUT_DIR/$OUTPUT_FILE" ]]; then
+    rm -f "$OUTPUT_DIR/$OUTPUT_FILE"
+  fi
+
+  touch "$OUTPUT_DIR/$OUTPUT_FILE"
+}
+
+
+_has_changed() {
+  local _log_count=`git log --pretty=%ad $1 | wc -l | sed 's/ *//'`
+  _log_count=$(($_log_count + 0))
+
+  if [[ $_log_count > 1 ]]; then
+    return 0 # true
+  fi
+
+  return 1 # false
+}
+
+
+###################################
+# Storage the posts' lastmod.
+#
+# Args:
+#     - $1 the post's filename
+#     - $2 the post's filepath
+# Output:
+#     the file '_data/updates.yml'
+###################################
+_dump() {
+  local _lasmod="`git log -1 --pretty=%ad --date=iso $2`"
+
+  echo "-" >> "$OUTPUT_DIR/$OUTPUT_FILE"
+  echo "  filename: '$1'" >> "$OUTPUT_DIR/$OUTPUT_FILE"
+  echo "  lastmod: '$_lasmod'" >> "$OUTPUT_DIR/$OUTPUT_FILE"
+}
+
+
+main() {
+
+  _init
+
+  local _count=0
+
+  for _file in $(ls -r "$POST_DIR")
+  do
+    _filepath="$POST_DIR/$_file"
+    _filename="${_file%.*}"     # jekyll cannot read the extension of a file, so omit it.
+    _filename=${_filename:11}   # remove the date
+
+    if _has_changed "$_filepath"; then
+      _dump "$_filename" "$_filepath"
+      ((_count=_count+1))
+    fi
+
+  done
+
+  if [[ $_count > 0 ]]; then
+    echo "[INFO] Success to update lastmod for $_count post(s)."
+  fi
+}
+
+
+main

_scripts/sh/sync_monitor.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-# Files sync monitoer
+# Files sync monitor
 # v2.0
 # https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2019 Cotes Chung
@@ -8,7 +8,7 @@
 
 # $1 -> the origin file with absolute path.
 # $2 -> the origin sync directory
-# $3 -> the destination sync direcotry
+# $3 -> the destination sync directory
 
 # Omit the system temp file
 if [[ ! -f $1 ]]; then
@@ -33,6 +33,6 @@ if [[ -f "$1" ]]; then
 fi
 
 if [[ $related_dir == "_posts" ]]; then
-  python $3/_scripts/py/init_all.py
-  python $3/_scripts/py/update_posts_lastmod.py -f "$dest/$(basename $1)" -t fs
+  bash $3/_scripts/sh/create_pages.sh
+  bash $3/_scripts/sh/dump_lastmod.sh
 fi

app.js

@@ -0,0 +1,12 @@
+---
+layout: compress
+# Chirpy v2.2
+# https://github.com/cotes2020/jekyll-theme-chirpy
+# © 2020 Cotes Chung
+# MIT Licensed
+---
+
+/* Registering Service Worker */
+if('serviceWorker' in navigator) {
+  navigator.serviceWorker.register('{{ "/sw.js" | relative_url }}');
+};

assets/css/_addon/fonts.scss

@@ -1,312 +1,8 @@
 /*
  * The field 'font-display' is added for Google-fonts.
  *
- * See https://fonts.googleapis.com/css?family=Source+Sans+Pro:400,600,700,900|Oswald|Lato
+ * See: <https://fonts.google.com/>
  *
  */
-/* latin-ext */
-@font-face {
-  font-family: 'Lato';
-  font-style: normal;
-  font-weight: 400;
-  font-display: swap;
-  src: local('Lato Regular'), local('Lato-Regular'), url(https://fonts.gstatic.com/s/lato/v14/S6uyw4BMUTPHjxAwXjeu.woff2) format('woff2');
-  unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
-}
-/* latin */
-@font-face {
-  font-family: 'Lato';
-  font-style: normal;
-  font-weight: 400;
-  font-display: swap;
-  src: local('Lato Regular'), local('Lato-Regular'), url(https://fonts.gstatic.com/s/lato/v14/S6uyw4BMUTPHjx4wXg.woff2) format('woff2');
-  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
-}
-/* cyrillic */
-@font-face {
-  font-family: 'Oswald';
-  font-style: normal;
-  font-weight: 400;
-  font-display: swap;
-  src: local('Oswald Regular'), local('Oswald-Regular'), url(https://fonts.gstatic.com/s/oswald/v16/TK3iWkUHHAIjg752HT8Ghe4.woff2) format('woff2');
-  unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
-}
-/* vietnamese */
-@font-face {
-  font-family: 'Oswald';
-  font-style: normal;
-  font-weight: 400;
-  font-display: swap;
-  src: local('Oswald Regular'), local('Oswald-Regular'), url(https://fonts.gstatic.com/s/oswald/v16/TK3iWkUHHAIjg752Fj8Ghe4.woff2) format('woff2');
-  unicode-range: U+0102-0103, U+0110-0111, U+1EA0-1EF9, U+20AB;
-}
-/* latin-ext */
-@font-face {
-  font-family: 'Oswald';
-  font-style: normal;
-  font-weight: 400;
-  font-display: swap;
-  src: local('Oswald Regular'), local('Oswald-Regular'), url(https://fonts.gstatic.com/s/oswald/v16/TK3iWkUHHAIjg752Fz8Ghe4.woff2) format('woff2');
-  unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
-}
-/* latin */
-@font-face {
-  font-family: 'Oswald';
-  font-style: normal;
-  font-weight: 400;
-  font-display: swap;
-  src: local('Oswald Regular'), local('Oswald-Regular'), url(https://fonts.gstatic.com/s/oswald/v16/TK3iWkUHHAIjg752GT8G.woff2) format('woff2');
-  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
-}
-/* cyrillic-ext */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 400;
-  font-display: swap;
-  src: local('Source Sans Pro Regular'), local('SourceSansPro-Regular'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xK3dSBYKcSV-LCoeQqfX1RYOo3qNa7lqDY.woff2) format('woff2');
-  unicode-range: U+0460-052F, U+1C80-1C88, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
-}
-/* cyrillic */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 400;
-  font-display: swap;
-  src: local('Source Sans Pro Regular'), local('SourceSansPro-Regular'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xK3dSBYKcSV-LCoeQqfX1RYOo3qPK7lqDY.woff2) format('woff2');
-  unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
-}
-/* greek-ext */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 400;
-  font-display: swap;
-  src: local('Source Sans Pro Regular'), local('SourceSansPro-Regular'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xK3dSBYKcSV-LCoeQqfX1RYOo3qNK7lqDY.woff2) format('woff2');
-  unicode-range: U+1F00-1FFF;
-}
-/* greek */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 400;
-  font-display: swap;
-  src: local('Source Sans Pro Regular'), local('SourceSansPro-Regular'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xK3dSBYKcSV-LCoeQqfX1RYOo3qO67lqDY.woff2) format('woff2');
-  unicode-range: U+0370-03FF;
-}
-/* vietnamese */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 400;
-  font-display: swap;
-  src: local('Source Sans Pro Regular'), local('SourceSansPro-Regular'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xK3dSBYKcSV-LCoeQqfX1RYOo3qN67lqDY.woff2) format('woff2');
-  unicode-range: U+0102-0103, U+0110-0111, U+1EA0-1EF9, U+20AB;
-}
-/* latin-ext */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 400;
-  font-display: swap;
-  src: local('Source Sans Pro Regular'), local('SourceSansPro-Regular'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xK3dSBYKcSV-LCoeQqfX1RYOo3qNq7lqDY.woff2) format('woff2');
-  unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
-}
-/* latin */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 400;
-  font-display: swap;
-  src: local('Source Sans Pro Regular'), local('SourceSansPro-Regular'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xK3dSBYKcSV-LCoeQqfX1RYOo3qOK7l.woff2) format('woff2');
-  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
-}
-/* cyrillic-ext */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 600;
-  font-display: swap;
-  src: local('Source Sans Pro SemiBold'), local('SourceSansPro-SemiBold'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xKydSBYKcSV-LCoeQqfX1RYOo3i54rwmhduz8A.woff2) format('woff2');
-  unicode-range: U+0460-052F, U+1C80-1C88, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
-}
-/* cyrillic */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 600;
-  font-display: swap;
-  src: local('Source Sans Pro SemiBold'), local('SourceSansPro-SemiBold'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xKydSBYKcSV-LCoeQqfX1RYOo3i54rwkxduz8A.woff2) format('woff2');
-  unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
-}
-/* greek-ext */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 600;
-  font-display: swap;
-  src: local('Source Sans Pro SemiBold'), local('SourceSansPro-SemiBold'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xKydSBYKcSV-LCoeQqfX1RYOo3i54rwmxduz8A.woff2) format('woff2');
-  unicode-range: U+1F00-1FFF;
-}
-/* greek */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 600;
-  font-display: swap;
-  src: local('Source Sans Pro SemiBold'), local('SourceSansPro-SemiBold'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xKydSBYKcSV-LCoeQqfX1RYOo3i54rwlBduz8A.woff2) format('woff2');
-  unicode-range: U+0370-03FF;
-}
-/* vietnamese */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 600;
-  font-display: swap;
-  src: local('Source Sans Pro SemiBold'), local('SourceSansPro-SemiBold'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xKydSBYKcSV-LCoeQqfX1RYOo3i54rwmBduz8A.woff2) format('woff2');
-  unicode-range: U+0102-0103, U+0110-0111, U+1EA0-1EF9, U+20AB;
-}
-/* latin-ext */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 600;
-  font-display: swap;
-  src: local('Source Sans Pro SemiBold'), local('SourceSansPro-SemiBold'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xKydSBYKcSV-LCoeQqfX1RYOo3i54rwmRduz8A.woff2) format('woff2');
-  unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
-}
-/* latin */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 600;
-  font-display: swap;
-  src: local('Source Sans Pro SemiBold'), local('SourceSansPro-SemiBold'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xKydSBYKcSV-LCoeQqfX1RYOo3i54rwlxdu.woff2) format('woff2');
-  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
-}
-/* cyrillic-ext */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 700;
-  font-display: swap;
-  src: local('Source Sans Pro Bold'), local('SourceSansPro-Bold'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xKydSBYKcSV-LCoeQqfX1RYOo3ig4vwmhduz8A.woff2) format('woff2');
-  unicode-range: U+0460-052F, U+1C80-1C88, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
-}
-/* cyrillic */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 700;
-  font-display: swap;
-  src: local('Source Sans Pro Bold'), local('SourceSansPro-Bold'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xKydSBYKcSV-LCoeQqfX1RYOo3ig4vwkxduz8A.woff2) format('woff2');
-  unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
-}
-/* greek-ext */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 700;
-  font-display: swap;
-  src: local('Source Sans Pro Bold'), local('SourceSansPro-Bold'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xKydSBYKcSV-LCoeQqfX1RYOo3ig4vwmxduz8A.woff2) format('woff2');
-  unicode-range: U+1F00-1FFF;
-}
-/* greek */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 700;
-  font-display: swap;
-  src: local('Source Sans Pro Bold'), local('SourceSansPro-Bold'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xKydSBYKcSV-LCoeQqfX1RYOo3ig4vwlBduz8A.woff2) format('woff2');
-  unicode-range: U+0370-03FF;
-}
-/* vietnamese */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 700;
-  font-display: swap;
-  src: local('Source Sans Pro Bold'), local('SourceSansPro-Bold'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xKydSBYKcSV-LCoeQqfX1RYOo3ig4vwmBduz8A.woff2) format('woff2');
-  unicode-range: U+0102-0103, U+0110-0111, U+1EA0-1EF9, U+20AB;
-}
-/* latin-ext */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 700;
-  font-display: swap;
-  src: local('Source Sans Pro Bold'), local('SourceSansPro-Bold'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xKydSBYKcSV-LCoeQqfX1RYOo3ig4vwmRduz8A.woff2) format('woff2');
-  unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
-}
-/* latin */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 700;
-  font-display: swap;
-  src: local('Source Sans Pro Bold'), local('SourceSansPro-Bold'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xKydSBYKcSV-LCoeQqfX1RYOo3ig4vwlxdu.woff2) format('woff2');
-  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
-}
-/* cyrillic-ext */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 900;
-  font-display: swap;
-  src: local('Source Sans Pro Black'), local('SourceSansPro-Black'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xKydSBYKcSV-LCoeQqfX1RYOo3iu4nwmhduz8A.woff2) format('woff2');
-  unicode-range: U+0460-052F, U+1C80-1C88, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
-}
-/* cyrillic */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 900;
-  font-display: swap;
-  src: local('Source Sans Pro Black'), local('SourceSansPro-Black'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xKydSBYKcSV-LCoeQqfX1RYOo3iu4nwkxduz8A.woff2) format('woff2');
-  unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
-}
-/* greek-ext */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 900;
-  font-display: swap;
-  src: local('Source Sans Pro Black'), local('SourceSansPro-Black'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xKydSBYKcSV-LCoeQqfX1RYOo3iu4nwmxduz8A.woff2) format('woff2');
-  unicode-range: U+1F00-1FFF;
-}
-/* greek */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 900;
-  font-display: swap;
-  src: local('Source Sans Pro Black'), local('SourceSansPro-Black'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xKydSBYKcSV-LCoeQqfX1RYOo3iu4nwlBduz8A.woff2) format('woff2');
-  unicode-range: U+0370-03FF;
-}
-/* vietnamese */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 900;
-  font-display: swap;
-  src: local('Source Sans Pro Black'), local('SourceSansPro-Black'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xKydSBYKcSV-LCoeQqfX1RYOo3iu4nwmBduz8A.woff2) format('woff2');
-  unicode-range: U+0102-0103, U+0110-0111, U+1EA0-1EF9, U+20AB;
-}
-/* latin-ext */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 900;
-  font-display: swap;
-  src: local('Source Sans Pro Black'), local('SourceSansPro-Black'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xKydSBYKcSV-LCoeQqfX1RYOo3iu4nwmRduz8A.woff2) format('woff2');
-  unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
-}
-/* latin */
-@font-face {
-  font-family: 'Source Sans Pro';
-  font-style: normal;
-  font-weight: 900;
-  font-display: swap;
-  src: local('Source Sans Pro Black'), local('SourceSansPro-Black'), url(https://fonts.gstatic.com/s/sourcesanspro/v11/6xKydSBYKcSV-LCoeQqfX1RYOo3iu4nwlxdu.woff2) format('woff2');
-  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
-}
+
+@import url('https://fonts.googleapis.com/css?family=Lato|Roboto+Condensed:400,700|Source+Sans+Pro:400,600,700,900&display=swap');

assets/css/_addon/main.scss

@@ -1,6 +1,4 @@
----
----
-/*!
+/*
 * The main styles.
 * v2.0
 * https://github.com/cotes2020/jekyll-theme-chirpy
@@ -53,15 +51,9 @@ html[mode=dark] {
 }
 
 html, body {
-  height: 100%;
   font-size: 16px;
 }
 
-/* Solved jumping scrollbar */
-html {
-  overflow-y: scroll;
-}
-
 body {
   line-height: 1.75rem;
   background: var(--body-bg);
@@ -72,10 +64,10 @@ body {
 
 /*--- sidebar layout ---*/
 
-$tab-height: 3.3rem;
-$tab-cursor-height: 1.6rem;
 $tab-count: {{ site.data.tabs | size }};
 
+$sidebar-display: "sidebar-display";
+
 #sidebar {
   @include pl-pr(0);
   position: fixed;
@@ -85,13 +77,34 @@ $tab-count: {{ site.data.tabs | size }};
   overflow-y: auto;
   width: $sidebar-width-medium;
   z-index: 99;
-  -webkit-transition: transform 0.4s ease;
-  transition: transform 0.4s ease;
-  background: rgb(42, 30, 107);
   background: var(--sidebar-bg);
   a {
-    @include sidebar-icon;
+    @include sidebar-links;
   }
+
+  .site-title {
+    text-align: center;
+    a {
+      // color: var(--site-title-color);
+      font-weight: 900;
+      font-size: 1.5rem;
+      letter-spacing: .5px;
+      &:hover {
+        color: #fff;
+        text-decoration: none;
+      }
+    }
+  }
+
+  .site-subtitle {
+    font-size: 95%;
+    text-align: center;
+    color: #828282;
+    line-height: 1.2rem;
+    word-spacing: 1px;
+    margin: .5rem 1.5rem 2rem 1.5rem;
+  }
+
   .sidebar-bottom {
     .icon-border+a { // the icon behide mode-toggle
       margin-left: .1rem;
@@ -178,7 +191,7 @@ $tab-count: {{ site.data.tabs | size }};
 
     #mode-toggle-wrapper {
       i {
-        @include sidebar-icon;
+        @include sidebar-links;
         margin-right: 0;
         font-size: 1.05rem;
         text-align: center;
@@ -236,11 +249,10 @@ $tab-count: {{ site.data.tabs | size }};
   img {
     width: 100%;
     height: 100%;
-    background-size: cover;
-    background-repeat: no-repeat;
-    -webkit-transition: all .5s !important;
-    -moz-transition: all .5s !important;
-    transition: all .5s !important;
+    -webkit-transition: transform .5s;
+    -moz-transition: transform .5s;
+    transition: transform .5s;
+
     &:hover {
       -ms-transform: scale(1.2);
       -moz-transform: scale(1.2);
@@ -250,33 +262,6 @@ $tab-count: {{ site.data.tabs | size }};
   }
 } // #avatar
 
-#site-title {
-  text-align: center;
-  a {
-    color: #b6b6b6;
-    font-weight: 900;
-    font-size: 1.5rem;
-    letter-spacing: .5px;
-    &:hover {
-      color: #fff;
-      text-decoration: none;
-    }
-  }
-}
-
-#site-subtitle {
-  font-size: 95%;
-  text-align: center;
-  color: #828282;
-  line-height: 1.2rem;
-  word-spacing: 1px;
-  margin: .5rem 1.5rem 2rem 1.5rem;
-}
-
-.sidebar-expand {
-  box-shadow: 4px 0 8px 0 rgba(0, 0, 0, 0.2), 6px 0 20px 0 rgba(0, 0, 0, 0.19) !important;
-}
-
 #search-result-wrapper {
   display: none;
   position: fixed;
@@ -337,7 +322,6 @@ $tab-count: {{ site.data.tabs | size }};
   border: 1px solid var(--search-wrapper-bg);
   background: var(--search-wrapper-bg);
   padding: 0 .5rem;
-  transition: background-color .15s ease-in-out,border-color .15s ease-in-out;
   i {
     z-index: 2;
     font-size: .9rem;
@@ -398,14 +382,15 @@ $tab-count: {{ site.data.tabs | size }};
   a {
     @extend %link-color;
     @extend %no-bottom-border;
+    @extend %heading;
     font-size: 1.4rem;
-    font-weight: 400;
     line-height: 2.5rem;
     &:hover {
       @extend %link-hover;
     }
   }
   >div {
+    max-width: 100%;
     &:not(:last-child) {
       margin-bottom: 1rem;
     }
@@ -447,10 +432,8 @@ $tab-count: {{ site.data.tabs | size }};
   left: 0;
   height: 100%;
   width: 100%;
-  background: var(--mask-bg);
-  opacity: 0.5;
   z-index: 1;
-  @at-root .sidebar-expand~& {
+  @at-root [#{$sidebar-display}] & {
     display: block!important;
   }
 }
@@ -460,12 +443,9 @@ $tab-count: {{ site.data.tabs | size }};
 #main-wrapper {
   background-color: var(--main-wrapper-bg);
   position: relative;
-  min-height: 100%;
+  min-height: 100vh;
   padding-bottom: $footer-height;
   @include pl-pr(0);
-  margin-left: 260px;
-  transition: transform 0.4s ease;
-  -webkit-transition: transform 0.4s ease;
 }
 
 #main>div.row:first-child>div {
@@ -513,6 +493,8 @@ footer {
     }
   }
   a {
+    @include semi-bold;
+    color: var(---footer-link);
     &:link {
       @include no-text-decoration;
     }
@@ -521,14 +503,8 @@ footer {
       @include no-text-decoration;
     }
   }
-  .footer-left a {
-    @extend %footer-content;
-  }
   .footer-right {
     text-align: right;
-    a {
-      @extend %footer-content;
-    }
   }
 }
 
@@ -540,7 +516,6 @@ footer {
   margin-right: 1.5rem;
   margin-top: 3rem;
   margin-bottom: 4rem;
-  color: #6c757d;
   &:only-child {
     position: -webkit-sticky; /* Safari */
     position: sticky;
@@ -561,8 +536,7 @@ footer {
     margin-top: 0;
     margin-bottom: 0;
     letter-spacing: -0.02em;
-    font-size: 1rem;
-    font-family: 'Oswald', sans-serif;
+    @include label(inherit, 600);
   }
   .post-content {
     font-size: .9rem;
@@ -641,29 +615,35 @@ footer {
 /*--- Typography ---*/
 
 h1 {
+  @extend %heading;
   font-size: 1.8rem;
-  font-weight: 400;
 }
 
 h2 {
+  @extend %heading;
   @extend %section;
   @extend %anchor;
-  font-size: 1.35rem;
+  font-size: 1.4rem;
 }
 
 h3 {
+  @extend %heading;
   @extend %section;
   @extend %anchor;
   font-size: 1.25rem;
 }
 
 h4 {
+  @extend %heading;
   @extend %section;
   @extend %anchor;
   font-size: 1.15rem;
 }
 
 h5 {
+  @extend %heading;
+  @extend %section;
+  @extend %anchor;
   font-size: 1.1rem;
 }
 
@@ -752,9 +732,6 @@ a {
       @extend %no-bottom-border;
     }
   }
-  .license-wrapper .license-text &:hover {
-    @extend %link-hover;
-  }
 
 } // a
 
@@ -778,6 +755,8 @@ a {
 div.post-content {
   >table, li>table {
     min-width: 60%;
+    display: block;
+    overflow-x: auto;
     border-collapse: collapse;
     border-spacing: 0;
     margin-bottom: 1.5rem;
@@ -791,12 +770,12 @@ table {
       &:nth-child(2n) {
         background-color: var(--tb-even-bg);
       }
-      &:last-child:nth-child(2n) {
-        border-bottom: solid 1px var(--tb-even-border-color);
-      }
       &:nth-child(2n + 1) {
         background-color: var(--tb-odd-bg);
       }
+      & {
+        border-bottom: 1px solid var(--tb-border-color);
+      }
     }
     th {
       @extend %table-cell;
@@ -857,13 +836,14 @@ table {
   min-width: 2rem;
   text-align: center;
   background: var(--tag-bg);
-  border-radius: .34rem;
+  border-radius: .3rem;
   padding: 0 .4rem;
-  color: #818182;
-  line-height: 1.6rem;
-  &:not(:first-child) {
-    margin-left: .2rem;
+  color: inherit;
+  line-height: 1.3rem;
+  &:not(:last-child) {
+    margin-right: .2rem;
   }
+
   &:hover {
     @extend %tag-hover;
     border-bottom: none;
@@ -875,7 +855,7 @@ table {
 /* --- buttons --- */
 .btn-lang {
   border: 1px solid !important;
-  padding: 0 3px 1px 3px;
+  padding: 1px 3px;
   border-radius: 3px;
   color: var(--link-color);
   &:focus {
@@ -904,11 +884,6 @@ table {
   visibility: hidden !important;
 }
 
-.no-scroll {
-  position: fixed;
-  width: 100%;
-}
-
 .flex-grow-1 {
   -ms-flex-positive: 1!important;
   flex-grow: 1!important;
@@ -946,6 +921,7 @@ table {
   box-shadow: none;
   border-color: var(--input-focus-border-color) !important;
   background: center !important;
+  transition: background-color .15s ease-in-out,border-color .15s ease-in-out;
 }
 
 /*--- Responsive Design ---*/
@@ -972,7 +948,7 @@ table {
     height: 5rem;
   }
 
-  #site-subtitle {
+  .site-subtitle {
     @include ml-mr(1.8rem);
   }
 
@@ -1005,62 +981,38 @@ table {
 
 }
 
-/* Sidebar is visibal */
-@media all and (min-width: 831px) {
 
-  #profile-wrapper {
-    margin-top: 3rem;
-  }
-
-  #search-wrapper {
-    width: 22%;
-    min-width: 150px;
-  }
-
-  /* button 'back-to-Top' position */
-  #back-to-top {
-    bottom: 5.5rem;
-    right: 1.2rem;
-  }
-
-  .topbar-up {
-    box-shadow: none !important;
-  }
-
-  #topbar-title {
-    text-align: left;
-  }
-
-  footer>div.d-flex {
-    width: 92%;
-  }
-
-}
-
-/* iPad 9.7" horizontal */
-@media all and (min-width: 992px) and (max-width: 1024px) {
-  #main-wrapper .col-lg-11 {
-    -webkit-box-flex: 0;
-    -ms-flex: 0 0 96%;
-    flex: 0 0 96%;
-    max-width: 96%;
-  }
-}
-
-
-/* Hide SideBar and TOC */
+/* Hide Sidebar and TOC */
 @media all and (max-width: 830px) {
-
-  .sidebar-expand {
-    transform: translateX(0) !important;
-    ~#main-wrapper {
-      transform: translateX(#{$sidebar-width-medium}) !important;
+  %slide {
+    -webkit-transition: transform 0.4s ease;
+    transition: transform 0.4s ease;
   }
+
+
+  html, body {
+    overflow-x: hidden;
+  }
+
+  [#{$sidebar-display}] {
+
+    #sidebar {
+      transform: translateX(0);
+    }
+
+    #topbar-wrapper,
+    #main-wrapper {
+      transform: translateX(#{$sidebar-width-medium});
+    }
+
   }
 
   #sidebar {
+    @extend %slide;
+
     transform: translateX(-#{$sidebar-width-medium}); // hide
     -webkit-transform: translateX(-#{$sidebar-width-medium});
+
     .cursor {
       -webkit-transition: none;
       -moz-transition: none;
@@ -1068,8 +1020,13 @@ table {
     }
   }
 
+  #topbar-wrapper {
+    @extend %slide;
+  }
+
   #main-wrapper {
-    margin-left: 0;
+    @extend %slide;
+    padding-top: $topbar-height;
   }
 
   #search-result-wrapper {
@@ -1089,8 +1046,6 @@ table {
   }
 
   #topbar-wrapper {
-    position: -webkit-sticky;
-    position: sticky;
     left: 0;
   }
 
@@ -1159,6 +1114,57 @@ table {
 }
 
 
+/* Sidebar visible */
+@media all and (min-width: 831px) {
+
+  /* Solved jumping scrollbar */
+  html {
+    overflow-y: scroll;
+  }
+
+  #main-wrapper {
+    margin-left: $sidebar-width-medium;
+  }
+
+  #profile-wrapper {
+    margin-top: 3rem;
+  }
+
+  #search-wrapper {
+    width: 22%;
+    min-width: 150px;
+  }
+
+  /* button 'back-to-Top' position */
+  #back-to-top {
+    bottom: 5.5rem;
+    right: 1.2rem;
+  }
+
+  .topbar-up {
+    box-shadow: none !important;
+  }
+
+  #topbar-title {
+    text-align: left;
+  }
+
+  footer>div.d-flex {
+    width: 92%;
+  }
+
+}
+
+/* iPad 9.7" horizontal */
+@media all and (min-width: 992px) and (max-width: 1024px) {
+  #main-wrapper .col-lg-11 {
+    -webkit-box-flex: 0;
+    -ms-flex: 0 0 96%;
+    flex: 0 0 96%;
+    max-width: 96%;
+  }
+}
+
 /* Compact icons in sidebar & TOC hidden */
 @media all and (min-width: 832px) and (max-width: 1199px) {
 
@@ -1180,12 +1186,16 @@ table {
     width: calc(100% - 210px);
   }
 
-  #site-title {
+  #search-results>div {
+    max-width: 700px;
+  }
+
+  .site-title {
     font-size: 1.3rem;
     margin-left: 0!important;
   }
 
-  #site-subtitle {
+  .site-subtitle {
     font-size: 90%;
     @include ml-mr(1rem);
   }
@@ -1219,10 +1229,6 @@ table {
     -ms-flex-pack: center!important;
     justify-content: center!important;
   }
-
-  #search-results>div {
-    max-width: 700px;
-  }
 }
 
 
@@ -1348,11 +1354,8 @@ table {
   }
 
   #profile-wrapper {
-    margin-top: 4rem;
-    margin-bottom: 3rem;
-    padding-left: 18%;
+    margin: 4rem 2rem 3rem 4rem;
     -ms-flex-direction: column!important;
-  }
 
     #avatar {
       -webkit-box-pack: normal !important;
@@ -1365,7 +1368,7 @@ table {
     }
 
     .profile-text {
-    padding-left: .5rem;
+      margin-left: .5rem;
       /* .d-flex */
       display: -webkit-box!important;
       display: -ms-flexbox!important;
@@ -1376,28 +1379,29 @@ table {
       /* .align-content-center */
       -ms-flex-line-pack: center!important;
       align-content: center!important;
-  }
-
-  #site-title a {
-    font-size: 1.7rem;
-    letter-spacing: 1px;
-  }
-
-  .profile-text>div {
+      >div {
         text-align: left !important;
         width: 100%;
       }
-
-  #site-subtitle {
-    word-spacing: 0;
-    padding-right: 3rem;
-    margin: .3rem 0 0 0;
+    }
   }
 
   #sidebar {
     width: $sidebar-width-large;
+
+    .site-title a {
+      font-size: 1.7rem;
+      letter-spacing: 1px;
+      margin: 0;
+    }
+
+    .site-subtitle {
+      word-spacing: 0;
+      margin: .3rem 0 0 0;
+    }
+
     ul {
-      margin-left: 5%;
+      margin-left: 3%;
       >li>a {
         padding-left: 2.5rem;
         -webkit-box-pack: start!important;
@@ -1453,10 +1457,8 @@ table {
           margin-left: 0;
         }
       }
-
     } // .sidebar-bottom
   } // #sidebar
-
   footer>div.d-flex {
     width: 87%;
     max-width: 1140px;
@@ -1471,12 +1473,17 @@ table {
 
 } // min-width: 1650px
 
+
 @media all and (min-width: 1700px) {
   #topbar-wrapper {
     padding-right: calc(100% - #{$sidebar-width-large}
      - (1920px - #{$sidebar-width-large}) ) /* 100% - 350px - (1920px - 350px); */
   }
 
+  #topbar {
+    max-width: calc(#{$main-content-max-width} + 20px)
+  }
+
   #main>div.row {
     padding-left: calc((100% - #{$main-content-max-width} - 2%) / 2);
   }

assets/css/_addon/module.scss

@@ -37,6 +37,11 @@
   border-bottom: none;
 }
 
+%heading {
+  font-weight: 400;
+  font-family: 'Lato', 'Microsoft Yahei', sans-serif;
+}
+
 %section {
   #post-wrapper & {
     line-height: 1.2;
@@ -45,18 +50,9 @@
 }
 
 %anchor {
-  #post-wrapper &,
-  #page & {
   padding-top: 3.5rem;
   margin-top: -2.5rem;
 }
-}
-
-%footer-content {
-  font-weight: 600;
-  color: var(---footer-link);
-}
-
 
 /*---------- scss mixin ---------*/
 
@@ -64,8 +60,8 @@
   text-decoration: none;
 }
 
-@mixin sidebar-icon {
-  color: rgba(255, 255, 255, 0.5);
+@mixin sidebar-links($color: rgba(255, 255, 255, 0.5)) {
+  color: $color;
   transition: color 0.35s ease-in-out;
   user-select: none;
   margin: 0 .25rem;
@@ -91,3 +87,14 @@
 @mixin input-placeholder {
   opacity: 0.6;
 }
+
+@mixin semi-bold {
+  font-weight: 600;
+}
+
+@mixin label($font-size: 1rem, $font-weight: 600, $color: var(--label-color)) {
+  color: $color;
+  font-size: $font-size;
+  font-weight: $font-weight;
+  font-family: 'Roboto Condensed', 'Microsoft Yahei', sans-serif;
+}

assets/css/_addon/syntax.scss

@@ -1,5 +1,3 @@
----
----
 /*
 * The syntax highlight.
 * v2.0
@@ -12,12 +10,6 @@
 @import "_colors/dark-syntax";
 
 
-@mixin highlight-box-shadow($val) {
-  -moz-box-shadow: $val;
-  -webkit-box-shadow: $val;
-  box-shadow: $val;
-}
-
 html:not([mode]), html[mode=light] {
   @include light-syntax;
 }
@@ -47,7 +39,7 @@ html[mode=dark] {
 }
 
 .highlighter-rouge {
-  background: var(--highlight-bg-color);
+  background-color: var(--highlight-bg-color);
   @extend %code-snippet-radius;
   color: var(--highlighter-rouge-color);
   margin-bottom: 1.2em; /* Override BS Inline-code style */
@@ -56,12 +48,10 @@ html[mode=dark] {
 .highlight {
   @extend %code-snippet-radius;
   background: var(--highlight-bg-color);
-
   @at-root figure#{&} {
     background: var(--highlight-bg-color);
   }
   overflow: auto;
-  @include highlight-box-shadow(inset 0 0 2px #c2c6cc);
   .lineno {
     margin: .8rem 0rem;
     padding: 0 .5rem;
@@ -104,17 +94,21 @@ code {
   -moz-hyphens: none;
   hyphens: none;
   &.highlighter-rouge {
-    padding: 2px 4px;
-    margin: 0 .3rem;
+    padding: 3px 5px;
+    margin: 0 .15rem;
     border-radius: 4px;
-    border: 1px solid var(--code-highlighter-rouge);
+    background-color: var(--inline-code-bg);
   }
   @at-root a>&.highlighter-rouge {
     padding-bottom: 0; // show link's underlinke
+    color: inherit;
   }
   @at-root a:hover>&.highlighter-rouge {
     border-bottom: none;
   }
+  blockquote &.highlighter-rouge {
+    color: inherit;
+  }
 }
 
 td.rouge-code {
@@ -122,9 +116,10 @@ td.rouge-code {
   padding-right: 1rem;
 }
 
-/* Hide line numbers for defualt, console, and terminal code snippets */
+/* Hide line numbers for default, console, and terminal code snippets */
 div {
   &[class^='highlighter-rouge'],
+  &.language-plaintext.highlighter-rouge,
   &.language-console.highlighter-rouge,
   &.language-terminal.highlighter-rouge {
     pre.lineno {

assets/css/_addon/variables.scss

@@ -9,6 +9,9 @@
 
 /*--- ↓ width and height ----*/
 
+$tab-height: 3.3rem;
+$tab-cursor-height: 1.6rem;
+
 $sidebar-width-small: 210px;
 $sidebar-width-medium: 260px;
 $sidebar-width-large: 350px;

assets/css/_colors/dark-syntax.scss

@@ -71,21 +71,21 @@
 
   .highlight .gh { } /* Generic Heading & Diff Header */
   .highlight .gu { color: #75715e; } /* Generic.Subheading & Diff Unified/Comment? */
-  .highlight .gd { color: #f92672; } /* Generic.Deleted & Diff Deleted */
-  .highlight .gi { color: #a6e22e; } /* Generic.Inserted & Diff Inserted */
+  .highlight .gd { color: #f92672; background-color: #561c08 } /* Generic.Deleted & Diff Deleted */
+  .highlight .gi { color: #a6e22e; background-color: #0b5858 } /* Generic.Inserted & Diff Inserted */
 
 
   /*-----  My styles ------*/
 
-  --code-highlighter-rouge: #272822;
   --highlight-bg-color: #272822;
   --highlighter-rouge-color: #de6b18;
 
   --highlight-lineno-color: #6c6c6d;
   --highlight-lineno-border-color: #3c4042;
 
+  --inline-code-bg: var(--highlight-bg-color);
+
   .highlight {
-    @include highlight-box-shadow(none);
     .gp { color: #818c96; }
   }
   pre { color: #818c96 } /* override Bootstrap */

assets/css/_colors/dark-typography.scss

@@ -23,7 +23,7 @@
   --link-color: rgb(138, 180, 248);
   --link-underline-color: rgb(82, 108, 150);
   --main-border-color: rgb(44, 45, 45);
-  --button-bg: rgb(39, 40, 33);
+  --button-bg: rgb(39, 40, 43);
   --blockquote-border-color: rgb(66, 66, 66);
   --blockquote-text-color: rgb(117, 117, 117);
 
@@ -32,9 +32,8 @@
   --btn-backtotop-border-color: var(--btn-border-color);
   --btn-box-shadow: var(--main-wrapper-bg);
 
-  --card-bg: rgb(39, 40, 33);
   --card-header-bg: rgb(51, 50, 50);
-  --label-relate-post: rgb(164, 175, 181);
+  --label-color: rgb(108, 117, 125);
 
   /* Sidebar */
   --nav-cursor-color: rgb(183, 182, 182);
@@ -46,6 +45,7 @@
   /* Home page */
   --post-list-text-color: rgb(175, 176, 177);
   --btn-patinator-text-color: var(--text-color);
+  --btn-paginator-hover-color: rgb(64, 65, 66);
   --btn-active-bg: rgba(28, 52, 94, 1);
   --btn-active-border-color: rgb(66, 94, 138);
   --btn-text-color: var(--text-color);
@@ -56,15 +56,15 @@
   --toc-highlight: rgb(116, 178, 243);
   --tag-bg: rgb(41, 40, 40);
   --tag-hover: rgb(43, 56, 62);
-  --tb-odd-bg: rgba(52, 53, 42, 0.52); /* odd rows of the posts' table */
+  --tb-odd-bg: rgba(42, 47, 53, 0.52); /* odd rows of the posts' table */
   --tb-even-bg: rgb(31, 31, 34); /* even rows of the posts' table */
-  --tb-even-border-color: var(--tb-odd-bg);
-  --tb-even-border-color: var(--tb-odd-bg);
+  --tb-border-color: var(--tb-odd-bg);
   --footnote-target-bg: rgb(63, 81, 181);
   --btn-share-color: #6c757d;
   --btn-share-hover-color: #bfc1ca;
   --relate-post-date: var(--text-muted-color);
-  --card-border-color: var(--main-wrapper-bg);
+  --card-bg: rgb(39, 40, 43);
+  --card-border-color: rgb(53, 53, 60);
   --card-box-shadow: var(--main-wrapper-bg);
 
   /* tags */
@@ -86,6 +86,9 @@
   /* Footer */
   ---footer-link: rgb(146, 146, 146);
 
+  .post-content img {
+    filter: brightness(90%);
+  }
 
   hr {
     border-color: var(--main-border-color);

assets/css/_colors/light-syntax.scss

@@ -17,11 +17,11 @@
   .highlight .cp { color: #999999; font-weight: bold; font-style: italic } /* Comment.Preproc */
   .highlight .c1 { color: #999988; font-style: italic } /* Comment.Single */
   .highlight .cs { color: #999999; font-weight: bold; font-style: italic } /* Comment.Special */
-  .highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */
+  .highlight .gd { color: #d01040; background-color: #ffdddd } /* Generic.Deleted */
   .highlight .ge { color: #000000; font-style: italic } /* Generic.Emph */
   .highlight .gr { color: #aa0000 } /* Generic.Error */
   .highlight .gh { color: #999999 } /* Generic.Heading */
-  .highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */
+  .highlight .gi { color: #008080; background-color: #ddffdd } /* Generic.Inserted */
   .highlight .go { color: #888888 } /* Generic.Output */
   .highlight .gp { color: #555555 } /* Generic.Prompt */
   .highlight .gs { font-weight: bold } /* Generic.Strong */
@@ -71,10 +71,10 @@
   .highlight .il { color: #009999 } /* Literal.Number.Integer.Long */
 
   /*--- custom light colors ---*/
-  --code-highlighter-rouge: #e9ecef;
   --highlight-bg-color: #f7f7f7;
   --highlighter-rouge-color: #353a3d;
   --highlight-lineno-color: #c2c6cc;
   --highlight-lineno-border-color: #e9ecef;
 
+  --inline-code-bg: #f3f3f3;
 } // light-syntax

assets/css/_colors/light-typography.scss

@@ -18,7 +18,7 @@
 
   --btn-border-color: #e9ecef;
 
-  --text-color: #343a40;
+  --text-color: #333333;
 
   --blockquote-border-color: #eee;
 
@@ -30,9 +30,9 @@
 
   --text-muted-color: gray;
 
-  --tb-odd-bg: #f8f9fa;
+  --tb-odd-bg: #fbfcfd;
 
-  --tb-even-border-color: rgba(210, 215, 217, 0.75);
+  --tb-border-color: #eaeaea;
 
   --button-bg: #fff;
 
@@ -55,8 +55,6 @@
 
   --topbar-text-color: rgb(78, 78, 78);
 
-  --search-wrapper-bg: #fff;
-
   --search-wrapper-bg: #f5f5f5;
 
   --search-tag-bg: #f8f9fa;
@@ -65,12 +63,14 @@
 
   --input-focus-border-color: var(--btn-border-color);
 
-  /* Home */
+  /* Home page */
 
   --post-list-text-color: dimgray;
 
   --btn-patinator-text-color: #555555;
 
+  --btn-paginator-hover-color: #e9ecef;
+
   --btn-active-bg: #2a408e;
 
   --btn-active-border-color: #007bff;
@@ -89,7 +89,7 @@
 
   --card-box-shadow: rgba(234, 234, 234, 0.7686274509803922);
 
-  --label-relate-post: #353a3d;
+  --label-color: #808080;
 
   --relate-post-date: rgba(30, 55, 70, .4);
 

assets/css/archives.scss

@@ -1,12 +1,13 @@
 ---
+# Style for Archives
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
+# © 2019 Cotes Chung
+# MIT License
 ---
-/*!
-  Style for Archives
-  v2.0
-  https://github.com/cotes2020/jekyll-theme-chirpy
-  © 2019 Cotes Chung
-  MIT License
-*/
+
+
+{% include_relative _addon/main.scss %}
 
 %date-timeline {
   content: "";
@@ -18,6 +19,10 @@
   background-color: var(--timeline-color);
 }
 
+%date-font {
+  font-family: 'Roboto Condensed', sans-serif;
+}
+
 #archives {
   letter-spacing: 0.03rem;
   li {
@@ -37,7 +42,7 @@
 
   span.lead {
     font-size: 1.5rem;
-    font-family: 'Oswald', sans-serif;
+    @extend %date-font;
     position: relative;
     left: 8px;
 
@@ -75,7 +80,7 @@
     &.month {
       width: 1.4rem;
       text-align: center;
-      font-family: 'Oswald', sans-serif;
+      @extend %date-font;
       ~a::before {
         /* A dot for Month and Day */
         content: "";
@@ -96,7 +101,7 @@
     }
     &.day {
       font-size: 85%;
-      font-family: sans-serif;
+      font-family: 'Lato', sans-serif;
       text-align: center;
       margin-right: -2px;
       width: 1.2rem;

assets/css/categories.scss

@@ -1,12 +1,13 @@
 ---
+# Style for Tab Categories
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
+# © 2019 Cotes Chung
+# MIT License
 ---
-/*!
-  Style for Tab Categories
-  v2.0
-  https://github.com/cotes2020/jekyll-theme-chirpy
-  © 2019 Cotes Chung
-  MIT License
-*/
+
+
+{% include_relative _addon/main.scss %}
 
 %category-icon-color {
   color: gray;

assets/css/category-tag.scss

@@ -1,13 +1,13 @@
 ---
+# Style for page Category and Tag
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
+# © 2019 Cotes Chung
+# MIT License
 ---
-/*!
-  Style for page Category and Tag
-  v2.0
-  https://github.com/cotes2020/jekyll-theme-chirpy
-  © 2019 Cotes Chung
-  MIT License
-*/
-@import "_addon/module";
+
+
+{% include_relative _addon/main.scss %}
 
 #page-category, #page-tag {
   ul>li {

assets/css/home.scss

@@ -1,47 +1,45 @@
 ---
+# Style for Homepage
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
+# © 2019 Cotes Chung
+# MIT License
 ---
-/*!
-  Style for Homepage
-  v2.0
-  https://github.com/cotes2020/jekyll-theme-chirpy
-  © 2019 Cotes Chung
-  MIT License
-*/
 
+{% include_relative _addon/main.scss %}
 
 #post-list {
   margin-top: 1rem;
   padding-right: .5rem;
-  .post-meta {
-    i:not(:first-child) { // post-meta icons on HOME
-      margin-left: 1.5rem;
-    }
-  }
-}
-
-.pagination {
-  font-size: 1rem;
-  a:hover {
-    text-decoration: none;
-  }
-}
 
   .post-preview {
     padding-top: 1.5rem;
     padding-bottom: 1rem;
     border-bottom: 1px solid var(--main-border-color);
-  >h1 {
+
+    h1 {
       font-size: 1.4rem;
       margin: 0;
+      ~i { // pinned icon
+        font-size: .86rem;
       }
-  i.far { /* fontawesome icons */
-    font-size: 86%;
     }
+
+    .post-meta {
+      i {
+        font-size: .73rem;
+        &:not(:first-child) { // post-meta icons on the homepage
+          margin-left: 1.5rem;
+        }
+      }
+    }
+
     .post-content {
       margin-top: .6rem;
       margin-bottom: .6rem;
       color: var(--post-list-text-color);
-    >p { /* Make preview shorter in Home page*/
+      >p {
+        /* Make preview shorter on the homepage */
         margin: 0;
         overflow: hidden;
         text-overflow: ellipsis;
@@ -50,6 +48,15 @@
         -webkit-box-orient: vertical;
       }
     }
+
+  } // .post-preview
+
+} // #post-list
+
+.pagination {
+  font-size: 1rem;
+  a:hover {
+    text-decoration: none;
   }
 
   .page-item {
@@ -69,6 +76,9 @@
       border: 1px solid var(--btn-paginator-border-color);
       font-family: 'Lato', sans-serif;
       background-color: var(--button-bg);
+      &:hover {
+        background-color: var(--btn-paginator-hover-color)
+      }
     }
     &.active {
       .page-link {
@@ -91,11 +101,11 @@
       border-radius: 50%;
     }
     &:not(:last-child) {
-    margin-right: 0.6rem;
+      margin-right: 0.7rem;
     }
-
   } // .page-item
 
+} // .pagination
 
 @media all and (max-width: 576px) {
   #post-list .post-meta>span i:not(:first-child) {
@@ -112,16 +122,21 @@
 
 /* Sidebar is visible */
 @media all and (min-width: 831px) {
-  .pagination {
-    font-size: .85rem;
+
+  #post-list {
+    margin-top: 1.5rem;
   }
 
+  .pagination {
+    font-size: .85rem;
     .page-item .page-link {
       width: 2.2rem;
       height: 2.2rem;
     }
   }
 
+}
+
 /* Pannel hidden */
 @media all and (max-width: 1200px) {
   #post-list {

assets/css/page.scss

@@ -0,0 +1,10 @@
+---
+# The default style for layout Page
+# v2.2
+# https://github.com/cotes2020/jekyll-theme-chirpy
+# © 2020 Cotes Chung
+# MIT License
+---
+
+{% include_relative _addon/main.scss %}
+{% include_relative _addon/syntax.scss %}

assets/css/post.scss

@@ -1,13 +1,14 @@
 ---
+# Post-specific style
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
+# © 2019 Cotes Chung
+# MIT License
 ---
-/*!
-  Post-specific style
-  v2.0
-  https://github.com/cotes2020/jekyll-theme-chirpy
-  © 2019 Cotes Chung
-  MIT License
-*/
-@import "_addon/variables";
+
+
+{% include_relative _addon/main.scss %}
+{% include_relative _addon/syntax.scss %}
 
 $prompt-older: "{{ site.data.label.post.button.previous }}";
 $prompt-newer: "{{ site.data.label.post.button.next }}";
@@ -26,28 +27,36 @@ $prompt-newer: "{{ site.data.label.post.button.next }}";
   border-color: var(--btn-border-color);
 }
 
-.post img {
+.author {
+  @include semi-bold;
+}
+
+.post {
+  img {
+    max-width: 100%;
     margin-top: .5rem;
     margin-bottom: 1.5rem;
-  max-width: 100%;
-  height: auto;
-  // filter: drop-shadow(2px 4px 6px rgba(0,0,0,0.08));
     position: relative;
     left: 50%;
     -webkit-transform: translateX(-50%);
     -ms-transform: translateX(-50%);
     transform: translateX(-50%);
   }
+}
 
 .post-tail-wrapper {
-  margin-top: 5rem;
+  margin-top: 4rem;
   border-bottom: 1px double var(--main-border-color);
   font-size: 0.85rem;
 }
 
+.post-tags {
+  line-height: 2rem;
+}
+
 .post-navigation {
   padding-top: 3rem;
-  padding-bottom: 2rem;
+  padding-bottom: 4rem;
 
   .btn {
     @include btn-post-nav;
@@ -118,6 +127,7 @@ $prompt-newer: "{{ site.data.label.post.button.next }}";
 }
 
 #toc-wrapper {
+  margin-top: 7rem;
   border-left: 1px solid rgba(158, 158, 158, 0.17);
   position: -webkit-sticky;
   position: sticky;
@@ -128,9 +138,7 @@ $prompt-newer: "{{ site.data.label.post.button.next }}";
     top: 6rem;
   }
   >h3 {
-    font-size: 1rem;
-    font-family: 'Oswald', sans-serif;
-    color: gray;
+    @include label(inherit, 600);
   }
 }
 
@@ -145,9 +153,7 @@ $prompt-newer: "{{ site.data.label.post.button.next }}";
 
 #related-posts {
   >h3 {
-    color: gray;
-    font-size: 1.1rem;
-    font-family: 'Oswald', sans-serif;
+    @include label(1.1rem, 600);
   }
   .card {
     border: 1px solid var(--card-border-color);
@@ -157,7 +163,7 @@ $prompt-newer: "{{ site.data.label.post.button.next }}";
     -moz-transition: all .3s ease-in-out;
     transition: all .3s ease-in-out;
     h3 {
-      color: var(--label-relate-post);
+      color: var(--text-color);
     }
     &:hover {
       -webkit-transform: translate3d(0, -3px, 0);
@@ -260,7 +266,7 @@ $prompt-newer: "{{ site.data.label.post.button.next }}";
 
 
 .share-label {
-  font-family: 'Oswald', sans-serif;
+  @include label(inherit, 400, inherit);
   &::after {
     content: ":";
   }
@@ -268,8 +274,11 @@ $prompt-newer: "{{ site.data.label.post.button.next }}";
 
 .license-wrapper {
   line-height: 1.2rem;
-  .license-text>a {
+  >a {
     font-weight: 600;
+    &:hover {
+      @extend %link-hover;
+    }
   }
   i {
     font-weight: 400;
@@ -282,10 +291,11 @@ $prompt-newer: "{{ site.data.label.post.button.next }}";
 
 @media all and (max-width: 576px) {
   .post-tail-bottom {
-    -ms-flex-wrap: wrap!important;
-    flex-wrap: wrap!important;
+    -ms-flex-wrap: wrap-reverse!important;
+    flex-wrap: wrap-reverse!important;
     >div:first-child {
-      margin-bottom: 1rem;
+      width: 100%;
+      margin-top: 1rem;
     }
   }
 }

assets/css/tags.scss

@@ -1,13 +1,13 @@
 ---
+# Styles for Tab Tags
+# v2.0
+# https://github.com/cotes2020/jekyll-theme-chirpy
+# © 2019 Cotes Chung
+# MIT License
 ---
 
-/*!
-* Styles for Tab Tags
-* v2.0
-* https://github.com/cotes2020/jekyll-theme-chirpy
-* © 2019 Cotes Chung
-* MIT License
-*/
+
+{% include_relative _addon/main.scss %}
 
 .tag {
   border-radius: 0.7em;

assets/img/favicons/manifest.json

@@ -1,51 +1,58 @@
 ---
 layout: compress
-
+#
 # A part of the Favicons
-# v2.0
+# Chirpy v2.0
 # https://github.com/cotes2020/jekyll-theme-chirpy
 # © 2019 Cotes Chung
 # MIT License
 ---
 
+{% assign icon_url = "/assets/img/favicons" | relative_url %}
+
 {
- "name": "App",
+  "name": "{{ site.title }}",
+  "short_name": "{{ site.title }}",
+  "description": "{{ site.description }}",
   "icons": [
     {
-   "src": "{{ site.baseurl }}\/assets\/img\/favicons\/android-icon-36x36.png",
+      "src": "{{ icon_url }}/android-icon-36x36.png",
       "sizes": "36x36",
-   "type": "image\/png",
+      "type": "image/png",
       "density": "0.75"
     },
     {
-   "src": "{{ site.baseurl }}\/assets\/img\/favicons\/android-icon-48x48.png",
+      "src": "{{ icon_url }}/android-icon-48x48.png",
       "sizes": "48x48",
-   "type": "image\/png",
+      "type": "image/png",
       "density": "1.0"
     },
     {
-   "src": "{{ site.baseurl }}\/assets\/img\/favicons\/android-icon-72x72.png",
+      "src": "{{ icon_url }}/android-icon-72x72.png",
       "sizes": "72x72",
-   "type": "image\/png",
+      "type": "image/png",
       "density": "1.5"
     },
     {
-   "src": "{{ site.baseurl }}\/assets\/img\/favicons\/android-icon-96x96.png",
+      "src": "{{ icon_url }}/android-icon-96x96.png",
       "sizes": "96x96",
-   "type": "image\/png",
+      "type": "image/png",
       "density": "2.0"
     },
     {
-   "src": "{{ site.baseurl }}\/assets\/img\/favicons\/android-icon-144x144.png",
+      "src": "{{ icon_url }}/android-icon-144x144.png",
       "sizes": "144x144",
-   "type": "image\/png",
+      "type": "image/png",
       "density": "3.0"
     },
     {
-   "src": "{{ site.baseurl }}\/assets\/img\/favicons\/android-icon-192x192.png",
+      "src": "{{ icon_url }}/android-icon-192x192.png",
       "sizes": "192x192",
-   "type": "image\/png",
+      "type": "image/png",
       "density": "4.0"
-  }
- ]
+    }],
+    "start_url": "{{ '/index.html' | relative_url }}",
+    "display": "fullscreen",
+    "theme_color": "#2a1e6b",
+    "background_color": "white"
 }

assets/js/_commons.js

@@ -0,0 +1,21 @@
+/*!
+  Aggregation of common JS.
+  Chirpy@2.3
+  https://github.com/cotes2020/jekyll-theme-chirpy
+  © 2020 Cotes Chung
+  MIT License
+*/
+
+{% include_relative _commons/back-to-top.js %}
+
+{% include_relative _commons/search-display.js %}
+
+{% include_relative _commons/sidebar.js %}
+
+{% include_relative _commons/topbar-switch.js %}
+
+{% include_relative _commons/topbar-title.js %}
+
+{% include_relative _commons/copy-link.js %}
+
+{% include_relative _utils/tooltip-loader.js %}

assets/js/_commons/search-display.js

@@ -29,10 +29,8 @@ $(function() {
     return {
       block: function() {
         offset = $(window).scrollTop();
-        $('body').addClass('no-scroll');
       },
       release: function() {
-        $('body').removeClass('no-scroll');
         $('html,body').scrollTop(offset);
       },
       getOffset: function() {

assets/js/_commons/sidebar.js

@@ -0,0 +1,34 @@
+/**
+ * Expand or close the sidebar in mobile screens.
+ * v2.0
+ * https://github.com/cotes2020/jekyll-theme-chirpy
+ * © 2018-2019 Cotes Chung
+ * MIT License
+ */
+
+$(function() {
+
+  var sidebarUtil = (function() {
+    const ATTR_DISPLAY = "sidebar-display";
+    var isExpanded = false;
+    var body = $('body');
+
+    return {
+      toggle: function() {
+        if (isExpanded == false) {
+          body.attr(ATTR_DISPLAY, '');
+        } else {
+          body.removeAttr(ATTR_DISPLAY);
+        }
+
+        isExpanded = !isExpanded;
+      }
+    }
+
+  })();
+
+  $("#sidebar-trigger").click(sidebarUtil.toggle);
+
+  $('#mask').click(sidebarUtil.toggle);
+
+});

assets/js/_commons/topbar-switch.js

@@ -5,6 +5,7 @@
  * © 2018-2019 Cotes Chung
  * MIT License
  */
+
 $(function() {
 
   var didScroll;
@@ -13,7 +14,7 @@ $(function() {
   var topbarHeight = $('#topbar-wrapper').outerHeight();
 
   $(window).scroll(function(event) {
-    if ($("#topbar-title").is(":hidden")) { // Not in small screens
+    if ($("#topbar-title").is(":hidden")) { /* Not in small screens */
       didScroll = true;
     }
   });
@@ -28,12 +29,12 @@ $(function() {
   function hasScrolled() {
     var st = $(this).scrollTop();
 
-    // Make sure they scroll more than delta
+    /* Make sure they scroll more than delta */
     if (Math.abs(lastScrollTop - st) <= delta)
       return;
 
     if (st > lastScrollTop && st > topbarHeight) {
-      // Scroll Down
+      /* Scroll Down */
       $('#topbar-wrapper').removeClass('topbar-down').addClass('topbar-up');
 
       if ( $('#toc-wrapper').length > 0) {
@@ -45,11 +46,11 @@ $(function() {
       }
 
       if ($('#search-input').is(':focus')) {
-        $('#search-input').blur(); // remove focus
+        $('#search-input').blur(); /* remove focus */
       }
 
     } else {
-      // Scroll Up
+      /* Scroll Up */
       if (st + $(window).height() < $(document).height()) {
         $('#topbar-wrapper').removeClass('topbar-up').addClass('topbar-down');
         if ( $('#toc-wrapper').length > 0) {

assets/js/_commons/topbar-title.js

@@ -5,6 +5,7 @@
  * © 2018-2019 Cotes Chung
  * MIT License
 */
+
 $(function() {
 
   var DEFAULT = $("#topbar-title").text().trim();
@@ -18,12 +19,12 @@ $(function(){
     }
   }
 
-  // Replace topbar title while scroll screens.
+  /* Replace topbar title while scroll screens. */
   $(window).scroll(function () {
-    if ($("#post-list").length // in Home page
-      || $("div.post>h1").is(":hidden") // is tab pages
-      || $("#topbar-title").is(":hidden") // not mobile screens
-      || $("#sidebar.sidebar-expand").length) { // when the sidebar trigger is clicked
+    if ($("#post-list").length /* in Home page */
+      || $("div.post>h1").is(":hidden") /* is tab pages */
+      || $("#topbar-title").is(":hidden") /* not mobile screens */
+      || $("#sidebar.sidebar-expand").length) { /* when the sidebar trigger is clicked */
       return false;
     }
 
@@ -36,9 +37,9 @@ $(function(){
         $("#topbar-title").text(DEFAULT);
       }
     }
-  })
+  });
 
-  // Click title remove hover effect.
+  /* Click title remove hover effect. */
   $('#topbar-title').click(function() {
     $('body,html').animate({scrollTop: 0}, 800);
   });

assets/js/_home-post.js

@@ -0,0 +1,22 @@
+/*!
+  JS group for layout Home or Post
+  Chirpy v2.3
+  https://github.com/cotes2020/jekyll-theme-chirpy
+  © 2020 Cotes Chung
+  MIT License
+*/
+
+{% include_relative _commons.js %}
+
+{% include_relative _utils/timeago.js %}
+
+
+{% if site.google_analytics.pv.enabled %}
+
+  const proxyData = '{"url": "{{ site.google_analytics.pv.proxy_endpoint }}"}';
+
+  {% include_relative _utils/pageviews.js %}
+
+  {% include_relative lib/_countUp.min.js %}
+
+{% endif %}

assets/js/_src/_commons/sidebar.js

@@ -1,56 +0,0 @@
-/**
- * Expand or close the sidebar in mobile screens.
- * v2.0
- * https://github.com/cotes2020/jekyll-theme-chirpy
- * © 2018-2019 Cotes Chung
- * MIT License
- */
-$(function(){
-
-  var isExpanded = false;
-
-  $("#sidebar-trigger").click(function() {
-    if (isExpanded == false) {
-      $("#sidebar").addClass("sidebar-expand");
-      openModal();
-      isExpanded = true;
-    }
-  });
-
-  $("#mask").click(function() {
-    $("#sidebar").removeClass("sidebar-expand");
-    closeModal();
-    isExpanded = false;
-  });
-
-  /**
-  * ModalHelper helpers resolve the modal scrolling issue on mobile devices
-  * https://github.com/twbs/bootstrap/issues/15852
-  * requires document.scrollingElement polyfill https://github.com/yangg/scrolling-element
-  */
-  var ModalHelper = (function(bodyCls) {
-    var scrollTop;
-    return {
-      afterOpen: function() {
-        scrollTop = document.scrollingElement.scrollTop;
-        document.body.classList.add(bodyCls);
-        document.body.style.top = -scrollTop + 'px';
-      },
-      beforeClose: function() {
-        document.body.classList.remove(bodyCls);
-        // scrollTop lost after set position:fixed, restore it back.
-        document.scrollingElement.scrollTop = scrollTop;
-        document.body.style.top = '';
-      }
-    };
-  })('no-scroll');
-
-  function openModal() {
-    ModalHelper.afterOpen();
-  }
-
-  function closeModal() {
-    ModalHelper.beforeClose();
-  }
-
-});

assets/js/_utils/category-collapse.js

@@ -10,8 +10,8 @@ $(function() {
   var child_prefix = "l_";
   var parent_prefix = "h_";
 
-  // close up top-category
-  $(".collapse").on("hide.bs.collapse", function() { // Bootstrap collapse events.
+  /* close up top-category */
+  $(".collapse").on("hide.bs.collapse", function() { /* Bootstrap collapse events. */
     var parent_id = parent_prefix + $(this).attr('id').substring(child_prefix.length);
     if (parent_id) {
       $("#" + parent_id + " .far.fa-folder-open").attr("class", "far fa-folder fa-fw");
@@ -20,7 +20,7 @@ $(function() {
     }
   });
 
-  // expand the top category
+  /* expand the top category */
   $(".collapse").on("show.bs.collapse", function() {
     var parent_id = parent_prefix + $(this).attr('id').substring(child_prefix.length);
     if (parent_id) {

assets/js/_utils/pageviews.js

@@ -35,7 +35,7 @@ function countPV(path, rows) {
     if (gaPath == path ||
       gaPath == _v2_url ||
       gaPath.concat('/') == _v2_url ||
-      gaPath.slice(gaPath.lastIndexOf('/') + 1) === fileName) { // old permalink record
+      gaPath.slice(gaPath.lastIndexOf('/') + 1) === fileName) { /* old permalink record */
       count += parseInt(rows[i][1]);
     }
   }
@@ -67,13 +67,13 @@ function displayPageviews(data) {
   var hasInit = getInitStatus();
   var rows = data.rows;
 
-  if ($("#post-list").length > 0) { // the Home page
+  if ($("#post-list").length > 0) { /* the Home page */
     $(".post-preview").each(function() {
-      var path = $(this).children("h1").children("a").attr("href");
+      var path = $(this).children("div").children("h1").children("a").attr("href");
       tacklePV(rows, path, $(this).find('.pageviews'), hasInit);
     });
 
-  } else if ($(".post").length > 0) { // the post
+  } else if ($(".post").length > 0) { /* the post */
     var path = window.location.pathname;
     tacklePV(rows, path, $('#pv'), hasInit);
   }
@@ -94,8 +94,8 @@ var getInitStatus = (function() {
 
 var PvCache = (function() {
   const KEY_PV = "pv";
-  const KEY_CREATION = "pv-created-date";
-  const KEY_PV_TYPE = "pv-type";
+  const KEY_CREATION = "pv_created_date";
+  const KEY_PV_TYPE = "pv_type";
 
   var PvType = {
     ORIGIN: "origin",
@@ -133,12 +133,12 @@ var PvCache = (function() {
     isExpired: function() {
       if (PvCache.isOriginCache() ) {
         let date = new Date(get(KEY_CREATION));
-        date.setDate(date.getDate() + 1); // fetch origin-data every day
+        date.setDate(date.getDate() + 1); /* fetch origin-data every day */
         return Date.now() >= date.getTime();
 
       } else if (PvCache.isProxyCache() ) {
         let date = new Date(get(KEY_CREATION) );
-        date.setHours(date.getHours() + 1); // proxy-data is updated every hour
+        date.setHours(date.getHours() + 1); /* proxy-data is updated every hour */
         return Date.now() >= date.getTime();
       }
       return false;
@@ -148,10 +148,17 @@ var PvCache = (function() {
     },
     newerThan: function(pv) {
       return PvCache.getAllPagevies() > pv.totalsForAllResults["ga:pageviews"];
+    },
+    inspectKeys: function() {
+      if (localStorage.getItem(KEY_PV) == null
+        || localStorage.getItem(KEY_PV_TYPE) == null
+        || localStorage.getItem(KEY_CREATION) == null) {
+        localStorage.clear();
+      }
     }
   };
 
-})(); // PvCache
+})(); /* PvCache */
 
 
 function fetchOriginPageviews(pvData) {
@@ -164,7 +171,7 @@ function fetchOriginPageviews(pvData) {
 
 
 function fetchProxyPageviews() {
-  let proxy = JSON.parse(proxyData); // see file '/assets/data/pv-data.json'
+  let proxy = JSON.parse(proxyData); /* see file '/assets/data/pv-data.json' */
   $.ajax({
     type: 'GET',
     url: proxy.url,
@@ -184,12 +191,14 @@ $(function() {
 
   if ($('.pageviews').length > 0) {
 
-    let originPvData = pageviews ? JSON.parse(pageviews) : undefined;
+    PvCache.inspectKeys();
+
     let cache = PvCache.getData();
 
     if (cache) {
       if (PvCache.isExpired()) {
         if (PvCache.isProxyCache() ) {
+          let originPvData = pageviews ? JSON.parse(pageviews) : undefined;
           if (originPvData) {
             if (PvCache.newerThan(originPvData)) {
               displayPageviews(cache);
@@ -205,7 +214,7 @@ $(function() {
           fetchProxyPageviews();
         }
 
-      } else { // still valid
+      } else { /* still valid */
         displayPageviews(cache);
 
         if (PvCache.isOriginCache() ) {
@@ -215,6 +224,7 @@ $(function() {
       }
 
     } else {
+      let originPvData = pageviews ? JSON.parse(pageviews) : undefined;
       fetchOriginPageviews(originPvData);
       fetchProxyPageviews();
     }

assets/js/_utils/tooltip-loader.js

@@ -7,4 +7,4 @@
 */
 $(function () {
   $('[data-toggle="tooltip"]').tooltip();
-})
+});

assets/js/categories.min.js

@@ -0,0 +1,13 @@
+---
+layout: compress
+
+# JS for layout tab Categories.
+# Chirpy v2.3
+# https://github.com/cotes2020/jekyll-theme-chirpy
+# © 2020 Cotes Chung
+# MIT License
+---
+
+{% include_relative _commons.js %}
+
+{% include_relative _utils/category-collapse.js %}

assets/js/data/cache-list.js

@@ -0,0 +1,111 @@
+---
+layout: compress
+
+# The list to be cached by PWA
+# Chirpy v2.2
+# https://github.com/cotes2020/jekyll-theme-chirpy
+# © 2020 Cotes Chung
+# MIT Licensed
+---
+
+const include = [
+
+  /*--- CSS ---*/
+
+  '{{ "/assets/css/home.css" | relative_url }}',
+  '{{ "/assets/css/categories.css" | relative_url }}',
+  '{{ "/assets/css/tags.css" | relative_url }}',
+  '{{ "/assets/css/archives.css" | relative_url }}',
+  '{{ "/assets/css/page.css" | relative_url }}',
+  '{{ "/assets/css/post.css" | relative_url }}',
+  '{{ "/assets/css/category-tag.css" | relative_url }}',
+  '{{ "/assets/css/lib/bootstrap-toc.min.css" | relative_url }}',
+
+  /*--- Javascripts ---*/
+
+  '{{ "/assets/js/home.min.js" | relative_url }}',
+  '{{ "/assets/js/page.min.js" | relative_url }}',
+  '{{ "/assets/js/post.min.js" | relative_url }}',
+
+  /*--- HTML ---*/
+
+  /* Tabs */
+  {% for tab in site.data.tabs %}
+    {% capture item %}
+      {%- unless tab.name == 'Home' -%}
+        /tabs/{{ tab.name | downcase }}
+      {%- endunless -%}
+      {{- "/" -}}
+    {% endcapture %}
+    '{{ item | relative_url }}',
+  {% endfor %}
+
+  /* The posts of first Home page and recent update list */
+  {% assign post_list = "" | split: "" %}
+  {% assign sum = 0 %}
+
+  {% for post in site.posts %}
+    {% assign post_list = post_list | push: post.url %}
+    {% assign sum = sum | plus: 1 %}
+    {% if sum >= site.paginate %}
+      {% break %}
+    {% endif %}
+  {% endfor %}
+
+  {% include update-list.html %}
+  {% for item in update_list %}
+    {% assign url = item | split: "::" | last | prepend: "/posts/" | append: "/" %}
+    {% assign post_list = post_list | push: url %}
+  {% endfor %}
+
+  {% assign post_list = post_list | uniq %}
+
+  {% for url in post_list %}
+    '{{ url }}',
+  {% endfor %}
+
+  /* Trending tags */
+  {% include trending-tags.html %}
+  {% for tag in trending_tags %}
+    {% capture tag_url %}/tags/{{ tag | downcase | url_encode }}/{% endcapture %}
+    '{{ tag_url | relative_url }}',
+  {% endfor %}
+
+  /*--- Icons ---*/
+
+  {%- capture icon_url -%}
+    {{ "/assets/img/favicons" | relative_url }}
+  {%- endcapture -%}
+  '{{ icon_url }}/favicon.ico',
+  '{{ icon_url }}/apple-icon.png',
+  '{{ icon_url }}/apple-icon-precomposed.png',
+  '{{ icon_url }}/apple-icon-57x57.png',
+  '{{ icon_url }}/apple-icon-60x60.png',
+  '{{ icon_url }}/apple-icon-72x72.png',
+  '{{ icon_url }}/apple-icon-76x76.png',
+  '{{ icon_url }}/apple-icon-114x114.png',
+  '{{ icon_url }}/apple-icon-120x120.png',
+  '{{ icon_url }}/apple-icon-144x144.png',
+  '{{ icon_url }}/apple-icon-152x152.png',
+  '{{ icon_url }}/apple-icon-180x180.png',
+  '{{ icon_url }}/android-icon-192x192.png',
+  '{{ icon_url }}/favicon-32x32.png',
+  '{{ icon_url }}/favicon-96x96.png',
+  '{{ icon_url }}/favicon-16x16.png',
+  '{{ icon_url }}/ms-icon-144x144.png',
+  '{{ icon_url }}/manifest.json',
+  '{{ icon_url }}/browserconfig.xml',
+
+  /*--- Others ---*/
+
+  '{{ "/assets/js/data/search.json" | relative_url }}',
+  '{{ "/404.html" | relative_url }}',
+
+  '{{ "/app.js" | relative_url }}',
+  '{{ "/sw.js" | relative_url }}'
+];
+
+const exclude = [
+  '/assets/js/data/pv-cache.js',
+  '/img.shields.io/'
+];

assets/js/data/pv-cache.js

@@ -2,11 +2,9 @@
 layout: compress
 ---
 
-const proxyData = '{"url": "{{ site.google_analytics.pv.proxy_endpoint }}"}';
-
 {%- capture pv_data -%}
   {%- if site.google_analytics.pv.cache and site.google_analytics.pv.enabled -%}
-    {% include_relative pageviews.json %}
+    {% include_relative _pageviews.json %}
   {%- endif -%}
 {%- endcapture -%}
 

assets/js/data/search.json

@@ -10,7 +10,9 @@ layout: compress
     "categories": "{{ post.categories | join: ', '}}",
     "tags": "{{ post.tags | join: ', ' }}",
     "date": "{{ post.date }}",
-    "snippet": "{{ post.content | strip_html | strip_newlines | remove_chars | escape | truncate: 300 }}"
+    {% assign _content = post.content %}
+    {% include no-linenos.html %}
+    "snippet": "{{ _content | strip_html | strip_newlines | remove_chars | escape | truncate: 300 | replace: '\', '\\\\' }}"
   }{% unless forloop.last %},{% endunless %}
   {% endfor %}
 ]

assets/js/dist/_commons/back-to-top.min.js

@@ -1 +0,0 @@
-$(window).scroll(function(){if($(this).scrollTop()>50&&$("#sidebar-trigger").css("display")=="none"){$("#back-to-top").fadeIn()}else{$("#back-to-top").fadeOut()}});$(function(){$("#back-to-top").click(function(){$("body,html").animate({scrollTop:0},800);return false})});

assets/js/dist/_commons/copy-link.min.js

@@ -1 +0,0 @@
-function copyLink(a){if(!a||0===a.length){a=window.location.href}var b=$("<input>");$("body").append(b);b.val(a).select();document.execCommand("copy");b.remove();alert("Link copied successfully!")};

assets/js/dist/_commons/search-display.min.js

@@ -1 +0,0 @@
-$(function(){var j=$("#sidebar-trigger");var o=$("#search-trigger");var h=$("#search-cancel");var b=$("#search-cleaner");var e=$("#main");var c=$("#topbar-title");var k=$("#search-wrapper");var i=$("#search-result-wrapper");var g=$("#search-results");var l=$("#search-input");var a=$("#search-hints");var d=(function(){var p=0;return{block:function(){p=$(window).scrollTop();$("body").addClass("no-scroll")},release:function(){$("body").removeClass("no-scroll");$("html,body").scrollTop(p)},getOffset:function(){return p}}})();var m=(function(){return{on:function(){j.addClass("unloaded");c.addClass("unloaded");o.addClass("unloaded");k.addClass("d-flex");h.addClass("loaded")},off:function(){h.removeClass("loaded");k.removeClass("d-flex");j.removeClass("unloaded");c.removeClass("unloaded");o.removeClass("unloaded")}}})();var n=(function(){var p=false;return{on:function(){if(!p){i.removeClass("unloaded");e.addClass("hidden");p=true;d.block()}},off:function(){if(p){g.empty();if(a.hasClass("unloaded")){a.removeClass("unloaded")}i.addClass("unloaded");b.removeClass("visable");e.removeClass("hidden");l.val("");p=false;d.release()}},isVisable:function(){return p}}})();function f(){return h.hasClass("loaded")}o.click(function(){m.on();n.on();l.focus()});h.click(function(){m.off();n.off()});l.focus(function(){k.addClass("input-focus")});l.focusout(function(){k.removeClass("input-focus")});l.on("keyup",function(p){if(p.keyCode==8&&l.val()==""){if(!f()){n.off()}else{a.removeClass("unloaded")}}else{if(l.val()!=""){n.on();if(!b.hasClass("visible")){b.addClass("visable")}if(f()){a.addClass("unloaded")}}}});b.on("click",function(){l.val("");if(f()){a.removeClass("unloaded");g.empty()}else{n.off()}l.focus();b.removeClass("visable")})});

assets/js/dist/_commons/sidebar.min.js

@@ -1 +0,0 @@
-$(function(){var d=false;$("#sidebar-trigger").click(function(){if(d==false){$("#sidebar").addClass("sidebar-expand");b();d=true}});$("#mask").click(function(){$("#sidebar").removeClass("sidebar-expand");c();d=false});var a=(function(e){var f;return{afterOpen:function(){f=document.scrollingElement.scrollTop;document.body.classList.add(e);document.body.style.top=-f+"px"},beforeClose:function(){document.body.classList.remove(e);document.scrollingElement.scrollTop=f;document.body.style.top=""}}})("no-scroll");function b(){a.afterOpen()}function c(){a.beforeClose()}});

assets/js/dist/_commons/topbar-switch.min.js

@@ -1 +0,0 @@
-$(function(){var d;var c=0;var e=5;var b=$("#topbar-wrapper").outerHeight();$(window).scroll(function(f){if($("#topbar-title").is(":hidden")){d=true}});setInterval(function(){if(d){a();d=false}},250);function a(){var f=$(this).scrollTop();if(Math.abs(c-f)<=e){return}if(f>c&&f>b){$("#topbar-wrapper").removeClass("topbar-down").addClass("topbar-up");if($("#toc-wrapper").length>0){$("#toc-wrapper").removeClass("topbar-down")}if($(".access").length>0){$(".access").removeClass("topbar-down")}if($("#search-input").is(":focus")){$("#search-input").blur()}}else{if(f+$(window).height()<$(document).height()){$("#topbar-wrapper").removeClass("topbar-up").addClass("topbar-down");if($("#toc-wrapper").length>0){$("#toc-wrapper").addClass("topbar-down")}if($(".access").length>0){$(".access").addClass("topbar-down")}}}c=f}});

assets/js/dist/_commons/topbar-title.min.js

@@ -1 +0,0 @@
-$(function(){var a=$("#topbar-title").text().trim();var b=($("div.post>h1").length>0)?$("div.post>h1").text().trim():$("h1").text().trim();if($("#page-category").length||$("#page-tag").length){if(/\s/.test(b)){b=b.replace(/[0-9]/g,"").trim()}}$(window).scroll(function(){if($("#post-list").length||$("div.post>h1").is(":hidden")||$("#topbar-title").is(":hidden")||$("#sidebar.sidebar-expand").length){return false}if($(this).scrollTop()>=95){if($("#topbar-title").text()!=b){$("#topbar-title").text(b)}}else{if($("#topbar-title").text()!=a){$("#topbar-title").text(a)}}});$("#topbar-title").click(function(){$("body,html").animate({scrollTop:0},800)})});

assets/js/dist/category-collapse.min.js

@@ -1 +0,0 @@
-$(function(){var b="l_";var a="h_";$(".collapse").on("hide.bs.collapse",function(){var c=a+$(this).attr("id").substring(b.length);if(c){$("#"+c+" .far.fa-folder-open").attr("class","far fa-folder fa-fw");$("#"+c+" i.fas").addClass("rotate");$("#"+c).removeClass("hide-border-bottom")}});$(".collapse").on("show.bs.collapse",function(){var c=a+$(this).attr("id").substring(b.length);if(c){$("#"+c+" .far.fa-folder").attr("class","far fa-folder-open fa-fw");$("#"+c+" i.fas").removeClass("rotate");$("#"+c).addClass("hide-border-bottom")}})});

assets/js/dist/commons.js

@@ -1,12 +0,0 @@
----
-# Aggregation of common JS.
-# © 2018-2019 Cotes Chung
-# MIT License
----
-
-{% include_relative _commons/back-to-top.min.js %}
-{% include_relative _commons/search-display.min.js %}
-{% include_relative _commons/sidebar.min.js %}
-{% include_relative _commons/topbar-switch.min.js %}
-{% include_relative _commons/topbar-title.min.js %}
-{% include_relative _commons/copy-link.min.js %}

assets/js/dist/pageviews.min.js

@@ -1 +0,0 @@
-function countUp(b,a,d){if(b<a){var c=new CountUp(d,b,a);if(!c.error){c.start()}else{console.error(c.error)}}}function countPV(f,e){var g=f.replace(/\/posts\//g,"").replace(/\//g,".html");var d=0;var c=f.replace(/posts\//g,"");for(var b=0;b<e.length;++b){var a=e[b][0];if(a==f||a==c||a.concat("/")==c||a.slice(a.lastIndexOf("/")+1)===g){d+=parseInt(e[b][1])}}return d}function tacklePV(e,f,d,b){var c=countPV(f,e);c=(c==0?1:c);if(!b){d.text(new Intl.NumberFormat().format(c))}else{var a=parseInt(d.text().replace(/,/g,""));if(c>a){countUp(a,c,d.attr("id"))}}}function displayPageviews(c){if(c===undefined){return}var a=getInitStatus();var b=c.rows;if($("#post-list").length>0){$(".post-preview").each(function(){var e=$(this).children("h1").children("a").attr("href");tacklePV(b,e,$(this).find(".pageviews"),a)})}else{if($(".post").length>0){var d=window.location.pathname;tacklePV(b,d,$("#pv"),a)}}}var getInitStatus=(function(){var a=false;return function(){let ret=a;if(!a){a=true}return ret}})();var PvCache=(function(){const e="pv";const b="pv-created-date";const d="pv-type";var c={ORIGIN:"origin",PROXY:"proxy"};function a(g){return localStorage.getItem(g)}function f(g,h){localStorage.setItem(g,h)}return{getData:function(){return JSON.parse(localStorage.getItem(e))},saveOriginCache:function(g){f(e,g);f(d,c.ORIGIN);f(b,new Date().toJSON())},saveProxyCache:function(g){f(e,g);f(d,c.PROXY);f(b,new Date().toJSON())},isOriginCache:function(){return a(d)==c.ORIGIN},isProxyCache:function(){return a(d)==c.PROXY},isExpired:function(){if(PvCache.isOriginCache()){let date=new Date(a(b));date.setDate(date.getDate()+1);return Date.now()>=date.getTime()}else{if(PvCache.isProxyCache()){let date=new Date(a(b));date.setHours(date.getHours()+1);return Date.now()>=date.getTime()}}return false},getAllPagevies:function(){return PvCache.getData().totalsForAllResults["ga:pageviews"]},newerThan:function(g){return PvCache.getAllPagevies()>g.totalsForAllResults["ga:pageviews"]}}})();function fetchOriginPageviews(a){if(a===undefined){return}displayPageviews(a);PvCache.saveOriginCache(JSON.stringify(a))}function fetchProxyPageviews(){let proxy=JSON.parse(proxyData);$.ajax({type:"GET",url:proxy.url,dataType:"jsonp",jsonpCallback:"displayPageviews",success:function(b,c,a){PvCache.saveProxyCache(JSON.stringify(b))},error:function(a,c,b){console.log("Failed to load pageviews from proxy server: "+b)}})}$(function(){if($(".pageviews").length>0){let originPvData=pageviews?JSON.parse(pageviews):undefined;let cache=PvCache.getData();if(cache){if(PvCache.isExpired()){if(PvCache.isProxyCache()){if(originPvData){if(PvCache.newerThan(originPvData)){displayPageviews(cache)}else{fetchOriginPageviews(originPvData)}}fetchProxyPageviews()}else{if(PvCache.isOriginCache()){fetchOriginPageviews(originPvData);fetchProxyPageviews()}}}else{displayPageviews(cache);if(PvCache.isOriginCache()){fetchProxyPageviews()}}}else{fetchOriginPageviews(originPvData);fetchProxyPageviews()}}});

assets/js/dist/timeago.min.js

@@ -1 +0,0 @@
-$(function(){function d(h,g){var f=new Date();var o=new Date(h);var n=Math.floor((f-o)/1000);var l=Math.floor(n/31536000);if(l>=1){return l+" year"+(l>1?"s":"")+" ago"}var k=Math.floor(n/2592000);if(k>=1){return k+" month"+(k>1?"s":"")+" ago"}var e=Math.floor(n/604800);if(e>=1){return e+" week"+(e>1?"s":"")+" ago"}var m=Math.floor(n/86400);if(m>=1){return m+" day"+(m>1?"s":"")+" ago"}var j=Math.floor(n/3600);if(j>=1){return j+" hour"+(j>1?"s":"")+" ago"}var i=Math.floor(n/60);if(i>=1){return i+" minute"+(i>1?"s":"")+" ago"}return(g?"just":"Just")+" now"}function c(){$(".timeago").each(function(){if($(this).children("i").length>0){var g=$(this).hasClass("lastmod");var f=$(this).children("i");var e=f.text();$(this).text(d(e,g));$(this).append(f)}});if(a==0&&b!=undefined){clearInterval(b)}return a}var a=$(".timeago").length;if(a==0){return}if(c()>0){a=$(".timeago").length;var b=setInterval(c,60000)}});

assets/js/dist/toc.min.js

@@ -1 +0,0 @@
-$(function(){if($("#post-wrapper .post-content h1").length==0&&$("#post-wrapper .post-content h2").length==0){$("#toc-wrapper").addClass("unloaded")}});

assets/js/dist/tooltip-loader.min.js

@@ -1 +0,0 @@
-$(function(){$('[data-toggle="tooltip"]').tooltip()});

assets/js/home.min.js

@@ -0,0 +1,11 @@
+---
+layout: compress
+
+# JS for layout home.
+# Chirpy v2.3
+# https://github.com/cotes2020/jekyll-theme-chirpy
+# © 2020 Cotes Chung
+# MIT License
+---
+
+{% include_relative _home-post.js %}