jekyll-theme-chirpy/_includes/post-summary.html

{%- comment -%}
  Get the post's description or body content.

  Arguments:
    full_text: If true, return the full content. Default is false.
    max_length: The maximum length of the returned content. Default is 200.
{%- endcomment -%}

{%- if post.description and include.full_text != true -%}
  {{- post.description -}}
{%- else -%}
  {%- comment -%} Remove the line numbers from the code snippet. {%- endcomment -%}

  {%- assign content = post.content -%}

  {%- 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 -%}

  {%- assign content = content
    | markdownify
    | strip_html
    | newline_to_br
    | replace: '<br />', ' '
    | strip_newlines
    | strip
  -%}

  {%- unless include.full_text -%}
    {%- assign max_length = include.max_length | default: 200 -%}
    {%- assign content = content | truncate: max_length -%}
  {%- endunless -%}

  {{- content -}}
{%- endif -%}