Python-Markdown Forge-Links Extension

This is¹ a fork of the Python-Markdown Github-Links Extension for use with your Forgejo instance or hosted service, or any other software forge, that uses the same URL patterns.

Installation

To install the extension, run the following command:

pip install mdx-forge-links

Usage

To use the extension, simply include its name in the list of extensions passed to Python-Markdown.

import markdown

markdown.markdown(src, extensions=['mdx_forge_links'])

Or, with MkDocs, add mdx_forge_links to the markdown_extensions setting.

Configuration Options

To set configuration options, you may pass them to Markdown's extension_configs keyword...

markdown.markdown(
    src,
    extensions=['mdx_forge_links'],
    extension_configs={
        'mdx_forge_links': {
            'user': 'foo',
            'repo': 'bar',
            'base_url': 'https://codeberg.org',
        }
    },
)

... or you may import and pass the configs directly to an instance of the mdx_forge_links.ForgeLinks class...

from mdx_forge_links import ForgeLinks

markdown.markdown(
    src,
    extensions=[ForgeLinks(user='foo', repo='bar', base_url='https://codeberg.org')],
)

... or, with MkDocs...

markdown_extensions:
  - mdx_forge_links:
      user: foo
      repo: bar
      base_url: https://codeberg.org

The following configuration options are available:

user

A user name or organization. If no user or organization is specified in a link, then the value of this option will be used.

repo

A repository. If no repository is specified in a link, then the value of this option will be used.

base_url

The base URL of the server for the repository (e.g. https://codeberg.org).

Syntax

This extension implements shorthand to specify links to your software forge in various ways.

All links in the generated HTML are assigned a forge-link class as well as a class unique to that type of link. See each type for the specific class assigned.

Mentions

Link directly to a user, organization or repository. Note that no verification is made that an actual user, organization or repository exists. As the syntax does not differentiate between users and organizations, all organizations are assumed to be users. However, this assumption is only reflected in the title of a link.

Mentions use the format @{user} to link to a user or organization and @{user}/{repo} to link to a repository. The defaults defined in the configuration options are ignored by mentions. A mention may be escaped by adding a backslash immediately before the at sign (@).

All mentions are assigned the forge-mention class.

The following table provides some examples:

shorthand	href	rendered result
@foo	https://codeberg.org/foo	@foo
@foo/bar	https://codeberg.org/foo/bar	@foo/bar
\@foo		@foo
\@foo/bar		@foo/bar

Issues

Link directly to an issue or pull request (PR). Note that no verification is made that an actual issue or PR exists. As the syntax does not differentiate between Issues and PRs, all URLs point to "issues". Fortunately, GitHub will properly redirect an issue URL to a PR URL if appropriate.

Issue links use the format #{num} or {user}/{repo}#{num}. {num} is the number assigned to the issue or PR. {user} and {repo} will use the defaults defined in the configuration options if not provided. An issue link may be escaped by adding a backslash immediately before the hash mark (#).

All issue links are assigned the forge-issue class.

The following table provides various examples (with the defaults set as user='user', repo='repo', base_url='https://codeberg.org'):

shorthand	href	rendered result
#123	https://codeberg.org/user/repo/issues/123	#123
foo/bar#123	https://codeberg.org/foo/bar/issues/123	foo/bar#123
\#123		#123
foo/bar\#123		foo/bar#123

Commits

Link directly to a commit. Note that no verification is made that an actual commit exists.

Commit links consist of a complete 40 character SHA hash and may optionally be prefaced by {user}@ or {user/repo}@. {user} and {repo} will use the defaults defined in the configuration options if not provided. To avoid a 40 character hash from being linked, wrap it in a code span.

All commit links are assigned the forge-commit class.

The following table provides various examples (with the defaults set as user='user', repo='repo', base_url='https://codeberg.org'):

shorthand	href	rendered result
72df691791fb36f00cf5363fefe757c8d3042656	https://codeberg.org/user/repo/commit/72df691791fb36f00cf5363fefe757c8d3042656	72df691
foo@72df691791fb36f00cf5363fefe757c8d3042656	https://codeberg.org/foo/repo/commit/72df691791fb36f00cf5363fefe757c8d3042656	foo@72df691
foo/bar@72df691791fb36f00cf5363fefe757c8d3042656	https://codeberg.org/foo/bar/commit/72df691791fb36f00cf5363fefe757c8d3042656	foo/bar@72df691
`72df691791fb36f00cf5363fefe757c8d3042656`		72df691791fb36f00cf5363fefe757c8d3042656

License

The Python-Markdown Forge-Links Extension is licensed under the BSD License as defined in LICENSE.

Changelog

[Unreleased]

Added

• Test with Python 3.14.

[0.5] - 2025-07-10

Initial release (based on Python-Markdown Github-Links Extension 0.4).

Added

• Noxfile for running linters, tests, and coverage with Nox.
• Documentation on usage with MkDocs.
• Support for current versions of Python.

Changed

• Package, extension, and class names.
• Build package with Poetry instead of setuptools.

Removed

• "GitHub" from link titles.
• GitHub workflows.
• Support for deprecated versions of Python.

---

1. As suggested by the author. ↩︎