mdformat


Namemdformat JSON
Version 0.7.19 PyPI version JSON
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home_pageNone
SummaryCommonMark compliant Markdown formatter
upload_time2024-11-18 07:01:00
maintainerNone
docs_urlNone
authorNone
requires_python>=3.9
licenseMIT License Copyright (c) 2021 Taneli Hukkinen Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
keywords mdformat markdown commonmark formatter pre-commit
VCS
bugtrack_url
requirements No requirements were recorded.
Travis-CI No Travis.
coveralls test coverage No coveralls.
            <div align="center">

[![Documentation Status](https://readthedocs.org/projects/mdformat/badge/?version=latest)](https://mdformat.readthedocs.io/en/latest/?badge=latest)
[![Build Status](https://github.com/executablebooks/mdformat/workflows/Tests/badge.svg?branch=master)](https://github.com/executablebooks/mdformat/actions?query=workflow%3ATests+branch%3Amaster+event%3Apush)
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# ![mdformat](https://raw.githubusercontent.com/executablebooks/mdformat/master/docs/_static/logo.svg)

> CommonMark compliant Markdown formatter

</div>

<!-- start mini-description -->

Mdformat is an opinionated Markdown formatter
that can be used to enforce a consistent style in Markdown files.
Mdformat is a Unix-style command-line tool as well as a Python library.

<!-- end mini-description -->

Find out more in the [docs](https://mdformat.readthedocs.io).

<!-- start installing -->

## Installing

Install with [CommonMark](https://spec.commonmark.org/current/) support:

```bash
pipx install mdformat
```

Install with [GitHub Flavored Markdown (GFM)](https://github.github.com/gfm/) support:

```bash
pipx install mdformat
pipx inject mdformat mdformat-gfm
```

Note that GitHub's Markdown renderer supports syntax extensions not included in the GFM specification.
For full GitHub support do:

```bash
pipx install mdformat
pipx inject mdformat mdformat-gfm mdformat-frontmatter mdformat-footnote mdformat-gfm-alerts
```

Install with [Markedly Structured Text (MyST)](https://myst-parser.readthedocs.io/en/latest/using/syntax.html) support:

```bash
pipx install mdformat
pipx inject mdformat mdformat-myst
```

<!-- end installing -->

<!-- start cli-usage -->

## Command line usage

### Format files

Format files `README.md` and `CHANGELOG.md` in place

```bash
mdformat README.md CHANGELOG.md
```

Format `.md` files in current working directory recursively

```bash
mdformat .
```

Read Markdown from standard input until `EOF`.
Write formatted Markdown to standard output.

```bash
mdformat -
```

### Check formatting

```bash
mdformat --check README.md CHANGELOG.md
```

This will not apply any changes to the files.
If a file is not properly formatted, the exit code will be non-zero.

### Options

```console
foo@bar:~$ mdformat --help
usage: mdformat [-h] [--check] [--version] [--number] [--wrap {keep,no,INTEGER}]
                [--end-of-line {lf,crlf,keep}] [--exclude PATTERN]
                [--extensions EXTENSION] [--codeformatters LANGUAGE]
                [paths ...]

CommonMark compliant Markdown formatter

positional arguments:
  paths                 files to format

options:
  -h, --help            show this help message and exit
  --check               do not apply changes to files
  --version             show program's version number and exit
  --number              apply consecutive numbering to ordered lists
  --wrap {keep,no,INTEGER}
                        paragraph word wrap mode (default: keep)
  --end-of-line {lf,crlf,keep}
                        output file line ending mode (default: lf)
  --exclude PATTERN     exclude files that match the Unix-style glob pattern (multiple allowed)
  --extensions EXTENSION
                        require and enable an extension plugin (multiple allowed) (use
                        `--no-extensions` to disable) (default: all enabled)
  --codeformatters LANGUAGE
                        require and enable a code formatter plugin (multiple allowed)
                        (use `--no-codeformatters` to disable) (default: all enabled)
```

The `--exclude` option is only available on Python 3.13+.

<!-- end cli-usage -->

## Documentation

This README merely provides a quickstart guide for the command line interface.
For more information refer to the [documentation](https://mdformat.readthedocs.io).
Here's a few pointers to get you started:

- [Style guide](https://mdformat.readthedocs.io/en/stable/users/style.html)
- [Python API usage](https://mdformat.readthedocs.io/en/stable/users/installation_and_usage.html#python-api-usage)
- [Usage as a pre-commit hook](https://mdformat.readthedocs.io/en/stable/users/installation_and_usage.html#usage-as-a-pre-commit-hook)
- [Plugin usage](https://mdformat.readthedocs.io/en/stable/users/plugins.html)
- [Plugin development guide](https://mdformat.readthedocs.io/en/stable/contributors/contributing.html)
- [List of code block formatter plugins](https://mdformat.readthedocs.io/en/stable/users/plugins.html#existing-plugins)
- [List of parser extension plugins](https://mdformat.readthedocs.io/en/stable/users/plugins.html#id1)
- [Changelog](https://mdformat.readthedocs.io/en/stable/users/changelog.html)

<!-- start faq -->

## Frequently Asked Questions

### Why does mdformat backslash escape special syntax specific to MkDocs / Hugo / Obsidian / GitHub / some other Markdown engine?

Mdformat is a CommonMark formatter.
It doesn't have out-of-the-box support for syntax other than what is defined in [the CommonMark specification](https://spec.commonmark.org/current/).

The custom syntax that these Markdown engines introduce typically redefines the meaning of
angle brackets, square brackets, parentheses, hash character — characters that are special in CommonMark.
Mdformat often resorts to backslash escaping these characters to ensure its formatting changes never alter a rendered document.

Additionally some engines, namely MkDocs,
[do not support](https://github.com/mkdocs/mkdocs/issues/1835) CommonMark to begin with,
so incompatibilities are unavoidable.

Luckily mdformat is extensible by plugins.
For many Markdown engines you'll find support by searching
[the plugin docs](https://mdformat.readthedocs.io/en/stable/users/plugins.html)
or [mdformat GitHub topic](https://github.com/topics/mdformat).

You may also want to consider a documentation generator that adheres to CommonMark as its base syntax
e.g. [mdBook](https://rust-lang.github.io/mdBook/)
or [Sphinx with Markdown](https://www.sphinx-doc.org/en/master/usage/markdown.html).

### Why not use [Prettier](https://github.com/prettier/prettier) instead?

Mdformat is pure Python code!
Python is pre-installed on macOS and virtually any Linux distribution,
meaning that typically little to no additional installations are required to run mdformat.
This argument also holds true when using together with
[pre-commit](https://github.com/pre-commit/pre-commit) (also Python).
Prettier on the other hand requires Node.js/npm.

Prettier suffers from
[numerous](https://github.com/prettier/prettier/issues?q=is%3Aopen+label%3Alang%3Amarkdown+label%3Atype%3Abug+)
bugs,
many of which cause changes in Markdown AST and rendered HTML.
Many of these bugs are a consequence of using
[`remark-parse`](https://github.com/remarkjs/remark/tree/main/packages/remark-parse)
v8.x as Markdown parser which,
according to the author themselves,
is [inferior to markdown-it](https://github.com/remarkjs/remark/issues/75#issuecomment-143532326) used by mdformat.
`remark-parse` v9.x is advertised as CommonMark compliant
and presumably would fix many of the issues,
but is not used by Prettier (v3.3.3) yet.

Prettier (v3.3.3), being able to format many languages other than Markdown,
is a large package with 73 direct dependencies
(mdformat only has one in Python 3.11+).
This can be a disadvantage in many environments,
one example being size optimized Docker images.

Mdformat's parser extension plugin API allows not only customization of the Markdown specification in use,
but also advanced features like [automatic table of contents generation](https://github.com/hukkin/mdformat-toc).
Also provided is a code formatter plugin API enabling integration of embedded code formatting for any programming language.

### What's wrong with the mdformat logo? It renders incorrectly and is just terrible in general.

Nope, the logo is actually pretty great – you're terrible.
The logo is more a piece of art than a logo anyways,
depicting the horrors of poorly formatted text documents.
I made it myself!

That said, if you have any graphic design skills and want to contribute a revised version, a PR is more than welcome 😄.

<!-- end faq -->

            

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    "description": "<div align=\"center\">\n\n[![Documentation Status](https://readthedocs.org/projects/mdformat/badge/?version=latest)](https://mdformat.readthedocs.io/en/latest/?badge=latest)\n[![Build Status](https://github.com/executablebooks/mdformat/workflows/Tests/badge.svg?branch=master)](https://github.com/executablebooks/mdformat/actions?query=workflow%3ATests+branch%3Amaster+event%3Apush)\n[![codecov.io](https://codecov.io/gh/executablebooks/mdformat/branch/master/graph/badge.svg)](https://codecov.io/gh/executablebooks/mdformat)\n[![PyPI version](https://img.shields.io/pypi/v/mdformat)](https://pypi.org/project/mdformat)\n\n# ![mdformat](https://raw.githubusercontent.com/executablebooks/mdformat/master/docs/_static/logo.svg)\n\n> CommonMark compliant Markdown formatter\n\n</div>\n\n<!-- start mini-description -->\n\nMdformat is an opinionated Markdown formatter\nthat can be used to enforce a consistent style in Markdown files.\nMdformat is a Unix-style command-line tool as well as a Python library.\n\n<!-- end mini-description -->\n\nFind out more in the [docs](https://mdformat.readthedocs.io).\n\n<!-- start installing -->\n\n## Installing\n\nInstall with [CommonMark](https://spec.commonmark.org/current/) support:\n\n```bash\npipx install mdformat\n```\n\nInstall with [GitHub Flavored Markdown (GFM)](https://github.github.com/gfm/) support:\n\n```bash\npipx install mdformat\npipx inject mdformat mdformat-gfm\n```\n\nNote that GitHub's Markdown renderer supports syntax extensions not included in the GFM specification.\nFor full GitHub support do:\n\n```bash\npipx install mdformat\npipx inject mdformat mdformat-gfm mdformat-frontmatter mdformat-footnote mdformat-gfm-alerts\n```\n\nInstall with [Markedly Structured Text (MyST)](https://myst-parser.readthedocs.io/en/latest/using/syntax.html) support:\n\n```bash\npipx install mdformat\npipx inject mdformat mdformat-myst\n```\n\n<!-- end installing -->\n\n<!-- start cli-usage -->\n\n## Command line usage\n\n### Format files\n\nFormat files `README.md` and `CHANGELOG.md` in place\n\n```bash\nmdformat README.md CHANGELOG.md\n```\n\nFormat `.md` files in current working directory recursively\n\n```bash\nmdformat .\n```\n\nRead Markdown from standard input until `EOF`.\nWrite formatted Markdown to standard output.\n\n```bash\nmdformat -\n```\n\n### Check formatting\n\n```bash\nmdformat --check README.md CHANGELOG.md\n```\n\nThis will not apply any changes to the files.\nIf a file is not properly formatted, the exit code will be non-zero.\n\n### Options\n\n```console\nfoo@bar:~$ mdformat --help\nusage: mdformat [-h] [--check] [--version] [--number] [--wrap {keep,no,INTEGER}]\n                [--end-of-line {lf,crlf,keep}] [--exclude PATTERN]\n                [--extensions EXTENSION] [--codeformatters LANGUAGE]\n                [paths ...]\n\nCommonMark compliant Markdown formatter\n\npositional arguments:\n  paths                 files to format\n\noptions:\n  -h, --help            show this help message and exit\n  --check               do not apply changes to files\n  --version             show program's version number and exit\n  --number              apply consecutive numbering to ordered lists\n  --wrap {keep,no,INTEGER}\n                        paragraph word wrap mode (default: keep)\n  --end-of-line {lf,crlf,keep}\n                        output file line ending mode (default: lf)\n  --exclude PATTERN     exclude files that match the Unix-style glob pattern (multiple allowed)\n  --extensions EXTENSION\n                        require and enable an extension plugin (multiple allowed) (use\n                        `--no-extensions` to disable) (default: all enabled)\n  --codeformatters LANGUAGE\n                        require and enable a code formatter plugin (multiple allowed)\n                        (use `--no-codeformatters` to disable) (default: all enabled)\n```\n\nThe `--exclude` option is only available on Python 3.13+.\n\n<!-- end cli-usage -->\n\n## Documentation\n\nThis README merely provides a quickstart guide for the command line interface.\nFor more information refer to the [documentation](https://mdformat.readthedocs.io).\nHere's a few pointers to get you started:\n\n- [Style guide](https://mdformat.readthedocs.io/en/stable/users/style.html)\n- [Python API usage](https://mdformat.readthedocs.io/en/stable/users/installation_and_usage.html#python-api-usage)\n- [Usage as a pre-commit hook](https://mdformat.readthedocs.io/en/stable/users/installation_and_usage.html#usage-as-a-pre-commit-hook)\n- [Plugin usage](https://mdformat.readthedocs.io/en/stable/users/plugins.html)\n- [Plugin development guide](https://mdformat.readthedocs.io/en/stable/contributors/contributing.html)\n- [List of code block formatter plugins](https://mdformat.readthedocs.io/en/stable/users/plugins.html#existing-plugins)\n- [List of parser extension plugins](https://mdformat.readthedocs.io/en/stable/users/plugins.html#id1)\n- [Changelog](https://mdformat.readthedocs.io/en/stable/users/changelog.html)\n\n<!-- start faq -->\n\n## Frequently Asked Questions\n\n### Why does mdformat backslash escape special syntax specific to MkDocs / Hugo / Obsidian / GitHub / some other Markdown engine?\n\nMdformat is a CommonMark formatter.\nIt doesn't have out-of-the-box support for syntax other than what is defined in [the CommonMark specification](https://spec.commonmark.org/current/).\n\nThe custom syntax that these Markdown engines introduce typically redefines the meaning of\nangle brackets, square brackets, parentheses, hash character \u2014 characters that are special in CommonMark.\nMdformat often resorts to backslash escaping these characters to ensure its formatting changes never alter a rendered document.\n\nAdditionally some engines, namely MkDocs,\n[do not support](https://github.com/mkdocs/mkdocs/issues/1835) CommonMark to begin with,\nso incompatibilities are unavoidable.\n\nLuckily mdformat is extensible by plugins.\nFor many Markdown engines you'll find support by searching\n[the plugin docs](https://mdformat.readthedocs.io/en/stable/users/plugins.html)\nor [mdformat GitHub topic](https://github.com/topics/mdformat).\n\nYou may also want to consider a documentation generator that adheres to CommonMark as its base syntax\ne.g. [mdBook](https://rust-lang.github.io/mdBook/)\nor [Sphinx with Markdown](https://www.sphinx-doc.org/en/master/usage/markdown.html).\n\n### Why not use [Prettier](https://github.com/prettier/prettier) instead?\n\nMdformat is pure Python code!\nPython is pre-installed on macOS and virtually any Linux distribution,\nmeaning that typically little to no additional installations are required to run mdformat.\nThis argument also holds true when using together with\n[pre-commit](https://github.com/pre-commit/pre-commit) (also Python).\nPrettier on the other hand requires Node.js/npm.\n\nPrettier suffers from\n[numerous](https://github.com/prettier/prettier/issues?q=is%3Aopen+label%3Alang%3Amarkdown+label%3Atype%3Abug+)\nbugs,\nmany of which cause changes in Markdown AST and rendered HTML.\nMany of these bugs are a consequence of using\n[`remark-parse`](https://github.com/remarkjs/remark/tree/main/packages/remark-parse)\nv8.x as Markdown parser which,\naccording to the author themselves,\nis [inferior to markdown-it](https://github.com/remarkjs/remark/issues/75#issuecomment-143532326) used by mdformat.\n`remark-parse` v9.x is advertised as CommonMark compliant\nand presumably would fix many of the issues,\nbut is not used by Prettier (v3.3.3) yet.\n\nPrettier (v3.3.3), being able to format many languages other than Markdown,\nis a large package with 73 direct dependencies\n(mdformat only has one in Python 3.11+).\nThis can be a disadvantage in many environments,\none example being size optimized Docker images.\n\nMdformat's parser extension plugin API allows not only customization of 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