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Changelog

0.18.1 - 2022-27-09

Full Changelog: v0.18.0...v0.18.1

  • ⬆️ UPGRADE: docutils 0.19 support (#611)
  • ✨ NEW: Add attrs_image (experimental) extension (#620)
    • e.g. ![image](image.png){#id .class width=100px}
    • See: Optional syntax section
    • Important: This is an experimental extension, and may change in future releases

0.18.0 - 2022-06-07

Full Changelog: v0.17.2...v0.18.0

This release adds support for Sphinx v5 (dropping v3), restructures the code base into modules, and also restructures the documentation, to make it easier for developers/users to follow.

It also introduces document-level configuration via the Markdown top-matter, under the myst key. See the Local configuration section for more information.

Breaking changes

This should not be breaking, for general users of the sphinx extension (with sphinx>3), but will be for anyone directly using the Python API, mainly just requiring changes in import module paths.

The to_docutils, to_html, to_tokens (from myst_parser/main.py) and mock_sphinx_env/parse (from myst_parser.sphinx_renderer.py) functions have been removed, since these were primarily for internal testing. Instead, for single page builds, users should use the docutils parser API/CLI (see ), and for testing, functionality has been moved to https://github.com/chrisjsewell/sphinx-pytest.

The top-level html_meta and substitutions top-matter keys have also been deprecated (i.e. they will still work but will emit a warning), as they now form part of the myst config, e.g.

---
html_meta:
  "description lang=en": "metadata description"
substitutions:
  key1: I'm a **substitution**
---

is replaced by:

---
myst:
  html_meta:
    "description lang=en": "metadata description"
  substitutions:
    key1: I'm a **substitution**
---

Key PRs

  • ♻️📚 Restructure code base and documentation (#566)
  • ⬆️ Drop Sphinx 3 and add Sphinx 5 support (#579)
  • 🐛 FIX: parse_directive_text when body followed by options (#580)
  • 🐛 FIX: floor table column widths to integers (#568), thanks to @Jean-Abou-Samra!

0.17.2 - 2022-04-17

Full Changelog: v0.17.1...v0.17.2

  • ♻️ REFACTOR: Replace attrs by dataclasses for configuration (#557)

0.17.1 - 2022-04-15

Full Changelog: v0.17.0...v0.17.1

  • 🐛 FIX: Heading anchor resolution for parallel builds (#525)
  • 🔧 MAINTAIN: Move packaging from setuptools to flit (#553)
  • 🔧 MAINTAIN: Directly specify attrs dependency (#555)

0.17.0 - 2022-02-11

This release contains a number of breaking improvements.

Full Changelog: v0.16.1...v0.17.0

‼️ Markdown link resolution improvements

WARNING: This is a breaking change for links that rely on auto-generated anchor links. You should now manually enable auto-generated anchor links if you see errors like WARNING reference target not found.

Markdown links are of the format [text](link). MyST-Parser looks to smartly resolve such links, by identifying if they are:

  1. A link to an external resource, e.g. [text](http://example.com)
  2. A link to another source document, e.g. [text](file.md)
    • If header-anchors are enabled, anchor links are also supported, e.g. [text](file.md#anchor)
  3. A link to an internal sphinx cross-reference, e.g. [text](my-reference)

an additional situation is now supported:

  1. A link to a source file, which is not a document, e.g. [text](file.js). This behaves similarly to the sphinx download role.

In addition, configuration to more finely tune this behaviour has been added.

  • myst_all_links_external=True, will make all links be treated as (1)
  • myst_url_schemes=("http", "https"), sets what URL schemes are treated as (1)
  • myst_ref_domains=("std", "py"), sets what Sphinx reference domains are checked, when handling (3)

See Markdown Links and Referencing for more information.

‼️ Dollarmath is now disabled by default

WARNING: This is a breaking change for dollar math. You should now manually enable dollar math (see below).

The default configuration is now myst_enable_extensions=(), instead of myst_enable_extensions=("dollarmath",). If you are using math enclosed in $ or $$ in your documents, you should enable dollarmath explicitly.

See Dollar delimited math for more information.

⬆️ Drop Python 3.6 support

MyST-Parser now supports, and is tested against, Python 3.7 to 3.10.

✨ Add the strikethrough extension and myst_gfm_only configuration

The strikethrough extension allows text within ~~ delimiters to have a strike-through (horizontal line) placed over it. For example, ~~strikethrough with *emphasis*~~ renders as: strikethrough with emphasis.

Important: This extension is currently only supported for HTML output.

See Strikethrough for more information.

The myst_gfm_only=True configuration sets up specific configuration, to enable compliance only with GitHub-flavored Markdown, including enabling the strikethrough, tasklist and linkify extensions, but disabling support for roles and directives.

✨ Add myst_title_to_header configuration

Setting myst_title_to_header=True, allows for a title key in the frontmatter to be used as the document title. for example:

---
title: My Title with *emphasis*
---

would be equivalent to:

# My Title with *emphasis*

See Front matter for more information.

👌 Internal improvements

👌 IMPROVE: Convert nested headings to rubrics. Headings within directives are not directly supported by sphinx, since they break the structure of the document. Previously myst-parser would emit a myst.nested_header warning, but still generate the heading, leading to unexpected outcomes. Now the warning is still emitted, but also the heading is rendered as a rubric non-structural heading (i.e. it will not show in the ToC).

Other internal improvements primarily focused in improving support for the for "docutils-only" use, introduced in v0.16:

  • ♻️ REFACTOR: default_parser -> create_md_parser in #474
  • 👌 IMPROVE: Add bullet attribute to bullet_list node in #465
  • 👌 IMPROVE: Use correct renderer for state.inline_text in #466
  • 👌 IMPROVE: Docutils parser settings in #476
  • 🐛 FIX: front-matter rendering with docutils in #477
  • 👌 IMPROVE: Code block highlighting in #478
  • 👌 IMPROVE: note_refname for docutils internal links in #481
  • 🐛 FIX: Ordered list starting number in #483
  • 👌 IMPROVE: Propagate enumerated list suffix in #484
  • 👌 IMPROVE: DocutilsRenderer.create_highlighted_code_block in #488
  • 🐛 FIX: Source line reporting for nested parsing in #490
  • 🔧 MAINTAIN: Implement MockInliner.parse in #504

0.16.1 - 2021-12-16

✨ NEW: Add myst_linkify_fuzzy_links option. When using the linkify extension, this option can be used to disable matching of links that do not contain a schema (such as http://).

0.16.0 - 2021-12-06

This release contains a number of exciting improvements:

Upgrade of Markdown parser

markdown-it-py has been upgraded to v2.0.0. This upgrade brings full compliance with the CommonMark v0.30 specification.

Additionally, mdit-py-plugins has been upgraded to v0.3.0. This improves the parsing of the MyST target syntax, to allow for spaces and additional special characters in the target name, for example this is now valid:

(a bc   |@<>*./_-+:)=

# Header

Also MyST role syntax now supports unlimited length in the role name and new lines in the content. For example, this is now valid:

{abc}`xy
new line`

Improvements for Docutils-only use

MyST now allows for Docutils-only use (outside of Sphinx), that allows for MyST configuration options to be set via the docutils.conf file, or on the command line.

On installing MyST-Parser, the following CLI-commands are made available:

  • myst-docutils-html: converts MyST to HTML
  • myst-docutils-html5: converts MyST to HTML5
  • myst-docutils-latex: converts MyST to LaTeX
  • myst-docutils-xml: converts MyST to docutils-native XML
  • myst-docutils-pseudoxml: converts MyST to pseudo-XML (to visualise the AST structure)

You can also install the myst-docutils package from pip, which includes no direct install requirements on docutils or sphinx.

See MyST with Docutils for more information.

Thanks to help from @cpitclaudel!

Include MyST files in RST files

With docutils>=0.17, the include directive has a parser option. This can be used with myst-parser to include MyST files in RST files.

Parse using the docutils only parser:

.. include:: include.md
   :parser: myst_parser.docutils_

Parse using the sphinx parser:

.. include:: include.md
   :parser: myst_parser.sphinx_

Addition of the fieldlist syntax extension

Field lists are mappings from field names to field bodies, based on the reStructureText syntax:

:name only:
:name: body
:name:
  Multiple

  Paragraphs

This should eventually allow for MyST Markdown docstrings! (see https://github.com/executablebooks/MyST-Parser/issues/228)

See Field Lists syntax for more information.

Improvements to table rendering

Tables with no body are now allowed, for example:

| abc | def |
| --- | --- |

Also cell alignment HTML classes have now been changed to: text-left, text-center, or text-right, for example:

| left | center | right |
| :--- | :----: | ----: |
| a    | b      | c     |

is converted to:

<table class="colwidths-auto">
  <thead>
  <tr>
    <th class="text-left head"><p>left</p></th>
    <th class="text-center head"><p>center</p></th>
    <th class="text-right head"><p>right</p></th>
  </tr>
  </thead>
  <tbody>
  <tr>
    <td class="text-left"><p>a</p></td>
    <td class="text-center"><p>b</p></td>
    <td class="text-right"><p>c</p></td>
  </tr>
  </tbody>
</table>

These classes should be supported by most sphinx HTML themes.

See Tables syntax for more information.

Pull Requests

  • 🐛 FIX: Add mandatory attributes on enumerated_list by @cpitclaudel in #418
  • 📚 DOCS: Add reference to MySTyc in landing page by @astrojuanlu in #413
  • ⬆️ UPGRADE: markdown-it-py v2, mdit-py-plugins v0.3 by @chrisjsewell in #449
  • 👌 IMPROVE: Table rendering by @chrisjsewell in #450
  • 🐛 FIX: Ensure parent files are re-built if include file changes by @chrisjsewell in #451
  • 🐛 FIX: Convert empty directive option to None by @chrisjsewell in #452
  • 👌 IMPROVE: Add \\ for hard-breaks in latex by @chrisjsewell in #453
  • 🔧 MAINTAIN: Remove empty "sphinx" extra by @hukkin in #350
  • ✨ NEW: Add fieldlist extension by @chrisjsewell in #455
  • ✨ NEW: Add Docutils MyST config and CLI by @cpitclaudel in #426
  • 🔧 MAINTAIN: Add publishing job for myst-docutils by @chrisjsewell in #456
  • 🧪 TESTS: Add for gettext_additional_targets by @jpmckinney in #459

New Contributors

  • @cpitclaudel made their first contribution in #418
  • @astrojuanlu made their first contribution in #413

Full Changelog: https://github.com/executablebooks/MyST-Parser/compare/v0.15.2...v0.16.0

0.15.2 - 2021-08-26

This is mainly a maintenance release that fixes some incompatibilities with sphinx<3.1, improvements for compatibility with docutils=0.17, and improvements to robustness.

0.15.1 - 2021-06-18

👌 IMPROVE: MathJax compatibility with nbsphinx

nbsphinx also overrides the MathJax configuration. For compatibility, output_area is added to the list of default processed classes, and the override warning is allowed to be suppressed with suppress_warnings = ["myst.mathjax"].

0.15.0 - 2021-06-13

Upgraded to sphinx v4 ⬆️

A principe change in this release is to updates the requirements of myst-parser from sphinx>=2,<4 to sphinx>=3,<5.

Changed MathJax handling ♻️

Instead of removing all $ processing for the whole project, during MyST document parsing, the top-level section is now given the classes tex2jax_ignore and mathjax_ignore (turning off default MathJax processing of all HTML elements) and MathJax is then configured to process elements with the tex2jax_process|mathjax_process|math classes.

See the math syntax guide for further information.

Set URL scheme defaults ‼️

The myst_url_schemes default is now: ("http", "https", "mailto", "ftp"). This means that only these URL will be considered as external (e.g. [](https://example.com)), and references like [](prefix:main) will be considered as internal references. Set myst_url_schemes = None, to revert to the previous default.

Added myst_heading_slug_func option 👌

Use this option to specify a custom function to auto-generate heading anchors (see Auto-generated header anchors).

Thanks to @jpmckinney!

0.14.0 - 2021-05-04

Upgrade to markdown-it-py v1.0 ⬆️

This release updates the code-base to fully support the markdown-it-py v1.0.0 release. In particular for users, this update alters the parsing of tables to be consistent with the Github Flavoured Markdown (GFM) specification.

New Features ✨

  • Task lists utilise the markdown-it-py tasklists plugin, and are applied to Markdown list items starting with [ ] or [x].

    - [ ] An item that needs doing
- [x] An item that is complete

    Add "tasklist" to the myst_enable_extensions configuration to enable.

    See the optional syntax guide for further information.

  • The sub-ref role has been added for use identical to ReST's |name| syntax.

    This allows one to access Sphinx's built-in |today|, |release| and |version| substitutions, and also introduces two new substitutions: wordcount-words and wordcount-minutes, computed by the markdown-it-py wordcount_plugin.

    > {sub-ref}`today` | {sub-ref}`wordcount-words` words | {sub-ref}`wordcount-minutes` min read

    See the roles syntax guide for further information.

  • The dmath_double_inline configuration option allows display math (i.e. $$) within an inline context. See the math syntax guide for further information.

Remove v0.13 deprecations ‼️

The deprecations made to extension configurations and colon fences in 0.13.0 (see below) have now been removed:

  • Configuration variables: myst_admonition_enable, myst_figure_enable, myst_dmath_enable, myst_amsmath_enable, myst_deflist_enable, myst_html_img_enable
  • :::{admonition,class} -> :::{admonition}\n:class: class
  • :::{figure} -> :::{figure-md}

Fix extraction of nested footnotes 🐛

Previously footnote definitions in block elements like lists would crash the parsing:

- [^e]: footnote definition in a block element

These are now correctly extracted.

0.13.7 - 2021-04-25

👌 IMPROVE: Add warning for nested headers:

Nested headers are not supported within most elements (this is a limitation of the docutils/sphinx document structure), and can lead to unexpected outcomes. For example in admonitions:

```{note}
# Unsupported Header
```

A warning (of type myst.nested_header) is now emitted when this occurs.

🔧 MAINTAIN: Python 3.9 is now officially supported.

0.13.6 - 2021-04-10

🐛 FIX: docutils v0.17 compatibility

0.13.5 - 2021-02-15

  • ⬆️ UPGRADE: required markdown-it-py to v0.6.2: In particular, this fixes missing source line mappings for table rows and their children
  • 👌 IMPROVE: Store rawtext in AST nodes: We now ensure that the raw text is propagated from the Markdown tokens to the Sphinx AST. In particular, this is required by the gettext builder, to generate translation POT templates. Thanks to @jpmckinney!
  • ✨ NEW: Add warning types myst.subtype: All parsing warnings are assigned a type/subtype, and also the messages are appended with them. These warning types can be suppressed with the sphinx suppress_warnings config option. See How-to suppress warnings for more information.

0.13.3 - 2021-01-20

Minor fixes:

  • 🐛 FIX: front-matter parsing for bibliographic keys
  • 🐛 FIX: directive/role name translations
  • 👌 IMPROVE: Add warning for multiple footnote definitions

0.13.2 - 2021-01-20

✨ NEW: Add html_admonition extension

By adding "html_admonition" to myst_enable_extensions, you can enable parsing of <div class="admonition"> HTML blocks to sphinx admonitions.

This is helpful when you care about viewing the "source" Markdown, such as in Jupyter Notebooks.
For example: 
<div class="admonition note" name="html-admonition">
<p class="title">This is the **title**</p>
This is the *content*
</div>
See the optional syntax guide for further information.
👌 IMPROVE: Footnotes

If the label is an integer, then it will always use this integer for the rendered label (i.e. they are manually numbered).

Add myst_footnote_transition configuration, to turn on/off transition line.
Add footnotes class to transition <hr> in HTML.
See the syntax guide for further information.
👌 IMPROVE: substitution extension logic

Parse inline substitutions without block rules, unless the substitution starts with a directive.

🐛 FIX: Render front-matter as field_list

To improve use by sphinx extensions).

👌 IMPROVE: Code quality

Add isort and mypy type checking to code base.

(thanks to contributors @akhmerov, @tfiers)

0.13.1 - 2020-12-31

👌 Directives can now be used for inline substitutions, e.g.

---
substitutions:
  key: |
    ```{image} img/fun-fish.png
    :alt: fishy
    :height: 20px
    ```
---

An inline image: {{ key }}

0.13.0 - 2020-12-18

This release makes some major updates to the optional syntaxes. For full details see Optional MyST Syntaxes.

🗑 Deprecations

myst_enable_extensions = ["dollarmath", ...] now replaces and deprecates individual enable configuration variables: admonition_enable -> "colon_fence", figure_enable -> "colon_fence", dmath_enable -> "dollarmath", amsmath -> "colon_fence", deflist_enable -> "deflist", html_img_enable -> "html_image".

The colon_fence extension (replacing admonition_enable) now works exactly the same as normal ``` code fences, but using ::: delimiters. This is helpful for directives that contain Markdown text, for example:

:::{admonition} The title
:class: note

This note contains *Markdown*
:::

✨ New

The smartquotes extension will automatically convert standard quotations to their opening/closing variants:

  • 'single quotes': ‘single quotes’
  • "double quotes": “double quotes”

The linkify extension will automatically identify “bare” web URLs, like www.example.com, and add hyperlinks; www.example.com. This extension requires that linkify-it-py is installed.

The replacements extension will automatically convert some common typographic texts, such as +- -> ±.

The substitution extension allows you to specify "substitution definitions" in either the conf.py (as myst_substitutions) and/or individual file's front-matter (front-matter takes precedence), which will then replace substitution references. For example:

---
substitutions:
  key1: definition
---
{{ key1 }}

The substitutions are assessed as jinja2 expressions and includes the Sphinx Environment as env, so you can do powerful thinks like:

{{ [key1, env.docname] | join('/') }}

The figure-md directive has been added (replacing enable_figure), which parses a "Markdown friendly" figure (used with the colon_fence extension):

:::{figure-md} fig-target
:class: myclass

<img src="img/fun-fish.png" alt="fishy" class="bg-primary mb-1" width="200px">

This is a caption in **Markdown**
:::

👌 Improvements

Using the html_image extension, HTML images are now processed for both blocks and (now) inline.

So you can correctly do, for example:

I’m an inline image: <img src="img/fun-fish.png" height="20px">

| table column                              |
| ----------------------------------------- |
| <img src="img/fun-fish.png" width="20px"> |

0.12.10 - 2020-09-21

🐛 FIX: allow dates to be parsed in frontmatter.
This fixes a bug that would raise errors at parse time if non-string date objects were in front-matter YAML. See #253

0.12.9 - 2020-09-08

✨ NEW: Auto-generate heading anchors.
This utilises markdown-it-py's anchors-plugin, to generate unique anchor "slugs" for each header (up to a certain level), and allows them to be referenced via a relative path, e.g. [](./file.md#header-anchor), or in the same document, e.g. [](#header-anchor).

Slugs are generated in the GitHub style (see here); lower-case text, removing punctuation, replacing spaces with -, enforce uniqueness via suffix enumeration -1.

It is enabled in your conf.py via myst_heading_anchors = 2 (sets maximum heading level).

See the documentation here.

🐛 FIX: doc reference resolution for singlehtml/latex.
These reference resolutions are passed to the "missing-reference" event, and require the node["refdoc"] attribute to be available, which was missing for [text](./path/to/file.md) type references.

0.12.7 - 2020-08-31

✨ NEW: Want to include your README.md in the documentation?
See including a file from outside the docs folder.

(👌 added relative-docs option in 0.12.8)

0.12.5 - 2020-08-28

✨ NEW: Add Markdown figure syntax
Setting myst_figure_enable = True in your sphinx conf.py, combines the above two extended syntaxes, to create a fully Markdown compliant version of the figure directive. See Markdown Figures for details.

(👌 formatting of caption improved in 0.12.6)

0.12.4 - 2020-08-27

👌 IMPROVE: the mathjax extension is now only overridden if strictly necessary (to support dollar and ams math), and the override is more precise, to mitigate any unwanted side-effects

0.12.3 - 2020-08-26

✨ NEW: Add definition lists.
This addition, enabled by myst_deflist_enable = True, allows for "Pandoc style" definition lists to be parsed and rendered, e.g.
Term 1
: Definition

See the Definition Lists documentation for further details.

👌 IMPROVE: mathjax_config override.
Only mathjax_config["tex2jax"] will now be overridden, in order to not interfere with other user configurations, such as adding TeX macros. The configuration name has also changed from myst_override_mathjax to myst_update_mathjax. See Mathjax and math parsing for further details.

0.12.2 - 2020-08-25

✨ NEW: Add the eval-rst directive

This directive parses its contents as ReStructuredText, which integrates back into the rest of the document, e.g. for cross-referencing. See this documentation for further explanation.

In particular, this addition solves some outstanding user requests:

Thanks to @stephenroller for the contribution 🎉

0.12.1 - 2020-08-19

✨ NEW: Add myst_commonmark_only config option, for restricting the parser to strict CommonMark (no extensions).

0.12.0 - 2020-08-19

‼️ BREAKING

If you are using math in your documents, be sure to read the updated Math syntax guide! In particular, the Mathjax configuration is now overridden, such that LaTeX environments will only be rendered if myst_amsmath_enable=True is set.

The myst_math_delimiters option has also been removed (please open an issue if you would like brackets math parsing to be re-implemented).

In addition the myst_html_img option name has been changed to myst_html_img_enable.

Some underlying code has also been refactored, to centralise handling of configuration options (see commit 98573b9).

Improved 👌

More configuration options for math parsing (see MyST configuration options).

0.11.2 - 2020-07-13

Added ✨

Improved 👌

  • [title](link) syntax now works with intersphinx references. Recognised URI schemas can also be configured, see the configuration options

0.11.1 - 2020-07-12

Fix

  • Correctly pin required minimum markdown-it-py version

0.11.0 - 2020-07-12

Added ✨

Breaking ‼️

  • Sphinx configuration options are now set as separate variables, rather than a single dict. See MyST configuration options for details.

0.10.0 - 2020-07-08

(full changelog)

Improved 👌

Contributors to this release

(GitHub contributors page for this release)

@AakashGfude | @asmeurer | @choldgraf | @chrisjsewell | @codecov | @webknjaz | @welcome

Past Releases

Contributors

(GitHub contributors page for these releases)

@akhmerov | @asmeurer | @certik | @choldgraf | @chrisjsewell | @codecov | @dhermes | @filippo82 | @jlperla | @jstac | @martinagvilas | @mlncn | @mmcky | @moorepants | @najuzilu | @nathancarter | @pauleveritt | @phaustin | @rossbar | @rowanc1 | @sbliven | @webknjaz