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fix(utils): preserve trailing hash in heading title when not preceded by whitespace (AI-assisted) - #12760
fix(utils): preserve trailing hash in heading title when not preceded by whitespace (AI-assisted)#12760Roxen-AS wants to merge 2 commits into
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… by whitespace (AI-assisted) In CommonMark ATX headings, closing '#' characters must be preceded by whitespace to be treated as closing delimiters. Previously, any heading ending in '#' (such as '# Learn C#') had its trailing '#' stripped when determining contentTitle. Strip optional custom heading IDs first, then strip closing '#' only if preceded by whitespace. Signed-off-by: Roxen-AS <akash.arjun12@gmail.com>
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| Check name | Status | Explanation |
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| Description Check |  |
Check skipped - CodeRabbit’s high-level summary is enabled. |
| Title check | |
The title clearly describes the main change: preserving a trailing hash in heading titles when it is not preceded by whitespace. |
| Linked Issues check | |
Issue #12644 requires inferred titles to preserve a word-ending # and to remove ATX closing # only after a space or tab. parseMarkdownContentTitle now removes a trailing custom heading ID first,… |
| Out of Scope Changes check | |
The changes are limited to parseMarkdownContentTitle and focused unit tests in markdownUtils.test.ts. Both changes support issue #12644. No unrelated change is shown. |
| Docstring Coverage | |
Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 2 files. |
Full details: Linked Issues check
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Explanation
Issue
#12644requires inferred titles to preserve a word-ending#and to remove ATX closing#only after a space or tab.parseMarkdownContentTitlenow removes a trailing custom heading ID first, then applies[ \t]+#+$. The tests cover# Learn C#, closing hashes, a non-breaking-space case, and a custom heading ID. These changes satisfy the issue coding requirement.
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Inline comments:
Review comments at @packages/docusaurus-utils/src/markdownUtils.ts:
- Line 340: Update the closing-hash removal regex in the Markdown heading
normalization chain to match only spaces and tabs before trailing hashes,
preserving hashes preceded by non-breaking or other Unicode whitespace.
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packages/docusaurus-utils/src/__tests__/markdownUtils.test.tspackages/docusaurus-utils/src/markdownUtils.ts
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…spec Signed-off-by: Roxen-AS <akash.arjun12@gmail.com>
Motivation
Fixes #12644.
In CommonMark ATX headings (spec 4.2), closing
#characters must be preceded by at least one space or tab to be recognized as closing delimiters.Previously,
parseMarkdownContentTitlein@docusaurus/utilsstripped trailing#characters even when not preceded by whitespace:Because
#+had no whitespace requirement, headings such as# Learn C#or# Learn F#had their trailing#stripped, producing"Learn C"in document titles, sidebars, and pagination labels.Changes
packages/docusaurus-utils/src/markdownUtils.ts, strip optional custom heading IDs first, then strip closing#only if preceded by whitespace (\s+#+$).packages/docusaurus-utils/src/__tests__/markdownUtils.test.tsverifying:# Learn C#->"Learn C#").#while preserving word-ending hash (# Learn C# ###->"Learn C#").# Learn C# {#learn-c-sharp}->"Learn C#").Test Plan
packages/docusaurus-utils/src/__tests__/markdownUtils.test.ts.Summary by CodeRabbit
#attached directly to a word, even when followed by closing heading markers or a custom heading ID. Closing markers and custom IDs are still excluded from the parsed title. Titles also correctly retain a hash followed by a non-breaking space and another#.