Ignore inline notes during Markdown reference parsing#1713
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Inline notes inside reference labels can run during the reference-gathering pass. Reset note state for each parse and reject inline notes before note ordering starts so reused parser instances do not accept stale footnote data.
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Pull request overview
Resets @footnotes and @note_order to nil at the start of each parse call, and makes the InlineNote rule raise a ParseError when invoked before notes are initialized (e.g., during the references-gathering pass on a reused parser instance).
Changes:
- Reset
@footnotesand@note_orderto nil at the start ofparseto prevent leakage across reused parser instances. - Update the
InlineNotePEG rule action to raiseParseError, 'invalid inline note'when@note_orderis nil. - Add a regression test exercising an inline note inside a reference label after a prior parse.
Reviewed changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| lib/rdoc/markdown.kpeg | Source grammar: clear note state on parse and guard InlineNote action. |
| lib/rdoc/markdown.rb | Generated parser mirroring the kpeg changes (state reset + guard + Rules entry). |
| test/rdoc/rdoc_markdown_test.rb | New test validating the ParseError is raised on inline notes within reference labels after reuse. |
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tompng
reviewed
May 14, 2026
tompng
reviewed
May 14, 2026
Inline notes can be parsed while Markdown references are being collected, before footnote ordering has been initialized. Treat that early pass as a no-op so malformed reference labels do not crash the parser.
skatkov
changed the title
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Inline notes inside reference labels can be parsed during the reference-gathering pass, before footnote ordering is initialized.
RDoc::Markdown.parse("[foo ^[note]]: /url\n")This will crash a Markdown parser with a
NoMethodError.This change treats inline-note creation as a no-op until note ordering exists.