microsoft / microsoft/vscode-textmate

Format strings not being handled in grammar

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feature-request
Dominant language
TypeScript
Stars
678
Forks
135
Avg merge
1d 14h
Merged PRs (30d)
2

Description

Given the grammar:

https://github.com/textmate/markdown.tmbundle/blob/master/Syntaxes/Markdown.tmLanguage it seems that vscode can't properly handle the construct https://github.com/textmate/markdown.tmbundle/blob/master/Syntaxes/Markdown.tmLanguage#L105

i.e.: when parsing a markdown with '##' with this construct (markup.heading.${1/(#)(#)?(#)?(#)?(#)?(#)?/${6:?6:${5:?5:${4:?4:${3:?3:${2:?2:1}}}}}/}.markdown), it'd be expected that the result is markup.heading.2.markdown, whereas vscode is just giving markup.heading.${1/(#)(#)?(#)?(#)?(#)?(#)?/${6:?6:${5:?5:${4:?4:${3:?3:${2:?2:1}}}}}/}.markdown as the result.

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the referenced Markdown.tmLanguage construct around line 105 and reproduce the heading case described in the issue. Trace how the library handles the grammar's format-string substitution, and consider the work complete when the construct resolves to markup.heading.2.markdown instead of retaining the interpolation expression.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript
Domain
tooling
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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