microsoft / microsoft/vscode-textmate

Doesn't support excluding scope selector in *.tmTheme files

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

Description

I have tried tokenizeLine2 method to highlight some codes, but find it cannot recognize any excluding scope selectors(like string - meta.template.expression) in *.tmTheme files. This kind of scope selector are useful in some cases, so could it be supported?

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by tracing how tokenizeLine2 parses and applies scope selectors from *.tmTheme grammars, focusing on selectors such as string - meta.template.expression. Compare the current selector behavior with the requested exclusion semantics. Done means excluding the specified scope produces the expected tokenization; the issue names no tests or files to run.

Written by the indexing model from the issue text.

Assessment

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

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