microsoft / microsoft/TypeScript-TmLanguage
Backtick in a regex literal confuses the syntax highlighting
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- Dominant language
- TypeScript
- Stars
- 471
- Forks
- 149
- PR merge metrics
- No merged PRs in 30d
Description
JavaScript and TypeScript Nightly version: 5.9.0-dev.20250702
Code
function foo(value: string): void {
const regex = /sql`/gu;
const matches = value.matchAll(regex);
const template = `sql\n${value}`;
}
With backtick:
Without backtick:
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the provided TypeScript snippet in the repository's TextMate grammar used for syntax highlighting, comparing the behavior with and without the backtick in the regex literal. Trace the grammar rules that classify the regex and following template literal; done means the backtick no longer confuses highlighting while both constructs remain correctly highlighted.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- typescript
- Domain
- tooling
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100