microsoft / microsoft/vscode-textmate

Matching multiline text

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

Description

My language has syntax that is structured as follows:

<Group 1>
<Group 2>
<Group 2>

<Group 1>
<Group 2>
<Group 2>
<Group 2>

...

There are sets of one "Group 1" followed by any number of "Group 2" before a blank line, after which another set starts. I want Group 1 highlighted differently than Group 2. There are no identifying features within the line, just its place within the file. I tried using newlines in a regex to capture these but it didn't work, and it seems that VSCode only goes one line at a time for the regex.

I can't use a language server since this needs to work in VSCode web, how can I achieve this highlighting?

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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 examining how TextMate grammars and VSCode regex tokenization handle line boundaries, especially in the VSCode web environment. Determine whether multiline matching can support the described Group 1 and Group 2 structure; done would be a documented or implemented way to highlight the groups without a language server.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript, vscode
Domain
tooling
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
20/100

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