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[bug] .gitattributes linguist-language overrides are ignored for files in subdirectories

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评估

难度
2/5
预计耗时
1-3 小时
新手友好度
48/100
Issue 类型
缺陷
描述清晰度
描述清楚
活跃度
活跃
技术栈
typescript
领域
tooling

调研方向

Start in packages/web/src/lib/gitattributes.ts at resolveLanguageFromGitAttributes and review the existing unit test mentioned in the report. Run the test, then verify that filename-only patterns match files in subdirectories and slash-containing patterns are matched from the repository root, including leading-slash anchors.

由索引模型根据 Issue 内容生成。

描述

Describe the bug

linguist-language overrides in .gitattributes only apply to files at the repository root. resolveLanguageFromGitAttributes in packages/web/src/lib/gitattributes.ts passes the full repo-relative path to micromatch.isMatch(path, pattern). So *.h linguist-language=C does not match src/foo.h, and an anchored pattern like /config.in never matches at all.

Git's rule: a pattern without a slash matches the file name in any directory; a pattern with a slash is matched from the repo root (a leading / just anchors it).

To reproduce
  1. In an indexed repo, add *.h linguist-language=C to .gitattributes and have a header in a subdirectory, e.g. src/foo.h.
  2. Open src/foo.h in the file viewer. The override is ignored and the default language is used.

Or in code: resolveLanguageFromGitAttributes('src/foo.h', parseGitAttributes('*.h linguist-language=C')) returns undefined.

Sourcebot deployment information

Sourcebot version (e.g. v3.0.1): main @ b4931510 (found reading the source and confirmed with a unit test, not on a deployment)

Additional information

I have a small fix with tests ready and will open a PR that links this issue. (Found by an AI coding agent working for the breken-ai account.)

主要语言
TypeScript
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  3. Fork 仓库,在一个分支上完成修改。
  4. 提交 Pull Request,并在描述里引用这个 Issue 编号。

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