[BUG] Glob tool doesn't respect .gitignore

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

• Grep (ripgrep) correctly ignores node_modules/ via .gitignore
• Glob returns 100+ files from node_modules/ when searching **/*.md

What Should Happen?

Glob should respect .gitignore patterns

Error Messages/Logs

Steps to Reproduce

1. Create a repo with node_modules/ in .gitignore
2. Have a node_modules/ directory with .md files (e.g., via npm install in a

subdirectory)

1. In Claude Code, ask: "find all markdown files" or similar

Expected: Only repo-owned .md files returned (respecting .gitignore)

Actual: Glob returns 100+ files from node_modules/

Comparison:
# Glob tool (doesn't respect .gitignore)
Glob(pattern: "**/*.md") → 100+ files including node_modules/

# Grep tool (respects .gitignore)
Grep(pattern: "README", glob: "*.md") → 1 file (only repo files)

Environment:

• Claude Code CLI
• macOS (Darwin 25.2.0)
• Repo structure: infra/node_modules/ with CDK dependencies

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.19

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_