claude-code-system-prompts/system-prompts/tool-description-grep.md

A powerful search tool built on ripgrep

Usage:

• ALWAYS use ${GREP_TOOL_NAME} for search tasks. NEVER invoke grep or rg as a ${BASH_TOOL_NAME} command. The ${GREP_TOOL_NAME} tool has been optimized for correct permissions and access.
• Supports full regex syntax (e.g., "log.*Error", "function\s+\w+")
• Filter files with glob parameter (e.g., ".js", "**/.tsx") or type parameter (e.g., "js", "py", "rust")
• Output modes: "content" shows matching lines, "files_with_matches" shows only file paths (default), "count" shows match counts
• Use ${TASK_TOOL_NAME} tool for open-ended searches requiring multiple rounds
• Pattern syntax: Uses ripgrep (not grep) - literal braces need escaping (use interface\{\} to find interface{} in Go code)
• Multiline matching: By default patterns match within single lines only. For cross-line patterns like struct \{[\s\S]*?field, use multiline: true