Claude Code's Bash grep returns fewer results in allowlist-style .gitignore repositories when the repository root is passed as an absolute path—Measuring ugrep behavior …

The grep command in Claude Code's Bash tool, when used in a repository with an allowlist-style .gitignore, fails to include ...

mv in Ubuntu 26.10 does not preserve mtime when moving across devices—a comparison with GNU

Knowing that cp, mv, and rm in Ubuntu 26.10 have been replaced by the Rust-based uutils coreutils 0.12.0, I compared them ...