sad

sad is a batch file editor that brings sed-like power with interactive preview and safety. Instead of applying changes blindly, sad displays a unified diff of all proposed modifications before committing, letting you review or selectively approve individual changes.

Features include

• Integration with fzf for multi-select file filtering
• Support for regex patterns with various flags (case-insensitive, multiline, dot-all)
• Compatibility with diff colorizers like delta and diff-so-fancy.

The string literal mode allows exact string matching without regex interpretation, and customizable diff context helps focus on relevant changes.

sad works particularly well in pipelines and shell scripts where you need confidence that batch edits are correct before applying them.