spacemod is a text search-and-replace tool optimized towards refactoring code.

It is very similar to fastmod, but with some additional features:

• Undo stack. Approved a diff too soon? Hit [u]ndo to revert.
• Yes to all diffs like this. Auto-approve future diffs with the exact same content.
• Parenthesis-matching (experimental). Besides regex, spacemod also supports a custom regex-like language that requires less escaping and whitespace-handling.
• Parallelism. spacemod is not quite as CPU-efficient as fastmod, but compensates by using background threads to search files while you approve diffs.