comby

Tool for structural code search and replace that supports many languages. More information: https://github.com/comby-tools/comby.

• Match and rewrite templates, and print changes:

comby 'assert_eq!(:[a], :[b])' 'assert_eq!(:[b], :[a])' .rs

• Match and rewrite with rewrite properties:

comby 'assert_eq!(:[a], :[b])' 'assert_eq!(:[b].Capitalize, :[a])' .rs

• Match and rewrite in-place:

comby -in-place 'match_pattern' 'rewrite_pattern'

• Only perform matching and print matches:

comby -match-only 'match_pattern' ""