comby

Tool for structural code search and replace that supports many languages.

TLDR

Match and rewrite templates, and print changes

$ comby '[assert_eq!(:[a], :[b])]' '[assert_eq!(:[b], :[a])]' [.rs]
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Match and rewrite with rewrite properties

$ comby '[assert_eq!(:[a], :[b])]' '[assert_eq!(:[b].Capitalize, :[a])]' [.rs]
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Match and rewrite in-place

$ comby -in-place '[match_pattern]' '[rewrite_pattern]'
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Only perform matching and print matches

$ comby -match-only '[match_pattern]' ""
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