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}}' ""