I sometimes need to do replacements which would involve using matched parts for the output.

For example, I would like to replace



::doWork(varName, 42)

whatever varName actually is.

Is there a straightforward way to do this?

1 Answer 1


It's doable. M-x query-replace-regexp:

  • from: ^\(\w+\)->\([^(]+\)()
  • to: ::\2(\1, 42)

But if it's a recurring pattern, it's best to solidify it in a function, instead of entering the regex each time.

  • 1
    Hmmm, isn't it ::\2(\1, 42)?
    – Nsukami _
    Jan 2, 2015 at 23:01
  • Oops, you're right.
    – abo-abo
    Jan 2, 2015 at 23:06

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