Question

Given …

Ax~B~xCx~xDx

… emit …

A~-B-~C~-~D~

I want to replace the ~ characters with – and the x characters with ~.

I could write …

s/~/-/g;s/x/~/g; 

… but that (looks like it) passes over the string twice.

Answer 1

Use “transliterate” for replacement based on characters. Try this:

tr/~x/\-~/;