I am trying to add a colon after a specific sign (e.g -) only on certain occurrences. Here's an example convert:
-a 123 -b 456 -c 789 -d 333
to:
-a 123 -:b 456 -:c 789 -d 333

I tried s/\-[b,c]/-:/g but the -b and -c were replaced by -: I don't want to replace them, I want to add the colon to them.

Edit: chipmunk 2001-08-28

In reply to place holder by eyal

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