Replacing digits immediately after a saved pattern

Question

Searched pattern looks like text9

I search for (text)9

I want to replace with \\15 so that I would get text5

Answer 1

The replacement term \15 is being interpreted as "group 15" - you must escape the "5":

Try replacing with \1\\5, or if that doesn't work (I don't have textwrangler handy) use a look behind:

Search: (?<=text)9
Replace: 5

The look behind doesn't consume input, so only the "9" is matched.