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In my specific example, for a selection of lines I want to duplicate them inline, separated by an arbitrary marker

Ie,

stringA
stringB

becomes

stringA_something_stringA
stringB_something_stringB

Altough I'm mediocre with regex, I believe this should be accomplished by searching for something like:

(string.)_something_(string.)

and replacing with

\1_something_\1

However I'm unable to get even simple \1 replacements working. Am I doing something wrong?

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2 Answers

up vote 1 down vote accepted

Your replacement regex is correct, however your match will not work as there is only 1 world per line. You are trying to match the replacement text which is not yet there :)

try this:

(string.)

replace with \1_something_\1.

Make sure you are using regex mode as well.

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Ty JohnT (and Sonny) for the answer. JohnT. I still don't follow why the search string doesn't work though. Even consdiering just one line (one world) I would have thought that "(string.)_something_(string.)" matches "stringA_something_stringA". – RJFalconer Jan 28 '11 at 18:08
@RJF I thought you were replacing StringA and StringB with stringA_something_stringA and stringB_something_stringB ? In that case you cannot search for text that is not already there. – John T Jan 28 '11 at 18:11
Oh, yeah. Confusing myself there. Tyvm. – RJFalconer Jan 29 '11 at 9:06
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up vote 1 down vote

Find what: (string.)
Replace with: \1_something_\1

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