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In regex plugin of gedit, I use a regex to match/search and another for substitution. In the matching regex, I only have one group. In the substitution regex, I use \1 to refer to the group, and I also like to add a zero right behind \1, but \10 will change to mean the 10th group in matching regex. So I was wondering how to solve this problem?

For example, in my original text there are cases where 0 is misinput as o, such as 12o should be 120. My matching regex is (\d+)o, and my substitution regex is \10 which is not right.

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It depends on the regexp engine. Which plugin are you using (there are several around)? – Gilles Jul 15 '11 at 18:02
It is Python-style regex, written by Daniel d'Andrada T. de Carvalho <daniel.carvalho@indt.org.br>, Ben Fisher halfhourhacks.blogspot.com – Tim Jul 15 '11 at 18:14
\1[0] should do it in pretty much every implementation. (So that's a character class consisting of a single character, without quantifiers like ? or *.) – janmoesen Nov 6 '11 at 20:16
up vote 2 down vote accepted

Assuming that plugin uses the same syntax as the Python regexp engine: use \g<1>0 as the replacement text.

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thanks a lot for that one! – user871784 Sep 3 '13 at 10:40

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