extended regexp

[damien.thiriet77]

Hello,


I have been recently doing a lot of regexp with grep, sed and emacs and I think 
differences between regexp syntax of those programs are a bit confusing (I am 
using GNU sed, GNU grep and GNU emacs). Extended regexp somehow unify these 
syntaxes, and I would link to know if there is a way to implement them in emacs 
regexp search and replace. I would like to do so for another reason: I have 
quite often to escape ( and { in my regexp, which is quite tedious. Of course, 
I suppose the default behaviour of ( in regexp is connected with lisp syntax, 
but I mostly use search-replace in texts with few (). I made a research in both 
emacs info manual and emacs wiki and couldn’t find anything on it. As far as I 
remember, vim has got such extended regexp-like functions.

If there is no extended-regexp functions nor mode avalaible, I may send a 
feature request for it (the idea would be to have a regexp variable for usual 
or extended search and replace). However, do you think someone else might be 
interested by such a behaviour? 


Damien Thiriet




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