Re: [AUCTeX-devel] (old) TeX definitions and query-replace-regexp

[Uwe Brauer]

   > On Sat, Aug 09, 2014 at 09:15:41PM +0200, Uwe Brauer wrote:

   > You have not selected the two subexpressions you want to replace 
correctlty.

   > re-builder gives the following for the first match:
   > "\\(?:\\\\nv{\\([[:alnum:]]*\\^[[:alnum:]]*\\)}{\\([[:alnum:]]*\\)}\\)"

   > But, of course, you could replace each [[:alnum:]] with [a-z,A-Z,0-9] if 
you like.
   > Note the \\( ... \\) around [[:alnum:]]*\\^[[:alnum:]]* and [[:alnum:]]*. 
These
   > select the subexpressions and label then \1 ans \2.  Note also the ?: that 
stops
   > the \\( at the beginning selecting a sub expression.
Cool thanks,


(query-replace-regexp
"\\(?:\\\\nv{\\([[:alnum:]]*\\^[[:alnum:]]*\\)}{\\([[:alnum:]]*\\)}\\)"
"\\\\|\\1\\\\|_{H^{\\2}}")

Did what I wanted!


   > Incidentally if you use regular expression a lot in emacs it is worth 
getting 
   > the package rx and re-builder.

I used 

(regexp-opt '("\\nv{[a-z]*\\^[a-z]}{s}") t)
which was not helpful.

How do you use re-builder

(re-builder '("\\nv{[a-z]*\\^[a-z]}{s}") t)?

Oops, I see that it should be called interactively and it seem not to
work properly in Xemacs.

   > I hope this helps.

Once I understand how to use re-builder, I try to get it to work
for xemacs. If not I must use Mose's solution.

Thanks

Uwe

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