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From: pjb@informatimago.com (Pascal J. Bourguignon)
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Subject: Re: replace-regexp in lisp function
Date: Mon, 18 Jan 2010 14:11:17 +0100
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Sven Garbade <sfgarbade@googlemail.com> writes:

> Hallo List,
>
> I frequently use the following regular-regexp:
>
> M-x replace-regexp <RET> \(<<\) <RET> \1cn\,(+ (line-number-at-pos) \#)
>
> to replace "<<" with "<<cn=line number". I tried to write a function
>
> ;; add chunk number
> (defun add-chunk-number ()
>   (interactive)
>   (query-replace-regexp "\(<<\)" "\1cn\,(+ (line-number-at-pos) \#)")
>   )
>
> to save typing, but this does not work. What did I wrong?

You don't understand the syntax of strings.

How many characters are there in "\(" ?
How many characters are there in "\n" ?
How many characters are there in "\\(" ?
How many characters are there in "\\n" ?


-- 
__Pascal Bourguignon__                     http://www.informatimago.com/