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* Re: Different behaviour between M-x replace-regexp in function and in echo window
       [not found] <mailman.2365.1114076857.2895.help-gnu-emacs@gnu.org>
@ 2005-04-21  9:54 ` David Kastrup
  2005-04-21 13:21 ` Different behaviour between M-x replace-regexp in function and in echowindow Peter Tury
  1 sibling, 0 replies; 2+ messages in thread
From: David Kastrup @ 2005-04-21  9:54 UTC (permalink / raw)


luca.spinacci@seleniacomms.com writes:

> If I use M-x replace-regexp followed by
> "\(//\)[[:space:]] *" <RET> "\1 " <RET>
> the behaviour is correct - replacing any space
> between '//' ed comment text
> Ex.
> //___Text... => //_Text...
> where '_' is a space
>
> If I use the same
> replace-regexp "\(//\)[[:space:]] *" "\1 "
> in a function no replacing is done - Replaced 0 occurences -
>
> (defun comment-formatting(start end)
>  (interactive "*r")
>   (save-excursion
>     (save-restriction
>       (narrow-to-region start end)
>       (goto-char start)
>       (replace-regexp "\(//\)[[:space:]] *" "\1 "))))
>
> So M-x comment-formatting has differnt behaviour. Why?

It hasn't.  Just use
C-x ESC ESC
after the manual replacement to get a peek at what this did.  You'll
notice that the backslashes in string syntax have to be doubled.

-- 
David Kastrup, Kriemhildstr. 15, 44793 Bochum

^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: Different behaviour between M-x replace-regexp in function and in echowindow
       [not found] <mailman.2365.1114076857.2895.help-gnu-emacs@gnu.org>
  2005-04-21  9:54 ` Different behaviour between M-x replace-regexp in function and in echo window David Kastrup
@ 2005-04-21 13:21 ` Peter Tury
  1 sibling, 0 replies; 2+ messages in thread
From: Peter Tury @ 2005-04-21 13:21 UTC (permalink / raw)


Hi,

consider this alternative:

(defun comment-formatting(start end)
  (interactive "*r")
   (save-excursion
     (goto-char start)
     (while (search-forward "//" end t)
       (just-one-space))))

It inserts a SPC if needed. Hm?

Br,
P

^ permalink raw reply	[flat|nested] 2+ messages in thread

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2005-04-21  9:54 ` Different behaviour between M-x replace-regexp in function and in echo window David Kastrup
2005-04-21 13:21 ` Different behaviour between M-x replace-regexp in function and in echowindow Peter Tury

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