Re: [h-e-w] RegExp in

[Tom Capey]

* Slava <address@hidden> writes:

> Hi, All,
> I need your help!

> Next code doesn't search anything. Why?

> (defun my-function ()
>       "Replace  '%' with '\%' (it should skip percent signs already
>       with the slash"
>       (interactive)
>       (while (re-search-forward "\([^\\]\)%" nil t)   
>               (replace-match "\1%" nil nil)))

> It works without '\(...\)', but then I loose one symbol before each percent
> sign being replaced. 


  double up the slashes to add them before the percentage sign
  (and double them up in the search expression).


(defun my-function ()
  "Replace  '%' with '\%' (it should skip percent signs already with the slash"
  (interactive)
  (while (re-search-forward "\\([^\\]\\)%" nil t)
    (replace-match "\\1\\\\%")))

     


/Tom
-- 
I for one welcome our new key-chord-requiring self-documenting
extensible OS-in-an-editor Emacs overlord. -- Jock Cooper



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