unairy delimited at point (snippet)

unairy delimited at point (snippet)

[Andreas Röhler]

just for fun...
comments welcome.


Andreas

--
https://code.launchpad.net/~a-roehler/python-mode
https://code.launchpad.net/s-x-emacs-werkstatt/

;;;;;;;;;;;;;;;;;;;;;;;;

(defun unairy-delimited-atpt (char arg)
   "Takes any char inserted at prompt as delimiter.
Returns the string if any. With ARG 2 the bounds of this string are 
returned as a list, with ARG 3 it's lenght, a number.

If looking for parentized, braced at point etc., its delivered with 
thing-at-point-utils.el at
https://code.launchpad.net/s-x-emacs-werkstatt  "
   (interactive "cinsert: \np")
   (let*
       ((orig (point))
        (char (char-to-string char))
        (beg (search-backward char nil t 1))
        (end (progn
               (when (looking-at char)
                 (push-mark)
                 (goto-char (match-end 0)))
               (search-forward char nil t 1)))
        (erg
         (when (ignore-errors (and (< beg end)(<= beg orig)(<= orig end)))
           (cond ((eq 1 arg)
                  (buffer-substring-no-properties beg end))
                 ((eq 2 arg)
                  (list beg end))
                 ((eq 3 arg)
                  (- end beg))))))
     (exchange-point-and-mark)
     (when (interactive-p) (message "%s" erg))
     erg))

Re: unairy delimited at point (snippet)

[Thien-Thi Nguyen]

() Andreas Röhler <andreas.roehler@online.de>
() Tue, 10 Aug 2010 08:11:03 +0200

   comments welcome.


          (char (char-to-string char))
          (beg (search-backward char nil t 1))

                 (search-forward char nil t 1)))

See also ‘skip-chars-forward’ and ‘skip-chars-backward’.

Re: unairy delimited at point (snippet)

[Andreas Röhler]

Am 10.08.2010 10:53, schrieb Thien-Thi Nguyen:
> () Andreas Röhler<andreas.roehler@online.de>
> () Tue, 10 Aug 2010 08:11:03 +0200
>
>     comments welcome.
>
>
>            (char (char-to-string char))
>            (beg (search-backward char nil t 1))
>
>                   (search-forward char nil t 1)))
>
> See also ‘skip-chars-forward’ and ‘skip-chars-backward’.
>
>

Thanks a lot.

Thats much faster, isn't it?

Andreas