Re: Putting == before and after selected text

[Merciadri Luca <Luca.Merciadri@student.ulg.ac.be>]

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Andreas Politz <politza@fh-trier.de> writes:

> Merciadri Luca <Luca.Merciadri@student.ulg.ac.be> writes:
>
>> Hi,
>>
>> I would like some key to a command. This is not difficult, but this
>> command should, once it is executed on some text, put `==' before the
>> text (on the line before) and `==' after the text (on the line after).
>>
>> How could I do this?
>
> How about this ?
>
> (defun wrap-region-in-== (beg end)
>   "Wrap lines contained in region with \"==\" marker.
>
> Interactively, if region is not active, operate on prefix-arg
> lines around point."
>   (interactive
>    (if (use-region-p)
>        (list (region-beginning) (region-end))
>      (let ((arg (prefix-numeric-value current-prefix-arg)))
>        (save-excursion
>          (if (< arg 0)
>              (forward-line)
>            (beginning-of-line))
>          (sort (list (point) (progn (forward-line arg) (point)))
>                '<)))))
>   (save-excursion
>     (goto-char beg)
>     (beginning-of-line)
>     (insert "==")
>     (newline)
>     (goto-char end)
>     (or (bolp) (forward-line 1))
>     (insert "==")
>     (newline)))
Nice. I bound it to the F12 key, but I then encounter

`if: Symbol's function definition is void: use-region-p' in the
minibuffer. Why? Thanks.

- -- 
Merciadri Luca
See http://www.student.montefiore.ulg.ac.be/~merciadri/
- -- 

It's the early bird that gets the worm.
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