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From: Marc Tfardy <m-t-o___CUT_IT___@web.de>
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Subject: Re: problems with save-excursion
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Marc Tfardy schrieb:
> filcab@gmail.com schrieb:
>> I have the following function:
>> (defun copy-line ()
>>    (interactive)
>>    (save-excursion
>>       (beginning-of-line)
>>       (set-mark-command)
>>       (end-of-line)
>>       (copy-region-as-kill)))
>>
>> But it's not working...
>> It says:
>> save-excursion: Wrong number of arguments: #[(arg) ... (some trash)
>>
>>
>> Any clues?
> 
> You may try:
> 
> (defun copy-line ()
>   (interactive)
>   (save-excursion
>     (let (beg)
>       (beginning-of-line)
>       (setq beg (point))
>       (end-of-line)
>       (copy-region-as-kill beg (point)))))
> 

Second and shorter version:

(defun copy-line ()
   (interactive)
   (copy-region-as-kill (line-beginning-position)
                        (line-end-position)))


Marc