indenting automatically after pasting in c-mode

indenting automatically after pasting in c-mode

[Dirk80]

Hi,

I use emacs mainly to write c-code. 

For example I paste 10 lines of code into a function. Now this 10 lines of
code are just inserted into the buffer as they are and not indented. I have
to mark these 10 lines, and then pressing TAB (indent-for-tab-command) and
everything is fine.

It would be great if the 10 lines would be intended automatically (without
marking the 10 lines and then pressing tab) when I paste them.

How could I solve this? Do I have to write an own elisp-function which is
doing the job and then binding it in c-mode to C-y. Or is this behaviour
already implemented?

Thanks for your answers.
Dirk
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Re: indenting automatically after pasting in c-mode

[Bernardo]

> Hi,
> 
> I use emacs mainly to write c-code. 
> 
> For example I paste 10 lines of code into a function. Now this 10 lines of
> code are just inserted into the buffer as they are and not indented. I have
> to mark these 10 lines, and then pressing TAB (indent-for-tab-command) and
> everything is fine.
> 
> It would be great if the 10 lines would be intended automatically (without
> marking the 10 lines and then pressing tab) when I paste them.
> 
> How could I solve this? Do I have to write an own elisp-function which is
> doing the job and then binding it in c-mode to C-y. Or is this behaviour
> already implemented?
> 
> Thanks for your answers.
> Dirk


this slightly modified tip from 
http://emacs.wordpress.com/2007/01/22/killing-yanking-and-copying-lines/
seems to work fine

(defadvice yank (after indent-region activate)
   (when (member major-mode '(c++-mode emacs-lisp-mode python-mode c-mode))
     (unless mark-active
       (exchange-point-and-mark))
     (indent-region (region-beginning) (region-end) nil)))

Re: indenting automatically after pasting in c-mode

[Dirk80]

Fantastic. This is exactly what I was looking for. Thank you very much. 


Bernardo Bacic wrote:
> 
>> Hi,
>> 
>> I use emacs mainly to write c-code. 
>> 
>> For example I paste 10 lines of code into a function. Now this 10 lines
>> of
>> code are just inserted into the buffer as they are and not indented. I
>> have
>> to mark these 10 lines, and then pressing TAB (indent-for-tab-command)
>> and
>> everything is fine.
>> 
>> It would be great if the 10 lines would be intended automatically
>> (without
>> marking the 10 lines and then pressing tab) when I paste them.
>> 
>> How could I solve this? Do I have to write an own elisp-function which is
>> doing the job and then binding it in c-mode to C-y. Or is this behaviour
>> already implemented?
>> 
>> Thanks for your answers.
>> Dirk
> 
> 
> this slightly modified tip from 
> http://emacs.wordpress.com/2007/01/22/killing-yanking-and-copying-lines/
> seems to work fine
> 
> (defadvice yank (after indent-region activate)
>    (when (member major-mode '(c++-mode emacs-lisp-mode python-mode
> c-mode))
>      (unless mark-active
>        (exchange-point-and-mark))
>      (indent-region (region-beginning) (region-end) nil)))
> 
> 
> 
> 
> 
> 

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Re: indenting automatically after pasting in c-mode

[Dirk80]

Because I like to continue after the yanked code I repositioned the point
after indentation.

(defadvice yank (after indent-region activate) 
  (when (member major-mode '(c++-mode emacs-lisp-mode python-mode c-mode)) 
	(unless mark-active 
	  (exchange-point-and-mark)) 
	(indent-region (region-beginning) (region-end) nil)
	(goto-char (region-end))))

Now it is doing exactly what I want.


Dirk80 wrote:
> 
> Fantastic. This is exactly what I was looking for. Thank you very much. 
> 
> 
> Bernardo Bacic wrote:
>> 
>>> Hi,
>>> 
>>> I use emacs mainly to write c-code. 
>>> 
>>> For example I paste 10 lines of code into a function. Now this 10 lines
>>> of
>>> code are just inserted into the buffer as they are and not indented. I
>>> have
>>> to mark these 10 lines, and then pressing TAB (indent-for-tab-command)
>>> and
>>> everything is fine.
>>> 
>>> It would be great if the 10 lines would be intended automatically
>>> (without
>>> marking the 10 lines and then pressing tab) when I paste them.
>>> 
>>> How could I solve this? Do I have to write an own elisp-function which
>>> is
>>> doing the job and then binding it in c-mode to C-y. Or is this behaviour
>>> already implemented?
>>> 
>>> Thanks for your answers.
>>> Dirk
>> 
>> 
>> this slightly modified tip from 
>> http://emacs.wordpress.com/2007/01/22/killing-yanking-and-copying-lines/
>> seems to work fine
>> 
>> (defadvice yank (after indent-region activate)
>>    (when (member major-mode '(c++-mode emacs-lisp-mode python-mode
>> c-mode))
>>      (unless mark-active
>>        (exchange-point-and-mark))
>>      (indent-region (region-beginning) (region-end) nil)))
>> 
>> 
>> 
>> 
>> 
>> 
> 
> 

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Re: indenting automatically after pasting in c-mode

[Colin S. Miller]

Dirk80 wrote:
> Hi,
> 
> I use emacs mainly to write c-code. 
> 
> For example I paste 10 lines of code into a function. Now this 10 lines of
> code are just inserted into the buffer as they are and not indented. I have
> to mark these 10 lines, and then pressing TAB (indent-for-tab-command) and
> everything is fine.
> 
> It would be great if the 10 lines would be intended automatically (without
> marking the 10 lines and then pressing tab) when I paste them.
> 
> How could I solve this? Do I have to write an own elisp-function which is
> doing the job and then binding it in c-mode to C-y. Or is this behaviour
> already implemented?
> 
> Thanks for your answers.
> Dirk

Not sure if it help much,
but ident-region will reindent a block of text correctly.


HTH,
Colin S. Miller

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