Skipping the buffer extension .~HEAD~ when choosing major mode during ediff session

Skipping the buffer extension .~HEAD~ when choosing major mode during ediff session

[Nordlöw]

Is there a simple way for emacs to ignore the .~HEAD~ suffix when its
chooses its major-mode based on name of the file/buffer. The .~HEAD~
suffix is typically appended to a temporary buffer name created when
we ediff a file with its vc head version.

The brute-force and ugly way is of course to modify all entries in
auto-mode-alist but that seems far too cumbersome.

If nobody has any clue should I start digging into the code where auto-
mode-alist is used?

Thanks in advance,
Nordlöw

Re: Skipping the buffer extension .~HEAD~ when choosing major mode during ediff session

[Johan Bockgård]

Nordlöw <per.nordlow@gmail.com> writes:

> Is there a simple way for emacs to ignore the .~HEAD~ suffix when its
> chooses its major-mode based on name of the file/buffer. The .~HEAD~
> suffix is typically appended to a temporary buffer name created when
> we ediff a file with its vc head version.

Emacs versions >= 22.2 already do the right thing.

-- 
Johan Bockgård

Re: Skipping the buffer extension .~HEAD~ when choosing major mode during ediff session

[Kevin Rodgers]

Johan Bockgård wrote:
> Nordlöw <per.nordlow@gmail.com> writes:
> 
>> Is there a simple way for emacs to ignore the .~HEAD~ suffix when its
>> chooses its major-mode based on name of the file/buffer. The .~HEAD~
>> suffix is typically appended to a temporary buffer name created when
>> we ediff a file with its vc head version.
> 
> Emacs versions >= 22.2 already do the right thing.

If one wanted to explain to Nordlöw how Emacs 22.2 does it, where would
one look?  There's no mention in etc/NEWS.

-- 
Kevin Rodgers
Denver, Colorado, USA

Re: Skipping the buffer extension .~HEAD~ when choosing major mode during ediff session

[Johan Bockgård]

Kevin Rodgers <kevin.d.rodgers@gmail.com> writes:

> Johan Bockgård wrote:
>> Nordlöw <per.nordlow@gmail.com> writes:
>>
>>> Is there a simple way for emacs to ignore the .~HEAD~ suffix when its
>>> chooses its major-mode based on name of the file/buffer. The .~HEAD~
>>> suffix is typically appended to a temporary buffer name created when
>>> we ediff a file with its vc head version.
>>
>> Emacs versions >= 22.2 already do the right thing.
>
> If one wanted to explain to Nordlöw how Emacs 22.2 does it, where would
> one look?  There's no mention in etc/NEWS.

[file-name-sans-versions]

 			 (length name))
 		   (if keep-backup-version
 		       (length name)
-		     (or (string-match "\\.~[0-9.]+~\\'" name)
+		     (or (string-match "\\.~[-[:alnum:]:#@^._]+~\\'" name)
 			 (string-match "~\\'" name)
 			 (length name))))))))

-- 
Johan Bockgård