* bug#6731: Can tramp load .dir-locals.el in a project?
[not found] ` <m1wrsavakh.fsf@cam.ac.uk>
@ 2010-08-02 14:36 ` Michael Albinus
0 siblings, 0 replies; only message in thread
From: Michael Albinus @ 2010-08-02 14:36 UTC (permalink / raw)
To: Leo; +Cc: tramp-devel, 6731
Leo <sdl.web@gmail.com> writes:
> On 2010-05-20 17:04 +0100, Michael Albinus wrote:
>> | If you put a file with a special name `.dir-locals.el'(1) in a
>> | directory, Emacs will read it when it visits any file in that directory
>> | or any of its subdirectories, and apply the settings it specifies to
>> | the file's buffer. Emacs searches for `.dir-locals.el' starting in the
>> | directory of the visited file, and moving up the directory tree. (To
>> | avoid slowdown, this search is skipped for remote files.)
>>
>> I wouldn't like to overrule this on my own. If you believe it is
>> important, you might ask on the emacs-devel mailing list for this. Maybe
>> one could enable this by a custom variable.
>
> I have reported this as a bug.¹ I think it is important enough for the
> .dir-locals.el to be loaded, otherwise, users end up editing files in a
> way non-conforming to the requirement of a project and editing is the
> most important reason to use tramp for the comfort of Emacs.
>
> Would be interesting to hear your thought and input. Thanks.
Loading .dir-locals.el is a non-trivial operation, because several
directories must be traversed for existence check of such a file,
starting at the current directory, and navigating up to "/". This might
be time-consuming.
I suspect, this is the reason it has been disabled for remote
directories.
One could improve the checks by adding a new file name handler for
searching and loading of .dir-locals.el. This would allow to apply all
checks at once on the remote side, with a better performance.
A similar file name handler was introduced for `vc-registered', which
was improved by a special implementation for remote files.
> Kind regards,
> Leo
Best regards, Michael.
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