GNU bug report logs - #65702
30.0.50; compile-command not honored in shell buffers

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Matthias Meulien <orontee <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 30.0.50; compile-command not honored in shell buffers
Date: Sat, 02 Sep 2023 15:39:20 +0200

I customize the default compile command using directory local
variables. For example, with a '.dir-locals' containing the following:

;;; Directory Local Variables            -*- no-byte-compile: t -*-
;;; For more information see (info "(emacs) Directory Variables")

((nil . ((compilation-search-path . (nil "builddir"))
	 (compile-command . "meson setup builddir . --cross-file crossfile_arm.ini ; pushd builddir && meson compile ; popd")
	 (compilation-environment . ("TERM=ansi"))
	 (ispell-local-dictionary . "en")
	 (project-vc-merge-submodules . nil)))
 (c++-mode . ((c-basic-offset . 2)
	      (indent-tabs-mode . nil))))

When I enter the *vc-dir* buffer for the corresponding Git local
repository, and I press 'C-x p c' ('project-compile' command) then the
default compile command has the value specified in the previous
'.dir-locals.el'.

Same with 'meson.build', 'README.md', '*.cc', '*.h', etc. files.

But when 'project-compile' is called from a shell buffer after I pressed
'C-x p s' then the default compile command is 'make -k'.  This is
strange and looks like a bug to my eyes.

(I successfully reproduced from 'emacs -Q').



In GNU Emacs 30.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version
 3.24.37, cairo version 1.16.0) of 2023-08-30 built on carbon
Repository revision: 297ccd967f24e37bc51c057da43c862291a55ddd
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101007
System Description: Debian GNU/Linux 12 (bookworm)

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
JSON LCMS2 LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 M17N_FLT MODULES NOTIFY
INOTIFY PDUMPER PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF
TOOLKIT_SCROLL_BARS TREE_SITTER WEBP X11 XDBE XIM XINPUT2 XPM GTK3 ZLIB

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Load-path shadows:
/home/matthias/.config/emacs/elpa/dictionary-20201001.1727/dictionary hides /usr/local/share/emacs/30.0.50/lisp/net/dictionary

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Message #8 received at 65702 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Matthias Meulien <orontee <at> gmail.com>
Cc: 65702 <at> debbugs.gnu.org
Subject: Re: bug#65702: 30.0.50; compile-command not honored in shell buffers
Date: Sat, 02 Sep 2023 16:59:30 +0300

> From: Matthias Meulien <orontee <at> gmail.com>
> Date: Sat, 02 Sep 2023 15:39:20 +0200
> 
> 
> I customize the default compile command using directory local
> variables. For example, with a '.dir-locals' containing the following:
> 
> ;;; Directory Local Variables            -*- no-byte-compile: t -*-
> ;;; For more information see (info "(emacs) Directory Variables")
> 
> ((nil . ((compilation-search-path . (nil "builddir"))
> 	 (compile-command . "meson setup builddir . --cross-file crossfile_arm.ini ; pushd builddir && meson compile ; popd")
> 	 (compilation-environment . ("TERM=ansi"))
> 	 (ispell-local-dictionary . "en")
> 	 (project-vc-merge-submodules . nil)))
>  (c++-mode . ((c-basic-offset . 2)
> 	      (indent-tabs-mode . nil))))
> 
> When I enter the *vc-dir* buffer for the corresponding Git local
> repository, and I press 'C-x p c' ('project-compile' command) then the
> default compile command has the value specified in the previous
> '.dir-locals.el'.
> 
> Same with 'meson.build', 'README.md', '*.cc', '*.h', etc. files.
> 
> But when 'project-compile' is called from a shell buffer after I pressed
> 'C-x p s' then the default compile command is 'make -k'.  This is
> strange and looks like a bug to my eyes.

Aren't directory-local variables in effect only in file-visiting
buffers?  The shell buffer created by "C-x p s" doesn't visit a file,
so I think directory-local variables are not in effect for it.

Message #11 received at 65702 <at> debbugs.gnu.org (full text, mbox):

From: Matthias Meulien <orontee <at> gmail.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 65702 <at> debbugs.gnu.org
Subject: Re: bug#65702: 30.0.50; compile-command not honored in shell buffers
Date: Sun, 03 Sep 2023 09:30:04 +0200

Eli Zaretskii <eliz <at> gnu.org> writes:

>> From: Matthias Meulien <orontee <at> gmail.com>
>> Date: Sat, 02 Sep 2023 15:39:20 +0200
>> 
>> 
>> I customize the default compile command using directory local
>> variables. For example, with a '.dir-locals' containing the following:
>> 
>> ;;; Directory Local Variables            -*- no-byte-compile: t -*-
>> ;;; For more information see (info "(emacs) Directory Variables")
>> 
>> ((nil . ((compilation-search-path . (nil "builddir"))
>> 	 (compile-command . "meson setup builddir . --cross-file crossfile_arm.ini ; pushd builddir && meson compile ; popd")
>> 	 (compilation-environment . ("TERM=ansi"))
>> 	 (ispell-local-dictionary . "en")
>> 	 (project-vc-merge-submodules . nil)))
>>  (c++-mode . ((c-basic-offset . 2)
>> 	      (indent-tabs-mode . nil))))
>> 
>> When I enter the *vc-dir* buffer for the corresponding Git local
>> repository, and I press 'C-x p c' ('project-compile' command) then the
>> default compile command has the value specified in the previous
>> '.dir-locals.el'.
>> 
>> Same with 'meson.build', 'README.md', '*.cc', '*.h', etc. files.
>> 
>> But when 'project-compile' is called from a shell buffer after I pressed
>> 'C-x p s' then the default compile command is 'make -k'.  This is
>> strange and looks like a bug to my eyes.
>
> Aren't directory-local variables in effect only in file-visiting
> buffers?  The shell buffer created by "C-x p s" doesn't visit a file,
> so I think directory-local variables are not in effect for it.

Oh thank you!  I now understand, I should have realized that the same
behavior is observable in *xref*, or *Occur* buffers.  Thank you Eli.
Sorry for the annoyance. 

I'll override 'project-compile' in order to use the 'compile-command'
set for the project-root directory.  It'll be ok for my use case.
-- 
Matthias

Message #16 received at 65702-done <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Matthias Meulien <orontee <at> gmail.com>
Cc: 65702-done <at> debbugs.gnu.org
Subject: Re: bug#65702: 30.0.50; compile-command not honored in shell buffers
Date: Sun, 03 Sep 2023 11:04:52 +0300

> From: Matthias Meulien <orontee <at> gmail.com>
> Cc: 65702 <at> debbugs.gnu.org
> Date: Sun, 03 Sep 2023 09:30:04 +0200
> 
> Eli Zaretskii <eliz <at> gnu.org> writes:
> 
> > Aren't directory-local variables in effect only in file-visiting
> > buffers?  The shell buffer created by "C-x p s" doesn't visit a file,
> > so I think directory-local variables are not in effect for it.
> 
> Oh thank you!  I now understand, I should have realized that the same
> behavior is observable in *xref*, or *Occur* buffers.  Thank you Eli.
> Sorry for the annoyance. 
> 
> I'll override 'project-compile' in order to use the 'compile-command'
> set for the project-root directory.  It'll be ok for my use case.

No problem, I'm therefore closing this bug.

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