GNU bug report logs - #32457
26.1.50; automatically set indent-tabs-mode from .gitattributes

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

From: Tom Tromey <tom <at> tromey.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 26.1.50; automatically set indent-tabs-mode from .gitattributes
Date: Thu, 16 Aug 2018 10:50:40 -0600

git can be configured to complain about indenting with tabs
by using "whitespace=tab-in-indent" in .gitattributes.

It would be nice if Emacs automatically detected this and set
indent-tabs-mode to nil.

git attributes can be queried using "git check-attr", for instance:

$ git check-attr whitespace -- src/librustc_codegen_llvm/debuginfo/metadata.rs
src/librustc_codegen_llvm/debuginfo/metadata.rs: whitespace: tab-in-indent,trailing-space,tabwidth=4

Tom




In GNU Emacs 26.1.50 (build 10, x86_64-pc-linux-gnu, GTK+ Version 3.22.30)
 of 2018-08-07 built on pokyo
Repository revision: cd9032532d119b35685dc078b8156023122f6dcd
Windowing system distributor 'Fedora Project', version 11.0.11906000
System Description:	Fedora release 28 (Twenty Eight)

Recent messages:
Mark saved where search started
Invoking man 1 git-config in the background
1 git-config man page formatted
Mark saved where search started [3 times]
Invoking man gitattributes in the background
gitattributes man page formatted
Mark saved where search started
Invoking man 1 git-check-attr in the background
1 git-check-attr man page formatted
ggtags-make-project: (error "‘global’ non-zero exit: global: /home/tromey/Rust/rust/GRTAGS seems corrupted.")

Configured using:
 'configure --prefix=/home/tromey/Emacs/install --with-modules'

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND DBUS GSETTINGS NOTIFY
LIBSELINUX GNUTLS LIBXML2 FREETYPE LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS
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Important settings:
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  locale-coding-system: utf-8-unix

Major mode: Rust

Minor modes in effect:
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Load-path shadows:
/home/tromey/.emacs.d/elpa/bubbles-0.5/bubbles hides /home/tromey/Emacs/install/share/emacs/26.1.50/lisp/play/bubbles

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Memory information:
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Message #8 received at 32457 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Tom Tromey <tom <at> tromey.com>
Cc: 32457 <at> debbugs.gnu.org
Subject: Re: bug#32457: 26.1.50; automatically set indent-tabs-mode from
 .gitattributes
Date: Wed, 18 May 2022 14:18:09 +0200

Tom Tromey <tom <at> tromey.com> writes:

> git can be configured to complain about indenting with tabs
> by using "whitespace=tab-in-indent" in .gitattributes.
>
> It would be nice if Emacs automatically detected this and set
> indent-tabs-mode to nil.
>
> git attributes can be queried using "git check-attr", for instance:
>
> $ git check-attr whitespace -- src/librustc_codegen_llvm/debuginfo/metadata.rs
> src/librustc_codegen_llvm/debuginfo/metadata.rs: whitespace: tab-in-indent,trailing-space,tabwidth=4

(I'm going through old bug reports that unfortunately weren't resolved
at the time.)

I don't think this would be an appropriate feature for Emacs core -- it
would be too surprising if Emacs was setting `indent-tabs-mode' based on
external factors like this (and I'm sure there's a lot of other hints it
could be taking from other VCs).

It does sound like it could be a useful ELPA package, though, but I'm
closing this wishlist item in the Emacs bug tracker.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #15 received at 32457 <at> debbugs.gnu.org (full text, mbox):

From: Robert Pluim <rpluim <at> gmail.com>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: Tom Tromey <tom <at> tromey.com>, 32457 <at> debbugs.gnu.org
Subject: Re: bug#32457: 26.1.50; automatically set indent-tabs-mode from
 .gitattributes
Date: Wed, 18 May 2022 15:31:51 +0200

>>>>> On Wed, 18 May 2022 14:18:09 +0200, Lars Ingebrigtsen <larsi <at> gnus.org> said:

    Lars> Tom Tromey <tom <at> tromey.com> writes:
    >> git can be configured to complain about indenting with tabs
    >> by using "whitespace=tab-in-indent" in .gitattributes.
    >> 
    >> It would be nice if Emacs automatically detected this and set
    >> indent-tabs-mode to nil.
    >> 
    >> git attributes can be queried using "git check-attr", for instance:
    >> 
    >> $ git check-attr whitespace -- src/librustc_codegen_llvm/debuginfo/metadata.rs
    >> src/librustc_codegen_llvm/debuginfo/metadata.rs: whitespace:
    >> tab-in-indent,trailing-space,tabwidth=4

    Lars> (I'm going through old bug reports that unfortunately weren't resolved
    Lars> at the time.)

    Lars> I don't think this would be an appropriate feature for Emacs core -- it
    Lars> would be too surprising if Emacs was setting `indent-tabs-mode' based on
    Lars> external factors like this (and I'm sure there's a lot of other hints it
    Lars> could be taking from other VCs).

    Lars> It does sound like it could be a useful ELPA package, though, but I'm
    Lars> closing this wishlist item in the Emacs bug tracker.

.dir-locals.el supports 'eval', so anyone who wants this could put it there.

Robert
-- 

Message #18 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Rudolf Schlatte <rudi <at> constantly.at>
To: bug-gnu-emacs <at> gnu.org
Subject: Re: bug#32457: 26.1.50;
 automatically set indent-tabs-mode from .gitattributes
Date: Wed, 18 May 2022 16:22:31 +0200

Robert Pluim <rpluim <at> gmail.com> writes:

>>>>>> On Wed, 18 May 2022 14:18:09 +0200, Lars Ingebrigtsen <larsi <at> gnus.org> said:
>
>     Lars> Tom Tromey <tom <at> tromey.com> writes:
>     >> git can be configured to complain about indenting with tabs
>     >> by using "whitespace=tab-in-indent" in .gitattributes.
>     >> 
>     >> It would be nice if Emacs automatically detected this and set
>     >> indent-tabs-mode to nil.
>     >> 
>     >> git attributes can be queried using "git check-attr", for instance:
>     >> 
>     >> $ git check-attr whitespace -- src/librustc_codegen_llvm/debuginfo/metadata.rs
>     >> src/librustc_codegen_llvm/debuginfo/metadata.rs: whitespace:
>     >> tab-in-indent,trailing-space,tabwidth=4
>
>     Lars> (I'm going through old bug reports that unfortunately weren't resolved
>     Lars> at the time.)
>
>     Lars> I don't think this would be an appropriate feature for Emacs core -- it
>     Lars> would be too surprising if Emacs was setting `indent-tabs-mode' based on
>     Lars> external factors like this (and I'm sure there's a lot of other hints it
>     Lars> could be taking from other VCs).
>
>     Lars> It does sound like it could be a useful ELPA package, though, but I'm
>     Lars> closing this wishlist item in the Emacs bug tracker.
>
> .dir-locals.el supports 'eval', so anyone who wants this could put it there.

There is also EditorConfig (https://editorconfig.org,
http://elpa.nongnu.org/nongnu/editorconfig.html) for setting
indent-tabs-mode and other variables according to a configuration file.

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