GNU bug report logs - #39545
26.3; C-S-a gets translated to C-a in message-mode

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

From: kuba.orlik <at> sealcode.org (Kuba Orlik (sealcode.org))
To: bug-gnu-emacs <at> gnu.org
Subject: 26.3; C-S-a gets translated to C-a in message-mode
Date: Mon, 10 Feb 2020 12:39:19 +0100

1. M-x message-mode
2. Enter some text
3. Press C-S-a

The point moves to the beggining of the line, but doesn't select the
text along the way, as C-S-a usually does


In GNU Emacs 26.3 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.10)
 of 2019-08-29 built on juergen
Windowing system distributor 'The X.Org Foundation', version 11.0.12007000
System Description:	Manjaro Linux

Recent messages:
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Are you sure you want to execute 1 mark? (y or n) y [2 times]
Are you sure you want to execute 2 marks? (y or n) y
Are you sure you want to execute 1 mark? (y or n) y
Template key: 
Invalid key ‘r’
Template key: 
Invalid key ‘e’
Template key: 
user-error: Abort
Quit
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Message #8 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Eric Abrahamsen <eric <at> ericabrahamsen.net>
To: kuba.orlik--- via "Bug reports for GNU Emacs, the Swiss army knife of
 text editors" <bug-gnu-emacs <at> gnu.org>
Cc: 39545 <at> debbugs.gnu.org, "Kuba Orlik sealcode.org" <kuba.orlik <at> sealcode.org>
Subject: Re: bug#39545: 26.3; C-S-a gets translated to C-a in message-mode
Date: Mon, 10 Feb 2020 10:36:02 -0800

kuba.orlik--- via "Bug reports for GNU Emacs, the Swiss army knife of
text editors" <bug-gnu-emacs <at> gnu.org> writes:

> 1. M-x message-mode
> 2. Enter some text
> 3. Press C-S-a
>
> The point moves to the beggining of the line, but doesn't select the
> text along the way, as C-S-a usually does

C-S-a doesn't "usually" do that -- maybe it's a part of `cua-mode', and
that's not getting enabled in `message-mode'? That's a guess, but if
it's a correct guess, you should be able to figure out why `cua-mode'
isn't enabled in message composition buffers.

Message #14 received at 39545 <at> debbugs.gnu.org (full text, mbox):

From: Noam Postavsky <npostavs <at> gmail.com>
To: Eric Abrahamsen <eric <at> ericabrahamsen.net>
Cc: 39545 <at> debbugs.gnu.org, kuba.orlik <at> sealcode.org
Subject: Re: bug#39545: 26.3; C-S-a gets translated to C-a in message-mode
Date: Mon, 10 Feb 2020 14:07:28 -0500

Eric Abrahamsen <eric <at> ericabrahamsen.net> writes:

> kuba.orlik--- via "Bug reports for GNU Emacs, the Swiss army knife of
> text editors" <bug-gnu-emacs <at> gnu.org> writes:
>
>> 1. M-x message-mode
>> 2. Enter some text
>> 3. Press C-S-a
>>
>> The point moves to the beggining of the line, but doesn't select the
>> text along the way, as C-S-a usually does
>
> C-S-a doesn't "usually" do that -- maybe it's a part of `cua-mode', and
> that's not getting enabled in `message-mode'?

It's enabled by transient-mark-mode which is turned on by default.  I
think the problem is that in message-mode C-a is bound to
message-beginning-of-line which misses the "^" in its interactive
string.

Message #17 received at 39545 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Eric Abrahamsen <eric <at> ericabrahamsen.net>
Cc: 39545 <at> debbugs.gnu.org, kuba.orlik <at> sealcode.org
Subject: Re: bug#39545: 26.3; C-S-a gets translated to C-a in message-mode
Date: Mon, 10 Feb 2020 21:13:38 +0200

> From: Eric Abrahamsen <eric <at> ericabrahamsen.net>
> Date: Mon, 10 Feb 2020 10:36:02 -0800
> Cc: kuba.orlik <at> sealcode.org
> 
> > 1. M-x message-mode
> > 2. Enter some text
> > 3. Press C-S-a
> >
> > The point moves to the beggining of the line, but doesn't select the
> > text along the way, as C-S-a usually does
> 
> C-S-a doesn't "usually" do that -- maybe it's a part of `cua-mode'

No, it's a normal Emacs "shift-selection" feature: any cursor motion
command (C-a in this case) typed with the Shift key held will select
the text it moves across.  You can see it in *scratch* in "emacs -Q",
even.

> and that's not getting enabled in `message-mode'?

No, I think it's because in message-mode C-a is bound to
message-beginning-of-line, and that doesn't have "^" in its
interactive spec, like beginning-of-line does.

Message #20 received at 39545 <at> debbugs.gnu.org (full text, mbox):

From: Eric Abrahamsen <eric <at> ericabrahamsen.net>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 39545 <at> debbugs.gnu.org, kuba.orlik <at> sealcode.org
Subject: Re: bug#39545: 26.3; C-S-a gets translated to C-a in message-mode
Date: Mon, 10 Feb 2020 11:38:33 -0800

On 02/10/20 21:13 PM, Eli Zaretskii wrote:
>> From: Eric Abrahamsen <eric <at> ericabrahamsen.net>
>> Date: Mon, 10 Feb 2020 10:36:02 -0800
>> Cc: kuba.orlik <at> sealcode.org
>> 
>> > 1. M-x message-mode
>> > 2. Enter some text
>> > 3. Press C-S-a
>> >
>> > The point moves to the beggining of the line, but doesn't select the
>> > text along the way, as C-S-a usually does
>> 
>> C-S-a doesn't "usually" do that -- maybe it's a part of `cua-mode'
>
> No, it's a normal Emacs "shift-selection" feature: any cursor motion
> command (C-a in this case) typed with the Shift key held will select
> the text it moves across.  You can see it in *scratch* in "emacs -Q",
> even.
>
>> and that's not getting enabled in `message-mode'?
>
> No, I think it's because in message-mode C-a is bound to
> message-beginning-of-line, and that doesn't have "^" in its
> interactive spec, like beginning-of-line does.

Oops, thanks to both of you for the correction! I tested in *scratch*
and saw "C-e (translated from C-S-e) runs the command move-end-of-line"
and checked no further.

Maybe we can see what Lars thinks about changing the interactive spec
for the message function.

Message #27 received at 39545 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: Eric Abrahamsen <eric <at> ericabrahamsen.net>, 39545 <at> debbugs.gnu.org,
 kuba.orlik <at> sealcode.org
Subject: Re: bug#39545: 26.3; C-S-a gets translated to C-a in message-mode
Date: Thu, 20 Aug 2020 16:12:24 +0200

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

>> and that's not getting enabled in `message-mode'?
>
> No, I think it's because in message-mode C-a is bound to
> message-beginning-of-line, and that doesn't have "^" in its
> interactive spec, like beginning-of-line does.

I've now added this in Emacs 28.

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

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