GNU bug report logs - #15693
viper-mode disappears when switching to c++-mode using ESC-x but not when using M-x

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Matthew Carter <matthew.p.carter.98 <at> gmail.com>
Subject: bug#15693: closed (Re: bug#15693: viper-mode disappears when
 switching to c++-mode using ESC-x but not when using M-x)
Date: Wed, 23 Oct 2013 18:40:04 +0000

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Your bug report

#15693: viper-mode disappears when switching to c++-mode using ESC-x but not when using M-x

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 15693 <at> debbugs.gnu.org.

-- 
15693: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=15693
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

[Message part 2 (message/rfc822, inline)]

From: Glenn Morris <rgm <at> gnu.org>
To: 15693-done <at> debbugs.gnu.org
Subject: Re: bug#15693: viper-mode disappears when switching to c++-mode using
 ESC-x but not when using M-x
Date: Wed, 23 Oct 2013 14:39:07 -0400

Version: 24.1

Matthew Carter wrote:

> $ emacs --version
> GNU Emacs 23.3.1

Thanks. By experiment, this is fixed in 24.1, so time to upgrade.
Latest is 24.3.

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From: Matthew Carter <matthew.p.carter.98 <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: viper-mode disappears when switching to c++-mode using ESC-x but
 not when using M-x
Date: Wed, 23 Oct 2013 14:29:45 -0400

$ emacs --version
GNU Emacs 23.3.1

$ uname -a
Linux taurus 3.3.7-1.fc16.x86_64 #1 SMP Tue May 22 13:59:39 UTC 2012 
x86_64 x86_64 x86_64 GNU/Linux

$ cat .emacs
(setq viper-mode t)
(require 'viper)

$ cat .viper
(setq viper-no-multiple-ESC 'nil)
(setq viper-inhibit-startup-message 't)
(setq viper-expert-level '5)

$ ls > 1.cpp.ftl

Test 1:
$ emacs 1.cpp.ftl
Press and release the Esc key.
Press and release the x key.
Type "c++-mode" (without the quotes) and press Enter.
Result: Buffer switches to c++-mode but viper-mode is off.

Test 2:
$ emacs 1.cpp.ftl
Press and hold the Meta (Alt) key.
Press and release the x key.
Release the Meta (Alt) key.
Type "c++-mode" (without the quotes) and press Enter.
Result: Buffer switches to c++-mode but viper-mode is on.

I have reproduced these results with 2 different emacs installations 
on 2 different machines, one Linux, one Windows 7.

I expected, in Test 1, for the buffer to remain in viper-mode upon 
switching to c++-mode .  I believe that it is a defect that it lost 
viper-mode.

Please let me know if you have any questions.

Thank you.

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