GNU bug report logs - #5304
Subject: 23.1.91; comment-start in fundamental-mode

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From: Andreas Roehler <andreas.roehler <at> online.de>
To: emacs-pretest-bug <at> gnu.org
Subject: bug#5304: Subject: 23.1.91; comment-start in fundamental-mode
Date: Sun, 03 Jan 2010 21:09:50 +0100

Hi,

after emacs -q
`comment-start' is available in fundamental mode as a global variable.
Once set, it retains its value for other buffers.

IMO `comment-start' should not exist in fundamental mode,
also it should be buffer local from the very beginning.

Below a recipe to reproduce the bug:

emacs -q
scratch-buffer
M-x fundamental-mode
\C-h v comment-start

==>

comment-start is a variable defined in `newcomment.el'.
Its value is nil

  This variable is safe as a file local variable if its value
  satisfies the predicate `string-or-null-p'.

Documentation:
*String to insert to start a new comment, or nil if no comment syntax.

;;;;;;;;;;;;

(setq comment-start "abc")
\C-h v comment-start

==>

comment-start is a variable defined in `newcomment.el'.
Its value is "abc"

...

;;;;;;;;;;;;;

Now kill buffer, ask again: same result.
`comment-start' is remembered throughout buffers as "abc".

So far, thanks all

Andreas

BTW emacs-pretest-bug <at> gnu.org still active, think it should be deactivated(?)

--
https://code.launchpad.net/s-x-emacs-werkstatt/

;;;;;;;;;;;;;;;;;;;;;;;;

In GNU Emacs 23.1.91.1 (i686-pc-linux-gnu, GTK+ Version 2.12.0)
 of 2010-01-01
Windowing system distributor `The X.Org Foundation', version 11.0.70200000
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: de_DE.UTF-8
  value of $XMODIFIERS: @im=local
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Fundamental

Minor modes in effect:
  tooltip-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
C-h v c o m m e n t - s r <backspace> t a r t <return>
M-x f u n d a m e n t a l - m o <tab> <return> C-h
v <up> <return> M-x r e p o r t - e m a c s - b u <tab>
<return>

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