GNU bug report logs - #8843
23.3; Scheme-mode: Faulty syntax highlighting

Previous Next

To add a comment to this bug, you must first unarchive it, by sending
a message to control AT debbugs.gnu.org, with unarchive 8843 in the body.
You can then email your comments to 8843 AT debbugs.gnu.org in the normal way.

Toggle the display of automated, internal messages from the tracker.

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

From: Simen Heggestøyl <simenheg <at> ifi.uio.no>
To: bug-gnu-emacs <at> gnu.org
Subject: 23.3; Scheme-mode: Faulty syntax highlighting
Date: Sun, 12 Jun 2011 14:16:34 +0200

How to trig the bug, starting from emacs -Q:
 1. Type: M-x scheme-mode RET
 2. Type: (define abcæøå)

The string is highlighted until the "æøå"-part. Æ, ø and å are common
letters in some Nordic alphabets. Also, the word movement commands
(forward-word etc.) doesn't seem to treat æ, ø and å as part of the
word. I think this is faulty, as æ/Æ, ø/Ø and å/Å are all legit
Scheme-symbols. Lisp-mode and emacs-lisp-mode seem to handle these
characters as expected. This may be a problem for other foreign
characters too, I don't know.

Output from the 'locale' program:
LANG=en_US.UTF-8
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=


In GNU Emacs 24.0.50.1 (i686-pc-linux-gnu, GTK+ Version 2.24.4)
 of 2011-06-12 on archtop
Windowing system distributor `The X.Org Foundation', version 11.0.11002000
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: en_US.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Scheme

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
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
M-x s c h e m e - m o d e <return> ( d e f i n e SPC 
a b c æ ø å ) M-x r e p o r t - <tab> <return>

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.

Load-path shadows:
None found.

Features:
(shadow sort gnus-util time-date mail-extr message sendmail regexp-opt
format-spec rfc822 mml easymenu mml-sec mm-decode mm-bodies mm-encode
mail-parse rfc2231 rfc2047 rfc2045 ietf-drums mm-util mail-prsvr
mailabbrev mail-utils gmm-utils mailheader emacsbug scheme tooltip
ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd tool-bar dnd
fontset image fringe lisp-mode register page menu-bar rfn-eshadow timer
select scroll-bar mouse jit-lock font-lock syntax facemenu font-core
frame cham georgian utf-8-lang misc-lang vietnamese tibetan thai
tai-viet lao korean japanese hebrew greek romanian slovak czech european
ethiopic indian cyrillic chinese case-table epa-hook jka-cmpr-hook help
simple abbrev minibuffer loaddefs button faces cus-face files
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget hashtable-print-readable backquote make-network-process
dbusbind dynamic-setting system-font-setting font-render-setting
move-toolbar gtk x-toolkit x multi-tty emacs)

Message #8 received at 8843 <at> debbugs.gnu.org (full text, mbox):

From: Chong Yidong <cyd <at> stupidchicken.com>
To: Simen Heggestøyl <simenheg <at> ifi.uio.no>
Cc: 8843 <at> debbugs.gnu.org
Subject: Re: bug#8843: 23.3; Scheme-mode: Faulty syntax highlighting
Date: Sun, 21 Aug 2011 23:39:37 -0400

Simen Heggestøyl <simenheg <at> ifi.uio.no> writes:

> How to trig the bug, starting from emacs -Q:
>  1. Type: M-x scheme-mode RET
>  2. Type: (define abcæøå)
>
> The string is highlighted until the "æøå"-part. Æ, ø and å are common
> letters in some Nordic alphabets. Also, the word movement commands
> (forward-word etc.) doesn't seem to treat æ, ø and å as part of the
> word. I think this is faulty, as æ/Æ, ø/Ø and å/Å are all legit
> Scheme-symbols. Lisp-mode and emacs-lisp-mode seem to handle these
> characters as expected. This may be a problem for other foreign
> characters too, I don't know.

I've committed a fix to the trunk (for Emacs 24.1).  Thanks for the bug
report.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.