address@hidden: [sh-script] Erroneous syntax highlighting of "[[ ]]" expressions with zsh]

[Richard M. Stallman]

Since the Font Lock facilities are limited, it may be impossible to
handle these cases right.  But could someone who understands Font Lock
please try?


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To: address@hidden
Date: Sun, 11 Dec 2005 15:38:47 +0100 (CET)
From: address@hidden (jerome)
Subject: [sh-script] Erroneous syntax highlighting of "[[ ]]" expressions
        with zsh
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This bug report will be sent to the Free Software Foundation,
not to your local site managers!
Please write in English, because the Emacs maintainers do not have
translators to read other languages for them.

Your bug report will be posted to the address@hidden mailing list,
and to the gnu.emacs.bug news group.

In GNU Emacs 21.4.1 (x86_64-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2005-10-04 on athlon, modified by Debian
configured using `configure '--build=x86_64-linux-gnu' 
'--host=x86_64-linux-gnu' '--prefix=/usr' '--sharedstatedir=/var/lib' 
'--libexecdir=/usr/lib' '--localstatedir=/var/lib' '--infodir=/usr/share/info' 
'--mandir=/usr/share/man' '--with-pop=yes' '--with-x=yes' 
'--with-x-toolkit=athena' 'CFLAGS=-DDEBIAN -g -O2' 
'build_alias=x86_64-linux-gnu' 'host_alias=x86_64-linux-gnu''
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: fr_FR.UTF-8
  locale-coding-system: utf-8
  default-enable-multibyte-characters: t

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

This is Debian bug #335712 
(http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=335712)

Thanks in advance.

- ----------------------------

Consider the following file

#!/bin/zsh
if [[ x == x ]] then
  echo OK
fi
if [[ x == x ]]; then
  echo OK
fi

opened in Shell-script[zsh] mode. The first "then" is not colored
(but the second one is).

Moreover, in the condition "x == x", the first x is colored (this
is incorrect, IMHO), while the second one isn't (OK).

- ----------------------------

It seems that bash makes the ";" mandatory after "]]" while zsh does
not.


Recent input:
s SPC i n SPC a d v a n c e . <return> <return> C h 
e e r s , <down-mouse-1> <mouse-1> <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> <down-mouse-1> 
<mouse-1> SPC D a n i e l <down-mouse-1> <mouse-1> 
<backspace> ? C-c C-c , i M-u q g <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
SPC SPC q <help-echo> <help-echo> M-x C-h C-g C-g C-g 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <menu-bar> <help-menu> <re
port-emacs-bug>

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