--- Begin Message ---
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Subject: |
23.2; shell-script[bash] doesn't handle bitshift $(( 1 << 16 )) |
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Date: |
Fri, 06 May 2011 15:38:05 -0700 |
In shell-script mode (bash minor mode) Emacs 23.2 incorrectly parses the
following line as a HERE DOCUMENT.
echo $(( 1 << 16 ))
It is confused because sh-font-lock-open-heredoc (in sh-script.el)
does not know about bash's ARITHMETIC EXPANSION. There should be a
function, similar to sh-in-comment-or-string, which parses the
script looking for arithmetic expansion.
As a temporary workaround for users, I believe it is legal to put double
quotes around any arithmetic expansion to force emacs to view it as a
string.
In GNU Emacs 23.2.1 (i486-pc-linux-gnu, GTK+ Version 2.20.0)
of 2010-12-11 on raven, modified by Debian
configured using `configure '--build' 'i486-linux-gnu' '--build'
'i486-linux-gnu' '--prefix=/usr' '--sharedstatedir=/var/lib'
'--libexecdir=/usr/lib' '--localstatedir=/var/lib' '--infodir=/usr/share/info'
'--mandir=/usr/share/man' '--with-pop=yes'
'--enable-locallisppath=/etc/emacs23:/etc/emacs:/usr/local/share/emacs/23.2/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/23.2/site-lisp:/usr/share/emacs/site-lisp:/usr/share/emacs/23.2/leim'
'--with-x=yes' '--with-x-toolkit=gtk' '--with-toolkit-scroll-bars'
'build_alias=i486-linux-gnu' 'CFLAGS=-DDEBIAN -g -O2' 'LDFLAGS=-g' 'CPPFLAGS=''
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 $XMODIFIERS: nil
locale-coding-system: utf-8-unix
default enable-multibyte-characters: t
Major mode: Shell-script
Minor modes in effect:
shell-dirtrack-mode: t
gpm-mouse-mode: t
which-function-mode: t
show-paren-mode: t
display-time-mode: t
recentf-mode: t
iswitchb-mode: t
tooltip-mode: t
mouse-wheel-mode: t
tool-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
auto-encryption-mode: t
auto-compression-mode: t
size-indication-mode: t
line-number-mode: t
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--- Begin Message ---
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Subject: |
Re: bug#15941: 24.2; Shell-script mode's syntax highligting gets confused by shift (<<) operator like in '$((1 << 32)) |
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Date: |
Wed, 20 Nov 2013 20:41:00 -0500 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) |
> 2. add this line to it
> echo $((1 << 32))
> everything that follows this line will be highlighted as though it
> is a comment
[...]
> In GNU Emacs 24.2.1 (x86_64-redhat-linux-gnu, GTK+ Version 3.6.4)
Thank you. This is already fixed in 24.3.
Stefan
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