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Subject: | gzip.exe as symlink breaks NTEmacs's jka-compr.el |
From: | Matt Swift <swift AT alum DOT mit DOT edu> |
Date: | Mon, 15 Jul 2002 01:36:31 -0400 |
Message-ID: | <m2znwtbli8.fsf@swift.shore.net> |
Lines: | 34 |
User-Agent: | Gnus/5.090007 (Oort Gnus v0.07) Emacs/20.7 |
(i386-debian-linux-gnu) | |
MIME-Version: | 1.0 |
Cygwin package gzip 1.3.3 made the change (from 1.3.2) that /bin/gzip is a symlink to /bin/gunzip instead of the other way around. This change breaks NTEmacs 20.7 and 21.1 on Win2k. To reproduce, try evaluating (call-process "gzip" nil '(t t) nil "--version") and Emacs will either freeze until you issue multiple C-g's or Win2k will popup an "illegal instruction" error dialog. The common and useful package jka-compr.el (when loaded) by default invokes `call-process' on "gzip" to uncompress as well as compress files, rather than "gunzip". You get similar errors if you invoke `call-process' on any of the symlinks in /cygwin/bin (e.g., awk.exe -> gawk.exe). Initial workaround: cp /bin/gunzip.exe /usr/local/bin/gzip.exe (assuming /usr/local/bin is in the PATH (NTEmacs's `exec-path' before /bin). Could also change a jka-compr variable to use "gunzip" instead of "gzip", but that seems less robust (other Emacs-Lisp code probably calls "gzip" too). I wasted more than an hour tracking down this bug (not a bug in Cygwin per se, really, but a change that caused a bug with software very commonly used with Cygwin). I didn't look hard, but I found no comment in the gzip 1.3.3 sources indicating why the change was made in the symlinks. Please don't change things that are not broken! -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
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