Bug 126403 – a2ps: psset duplex corrupts postscript with ^Ountdictstack instead of countdictstack

• Product: Gentoo Linux
• Status: RESOLVED FIXED

[Description Phil Pennock 2006-03-16 03:43:07 UTC]

app-text/a2ps ships psset (shell script); psset -d (to set duplex) creates corrupt postscript.
See also: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=163780
which notes that it only happens with some versions of sed installed; (I'd comment there but don't want Yet Another Bugzilla Logon).

It's caused by an attempt (using sed) to escape leading whitespace in a postscript fragment for insertion by a sed filter; it actually inserts a backslash at the start of every line.  It's this which causes the final sed filter invocation to see \countdictstack, \c for control, control-O, resulting in ^Ountdictstack.

Fix is to only escape a leading space with a backslash, instead of inserting a backslash at the start of every line.

--- t   2006-03-16 12:30:48.000000000 +0100
+++ /usr/bin/psset      2006-03-16 12:28:14.000000000 +0100
@@ -241,7 +241,7 @@
 # spaces with a `\' too...
 pspagedevicelen=`echo "$pspagedevice" | wc -l`
 pspagedevice=`echo "$pspagedevice" | \
- sed -e "$pspagedevicelen!s/\$/\\\\\\/;s/^/\\\\\\/"`
+ sed -e "$pspagedevicelen!s/\$/\\\\\\/;s/^ /\\\\\\/"`
 
 case $at in
   0) # Insert last in the Setup, so that we win over other requests.

[Comment 1 Stefan Schweizer (RETIRED) 2006-06-01 16:31:42 UTC]

thanks, I added your patch to a2ps-4.13c-r5.ebuild