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.
