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Bug#529371: Regression: compiz-manager wrapper script modifies special ENV environment variable



Package: compiz-core
Version: 0.8.2-1
Severity: normal
Tags: patch

Version 0.8.2-1 reverted the fix for bug #484225.  See
<http://git.debian.org/?p=pkg-xorg/app/compiz.git;a=commitdiff;h=c3ee16e2cd783829f0b0b104bc32430cf7da51c5>
for the offending commitdiff.  Attached is a patch to fix this
regression.

Description of the problem:  The Compiz Manager script
(debian/compiz-manager in the source, installed at /usr/bin/compiz)
modifies the ENV environment variable, which interferes with
interactive POSIX shells (/bin/sh).

For more details on the standard meaning of the ENV environment
variable, see the POSIX specifications at:
  <http://www.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html>
  <http://www.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_05_03>
  <http://www.opengroup.org/onlinepubs/9699919799/utilities/sh.html#tag_20_117_08>

Upstream bug:  <http://bugs.opencompositing.org/show_bug.cgi?id=997>
--- old/debian/compiz-manager	2009-05-18 18:29:12.000000000 -0400
+++ new/debian/compiz-manager	2009-05-18 18:31:55.000000000 -0400
@@ -71,7 +71,6 @@
 
 COMPIZ_OPTIONS="--ignore-desktop-hints --replace"
 COMPIZ_PLUGINS=""
-ENV=""
 
 # Use emerald by default if it exist
 USE_EMERALD="yes"
@@ -290,27 +289,23 @@
 build_env()
 {
 	if check_nvidia; then
-		ENV="__GL_YIELD=NOTHING "
+		export __GL_YIELD=NOTHING
 	fi
 	if [ "$INDIRECT" = "yes" ]; then
-		ENV="$ENV LIBGL_ALWAYS_INDIRECT=1 "
+		export LIBGL_ALWAYS_INDIRECT=1
 	fi
 	if check_xgl; then
 		if [ -f ${LIBGL_NVIDIA} ]; then
-			ENV="$ENV LD_PRELOAD=${LIBGL_NVIDIA}"
+			export LD_PRELOAD="${LD_PRELOAD:+${LD_PRELOAD} }${LIBGL_NVIDIA}"
 			verbose "Enabling Xgl with nVidia drivers...\n"
 		fi
 		if [ -f ${LIBGL_FGLRX} ]; then
-			ENV="$ENV LD_PRELOAD=${LIBGL_FGLRX}"
+			export LD_PRELOAD="${LD_PRELOAD:+${LD_PRELOAD} }${LIBGL_FGLRX}"
 			verbose "Enabling Xgl with fglrx ATi drivers...\n"
 		fi
 	fi
 
-	ENV="$ENV FROM_WRAPPER=yes"
-
-	if [ -n "$ENV" ]; then
-		export $ENV
-	fi
+	export FROM_WRAPPER=yes
 }
 
 build_args()

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