--- geogebra.orig	Fri Oct  4 16:11:17 2013
+++ geogebra	Fri Dec 20 08:55:47 2013
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 #---------------------------------------------
 # Script to start GeoGebra
 #---------------------------------------------
@@ -9,7 +9,7 @@
 # GG_SCRIPTNAME=<name of originally called script to start GeoGebra> # If unset, name of this script will be used.
 #
 # GG_PATH=<path of directory containing geogebra.jar> # If unset, path of this script will be used.
-# In this case if the path of script does not contain the geogebra.jar file, /usr/share/geogebra will be used.
+# In this case if the path of script does not contain the geogebra.jar file, ${TRUEPREFIX}/share/geogebra will be used.
 #
 # GG_SYS_CONFIG_PATH=<path of system directory containing geogebra.conf>
 #
@@ -19,7 +19,7 @@
 #
 # GG_XMS=<initial Java heap size> # If unset, 32m will be used.
 #
-# GG_XMX=<maximum Java heap size> # If unset, 1024m will be used.
+# GG_XMX=<maximum Java heap size> # If unset, 256m will be used.
 #
 # GG_DJAVA_LIBRARY_PATH=<native library path>
 #
@@ -45,19 +45,7 @@ fi
 #---------------------------------------------
 # If $GG_PATH not set, use path of this script.
 
-if [ -z "$GG_PATH" ]; then
-	GG_PATH="${BASH_SOURCE[0]}"
-	if [ -h "${GG_PATH}" ]; then
-		while [ -h "${GG_PATH}" ]; do
-			GG_PATH=`readlink "${GG_PATH}"`
-		done
-	fi
-	pushd . > /dev/null
-	cd `dirname ${GG_PATH}` > /dev/null
-	GG_PATH=`pwd`
-	popd > /dev/null
-	test -r "${GG_PATH}/geogebra_main.jar" || GG_PATH='/usr/share/geogebra'
-fi
+GG_PATH='${TRUEPREFIX}/share/geogebra'
 
 #---------------------------------------------
 # If $GG_CONFIG_PATH not set, use $HOME.
@@ -70,7 +58,7 @@ fi
 # If $JAVACMD not set, use java.
 
 if [ -z "$JAVACMD" ]; then
-	JAVACMD='java'
+	JAVACMD=`javaPathHelper -c geogebra`
 fi
 
 #---------------------------------------------
@@ -81,10 +69,10 @@ if [ -z "$GG_XMS" ]; then
 fi
 
 #---------------------------------------------
-# If $GG_XMX not set, use 1024m.
+# If $GG_XMX not set, use 256m.
 
 if [ -z "$GG_XMX" ]; then
-	GG_XMX='1024m'
+	GG_XMX='256m'
 fi
 
 #---------------------------------------------
@@ -193,7 +181,7 @@ if [ -w "$GG_CONFIG_FILE" ]; then
 #
 `if [ ! -n "$DEFAULT_GG_XMS" ]; then echo "#DEFAULT_GG_XMS='$GG_XMS'"; else echo "DEFAULT_GG_XMS='$DEFAULT_GG_XMS'"; fi`
 
-# Set maximum Java heap size, e.g '512m'.
+# Set maximum Java heap size, e.g '256m'.
 #
 `if [ ! -n "$DEFAULT_GG_XMX" ]; then echo "#DEFAULT_GG_XMX='$GG_XMX'"; else echo "DEFAULT_GG_XMX='$DEFAULT_GG_XMX'"; fi`
 
@@ -282,7 +270,7 @@ fi
 #---------------------------------------------
 # Define usage function.
 
-function func_usage()
+func_usage()
 {
 	cat << _USAGE
 Usage: $GG_SCRIPTNAME [Java-options] [GeoGebra-options] [FILE]
@@ -324,48 +312,48 @@ _USAGE
 #---------------------------------------------
 # Check for option --help and pass Java options to Java, others to GeoGebra.
 
-GG_OPTS=()
+GG_OPTS=""
 for i in "$@"; do
 	case "$i" in
 	--help | --hel | --he | --h )
 		func_usage; exit 0 ;;
 	esac
-	if [ $(expr match "$i" '.*--') -ne 0 ]; then
-		if [ $(expr match "$i" '.*--showSplash=') -ne 0 ]; then
+	if [ $(expr -- "$i" : '.*--') -ne 0 ]; then
+		if [ $(expr -- "$i" : '.*--showSplash=') -ne 0 ]; then
 			GG_SHOWSPLASH=${i:13}
 			shift $((1))
-		elif [ $(expr match "$i" '.*--enableUndo=') -ne 0 ]; then
+		elif [ $(expr -- "$i" : '.*--enableUndo=') -ne 0 ]; then
 			GG_ENABLEUNDO=${i:13}
 			shift $((1))
-		elif [ $(expr match "$i" '.*--antiAliasing=') -ne 0 ]; then
+		elif [ $(expr -- "$i" : '.*--antiAliasing=') -ne 0 ]; then
 			GG_ANTIALIASING=${i:15}
 			shift $((1))
-		elif [ $(expr match "$i" '.*--versionCheckAllow=') -ne 0 ]; then
+		elif [ $(expr -- "$i" : '.*--versionCheckAllow=') -ne 0 ]; then
 			GG_VERSIONCHECKALLOW=${i:20}
 			shift $((1))
-		elif [ $(expr match "$i" '.*--settingsfile=') -ne 0 ]; then
+		elif [ $(expr -- "$i" : '.*--settingsfile=') -ne 0 ]; then
 			GG_SETTINGS_FILE=${i:15}
 			shift $((1))
 		else
 			GG_OPTS[${#GG_OPTS[*]}]="$i"
 			shift $((1))
 		fi
-	elif [ $(expr match "$i" '.*-Xms') -ne 0 ]; then
+	elif [ $(expr -- "$i" : '.*-Xms') -ne 0 ]; then
 		GG_XMS=${i:4}
 		shift $((1))
-	elif [ $(expr match "$i" '.*-Xmx') -ne 0 ]; then
+	elif [ $(expr -- "$i" : '.*-Xmx') -ne 0 ]; then
 		GG_XMX=${i:4}
 		shift $((1))
-	elif [ $(expr match "$i" '.*-Djava.library.path=') -ne 0 ]; then
+	elif [ $(expr -- "$i" : '.*-Djava.library.path=') -ne 0 ]; then
 		GG_DJAVA_LIBRARY_PATH=${i:20}
 		shift $((1))
-	elif [ $(expr match "$i" '.*-Dsun.java2d.xrender=') -ne 0 ]; then
+	elif [ $(expr -- "$i" : '.*-Dsun.java2d.xrender=') -ne 0 ]; then
 		GG_DSUN_JAVA2D_XRENDER=${i:21}
 		shift $((1))
-	elif [ $(expr match "$i" '.*-Dsun.java2d.opengl=') -ne 0 ]; then
+	elif [ $(expr -- "$i" : '.*-Dsun.java2d.opengl=') -ne 0 ]; then
 		GG_DSUN_JAVA2D_OPENGL=${i:20}
 		shift $((1))
-	elif [ $(expr match "$i" '.*-JavaCMD=') -ne 0 ]; then
+	elif [ $(expr -- "$i" : '.*-JavaCMD=') -ne 0 ]; then
 		JAVACMD=${i:9}
 		shift $((1))
 	fi
@@ -381,9 +369,9 @@ if [ -n "$GG_VERSIONCHECKALLOW" ]; then
 	GG_OPTS[${#GG_OPTS[*]}]="--versionCheckAllow=$GG_VERSIONCHECKALLOW"
 fi
 GG_OPTS[${#GG_OPTS[*]}]="--settingsfile=$GG_SETTINGS_FILE"
-JAVA_OPTS=("-Xms$GG_XMS" "-Xmx$GG_XMX")
+JAVA_OPTS="-Xms$GG_XMS -Xmx$GG_XMX"
 if [ -n "$GG_DJAVA_LIBRARY_PATH" ]; then
-	JAVA_OPTS[${#JAVA_OPTS[*]}]="-Djava.library.path=$GG_DJAVA_LIBRARY_PATH"
+	JAVA_OPTS="-Djava.library.path=$GG_DJAVA_LIBRARY_PATH"
 fi
 if [ -n "$GG_DSUN_JAVA2D_XRENDER" ]; then
 	JAVA_OPTS[${#JAVA_OPTS[*]}]="-Dsun.java2d.xrender=$GG_DSUN_JAVA2D_XRENDER"
@@ -395,4 +383,4 @@ fi
 #---------------------------------------------
 # Run
 
-exec "$JAVACMD" "${JAVA_OPTS[@]}" -jar "$GG_PATH/geogebra.jar" "${GG_OPTS[@]}" "$@"
+exec $JAVACMD ${JAVA_OPTS[@]} -jar $GG_PATH/geogebra.jar ${GG_OPTS[@]} $@