src/Tools/jEdit/lib/Tools/jedit

   echo "Usage: isabelle $PRG [OPTIONS] [FILES ...]"
   echo
   echo "  Options are:"
   echo "    -D NAME=X    set JVM system property"
   echo "    -J OPTION    add JVM runtime option (default $JEDIT_JAVA_SYSTEM_OPTIONS $JEDIT_JAVA_OPTIONS)"
+  echo "    -R           open ROOT entry of logic session and use its parent"
   echo "    -b           build only"
   echo "    -d DIR       include session directory"
   echo "    -f           fresh build"
   echo "    -j OPTION    add jEdit runtime option"
   echo "                 (default JEDIT_OPTIONS=$JEDIT_OPTIONS)"

 
 BUILD_ONLY=false
 BUILD_JARS="jars"
 ML_PROCESS_POLICY=""
 JEDIT_SESSION_DIRS=""
+JEDIT_LOGIC_ROOT=""
 JEDIT_LOGIC=""
 JEDIT_PRINT_MODE=""
 JEDIT_BUILD_MODE="normal"
 
 function getoptions()
 {
   OPTIND=1
-  while getopts "D:J:bd:fj:l:m:np:s" OPT
+  while getopts "D:J:Rbd:fj:l:m:np:s" OPT
   do
     case "$OPT" in
       D)
         JAVA_ARGS["${#JAVA_ARGS[@]}"]="-D$OPTARG"
         ;;
       J)
         JAVA_ARGS["${#JAVA_ARGS[@]}"]="$OPTARG"
+        ;;
+      R)
+        JEDIT_LOGIC_ROOT="true"
         ;;
       b)
         BUILD_ONLY=true
         ;;
       d)

 
 ## main
 
 if [ "$BUILD_ONLY" = false ]
 then
-  export JEDIT_SESSION_DIRS JEDIT_LOGIC JEDIT_PRINT_MODE JEDIT_BUILD_MODE
+  export JEDIT_SESSION_DIRS JEDIT_LOGIC JEDIT_LOGIC_ROOT JEDIT_PRINT_MODE JEDIT_BUILD_MODE
   export JEDIT_ML_PROCESS_POLICY="$ML_PROCESS_POLICY"
   classpath "$JEDIT_HOME/dist/jedit.jar"
   exec isabelle java "${JAVA_ARGS[@]}" isabelle.Main "${ARGS[@]}"
 fi