lib/Tools/emacs

--- a/lib/Tools/emacs	Tue Jan 05 16:51:01 2010 +0100
+++ b/lib/Tools/emacs	Tue Jan 05 16:55:00 2010 +0100
@@ -21,4 +21,8 @@
 INTERFACE="$PROOFGENERAL_HOME/isar/interface"
 [ ! -x "$INTERFACE" ] && fail "Bad interface script: \"$INTERFACE\""
 
+#legacy settings
+export ISABELLE="$ISABELLE_PROCESS"
+export ISATOOL="$ISABELLE_TOOL"
+
 exec "$INTERFACE" "$@"