lib/Tools/scalac

more robust classpath: skip empty entries;

#!/usr/bin/env bash
#
# Author: Makarius
#
# DESCRIPTION: invoke Scala compiler within the Isabelle environment

isabelle_admin_build jars || exit $?

classpath "$ISABELLE_SETUP_CLASSPATH"; unset ISABELLE_SETUP_CLASSPATH
classpath "$CLASSPATH"; unset CLASSPATH

isabelle_scala scalac -Dfile.encoding=UTF-8 \
  -classpath "$(platform_path "$ISABELLE_CLASSPATH")" "$@"