lib/Tools/scala

more explicit error message;
convert/revert range;
tuned;

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

[ -z "$SCALA_HOME" ] && { echo "Unknown SCALA_HOME -- Scala unavailable"; exit 2; }

[ -e "$ISABELLE_HOME/Admin/build" ] && { "$ISABELLE_HOME/Admin/build" jars || exit $?; }

CLASSPATH="$(jvmpath "$CLASSPATH")"
exec "$SCALA_HOME/bin/scala" -Dfile.encoding=UTF-8 "$@"