explicit master_dir as part of header -- still required (for Cygwin) since Scala layer does not pass file content yet;
#!/usr/bin/env bash
#
# Author: Makarius
#
# DESCRIPTION: invoke Java within the Isabelle environment
CLASSPATH="$(jvmpath "$CLASSPATH")"
JAVA_EXE="${THIS_JAVA:-$ISABELLE_JAVA}"
if "$JAVA_EXE" -server >/dev/null 2>/dev/null; then
SERVER="-server"
else
SERVER=""
fi
exec "$JAVA_EXE" -Dfile.encoding=UTF-8 $SERVER \
"-Djava.ext.dirs=$("$ISABELLE_HOME/lib/scripts/java_ext_dirs")" "$@"