proper support for "isabelle update -D DIR": avoid accidental exclusion of select_dirs (amending e5dafe9e120f);
#!/usr/bin/env bash
#
# DESCRIPTION: build full Isabelle distribution from repository
unset CDPATH
THIS="$(cd "$(dirname "$0")"; pwd)"
"$THIS/../bin/isabelle" scala_build -q || exit $?
"$THIS/../bin/isabelle_java" isabelle.Build_Release "$@"