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