some shell expansion features into grub-script

tests/grub_script_expansion.in

@@ -0,0 +1,35 @@
+#! /bin/bash -e
+
+# Run GRUB script in a Qemu instance
+# Copyright (C) 2010  Free Software Foundation, Inc.
+#
+# GRUB is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# GRUB is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+
+disks=`echo ls | @builddir@/grub-shell`
+other=`echo echo '*' | @builddir@/grub-shell`
+for d in $disks; do
+  if ! echo "$other" | grep "$d" >/dev/null; then
+    echo "$d missing from * expansion" >&2
+    exit 1
+  fi
+done
+
+other=`echo echo '(*)' | @builddir@/grub-shell`
+for d in $disks; do
+  if ! echo "$other" | grep "$d" >/dev/null; then
+    echo "$d missing from (*) expansion" >&2
+    exit 1
+  fi
+done
+

tests/util/grub-shell.in

@@ -95,7 +95,7 @@ done
 if [ "x${source}" = x ] ; then
     tmpfile=`mktemp`
     while read; do
-	echo $REPLY >> ${tmpfile}
+	echo "$REPLY" >> ${tmpfile}
     done
     source=${tmpfile}
 fi