merged with mainline

tests/grub_script_blanklines.in

@@ -0,0 +1,14 @@
+#! /bin/sh -e
+
+@builddir@/grub-script-check <<EOF
+# comment 1
+
+command1 arg1
+
+command2 arg2
+
+
+
+last command
+# comment 2
+EOF

tests/grub_script_for1.in

@@ -0,0 +1,27 @@
+#! @builddir@/grub-shell-tester
+
+for x in one two 'three 3' "four 4" five six-6; do echo $x; done
+
+for x in one two 'three 3' "four 4" five six-6
+do
+	echo $x
+done
+
+foo="1 2"
+for x in ab${foo}cd; do echo $x; done
+for x in "ab${foo}cd"; do echo $x; done
+
+a="one two three"
+y=foo
+echo $y
+for y in $a; do
+    echo $y
+done
+echo $y
+
+
+b="one two three"
+for z in $b; do
+    echo $z
+done
+echo $z