Re: [PATCH v5 2/2] send-email: expose header information to git-send-email's sendemail-validate hook

"Strawbridge, Michael" [off-list ref] writes:

+test_expect_success $PREREQ "--validate hook supports header argument" '
+	test_when_finished "rm my-hooks.ran" &&
+	write_script my-hooks/sendemail-validate <<-\EOF &&
+	filesize=$(stat -c%s "$2")

That "stat -c" is a GNU-ism, I think.  macOS CI jobs at GitHub do
not seem to like it.

+	if [ "$filesize" != "0" ]; then

Also, please see Documentation/CodingGuidelines to learn the subset
of shell script syntax and style we adopted for this project.

Thanks.