Merge branch 'cl/t9001-cleanup' into maint

Test clean-up.

* cl/t9001-cleanup:
  t9001: use existing helper in send-email test

t/t9001-send-email.sh

@@ -6,6 +6,12 @@ test_description='git send-email'
 # May be altered later in the test
 PREREQ="PERL"
 
+replace_variable_fields () {
+	sed	-e "s/^\(Date:\).*/\1 DATE-STRING/" \
+		-e "s/^\(Message-Id:\).*/\1 MESSAGE-ID-STRING/" \
+		-e "s/^\(X-Mailer:\).*/\1 X-MAILER-STRING/"
+}
+
 test_expect_success $PREREQ 'prepare reference tree' '
 	echo "1A quick brown fox jumps over the" >file &&
 	echo "lazy dog" >>file &&
@@ -296,10 +302,7 @@ test_expect_success $PREREQ 'Show all headers' '
 		--bcc=bcc@example.com \
 		--in-reply-to="<unique-message-id@example.com>" \
 		--smtp-server relay.example.com \
-		$patches |
+		$patches | replace_variable_fields \
-	sed	-e "s/^\(Date:\).*/\1 DATE-STRING/" \
-		-e "s/^\(Message-Id:\).*/\1 MESSAGE-ID-STRING/" \
-		-e "s/^\(X-Mailer:\).*/\1 X-MAILER-STRING/" \
 		>actual-show-all-headers &&
 	test_cmp expected-show-all-headers actual-show-all-headers
 '
@@ -554,12 +557,6 @@ Result: OK
 EOF
 "
 
-replace_variable_fields () {
-	sed	-e "s/^\(Date:\).*/\1 DATE-STRING/" \
-		-e "s/^\(Message-Id:\).*/\1 MESSAGE-ID-STRING/" \
-		-e "s/^\(X-Mailer:\).*/\1 X-MAILER-STRING/"
-}
-
 test_suppression () {
 	git send-email \
 		--dry-run \