[PATCH] tests: Deduplicate code in send-email test

[Christian Ludwig <chrissicool@googlemail.com>]

Use the wrapper function around the sed statement like everywhere else
in the test. Unfortunately the wrapper function is defined pretty late.

Move the wrapper to the top of the test file, so future users have it
available right away.

Signed-off-by: Christian Ludwig <chrissicool@gmail.com>
---
 t/t9001-send-email.sh | 17 +++++++----------
 1 file changed, 7 insertions(+), 10 deletions(-)

diff --git a/t/t9001-send-email.sh b/t/t9001-send-email.sh
index 4d261c2a9..81869d891 100755
--- a/t/t9001-send-email.sh
+++ b/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 |
-	sed	-e "s/^\(Date:\).*/\1 DATE-STRING/" \
-		-e "s/^\(Message-Id:\).*/\1 MESSAGE-ID-STRING/" \
-		-e "s/^\(X-Mailer:\).*/\1 X-MAILER-STRING/" \
+		$patches | replace_variable_fields \
 		>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 \
-- 
2.15.1