1 files changed, 30 insertions, 0 deletions
diff --git a/t/t4028-format-patch-mime-headers.sh b/t/t4028-format-patch-mime-headers.sh
new file mode 100755
index 000000000000..204ba673cb58
--- /dev/null
+++ b/t/t4028-format-patch-mime-headers.sh
@@ -0,0 +1,30 @@
+#!/bin/sh
+
+test_description='format-patch mime headers and extra headers do not conflict'
+. ./test-lib.sh
+
+test_expect_success 'create commit with utf-8 body' '
+	echo content >file &&
+	git add file &&
+	git commit -m one &&
+	echo more >>file &&
+	git commit -a -m "two
+
+	utf-8 body: ñ"
+'
+
+test_expect_success 'patch has mime headers' '
+	rm -f 0001-two.patch &&
+	git format-patch HEAD^ &&
+	grep -i "content-type: text/plain; charset=utf-8" 0001-two.patch
+'
+
+test_expect_success 'patch has mime and extra headers' '
+	rm -f 0001-two.patch &&
+	git config format.headers "x-foo: bar" &&
+	git format-patch HEAD^ &&
+	grep -i "x-foo: bar" 0001-two.patch &&
+	grep -i "content-type: text/plain; charset=utf-8" 0001-two.patch
+'
+
+test_done