test_cmp expect subject
'
+M8="foo_bar_"
+M64=$M8$M8$M8$M8$M8$M8$M8$M8
+cat >expect <<EOF
+From: $M64
+ <foobar@foo.bar>
+EOF
+test_expect_success 'format-patch wraps non-quotable headers' '
+ rm -rf patches/ &&
+ echo content >>file &&
+ git add file &&
+ git commit -mfoo --author "$M64 <foobar@foo.bar>" &&
+ git format-patch --stdout -1 >patch &&
+ sed -n "/^From: /p; /^ /p; /^$/q" <patch >from &&
+ test_cmp expect from
+'
test_done