grep "file => foo .* 0 *$" 0000-cover-letter.patch
'
+
+cat > expect << EOF
+ This is an excessively long subject line for a message due to the
+ habit some projects have of not having a short, one-line subject at
+ the start of the commit message, but rather sticking a whole
+ paragraph right at the start as the only thing in the commit
+ message. It had better not become the filename for the patch.
+ foo
+
+EOF
+
+test_expect_success 'shortlog of cover-letter wraps overly-long onelines' '
+
+ git format-patch --cover-letter -2 &&
+ sed -e "1,/A U Thor/d" -e "/^$/q" < 0000-cover-letter.patch > output &&
+ git diff expect output
+
+'
+
test_done