+if [ -n "$1" ] ; then
+ for patch in "$@" ; do
+ # Subject can be on 2 lines
+ subject=$(sed '/^Subject: */!d;s///;N;s,\n[[:space:]]\+, ,;s,\n.*,,;q' "$patch")
+ check "$patch" '' "$subject"
+ done
+elif [ ! -t 0 ] ; then # stdin
+ subject=$(while read header value ; do
+ if [ "$header" = 'Subject:' ] ; then
+ IFS= read next
+ continuation=$(echo "$next" | sed -n 's,^[[:space:]]\+, ,p')
+ echo $value$continuation
+ break
+ fi
+ done)
+ check '' '' "$subject"
+else