mailinfo and git-am: allow "John Doe <johndoe>"

An isolated developer could have a local-only e-mail, which will
be stripped out by mailinfo because it lacks '@'.  Define a
fallback parser to accomodate that.

At the same time, reject authorless patch in git-am.

Signed-off-by: Junio C Hamano <junkio@cox.net>

1 files changed, 7 insertions, 0 deletions

diff --git a/git-am.sh b/git-am.sh
index 343bee9d8..1a114bcc0 100755
--- a/git-am.sh
+++ b/git-am.sh
@@ -249,6 +249,13 @@ do
 	GIT_AUTHOR_NAME="$(sed -n '/^Author/ s/Author: //p' "$dotest/info")"
 	GIT_AUTHOR_EMAIL="$(sed -n '/^Email/ s/Email: //p' "$dotest/info")"
 	GIT_AUTHOR_DATE="$(sed -n '/^Date/ s/Date: //p' "$dotest/info")"
+
+	if test -z "$GIT_AUTHOR_EMAIL"
+	then
+		echo "Patch does not have a valid e-mail address."
+		stop_here $this
+	fi
+
 	export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
 
 	SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' "$dotest/info")"