add support for announces that were sent to multiple mailing lists..

sed part:
Submitted-by: Nick Hibma

snapaid.sh

@@ -124,17 +124,21 @@ get_raw() {
 		# get the location, it's a database lookup
 		loc=$($WGET --max-redirect=0 --method=HEAD -S -o - -O - 'https://docs.freebsd.org/cgi/mid.cgi?'"$mid" 2>/dev/null | awk 'tolower($1) == "location:" { print $2; exit }')
 
-		# Some emails are sent to both -current and -snapshot,
-		# we can't handle them for now
-		# such as 20160529215940.GA11785@FreeBSD.org
 		if [ x"$loc" = x"" ]; then
-			return 1
+			# Some emails are sent to both -current and -snapshot,
+			# such as 20160529215940.GA11785@FreeBSD.org
+			# try w/ some magic sed
+			loc=$($WGET -O - 'https://docs.freebsd.org/cgi/mid.cgi?'"$mid" 2>/dev/null |
+			    sed -Ee '/.*(getmsg.cgi?[^"]*).*/!d;s//\/cgi\/\1/' | head -1)
 		fi
 
-		# if it's relative, add https
+		# if it's host relative, add https
 		if [ x"$loc" != x"${loc#//}" ]; then
 			# add https
 			loc="https:$loc"
+		elif [ x"$loc" != x"${loc#/[^/]}" ]; then
+			# add https+host
+			loc="https://docs.freebsd.org$loc"
 		fi
 
 		# get the raw part