t: add test case for latest magrep crash

This crash was reported in #76 and resolved with
commit 6239ef35357824308df079bd6df0dc4b202e898.

t/3000-magrep.t

@@ -1,7 +1,7 @@
 #!/bin/sh -e
 cd ${0%/*}
 . ./lib.sh
-plan 9
+plan 10
 
 rm -rf test.dir
 mkdir test.dir
@@ -38,10 +38,136 @@ Message-Id: <EOH1F3NUOY.2KBVMHSBFATNY@example.org>
 
 !
 
+cat <<! | mmime >"inbox/cur/4:2,"
+To: "John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>,
+	"John Doe" <example@example.com>
+!
+
 cat <<! >seq
 inbox/cur/1:2,
 inbox/cur/2:2,
 inbox/cur/3:2,
+inbox/cur/4:2,
 !
 
 export MAILSEQ=seq
@@ -51,6 +177,7 @@ check_test 'ignorecase' -eq 1 'magrep -i subject:NICE | wc -l'
 check_test 'invert' -eq 2 'magrep -v subject:nice | wc -l'
 check_test 'max matches' -eq 2 'magrep -m 2 from:Piet | wc -l'
 check_test 'long subject' -eq 1 'magrep subject:aliqua | wc -l'
+check_test 'decode large rfc2047 header' -eq 1 'magrep -d to:John | wc -l'
 
 echo 'inbox/cur/1:2,: subject: wow nice subject' >expect
 check_same 'print' 'magrep -p subject:nice' 'cat expect'