mailinfo: tests for RFC2047 examples

Also as suggested by Junio, in order to try to catch other MIME
problems, test cases from the "8. Examples" section of RFC2047 are added
to t5100 testsuite as well.
Signed-off-by: NKirill Smelkov <kirr@landau.phys.spbu.ru>

t/t5100-mailinfo.sh

@@ -25,6 +25,28 @@ do
 		diff ../t5100/info$mail info$mail"
 done
 
+
+test_expect_success 'split box with rfc2047 samples' \
+	'mkdir rfc2047 &&
+	git mailsplit -orfc2047 "$TEST_DIRECTORY"/t5100/rfc2047-samples.mbox \
+	  >rfc2047/last &&
+	last=`cat rfc2047/last` &&
+	echo total is $last &&
+	test `cat rfc2047/last` = 11'
+
+for mail in `echo rfc2047/00*`
+do
+	test_expect_success "mailinfo $mail" '
+		git mailinfo -u $mail-msg $mail-patch <$mail >$mail-info &&
+		echo msg &&
+		test_cmp "$TEST_DIRECTORY"/t5100/empty $mail-msg &&
+		echo patch &&
+		test_cmp "$TEST_DIRECTORY"/t5100/empty $mail-patch &&
+		echo info &&
+		test_cmp "$TEST_DIRECTORY"/t5100/rfc2047-info-$(basename $mail) $mail-info
+	'
+done
+
 test_expect_success 'respect NULs' '
 
 	git mailsplit -d3 -o. ../t5100/nul-plain &&

t/t5100/rfc2047-info-0001

+Author: Keith Moore
+Email: moore@cs.utk.edu
+Subject: If you can read this you understand the example.
+

t/t5100/rfc2047-info-0002

+Author: Olle Järnefors
+Email: ojarnef@admin.kth.se
+Subject: Time for ISO 10646?
+

t/t5100/rfc2047-info-0003

+Author: Patrik Fältström
+Email: paf@nada.kth.se
+Subject: RFC-HDR care and feeding
+

t/t5100/rfc2047-info-0004

+Author: Nathaniel Borenstein   (םולש ןב ילטפנ)
+Email: nsb@thumper.bellcore.com
+Subject: Test of new header generator
+

t/t5100/rfc2047-info-0005

+Subject: (a)
+

t/t5100/rfc2047-info-0006

+Subject: (a b)
+

t/t5100/rfc2047-info-0007

+Subject: (ab)
+

t/t5100/rfc2047-info-0008

+Subject: (ab)
+

t/t5100/rfc2047-info-0009

+Subject: (ab)
+

t/t5100/rfc2047-info-0010

+Subject: (a b)
+

t/t5100/rfc2047-info-0011

+Subject: (a b)
+

t/t5100/rfc2047-samples.mbox

+From nobody Mon Sep 17 00:00:00 2001
+From: =?US-ASCII?Q?Keith_Moore?= <moore@cs.utk.edu>
+To: =?ISO-8859-1?Q?Keld_J=F8rn_Simonsen?= <keld@dkuug.dk>
+CC: =?ISO-8859-1?Q?Andr=E9?= Pirard <PIRARD@vm1.ulg.ac.be>
+Subject: =?ISO-8859-1?B?SWYgeW91IGNhbiByZWFkIHRoaXMgeW8=?=
+ =?ISO-8859-2?B?dSB1bmRlcnN0YW5kIHRoZSBleGFtcGxlLg==?=
+
+From nobody Mon Sep 17 00:00:00 2001
+From: =?ISO-8859-1?Q?Olle_J=E4rnefors?= <ojarnef@admin.kth.se>
+To: ietf-822@dimacs.rutgers.edu, ojarnef@admin.kth.se
+Subject: Time for ISO 10646?
+
+From nobody Mon Sep 17 00:00:00 2001
+To: Dave Crocker <dcrocker@mordor.stanford.edu>
+Cc: ietf-822@dimacs.rutgers.edu, paf@comsol.se
+From: =?ISO-8859-1?Q?Patrik_F=E4ltstr=F6m?= <paf@nada.kth.se>
+Subject: Re: RFC-HDR care and feeding
+
+From nobody Mon Sep 17 00:00:00 2001
+From: Nathaniel Borenstein <nsb@thumper.bellcore.com>
+      (=?iso-8859-8?b?7eXs+SDv4SDp7Oj08A==?=)
+To: Greg Vaudreuil <gvaudre@NRI.Reston.VA.US>, Ned Freed
+   <ned@innosoft.com>, Keith Moore <moore@cs.utk.edu>
+Subject: Test of new header generator
+MIME-Version: 1.0
+Content-type: text/plain; charset=ISO-8859-1
+
+From nobody Mon Sep 17 00:00:00 2001
+Subject: (=?ISO-8859-1?Q?a?=)
+
+From nobody Mon Sep 17 00:00:00 2001
+Subject: (=?ISO-8859-1?Q?a?= b)
+
+From nobody Mon Sep 17 00:00:00 2001
+Subject: (=?ISO-8859-1?Q?a?= =?ISO-8859-1?Q?b?=)
+
+From nobody Mon Sep 17 00:00:00 2001
+Subject: (=?ISO-8859-1?Q?a?=  =?ISO-8859-1?Q?b?=)
+
+From nobody Mon Sep 17 00:00:00 2001
+Subject: (=?ISO-8859-1?Q?a?=
+    =?ISO-8859-1?Q?b?=)
+
+From nobody Mon Sep 17 00:00:00 2001
+Subject: (=?ISO-8859-1?Q?a_b?=)
+
+From nobody Mon Sep 17 00:00:00 2001
+Subject: (=?ISO-8859-1?Q?a?= =?ISO-8859-2?Q?_b?=)