mail: add tests in a non-interactive mode

* configure.ac: Configure mail/tests subdirectory.
* mail/Makefile.am (SUBDIRS): Add tests.
* mail/tests/testsuite.at: New file.
* mail/tests/Makefile.am: New file.
* mail/tests/.gitignore: New file.
* mail/tests/atlocal.in: New file.
* mail/tests/cols00.at: New file.
* mail/tests/cols01.at: New file.
* mail/tests/copy00.at: New file.
* mail/tests/nohome.at: New file.
* mail/tests/version.at: New file.

@@ -1316,6 +1316,7 @@ AC_CONFIG_TESTDIR(testsuite)
 AC_CONFIG_TESTDIR(libmu_compat/tests)
 AC_CONFIG_TESTDIR(frm/tests)
 AC_CONFIG_TESTDIR(maidag/tests)
+AC_CONFIG_TESTDIR(mail/tests)
 AC_CONFIG_TESTDIR(messages/tests)
 AC_CONFIG_TESTDIR(readmsg/tests)
 AC_CONFIG_TESTDIR(sieve/tests)
@@ -1337,6 +1338,8 @@ AC_CONFIG_FILES([libmailutils/tests/Makefile
                  imap4d/tests/atlocal
 		 maidag/tests/Makefile
 		 maidag/tests/atlocal
+		 mail/tests/Makefile
+		 mail/tests/atlocal
 		 messages/tests/Makefile
 		 messages/tests/atlocal
 		 readmsg/tests/Makefile

@@ -100,5 +100,5 @@ mail_SOURCES = \
  write.c\
  z.c
 
-SUBDIRS = testsuite
+SUBDIRS = testsuite tests
 

+atconfig
+atlocal
+package.m4
+testsuite
+testsuite.dir
+testsuite.log

+# This file is part of GNU Mailutils.
+# Copyright (C) 2007-2012, 2014-2015 Free Software Foundation, Inc.
+#
+# GNU Mailutils is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3, or (at
+# your option) any later version.
+#
+# GNU Mailutils is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Mailutils.  If not, see <http://www.gnu.org/licenses/>.
+
+EXTRA_DIST = $(TESTSUITE_AT) testsuite package.m4 
+DISTCLEANFILES       = atconfig $(check_SCRIPTS)
+MAINTAINERCLEANFILES = Makefile.in $(TESTSUITE)
+
+## ------------ ##
+## package.m4.  ##
+## ------------ ##
+
+$(srcdir)/package.m4: $(top_srcdir)/configure.ac
+	$(AM_V_GEN){                                      \
+	  echo '# Signature of the current package.'; \
+	  echo 'm4_define([AT_PACKAGE_NAME],      [@PACKAGE_NAME@])'; \
+	  echo 'm4_define([AT_PACKAGE_TARNAME],   [@PACKAGE_TARNAME@])'; \
+	  echo 'm4_define([AT_PACKAGE_VERSION],   [@PACKAGE_VERSION@])'; \
+	  echo 'm4_define([AT_PACKAGE_STRING],    [@PACKAGE_STRING@])'; \
+	  echo 'm4_define([AT_PACKAGE_BUGREPORT], [@PACKAGE_BUGREPORT@])'; \
+	} >$(srcdir)/package.m4
+
+#
+
+## ------------ ##
+## Test suite.  ##
+## ------------ ##
+
+TESTSUITE_AT =\
+ cols00.at\
+ cols01.at\
+ copy00.at\
+ nohome.at\
+ testsuite.at\
+ version.at
+
+TESTSUITE = $(srcdir)/testsuite
+M4=m4
+
+AUTOTEST = $(AUTOM4TE) --language=autotest
+$(TESTSUITE): package.m4 $(TESTSUITE_AT) $(top_srcdir)/testsuite/testsuite.inc
+	$(AM_V_GEN)$(AUTOTEST) -I $(srcdir) -I $(top_srcdir)/testsuite testsuite.at -o $@.tmp
+	$(AM_V_at)mv $@.tmp $@
+
+atconfig: $(top_builddir)/config.status
+	cd $(top_builddir) && ./config.status tests/$@
+
+clean-local:
+	@test ! -f $(TESTSUITE) || $(SHELL) $(TESTSUITE) --clean
+
+check-local: atconfig atlocal $(TESTSUITE) 
+	@$(SHELL) $(TESTSUITE)
+
+# Run the test suite on the *installed* tree.
+#installcheck-local:
+#	$(SHELL) $(TESTSUITE) AUTOTEST_PATH=$(exec_prefix)/bin
+
+

+# @configure_input@                                     -*- shell-script -*-
+# Configurable variable values for Mailutils test suite.
+# Copyright (C) 2004, 2010-2012, 2014-2015 Free Software Foundation,
+# Inc.
+
+PATH=@abs_builddir@:@abs_top_builddir@/mail:$top_srcdir:$srcdir:$PATH
+testsuitedir=@abs_top_srcdir@/testsuite

+# This file is part of GNU Mailutils. -*- Autotest -*-
+# Copyright (C) 2015 Free Software Foundation, Inc.
+#
+# GNU Mailutils is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3, or (at
+# your option) any later version.
+#
+# GNU Mailutils is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Mailutils.  If not, see <http://www.gnu.org/licenses/>.
+
+AT_SETUP([setting columns from environment])
+AT_KEYWORDS([columns cols00])
+
+# Description: Check if COLUMNS setting is honored.
+# Reported-By: Dan Jacobson <jidanni@jidanni.org>
+# References: <87vbgemcc7.fsf@jidanni.org>,
+#    http://lists.gnu.org/archive/html/bug-mailutils/2015-04/msg00002.html
+
+AT_CHECK([
+unset MAILRC
+COLUMNS=26 mail -nH -E 'set columns=26' -f $testsuitedir/spool/mbox
+COLUMNS=31 mail -nH -f $testsuitedir/spool/mbox
+],
+[0],
+[>N   1 Sergey Poznyakoff
+>N   1 Sergey Poznyakoff  Tue
+])
+
+AT_CLEANUP
+
+

+# This file is part of GNU Mailutils. -*- Autotest -*-
+# Copyright (C) 2015 Free Software Foundation, Inc.
+#
+# GNU Mailutils is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3, or (at
+# your option) any later version.
+#
+# GNU Mailutils is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Mailutils.  If not, see <http://www.gnu.org/licenses/>.
+
+AT_SETUP([setting columns])
+AT_KEYWORDS([columns cols01])
+
+# Description: Mailutils 2.99.98 ignored columns setting
+# Reported-By: Dan Jacobson <jidanni@jidanni.org>
+# References: <87pp6rumzl.fsf@jidanni.org>,
+#   http://lists.gnu.org/archive/html/bug-mailutils/2015-04/msg00000.html
+
+AT_CHECK([
+unset MAILRC
+mail -nH -E 'set columns=26' -f $testsuitedir/spool/mbox
+mail -nH -E 'set columns=31' -f $testsuitedir/spool/mbox
+],
+[0],
+[>N   1 Sergey Poznyakoff
+>N   1 Sergey Poznyakoff  Tue
+])
+
+AT_CLEANUP
+
+

+# This file is part of GNU Mailutils. -*- Autotest -*-
+# Copyright (C) 2015 Free Software Foundation, Inc.
+#
+# GNU Mailutils is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3, or (at
+# your option) any later version.
+#
+# GNU Mailutils is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Mailutils.  If not, see <http://www.gnu.org/licenses/>.
+
+AT_SETUP([copy to stdout])
+AT_KEYWORDS([copy copy00])
+
+# Description: Check if COLUMNS setting is honored
+# Reported-By: Dan Jacobson <jidanni@jidanni.org>
+# References: <87vbgemcc7.fsf@jidanni.org>,
+#    http://lists.gnu.org/archive/html/bug-mailutils/2015-04/msg00002.html
+
+AT_CHECK([
+test -f /dev/stdout || AT_SKIP_TEST
+unset MAILRC
+echo 'copy 1 /dev/stdout' | mail -N -E 'set readonly' -f $testsuitedir/spool/mbox | sed 's/  *$//;/^Held 1 message/d';
+],
+[0],
+[From gray@example.net Tue Jul 16 12:11:35 2002
+Organization: Mailutils-tests
+Received: from example.net (localhost [[127.0.0.1]]) 
+	by example.net with ESMTP id g6G9BZb00791
+	for <gray@example.net>; Tue, 16 Jul 2002 12:11:35 +0300
+Message-Id: <200207160911.g6G9BZb00791@example.net>
+To: Bar <bar@dontmailme.org>
+Subject: MBOX
+Date: Tue, 16 Jul 2002 12:11:35 +0300
+From: Sergey Poznyakoff <gray@example.net>
+
+
+This is a sample user's mbox.
+
+"/dev/stdout"  14/438
+
+])
+
+AT_CLEANUP
+
+

+# This file is part of GNU Mailutils. -*- Autotest -*-
+# Copyright (C) 2015 Free Software Foundation, Inc.
+#
+# GNU Mailutils is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3, or (at
+# your option) any later version.
+#
+# GNU Mailutils is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Mailutils.  If not, see <http://www.gnu.org/licenses/>.
+
+AT_SETUP([reading mail with HOME unset])
+AT_KEYWORDS([nohome])
+
+# Description: Unsetting HOME caused undesirable effects in mail
+# Reported-By: Dan Jacobson <jidanni@jidanni.org>
+# References: <87vbgemcc7.fsf@jidanni.org>,
+#    http://lists.gnu.org/archive/html/bug-mailutils/2015-04/msg00002.html 
+
+AT_CHECK([
+unset MAILRC
+unset HOME
+MAIL=$testsuitedir/spool/mbox mail -nH
+],
+[0],
+[>N   1 Sergey Poznyakoff  Tue Jul 16 12:11  12/390   MBOX
+])
+
+AT_CLEANUP
+

+# This file is part of GNU Mailutils. -*- Autotest -*-
+# Copyright (C) 2007-2012, 2014-2015 Free Software Foundation, Inc.
+#
+# GNU Mailutils is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3, or (at
+# your option) any later version.
+#
+# GNU Mailutils is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Mailutils.  If not, see <http://www.gnu.org/licenses/>.
+
+m4_include([testsuite.inc])
+
+AT_INIT
+AT_TESTED([mail])
+
+m4_include([version.at])
+m4_include([nohome.at])
+m4_include([cols00.at])
+m4_include([cols01.at])
+m4_include([copy00.at])
\ No newline at end of file

+# This file is part of GNU Mailutils. -*- Autotest -*-
+# Copyright (C) 2007-2012, 2014-2015 Free Software Foundation, Inc.
+#
+# GNU Mailutils is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 3, or (at
+# your option) any later version.
+#
+# GNU Mailutils is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Mailutils.  If not, see <http://www.gnu.org/licenses/>.
+
+dnl m4_include([testsuite.inc])
+
+MUT_VERSION(mail)