regex: remove obsolete macro AM_WITH_REGEX

Today, practically nobody uses the GNU rx library, which, according
to its own website <http://www.gnu.org/software/rx/rx.html>, has
been "decommissioned".  Consequently, the automake-provided macro
AM_WITH_REGEX is not used nor required anymore.

See also commits `v1.11-587-g5f335be' and `v1.11-433-g37b0aee',
where that macro had been deprecated.

* m4/regex.m4: Delete.
* m4/Makefile.am (dist_automake_ac_DATA): Do not list it anymore.
* doc/automake.texi (Obsolete Macros): Remove description, and in
fact any mention, of `AM_WITH_REGEX'.
* tests/regex.test: Delete.
* tests/help-regex.test: Likewise.
* tests/regex-obsolete.test: Likewise.
* tests/Makefile.am (TESTS): Do not list them anymore.
* NEWS: Update.

4 files changed, 0 insertions, 93 deletions

diff --git a/tests/help-regex.test b/tests/help-regex.test
deleted file mode 100755
index 2ae770461..000000000
--- a/tests/help-regex.test
+++ /dev/null
@@ -1,31 +0,0 @@
-#! /bin/sh
-# Copyright (C) 2010, 2011 Free Software Foundation, Inc.
-#
-# This program 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 2, or (at your option)
-# any later version.
-#
-# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
-
-# Make sure that obsolescent macro `AM_WITH_REGEX' adds proper text to
-# the configure help screen.
-
-. ./defs || Exit 1
-
-cat > configure.in <<END
-AC_INIT([$me], [1.0])
-AM_WITH_REGEX
-END
-
-$ACLOCAL
-$AUTOCONF
-grep_configure_help --without-regex ' use GNU rx($| )'
-
-:
diff --git a/tests/list-of-tests.mk b/tests/list-of-tests.mk
index 259b23277..841935504 100644
--- a/tests/list-of-tests.mk
+++ b/tests/list-of-tests.mk
@@ -441,7 +441,6 @@ help-init.test \
 help-lispdir.test \
 help-multilib.test \
 help-python.test \
-help-regex.test \
 help-silent.test \
 help-upc.test \
 hfs.test \
@@ -868,8 +867,6 @@ remake-deleted-am.test \
 remake-am-pr10111.test \
 remake-m4-pr10111.test \
 pr8365-remake-timing.test \
-regex.test \
-regex-obsolete.test \
 req.test \
 reqd.test \
 reqd2.test \
diff --git a/tests/regex-obsolete.test b/tests/regex-obsolete.test
deleted file mode 100755
index b1563095b..000000000
--- a/tests/regex-obsolete.test
+++ /dev/null
@@ -1,30 +0,0 @@
-#! /bin/sh
-# Copyright (C) 2010, 2011 Free Software Foundation, Inc.
-#
-# This program 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 2, or (at your option)
-# any later version.
-#
-# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
-
-# Check that the AM_WITH_REGEX macro is reported as obsolete.
-
-. ./defs || Exit 1
-
-cat >> configure.in << 'END'
-AM_WITH_REGEX
-END
-
-$ACLOCAL
-$AUTOCONF -Werror -Wobsolete 2>stderr && { cat stderr >&2; Exit 1; }
-cat stderr >&2
-grep '^configure\.in:.*AM_WITH_REGEX.*obsolete' stderr
-
-:
diff --git a/tests/regex.test b/tests/regex.test
deleted file mode 100755
index 586ab5a2e..000000000
--- a/tests/regex.test
+++ /dev/null
@@ -1,29 +0,0 @@
-#! /bin/sh
-# Copyright (C) 2004, 2011 Free Software Foundation, Inc.
-#
-# This program 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 2, or (at your option)
-# any later version.
-#
-# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
-
-# Make sure AM_WITH_REGEX compiles and runs.
-
-required=cc
-. ./defs || Exit 1
-
-cat >> configure.in << 'END'
-AM_WITH_REGEX
-END
-
-$ACLOCAL
-$AUTOCONF
-./configure
-./configure --without-regex