Merge branch 'release/debian/0.9.10-1'debian/0.9.10-1

130 files changed, 438 insertions, 273 deletions

diff --git a/gnulib-m4/00gnulib.m4 b/gnulib-m4/00gnulib.m4
index bb3512f..bd24796 100644
--- a/gnulib-m4/00gnulib.m4
+++ b/gnulib-m4/00gnulib.m4
@@ -1,5 +1,5 @@
 # 00gnulib.m4 serial 3
-dnl Copyright (C) 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/absolute-header.m4 b/gnulib-m4/absolute-header.m4
index c73adc8..4e67e5f 100644
--- a/gnulib-m4/absolute-header.m4
+++ b/gnulib-m4/absolute-header.m4
@@ -1,5 +1,5 @@
 # absolute-header.m4 serial 16
-dnl Copyright (C) 2006-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/alloca.m4 b/gnulib-m4/alloca.m4
index 867954a..b9d94e8 100644
--- a/gnulib-m4/alloca.m4
+++ b/gnulib-m4/alloca.m4
@@ -1,5 +1,5 @@
 # alloca.m4 serial 14
-dnl Copyright (C) 2002-2004, 2006-2007, 2009-2017 Free Software Foundation,
+dnl Copyright (C) 2002-2004, 2006-2007, 2009-2018 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/gnulib-m4/asm-underscore.m4 b/gnulib-m4/asm-underscore.m4
index 07270c9..58a5299 100644
--- a/gnulib-m4/asm-underscore.m4
+++ b/gnulib-m4/asm-underscore.m4
@@ -1,5 +1,5 @@
-# asm-underscore.m4 serial 3
-dnl Copyright (C) 2010-2017 Free Software Foundation, Inc.
+# asm-underscore.m4 serial 4
+dnl Copyright (C) 2010-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -14,6 +14,7 @@ dnl From Bruno Haible. Based on as-underscore.m4 in GNU clisp.
 
 AC_DEFUN([gl_ASM_SYMBOL_PREFIX],
 [
+  AC_REQUIRE([AC_PROG_EGREP])
   dnl We don't use GCC's __USER_LABEL_PREFIX__ here, because
   dnl 1. It works only for GCC.
   dnl 2. It is incorrectly defined on some platforms, in some GCC versions.
@@ -29,7 +30,7 @@ int foo(void) { return 0; }
 EOF
      # Look for the assembly language name in the .s file.
      AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS $gl_c_asm_opt conftest.c) >/dev/null 2>&1
-     if LC_ALL=C grep -E '(^|[[^a-zA-Z0-9_]])_foo([[^a-zA-Z0-9_]]|$)' conftest.$gl_asmext >/dev/null; then
+     if LC_ALL=C $EGREP '(^|[[^a-zA-Z0-9_]])_foo([[^a-zA-Z0-9_]]|$)' conftest.$gl_asmext >/dev/null; then
        gl_cv_prog_as_underscore=yes
      else
        gl_cv_prog_as_underscore=no
diff --git a/gnulib-m4/btowc.m4 b/gnulib-m4/btowc.m4
index f59db65..8acdffc 100644
--- a/gnulib-m4/btowc.m4
+++ b/gnulib-m4/btowc.m4
@@ -1,5 +1,5 @@
 # btowc.m4 serial 11
-dnl Copyright (C) 2008-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/builtin-expect.m4 b/gnulib-m4/builtin-expect.m4
index aa3364b..a1eaf96 100644
--- a/gnulib-m4/builtin-expect.m4
+++ b/gnulib-m4/builtin-expect.m4
@@ -1,6 +1,6 @@
 dnl Check for __builtin_expect.
 
-dnl Copyright 2016-2017 Free Software Foundation, Inc.
+dnl Copyright 2016-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/configmake.m4 b/gnulib-m4/configmake.m4
index b783296..e0b5835 100644
--- a/gnulib-m4/configmake.m4
+++ b/gnulib-m4/configmake.m4
@@ -1,5 +1,5 @@
 # configmake.m4 serial 2
-dnl Copyright (C) 2010-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/ctype.m4 b/gnulib-m4/ctype.m4
index 3791f46..85a7e3e 100644
--- a/gnulib-m4/ctype.m4
+++ b/gnulib-m4/ctype.m4
@@ -1,5 +1,5 @@
 # ctype_h.m4 serial 6
-dnl Copyright (C) 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/dirname.m4 b/gnulib-m4/dirname.m4
index 46f5394..820b047 100644
--- a/gnulib-m4/dirname.m4
+++ b/gnulib-m4/dirname.m4
@@ -1,5 +1,5 @@
 #serial 10   -*- autoconf -*-
-dnl Copyright (C) 2002-2006, 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/double-slash-root.m4 b/gnulib-m4/double-slash-root.m4
index c80f9ea..e99d4a3 100644
--- a/gnulib-m4/double-slash-root.m4
+++ b/gnulib-m4/double-slash-root.m4
@@ -1,5 +1,5 @@
 # double-slash-root.m4 serial 4   -*- Autoconf -*-
-dnl Copyright (C) 2006, 2008-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2008-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/eealloc.m4 b/gnulib-m4/eealloc.m4
index 96b9bca..a5a4e26 100644
--- a/gnulib-m4/eealloc.m4
+++ b/gnulib-m4/eealloc.m4
@@ -1,5 +1,5 @@
 # eealloc.m4 serial 3
-dnl Copyright (C) 2003, 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/environ.m4 b/gnulib-m4/environ.m4
index 3b9fa5f..68b67ea 100644
--- a/gnulib-m4/environ.m4
+++ b/gnulib-m4/environ.m4
@@ -1,5 +1,5 @@
 # environ.m4 serial 6
-dnl Copyright (C) 2001-2004, 2006-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2001-2004, 2006-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/errno_h.m4 b/gnulib-m4/errno_h.m4
index 9f0f2f2..9dbdedd 100644
--- a/gnulib-m4/errno_h.m4
+++ b/gnulib-m4/errno_h.m4
@@ -1,5 +1,5 @@
 # errno_h.m4 serial 12
-dnl Copyright (C) 2004, 2006, 2008-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2004, 2006, 2008-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/error.m4 b/gnulib-m4/error.m4
index 57c6f12..280fdce 100644
--- a/gnulib-m4/error.m4
+++ b/gnulib-m4/error.m4
@@ -1,6 +1,6 @@
 #serial 14
 
-# Copyright (C) 1996-1998, 2001-2004, 2009-2017 Free Software Foundation, Inc.
+# Copyright (C) 1996-1998, 2001-2004, 2009-2018 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/gnulib-m4/exponentd.m4 b/gnulib-m4/exponentd.m4
index cd64b92..7b02a4c 100644
--- a/gnulib-m4/exponentd.m4
+++ b/gnulib-m4/exponentd.m4
@@ -1,5 +1,5 @@
 # exponentd.m4 serial 3
-dnl Copyright (C) 2007-2008, 2010-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2008, 2010-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/exponentf.m4 b/gnulib-m4/exponentf.m4
index 54f609e..b259b91 100644
--- a/gnulib-m4/exponentf.m4
+++ b/gnulib-m4/exponentf.m4
@@ -1,5 +1,5 @@
 # exponentf.m4 serial 2
-dnl Copyright (C) 2007-2008, 2010-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2008, 2010-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/exponentl.m4 b/gnulib-m4/exponentl.m4
index ebfebe4..136fa61 100644
--- a/gnulib-m4/exponentl.m4
+++ b/gnulib-m4/exponentl.m4
@@ -1,5 +1,5 @@
 # exponentl.m4 serial 4
-dnl Copyright (C) 2007-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/extensions.m4 b/gnulib-m4/extensions.m4
index f854338..71a854f 100644
--- a/gnulib-m4/extensions.m4
+++ b/gnulib-m4/extensions.m4
@@ -1,7 +1,7 @@
-# serial 17  -*- Autoconf -*-
+# serial 18  -*- Autoconf -*-
 # Enable extensions on systems that normally disable them.
 
-# Copyright (C) 2003, 2006-2017 Free Software Foundation, Inc.
+# Copyright (C) 2003, 2006-2018 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
@@ -118,6 +118,11 @@ dnl configure.ac when using autoheader 2.62.
 #ifndef _XOPEN_SOURCE
 # undef _XOPEN_SOURCE
 #endif
+/* Enable X/Open compliant socket functions that do not require linking
+   with -lxnet on HP-UX 11.11.  */
+#ifndef _HPUX_ALT_XOPEN_SOCKET_API
+# undef _HPUX_ALT_XOPEN_SOCKET_API
+#endif
 /* Enable general extensions on Solaris.  */
 #ifndef __EXTENSIONS__
 # undef __EXTENSIONS__
@@ -163,6 +168,7 @@ dnl configure.ac when using autoheader 2.62.
           [ac_cv_should_define__xopen_source=yes])])])
   test $ac_cv_should_define__xopen_source = yes &&
     AC_DEFINE([_XOPEN_SOURCE], [500])
+  AC_DEFINE([_HPUX_ALT_XOPEN_SOCKET_API])
 ])# AC_USE_SYSTEM_EXTENSIONS
 
 # gl_USE_SYSTEM_EXTENSIONS
diff --git a/gnulib-m4/extern-inline.m4 b/gnulib-m4/extern-inline.m4
index 207aa6a..da8a2cc 100644
--- a/gnulib-m4/extern-inline.m4
+++ b/gnulib-m4/extern-inline.m4
@@ -1,6 +1,6 @@
 dnl 'extern inline' a la ISO C99.
 
-dnl Copyright 2012-2017 Free Software Foundation, Inc.
+dnl Copyright 2012-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/fcntl-o.m4 b/gnulib-m4/fcntl-o.m4
index b388d89..4dc3daa 100644
--- a/gnulib-m4/fcntl-o.m4
+++ b/gnulib-m4/fcntl-o.m4
@@ -1,5 +1,5 @@
 # fcntl-o.m4 serial 5
-dnl Copyright (C) 2006, 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/fdopen.m4 b/gnulib-m4/fdopen.m4
index 42f928e..bff80ab 100644
--- a/gnulib-m4/fdopen.m4
+++ b/gnulib-m4/fdopen.m4
@@ -1,5 +1,5 @@
 # fdopen.m4 serial 4
-dnl Copyright (C) 2011-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/flexmember.m4 b/gnulib-m4/flexmember.m4
index 9d3b50d..db93cf3 100644
--- a/gnulib-m4/flexmember.m4
+++ b/gnulib-m4/flexmember.m4
@@ -1,7 +1,7 @@
 # serial 5
 # Check for flexible array member support.
 
-# Copyright (C) 2006, 2009-2017 Free Software Foundation, Inc.
+# Copyright (C) 2006, 2009-2018 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/float_h.m4 b/gnulib-m4/float_h.m4
index 24bd06e..02beb85 100644
--- a/gnulib-m4/float_h.m4
+++ b/gnulib-m4/float_h.m4
@@ -1,5 +1,5 @@
 # float_h.m4 serial 12
-dnl Copyright (C) 2007, 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/fpieee.m4 b/gnulib-m4/fpieee.m4
index 3d57112..b58840f 100644
--- a/gnulib-m4/fpieee.m4
+++ b/gnulib-m4/fpieee.m4
@@ -1,5 +1,5 @@
 # fpieee.m4 serial 2  -*- coding: utf-8 -*-
-dnl Copyright (C) 2007, 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/frexp.m4 b/gnulib-m4/frexp.m4
index 425765b..33e07f5 100644
--- a/gnulib-m4/frexp.m4
+++ b/gnulib-m4/frexp.m4
@@ -1,5 +1,5 @@
 # frexp.m4 serial 16
-dnl Copyright (C) 2007-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/frexpl.m4 b/gnulib-m4/frexpl.m4
index 717aec0..d7845d1 100644
--- a/gnulib-m4/frexpl.m4
+++ b/gnulib-m4/frexpl.m4
@@ -1,5 +1,5 @@
 # frexpl.m4 serial 21
-dnl Copyright (C) 2007-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/fseterr.m4 b/gnulib-m4/fseterr.m4
index f445ce0..ca920c4 100644
--- a/gnulib-m4/fseterr.m4
+++ b/gnulib-m4/fseterr.m4
@@ -1,5 +1,5 @@
 # fseterr.m4 serial 1
-dnl Copyright (C) 2012-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/getpagesize.m4 b/gnulib-m4/getpagesize.m4
index f891200..eb17d60 100644
--- a/gnulib-m4/getpagesize.m4
+++ b/gnulib-m4/getpagesize.m4
@@ -1,5 +1,5 @@
-# getpagesize.m4 serial 9
-dnl Copyright (C) 2002, 2004-2005, 2007, 2009-2017 Free Software Foundation,
+# getpagesize.m4 serial 10
+dnl Copyright (C) 2002, 2004-2005, 2007, 2009-2018 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -9,8 +9,8 @@ AC_DEFUN([gl_FUNC_GETPAGESIZE],
 [
   AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
   AC_REQUIRE([AC_CANONICAL_HOST])
-  AC_CHECK_FUNCS([getpagesize])
-  if test $ac_cv_func_getpagesize = no; then
+  gl_CHECK_FUNC_GETPAGESIZE
+  if test $gl_cv_func_getpagesize = no; then
     HAVE_GETPAGESIZE=0
     AC_CHECK_HEADERS([OS.h])
     if test $ac_cv_header_OS_h = yes; then
@@ -30,3 +30,20 @@ AC_DEFUN([gl_FUNC_GETPAGESIZE],
   dnl mingw has getpagesize() in libgcc.a but doesn't declare it.
   AC_CHECK_DECL([getpagesize], , [HAVE_DECL_GETPAGESIZE=0])
 ])
+
+dnl Tests whether the function getpagesize() exists.
+dnl Sets gl_cv_func_getpagesize.
+AC_DEFUN([gl_CHECK_FUNC_GETPAGESIZE],
+[
+  dnl We can't use AC_CHECK_FUNC here, because getpagesize() is defined as a
+  dnl static inline function when compiling for Android 4.4 or older.
+  AC_CACHE_CHECK([for getpagesize], [gl_cv_func_getpagesize],
+    [AC_LINK_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <unistd.h>]],
+          [[return getpagesize();]])
+       ],
+       [gl_cv_func_getpagesize=yes],
+       [gl_cv_func_getpagesize=no])
+    ])
+])
diff --git a/gnulib-m4/getprogname.m4 b/gnulib-m4/getprogname.m4
index efc06e7..3a9ba8b 100644
--- a/gnulib-m4/getprogname.m4
+++ b/gnulib-m4/getprogname.m4
@@ -1,6 +1,6 @@
 # getprogname.m4 - check for getprogname or replacements for it
 
-# Copyright (C) 2016-2017 Free Software Foundation, Inc.
+# Copyright (C) 2016-2018 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/glibc21.m4 b/gnulib-m4/glibc21.m4
index 2e30ed6..126aa1a 100644
--- a/gnulib-m4/glibc21.m4
+++ b/gnulib-m4/glibc21.m4
@@ -1,5 +1,5 @@
 # glibc21.m4 serial 5
-dnl Copyright (C) 2000-2002, 2004, 2008, 2010-2017 Free Software Foundation,
+dnl Copyright (C) 2000-2002, 2004, 2008, 2010-2018 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/gnulib-m4/gnulib-cache.m4 b/gnulib-m4/gnulib-cache.m4
index 9fe2ea3..0a8bc00 100644
--- a/gnulib-m4/gnulib-cache.m4
+++ b/gnulib-m4/gnulib-cache.m4
@@ -1,4 +1,4 @@
-# Copyright (C) 2002-2017 Free Software Foundation, Inc.
+# Copyright (C) 2002-2018 Free Software Foundation, Inc.
 #
 # This file is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -27,7 +27,7 @@
 
 
 # Specification in the form of a command-line invocation:
-#   gnulib-tool --import --local-dir=gnulib-local --lib=libunistring --source-base=lib --m4-base=gnulib-m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --with-tests --lgpl=3orGPLv2 --makefile-name=Makefile.gnulib --no-conditional-dependencies --libtool --macro-prefix=gl relocatable-lib-lgpl unicase/base unicase/empty-prefix-context unicase/empty-suffix-context unicase/locale-language unicase/tolower unicase/totitle unicase/toupper unicase/u16-casecmp unicase/u16-casecoll unicase/u16-casefold unicase/u16-casexfrm unicase/u16-ct-casefold unicase/u16-ct-tolower unicase/u16-ct-totitle unicase/u16-ct-toupper unicase/u16-is-cased unicase/u16-is-casefolded unicase/u16-is-lowercase unicase/u16-is-titlecase unicase/u16-is-uppercase unicase/u16-tolower unicase/u16-totitle unicase/u16-toupper unicase/u32-casecmp unicase/u32-casecoll unicase/u32-casefold unicase/u32-casexfrm unicase/u32-ct-casefold unicase/u32-ct-tolower unicase/u32-ct-totitle unicase/u32-ct-toupper unicase/u32-is-cased unicase/u32-is-casefolded unicase/u32-is-lowercase unicase/u32-is-titlecase unicase/u32-is-uppercase unicase/u32-tolower unicase/u32-totitle unicase/u32-toupper unicase/u8-casecmp unicase/u8-casecoll unicase/u8-casefold unicase/u8-casexfrm unicase/u8-ct-casefold unicase/u8-ct-tolower unicase/u8-ct-totitle unicase/u8-ct-toupper unicase/u8-is-cased unicase/u8-is-casefolded unicase/u8-is-lowercase unicase/u8-is-titlecase unicase/u8-is-uppercase unicase/u8-tolower unicase/u8-totitle unicase/u8-toupper unicase/ulc-casecmp unicase/ulc-casecoll unicase/ulc-casexfrm uniconv/base uniconv/u16-conv-from-enc uniconv/u16-conv-to-enc uniconv/u16-strconv-from-enc uniconv/u16-strconv-from-locale uniconv/u16-strconv-to-enc uniconv/u16-strconv-to-locale uniconv/u32-conv-from-enc uniconv/u32-conv-to-enc uniconv/u32-strconv-from-enc uniconv/u32-strconv-from-locale uniconv/u32-strconv-to-enc uniconv/u32-strconv-to-locale uniconv/u8-conv-from-enc uniconv/u8-conv-to-enc uniconv/u8-strconv-from-enc uniconv/u8-strconv-from-locale uniconv/u8-strconv-to-enc uniconv/u8-strconv-to-locale unictype/base unictype/bidiclass-all unictype/block-all unictype/category-all unictype/combining-class-all unictype/ctype-alnum unictype/ctype-alpha unictype/ctype-blank unictype/ctype-cntrl unictype/ctype-digit unictype/ctype-graph unictype/ctype-lower unictype/ctype-print unictype/ctype-punct unictype/ctype-space unictype/ctype-upper unictype/ctype-xdigit unictype/decimal-digit unictype/digit unictype/joininggroup-all unictype/joiningtype-all unictype/mirror unictype/numeric unictype/property-all unictype/scripts-all unictype/syntax-c-ident unictype/syntax-c-whitespace unictype/syntax-java-ident unictype/syntax-java-whitespace unigbrk/base unigbrk/u16-grapheme-breaks unigbrk/u16-grapheme-next unigbrk/u16-grapheme-prev unigbrk/u32-grapheme-breaks unigbrk/u32-grapheme-next unigbrk/u32-grapheme-prev unigbrk/u8-grapheme-breaks unigbrk/u8-grapheme-next unigbrk/u8-grapheme-prev unigbrk/uc-gbrk-prop unigbrk/uc-grapheme-breaks unigbrk/uc-is-grapheme-break unigbrk/ulc-grapheme-breaks unilbrk/base unilbrk/u16-possible-linebreaks unilbrk/u16-width-linebreaks unilbrk/u32-possible-linebreaks unilbrk/u32-width-linebreaks unilbrk/u8-possible-linebreaks unilbrk/u8-width-linebreaks unilbrk/ulc-possible-linebreaks unilbrk/ulc-width-linebreaks uniname/base uniname/uniname uninorm/base uninorm/canonical-decomposition uninorm/composition uninorm/decomposition uninorm/filter uninorm/nfc uninorm/nfd uninorm/nfkc uninorm/nfkd uninorm/u16-normalize uninorm/u16-normcmp uninorm/u16-normcoll uninorm/u16-normxfrm uninorm/u32-normalize uninorm/u32-normcmp uninorm/u32-normcoll uninorm/u32-normxfrm uninorm/u8-normalize uninorm/u8-normcmp uninorm/u8-normcoll uninorm/u8-normxfrm unistdio/base unistdio/u16-asnprintf unistdio/u16-asprintf unistdio/u16-snprintf unistdio/u16-sprintf unistdio/u16-u16-asnprintf unistdio/u16-u16-asprintf unistdio/u16-u16-snprintf unistdio/u16-u16-sprintf unistdio/u16-u16-vasnprintf unistdio/u16-u16-vasprintf unistdio/u16-u16-vsnprintf unistdio/u16-u16-vsprintf unistdio/u16-vasnprintf unistdio/u16-vasprintf unistdio/u16-vsnprintf unistdio/u16-vsprintf unistdio/u32-asnprintf unistdio/u32-asprintf unistdio/u32-snprintf unistdio/u32-sprintf unistdio/u32-u32-asnprintf unistdio/u32-u32-asprintf unistdio/u32-u32-snprintf unistdio/u32-u32-sprintf unistdio/u32-u32-vasnprintf unistdio/u32-u32-vasprintf unistdio/u32-u32-vsnprintf unistdio/u32-u32-vsprintf unistdio/u32-vasnprintf unistdio/u32-vasprintf unistdio/u32-vsnprintf unistdio/u32-vsprintf unistdio/u8-asnprintf unistdio/u8-asprintf unistdio/u8-snprintf unistdio/u8-sprintf unistdio/u8-u8-asnprintf unistdio/u8-u8-asprintf unistdio/u8-u8-snprintf unistdio/u8-u8-sprintf unistdio/u8-u8-vasnprintf unistdio/u8-u8-vasprintf unistdio/u8-u8-vsnprintf unistdio/u8-u8-vsprintf unistdio/u8-vasnprintf unistdio/u8-vasprintf unistdio/u8-vsnprintf unistdio/u8-vsprintf unistdio/ulc-asnprintf unistdio/ulc-asprintf unistdio/ulc-fprintf unistdio/ulc-snprintf unistdio/ulc-sprintf unistdio/ulc-vasnprintf unistdio/ulc-vasprintf unistdio/ulc-vfprintf unistdio/ulc-vsnprintf unistdio/ulc-vsprintf unistr/base unistr/u16-check unistr/u16-chr unistr/u16-cmp unistr/u16-cmp2 unistr/u16-cpy unistr/u16-cpy-alloc unistr/u16-endswith unistr/u16-mblen unistr/u16-mbsnlen unistr/u16-mbtouc unistr/u16-mbtouc-unsafe unistr/u16-mbtoucr unistr/u16-move unistr/u16-next unistr/u16-prev unistr/u16-set unistr/u16-startswith unistr/u16-stpcpy unistr/u16-stpncpy unistr/u16-strcat unistr/u16-strchr unistr/u16-strcmp unistr/u16-strcoll unistr/u16-strcpy unistr/u16-strcspn unistr/u16-strdup unistr/u16-strlen unistr/u16-strmblen unistr/u16-strmbtouc unistr/u16-strncat unistr/u16-strncmp unistr/u16-strncpy unistr/u16-strnlen unistr/u16-strpbrk unistr/u16-strrchr unistr/u16-strspn unistr/u16-strstr unistr/u16-strtok unistr/u16-to-u32 unistr/u16-to-u8 unistr/u16-uctomb unistr/u32-check unistr/u32-chr unistr/u32-cmp unistr/u32-cmp2 unistr/u32-cpy unistr/u32-cpy-alloc unistr/u32-endswith unistr/u32-mblen unistr/u32-mbsnlen unistr/u32-mbtouc unistr/u32-mbtouc-unsafe unistr/u32-mbtoucr unistr/u32-move unistr/u32-next unistr/u32-prev unistr/u32-set unistr/u32-startswith unistr/u32-stpcpy unistr/u32-stpncpy unistr/u32-strcat unistr/u32-strchr unistr/u32-strcmp unistr/u32-strcoll unistr/u32-strcpy unistr/u32-strcspn unistr/u32-strdup unistr/u32-strlen unistr/u32-strmblen unistr/u32-strmbtouc unistr/u32-strncat unistr/u32-strncmp unistr/u32-strncpy unistr/u32-strnlen unistr/u32-strpbrk unistr/u32-strrchr unistr/u32-strspn unistr/u32-strstr unistr/u32-strtok unistr/u32-to-u16 unistr/u32-to-u8 unistr/u32-uctomb unistr/u8-check unistr/u8-chr unistr/u8-cmp unistr/u8-cmp2 unistr/u8-cpy unistr/u8-cpy-alloc unistr/u8-endswith unistr/u8-mblen unistr/u8-mbsnlen unistr/u8-mbtouc unistr/u8-mbtouc-unsafe unistr/u8-mbtoucr unistr/u8-move unistr/u8-next unistr/u8-prev unistr/u8-set unistr/u8-startswith unistr/u8-stpcpy unistr/u8-stpncpy unistr/u8-strcat unistr/u8-strchr unistr/u8-strcmp unistr/u8-strcoll unistr/u8-strcpy unistr/u8-strcspn unistr/u8-strdup unistr/u8-strlen unistr/u8-strmblen unistr/u8-strmbtouc unistr/u8-strncat unistr/u8-strncmp unistr/u8-strncpy unistr/u8-strnlen unistr/u8-strpbrk unistr/u8-strrchr unistr/u8-strspn unistr/u8-strstr unistr/u8-strtok unistr/u8-to-u16 unistr/u8-to-u32 unistr/u8-uctomb unitypes uniwbrk/base uniwbrk/u16-wordbreaks uniwbrk/u32-wordbreaks uniwbrk/u8-wordbreaks uniwbrk/ulc-wordbreaks uniwbrk/wordbreak-property uniwidth/base uniwidth/u16-strwidth uniwidth/u16-width uniwidth/u32-strwidth uniwidth/u32-width uniwidth/u8-strwidth uniwidth/u8-width uniwidth/width
+#   gnulib-tool --import --local-dir=gnulib-local --lib=libunistring --source-base=lib --m4-base=gnulib-m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --with-tests --lgpl=3orGPLv2 --makefile-name=Makefile.gnulib --no-conditional-dependencies --libtool --macro-prefix=gl relocatable-lib-lgpl unicase/base unicase/empty-prefix-context unicase/empty-suffix-context unicase/locale-language unicase/tolower unicase/totitle unicase/toupper unicase/u16-casecmp unicase/u16-casecoll unicase/u16-casefold unicase/u16-casexfrm unicase/u16-ct-casefold unicase/u16-ct-tolower unicase/u16-ct-totitle unicase/u16-ct-toupper unicase/u16-is-cased unicase/u16-is-casefolded unicase/u16-is-lowercase unicase/u16-is-titlecase unicase/u16-is-uppercase unicase/u16-prefix-context unicase/u16-suffix-context unicase/u16-tolower unicase/u16-totitle unicase/u16-toupper unicase/u32-casecmp unicase/u32-casecoll unicase/u32-casefold unicase/u32-casexfrm unicase/u32-ct-casefold unicase/u32-ct-tolower unicase/u32-ct-totitle unicase/u32-ct-toupper unicase/u32-is-cased unicase/u32-is-casefolded unicase/u32-is-lowercase unicase/u32-is-titlecase unicase/u32-is-uppercase unicase/u32-prefix-context unicase/u32-suffix-context unicase/u32-tolower unicase/u32-totitle unicase/u32-toupper unicase/u8-casecmp unicase/u8-casecoll unicase/u8-casefold unicase/u8-casexfrm unicase/u8-ct-casefold unicase/u8-ct-tolower unicase/u8-ct-totitle unicase/u8-ct-toupper unicase/u8-is-cased unicase/u8-is-casefolded unicase/u8-is-lowercase unicase/u8-is-titlecase unicase/u8-is-uppercase unicase/u8-prefix-context unicase/u8-suffix-context unicase/u8-tolower unicase/u8-totitle unicase/u8-toupper unicase/ulc-casecmp unicase/ulc-casecoll unicase/ulc-casexfrm uniconv/base uniconv/u16-conv-from-enc uniconv/u16-conv-to-enc uniconv/u16-strconv-from-enc uniconv/u16-strconv-from-locale uniconv/u16-strconv-to-enc uniconv/u16-strconv-to-locale uniconv/u32-conv-from-enc uniconv/u32-conv-to-enc uniconv/u32-strconv-from-enc uniconv/u32-strconv-from-locale uniconv/u32-strconv-to-enc uniconv/u32-strconv-to-locale uniconv/u8-conv-from-enc uniconv/u8-conv-to-enc uniconv/u8-strconv-from-enc uniconv/u8-strconv-from-locale uniconv/u8-strconv-to-enc uniconv/u8-strconv-to-locale unictype/base unictype/bidiclass-all unictype/block-all unictype/category-all unictype/combining-class-all unictype/ctype-alnum unictype/ctype-alpha unictype/ctype-blank unictype/ctype-cntrl unictype/ctype-digit unictype/ctype-graph unictype/ctype-lower unictype/ctype-print unictype/ctype-punct unictype/ctype-space unictype/ctype-upper unictype/ctype-xdigit unictype/decimal-digit unictype/digit unictype/joininggroup-all unictype/joiningtype-all unictype/mirror unictype/numeric unictype/property-all unictype/scripts-all unictype/syntax-c-ident unictype/syntax-c-whitespace unictype/syntax-java-ident unictype/syntax-java-whitespace unigbrk/base unigbrk/u16-grapheme-breaks unigbrk/u16-grapheme-next unigbrk/u16-grapheme-prev unigbrk/u32-grapheme-breaks unigbrk/u32-grapheme-next unigbrk/u32-grapheme-prev unigbrk/u8-grapheme-breaks unigbrk/u8-grapheme-next unigbrk/u8-grapheme-prev unigbrk/uc-gbrk-prop unigbrk/uc-grapheme-breaks unigbrk/uc-is-grapheme-break unigbrk/ulc-grapheme-breaks unilbrk/base unilbrk/u16-possible-linebreaks unilbrk/u16-width-linebreaks unilbrk/u32-possible-linebreaks unilbrk/u32-width-linebreaks unilbrk/u8-possible-linebreaks unilbrk/u8-width-linebreaks unilbrk/ulc-possible-linebreaks unilbrk/ulc-width-linebreaks uniname/base uniname/uniname uninorm/base uninorm/canonical-decomposition uninorm/composition uninorm/decomposition uninorm/filter uninorm/nfc uninorm/nfd uninorm/nfkc uninorm/nfkd uninorm/u16-normalize uninorm/u16-normcmp uninorm/u16-normcoll uninorm/u16-normxfrm uninorm/u32-normalize uninorm/u32-normcmp uninorm/u32-normcoll uninorm/u32-normxfrm uninorm/u8-normalize uninorm/u8-normcmp uninorm/u8-normcoll uninorm/u8-normxfrm unistdio/base unistdio/u16-asnprintf unistdio/u16-asprintf unistdio/u16-snprintf unistdio/u16-sprintf unistdio/u16-u16-asnprintf unistdio/u16-u16-asprintf unistdio/u16-u16-snprintf unistdio/u16-u16-sprintf unistdio/u16-u16-vasnprintf unistdio/u16-u16-vasprintf unistdio/u16-u16-vsnprintf unistdio/u16-u16-vsprintf unistdio/u16-vasnprintf unistdio/u16-vasprintf unistdio/u16-vsnprintf unistdio/u16-vsprintf unistdio/u32-asnprintf unistdio/u32-asprintf unistdio/u32-snprintf unistdio/u32-sprintf unistdio/u32-u32-asnprintf unistdio/u32-u32-asprintf unistdio/u32-u32-snprintf unistdio/u32-u32-sprintf unistdio/u32-u32-vasnprintf unistdio/u32-u32-vasprintf unistdio/u32-u32-vsnprintf unistdio/u32-u32-vsprintf unistdio/u32-vasnprintf unistdio/u32-vasprintf unistdio/u32-vsnprintf unistdio/u32-vsprintf unistdio/u8-asnprintf unistdio/u8-asprintf unistdio/u8-snprintf unistdio/u8-sprintf unistdio/u8-u8-asnprintf unistdio/u8-u8-asprintf unistdio/u8-u8-snprintf unistdio/u8-u8-sprintf unistdio/u8-u8-vasnprintf unistdio/u8-u8-vasprintf unistdio/u8-u8-vsnprintf unistdio/u8-u8-vsprintf unistdio/u8-vasnprintf unistdio/u8-vasprintf unistdio/u8-vsnprintf unistdio/u8-vsprintf unistdio/ulc-asnprintf unistdio/ulc-asprintf unistdio/ulc-fprintf unistdio/ulc-snprintf unistdio/ulc-sprintf unistdio/ulc-vasnprintf unistdio/ulc-vasprintf unistdio/ulc-vfprintf unistdio/ulc-vsnprintf unistdio/ulc-vsprintf unistr/base unistr/u16-check unistr/u16-chr unistr/u16-cmp unistr/u16-cmp2 unistr/u16-cpy unistr/u16-cpy-alloc unistr/u16-endswith unistr/u16-mblen unistr/u16-mbsnlen unistr/u16-mbtouc unistr/u16-mbtouc-unsafe unistr/u16-mbtoucr unistr/u16-move unistr/u16-next unistr/u16-prev unistr/u16-set unistr/u16-startswith unistr/u16-stpcpy unistr/u16-stpncpy unistr/u16-strcat unistr/u16-strchr unistr/u16-strcmp unistr/u16-strcoll unistr/u16-strcpy unistr/u16-strcspn unistr/u16-strdup unistr/u16-strlen unistr/u16-strmblen unistr/u16-strmbtouc unistr/u16-strncat unistr/u16-strncmp unistr/u16-strncpy unistr/u16-strnlen unistr/u16-strpbrk unistr/u16-strrchr unistr/u16-strspn unistr/u16-strstr unistr/u16-strtok unistr/u16-to-u32 unistr/u16-to-u8 unistr/u16-uctomb unistr/u32-check unistr/u32-chr unistr/u32-cmp unistr/u32-cmp2 unistr/u32-cpy unistr/u32-cpy-alloc unistr/u32-endswith unistr/u32-mblen unistr/u32-mbsnlen unistr/u32-mbtouc unistr/u32-mbtouc-unsafe unistr/u32-mbtoucr unistr/u32-move unistr/u32-next unistr/u32-prev unistr/u32-set unistr/u32-startswith unistr/u32-stpcpy unistr/u32-stpncpy unistr/u32-strcat unistr/u32-strchr unistr/u32-strcmp unistr/u32-strcoll unistr/u32-strcpy unistr/u32-strcspn unistr/u32-strdup unistr/u32-strlen unistr/u32-strmblen unistr/u32-strmbtouc unistr/u32-strncat unistr/u32-strncmp unistr/u32-strncpy unistr/u32-strnlen unistr/u32-strpbrk unistr/u32-strrchr unistr/u32-strspn unistr/u32-strstr unistr/u32-strtok unistr/u32-to-u16 unistr/u32-to-u8 unistr/u32-uctomb unistr/u8-check unistr/u8-chr unistr/u8-cmp unistr/u8-cmp2 unistr/u8-cpy unistr/u8-cpy-alloc unistr/u8-endswith unistr/u8-mblen unistr/u8-mbsnlen unistr/u8-mbtouc unistr/u8-mbtouc-unsafe unistr/u8-mbtoucr unistr/u8-move unistr/u8-next unistr/u8-prev unistr/u8-set unistr/u8-startswith unistr/u8-stpcpy unistr/u8-stpncpy unistr/u8-strcat unistr/u8-strchr unistr/u8-strcmp unistr/u8-strcoll unistr/u8-strcpy unistr/u8-strcspn unistr/u8-strdup unistr/u8-strlen unistr/u8-strmblen unistr/u8-strmbtouc unistr/u8-strncat unistr/u8-strncmp unistr/u8-strncpy unistr/u8-strnlen unistr/u8-strpbrk unistr/u8-strrchr unistr/u8-strspn unistr/u8-strstr unistr/u8-strtok unistr/u8-to-u16 unistr/u8-to-u32 unistr/u8-uctomb unitypes uniwbrk/base uniwbrk/u16-wordbreaks uniwbrk/u32-wordbreaks uniwbrk/u8-wordbreaks uniwbrk/ulc-wordbreaks uniwbrk/wordbreak-property uniwidth/base uniwidth/u16-strwidth uniwidth/u16-width uniwidth/u32-strwidth uniwidth/u32-width uniwidth/u8-strwidth uniwidth/u8-width uniwidth/width
 
 # Specification in the form of a few gnulib-tool.m4 macro invocations:
 gl_LOCAL_DIR([gnulib-local])
@@ -53,6 +53,8 @@ gl_MODULES([
   unicase/u16-is-lowercase
   unicase/u16-is-titlecase
   unicase/u16-is-uppercase
+  unicase/u16-prefix-context
+  unicase/u16-suffix-context
   unicase/u16-tolower
   unicase/u16-totitle
   unicase/u16-toupper
@@ -69,6 +71,8 @@ gl_MODULES([
   unicase/u32-is-lowercase
   unicase/u32-is-titlecase
   unicase/u32-is-uppercase
+  unicase/u32-prefix-context
+  unicase/u32-suffix-context
   unicase/u32-tolower
   unicase/u32-totitle
   unicase/u32-toupper
@@ -85,6 +89,8 @@ gl_MODULES([
   unicase/u8-is-lowercase
   unicase/u8-is-titlecase
   unicase/u8-is-uppercase
+  unicase/u8-prefix-context
+  unicase/u8-suffix-context
   unicase/u8-tolower
   unicase/u8-totitle
   unicase/u8-toupper
diff --git a/gnulib-m4/gnulib-common.m4 b/gnulib-m4/gnulib-common.m4
index bea5a65..736e421 100644
--- a/gnulib-m4/gnulib-common.m4
+++ b/gnulib-m4/gnulib-common.m4
@@ -1,5 +1,5 @@
-# gnulib-common.m4 serial 38
-dnl Copyright (C) 2007-2017 Free Software Foundation, Inc.
+# gnulib-common.m4 serial 39
+dnl Copyright (C) 2007-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -72,6 +72,13 @@ AC_DEFUN([gl_COMMON_BODY], [
 #else
 # define _GL_ATTRIBUTE_CONST /* empty */
 #endif
+
+/* The __malloc__ attribute was added in gcc 3.  */
+#if 3 <= __GNUC__
+# define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__))
+#else
+# define _GL_ATTRIBUTE_MALLOC /* empty */
+#endif
 ])
   dnl Preparation for running test programs:
   dnl Tell glibc to write diagnostics from -D_FORTIFY_SOURCE=2 to stderr, not
diff --git a/gnulib-m4/gnulib-comp.m4 b/gnulib-m4/gnulib-comp.m4
index f30bc4a..b0f3e89 100644
--- a/gnulib-m4/gnulib-comp.m4
+++ b/gnulib-m4/gnulib-comp.m4
@@ -1,5 +1,5 @@
 # DO NOT EDIT! GENERATED AUTOMATICALLY!
-# Copyright (C) 2002-2017 Free Software Foundation, Inc.
+# Copyright (C) 2002-2018 Free Software Foundation, Inc.
 #
 # This file is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -258,6 +258,8 @@ AC_DEFUN([gl_EARLY],
   # Code from module unicase/u16-is-titlecase-tests:
   # Code from module unicase/u16-is-uppercase:
   # Code from module unicase/u16-is-uppercase-tests:
+  # Code from module unicase/u16-prefix-context:
+  # Code from module unicase/u16-suffix-context:
   # Code from module unicase/u16-tolower:
   # Code from module unicase/u16-tolower-tests:
   # Code from module unicase/u16-totitle:
@@ -287,6 +289,8 @@ AC_DEFUN([gl_EARLY],
   # Code from module unicase/u32-is-titlecase-tests:
   # Code from module unicase/u32-is-uppercase:
   # Code from module unicase/u32-is-uppercase-tests:
+  # Code from module unicase/u32-prefix-context:
+  # Code from module unicase/u32-suffix-context:
   # Code from module unicase/u32-tolower:
   # Code from module unicase/u32-tolower-tests:
   # Code from module unicase/u32-totitle:
@@ -316,6 +320,8 @@ AC_DEFUN([gl_EARLY],
   # Code from module unicase/u8-is-titlecase-tests:
   # Code from module unicase/u8-is-uppercase:
   # Code from module unicase/u8-is-uppercase-tests:
+  # Code from module unicase/u8-prefix-context:
+  # Code from module unicase/u8-suffix-context:
   # Code from module unicase/u8-tolower:
   # Code from module unicase/u8-tolower-tests:
   # Code from module unicase/u8-totitle:
@@ -1357,6 +1363,8 @@ AC_DEFUN([gl_INIT],
   gl_LIBUNISTRING_MODULE([0.9.8], [unicase/u16-is-lowercase])
   gl_LIBUNISTRING_MODULE([0.9.8], [unicase/u16-is-titlecase])
   gl_LIBUNISTRING_MODULE([0.9.8], [unicase/u16-is-uppercase])
+  gl_LIBUNISTRING_MODULE([0.9.10], [unicase/u16-prefix-context])
+  gl_LIBUNISTRING_MODULE([0.9.10], [unicase/u16-suffix-context])
   gl_LIBUNISTRING_MODULE([0.9.8], [unicase/u16-tolower])
   gl_LIBUNISTRING_MODULE([0.9.8], [unicase/u16-totitle])
   gl_LIBUNISTRING_MODULE([0.9.8], [unicase/u16-toupper])
@@ -1373,6 +1381,8 @@ AC_DEFUN([gl_INIT],
   gl_LIBUNISTRING_MODULE([0.9.8], [unicase/u32-is-lowercase])
   gl_LIBUNISTRING_MODULE([0.9.8], [unicase/u32-is-titlecase])
   gl_LIBUNISTRING_MODULE([0.9.8], [unicase/u32-is-uppercase])
+  gl_LIBUNISTRING_MODULE([0.9.10], [unicase/u32-prefix-context])
+  gl_LIBUNISTRING_MODULE([0.9.10], [unicase/u32-suffix-context])
   gl_LIBUNISTRING_MODULE([0.9.8], [unicase/u32-tolower])
   gl_LIBUNISTRING_MODULE([0.9.8], [unicase/u32-totitle])
   gl_LIBUNISTRING_MODULE([0.9.8], [unicase/u32-toupper])
@@ -1389,6 +1399,8 @@ AC_DEFUN([gl_INIT],
   gl_LIBUNISTRING_MODULE([0.9.8], [unicase/u8-is-lowercase])
   gl_LIBUNISTRING_MODULE([0.9.8], [unicase/u8-is-titlecase])
   gl_LIBUNISTRING_MODULE([0.9.8], [unicase/u8-is-uppercase])
+  gl_LIBUNISTRING_MODULE([0.9.10], [unicase/u8-prefix-context])
+  gl_LIBUNISTRING_MODULE([0.9.10], [unicase/u8-suffix-context])
   gl_LIBUNISTRING_MODULE([0.9.8], [unicase/u8-tolower])
   gl_LIBUNISTRING_MODULE([0.9.8], [unicase/u8-totitle])
   gl_LIBUNISTRING_MODULE([0.9.8], [unicase/u8-toupper])
@@ -2461,7 +2473,6 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/malloc.c
   lib/malloca.c
   lib/malloca.h
-  lib/malloca.valgrind
   lib/math.c
   lib/math.in.h
   lib/mbchar.c
@@ -2543,6 +2554,8 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/unicase/u-ct-totitle.h
   lib/unicase/u-is-cased.h
   lib/unicase/u-is-invariant.h
+  lib/unicase/u-prefix-context.h
+  lib/unicase/u-suffix-context.h
   lib/unicase/u-totitle.h
   lib/unicase/u16-casecmp.c
   lib/unicase/u16-casecoll.c
@@ -2559,6 +2572,8 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/unicase/u16-is-lowercase.c
   lib/unicase/u16-is-titlecase.c
   lib/unicase/u16-is-uppercase.c
+  lib/unicase/u16-prefix-context.c
+  lib/unicase/u16-suffix-context.c
   lib/unicase/u16-tolower.c
   lib/unicase/u16-totitle.c
   lib/unicase/u16-toupper.c
@@ -2577,6 +2592,8 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/unicase/u32-is-lowercase.c
   lib/unicase/u32-is-titlecase.c
   lib/unicase/u32-is-uppercase.c
+  lib/unicase/u32-prefix-context.c
+  lib/unicase/u32-suffix-context.c
   lib/unicase/u32-tolower.c
   lib/unicase/u32-totitle.c
   lib/unicase/u32-toupper.c
@@ -2595,6 +2612,8 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/unicase/u8-is-lowercase.c
   lib/unicase/u8-is-titlecase.c
   lib/unicase/u8-is-uppercase.c
+  lib/unicase/u8-prefix-context.c
+  lib/unicase/u8-suffix-context.c
   lib/unicase/u8-tolower.c
   lib/unicase/u8-totitle.c
   lib/unicase/u8-toupper.c
@@ -3418,6 +3437,7 @@ AC_DEFUN([gl_FILE_LIST], [
   m4/xalloc.m4
   m4/xsize.m4
   m4/yield.m4
+  tests/iconvsupport.c
   tests/infinity.h
   tests/init.sh
   tests/macros.h
@@ -3484,6 +3504,7 @@ AC_DEFUN([gl_FILE_LIST], [
   tests/test-mbsinit.c
   tests/test-mbsinit.sh
   tests/test-memchr.c
+  tests/test-once.c
   tests/test-printf-frexp.c
   tests/test-printf-frexpl.c
   tests/test-pthread_sigmask1.c
diff --git a/gnulib-m4/hard-locale.m4 b/gnulib-m4/hard-locale.m4
index d79acd6..1922223 100644
--- a/gnulib-m4/hard-locale.m4
+++ b/gnulib-m4/hard-locale.m4
@@ -1,5 +1,5 @@
 # hard-locale.m4 serial 8
-dnl Copyright (C) 2002-2006, 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/host-cpu-c-abi.m4 b/gnulib-m4/host-cpu-c-abi.m4
index 9370c31..3fac6f7 100644
--- a/gnulib-m4/host-cpu-c-abi.m4
+++ b/gnulib-m4/host-cpu-c-abi.m4
@@ -1,5 +1,5 @@
-# host-cpu-c-abi.m4 serial 8
-dnl Copyright (C) 2002-2017 Free Software Foundation, Inc.
+# host-cpu-c-abi.m4 serial 10
+dnl Copyright (C) 2002-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -135,7 +135,7 @@ changequote([,])dnl
             echo 'double ddd; void func (double dd) { ddd = dd; }' > conftest.c
             # Look for a reference to the register d0 in the .s file.
             AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS $gl_c_asm_opt conftest.c) >/dev/null 2>&1
-            if LC_ALL=C grep -E 'd0,' conftest.$gl_asmext >/dev/null; then
+            if LC_ALL=C grep 'd0,' conftest.$gl_asmext >/dev/null; then
               gl_cv_host_cpu_c_abi=armhf
             else
               gl_cv_host_cpu_c_abi=arm
@@ -237,6 +237,60 @@ changequote([,])dnl
          gl_cv_host_cpu_c_abi=powerpc
          ;;
 
+       riscv32 | riscv64 )
+         # There are 2 architectures (with variants): rv32* and rv64*.
+         AC_COMPILE_IFELSE(
+           [AC_LANG_SOURCE(
+              [[#if __riscv_xlen == 64
+                  int ok;
+                #else
+                  error fail
+                #endif
+              ]])],
+           [cpu=riscv64],
+           [cpu=riscv32])
+         # There are 6 ABIs: ilp32, ilp32f, ilp32d, lp64, lp64f, lp64d.
+         # Size of 'long' and 'void *':
+         AC_COMPILE_IFELSE(
+           [AC_LANG_SOURCE(
+              [[#if defined __LP64__
+                  int ok;
+                #else
+                  error fail
+                #endif
+              ]])],
+           [main_abi=lp64],
+           [main_abi=ilp32])
+         # Float ABIs:
+         # __riscv_float_abi_double:
+         #   'float' and 'double' are passed in floating-point registers.
+         # __riscv_float_abi_single:
+         #   'float' are passed in floating-point registers.
+         # __riscv_float_abi_soft:
+         #   No values are passed in floating-point registers.
+         AC_COMPILE_IFELSE(
+           [AC_LANG_SOURCE(
+              [[#if defined __riscv_float_abi_double
+                  int ok;
+                #else
+                  error fail
+                #endif
+              ]])],
+           [float_abi=d],
+           [AC_COMPILE_IFELSE(
+              [AC_LANG_SOURCE(
+                 [[#if defined __riscv_float_abi_single
+                     int ok;
+                   #else
+                     error fail
+                   #endif
+                 ]])],
+              [float_abi=f],
+              [float_abi=''])
+           ])
+         gl_cv_host_cpu_c_abi="${cpu}-${main_abi}${float_abi}"
+         ;;
+
        s390* )
          # On s390x, the C compiler may be generating 64-bit (= s390x) code
          # or 31-bit (= s390) code.
@@ -349,6 +403,39 @@ EOF
 #ifndef __powerpc64_elfv2__
 #undef __powerpc64_elfv2__
 #endif
+#ifndef __riscv32__
+#undef __riscv32__
+#endif
+#ifndef __riscv64__
+#undef __riscv64__
+#endif
+#ifndef __riscv32_ilp32__
+#undef __riscv32_ilp32__
+#endif
+#ifndef __riscv32_ilp32f__
+#undef __riscv32_ilp32f__
+#endif
+#ifndef __riscv32_ilp32d__
+#undef __riscv32_ilp32d__
+#endif
+#ifndef __riscv64_ilp32__
+#undef __riscv64_ilp32__
+#endif
+#ifndef __riscv64_ilp32f__
+#undef __riscv64_ilp32f__
+#endif
+#ifndef __riscv64_ilp32d__
+#undef __riscv64_ilp32d__
+#endif
+#ifndef __riscv64_lp64__
+#undef __riscv64_lp64__
+#endif
+#ifndef __riscv64_lp64f__
+#undef __riscv64_lp64f__
+#endif
+#ifndef __riscv64_lp64d__
+#undef __riscv64_lp64d__
+#endif
 #ifndef __s390__
 #undef __s390__
 #endif
diff --git a/gnulib-m4/iconv.m4 b/gnulib-m4/iconv.m4
index b33ecd0..877d882 100644
--- a/gnulib-m4/iconv.m4
+++ b/gnulib-m4/iconv.m4
@@ -1,5 +1,6 @@
 # iconv.m4 serial 21
-dnl Copyright (C) 2000-2002, 2007-2014, 2016-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2000-2002, 2007-2014, 2016-2018 Free Software Foundation,
+dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/iconv_h.m4 b/gnulib-m4/iconv_h.m4
index d4ac243..824f90c 100644
--- a/gnulib-m4/iconv_h.m4
+++ b/gnulib-m4/iconv_h.m4
@@ -1,5 +1,5 @@
 # iconv_h.m4 serial 8
-dnl Copyright (C) 2007-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/iconv_open.m4 b/gnulib-m4/iconv_open.m4
index 2517a5b..818a0c4 100644
--- a/gnulib-m4/iconv_open.m4
+++ b/gnulib-m4/iconv_open.m4
@@ -1,5 +1,5 @@
 # iconv_open.m4 serial 14
-dnl Copyright (C) 2007-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/include_next.m4 b/gnulib-m4/include_next.m4
index 068f6f6..a363cb0 100644
--- a/gnulib-m4/include_next.m4
+++ b/gnulib-m4/include_next.m4
@@ -1,5 +1,5 @@
 # include_next.m4 serial 24
-dnl Copyright (C) 2006-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/inline.m4 b/gnulib-m4/inline.m4
index f00572e..52f2b7b 100644
--- a/gnulib-m4/inline.m4
+++ b/gnulib-m4/inline.m4
@@ -1,5 +1,5 @@
 # inline.m4 serial 4
-dnl Copyright (C) 2006, 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/intmax_t.m4 b/gnulib-m4/intmax_t.m4
index ff143e9..7ab676e 100644
--- a/gnulib-m4/intmax_t.m4
+++ b/gnulib-m4/intmax_t.m4
@@ -1,5 +1,5 @@
 # intmax_t.m4 serial 8
-dnl Copyright (C) 1997-2004, 2006-2007, 2009-2017 Free Software Foundation,
+dnl Copyright (C) 1997-2004, 2006-2007, 2009-2018 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/gnulib-m4/inttypes-pri.m4 b/gnulib-m4/inttypes-pri.m4
index 2055787..c844262 100644
--- a/gnulib-m4/inttypes-pri.m4
+++ b/gnulib-m4/inttypes-pri.m4
@@ -1,5 +1,5 @@
 # inttypes-pri.m4 serial 7 (gettext-0.18.2)
-dnl Copyright (C) 1997-2002, 2006, 2008-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 1997-2002, 2006, 2008-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/inttypes.m4 b/gnulib-m4/inttypes.m4
index 434a7ee..d756f01 100644
--- a/gnulib-m4/inttypes.m4
+++ b/gnulib-m4/inttypes.m4
@@ -1,5 +1,5 @@
-# inttypes.m4 serial 26
-dnl Copyright (C) 2006-2017 Free Software Foundation, Inc.
+# inttypes.m4 serial 27
+dnl Copyright (C) 2006-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -147,6 +147,7 @@ AC_DEFUN([gl_INTTYPES_H_DEFAULTS],
   HAVE_DECL_IMAXDIV=1;   AC_SUBST([HAVE_DECL_IMAXDIV])
   HAVE_DECL_STRTOIMAX=1; AC_SUBST([HAVE_DECL_STRTOIMAX])
   HAVE_DECL_STRTOUMAX=1; AC_SUBST([HAVE_DECL_STRTOUMAX])
+  HAVE_IMAXDIV_T=1;      AC_SUBST([HAVE_IMAXDIV_T])
   REPLACE_STRTOIMAX=0;   AC_SUBST([REPLACE_STRTOIMAX])
   REPLACE_STRTOUMAX=0;   AC_SUBST([REPLACE_STRTOUMAX])
   INT32_MAX_LT_INTMAX_MAX=1;  AC_SUBST([INT32_MAX_LT_INTMAX_MAX])
diff --git a/gnulib-m4/inttypes_h.m4 b/gnulib-m4/inttypes_h.m4
index 9240305..954848b 100644
--- a/gnulib-m4/inttypes_h.m4
+++ b/gnulib-m4/inttypes_h.m4
@@ -1,5 +1,5 @@
 # inttypes_h.m4 serial 10
-dnl Copyright (C) 1997-2004, 2006, 2008-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 1997-2004, 2006, 2008-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/isblank.m4 b/gnulib-m4/isblank.m4
index abbc338..f98dfbf 100644
--- a/gnulib-m4/isblank.m4
+++ b/gnulib-m4/isblank.m4
@@ -1,5 +1,5 @@
 # isblank.m4 serial 3
-dnl Copyright (C) 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/isnand.m4 b/gnulib-m4/isnand.m4
index cbe6a38..03da55d 100644
--- a/gnulib-m4/isnand.m4
+++ b/gnulib-m4/isnand.m4
@@ -1,5 +1,5 @@
 # isnand.m4 serial 11
-dnl Copyright (C) 2007-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/isnanf.m4 b/gnulib-m4/isnanf.m4
index 856234a..c0dcdb7 100644
--- a/gnulib-m4/isnanf.m4
+++ b/gnulib-m4/isnanf.m4
@@ -1,5 +1,5 @@
 # isnanf.m4 serial 15
-dnl Copyright (C) 2007-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/isnanl.m4 b/gnulib-m4/isnanl.m4
index 9578d2d..74014d6 100644
--- a/gnulib-m4/isnanl.m4
+++ b/gnulib-m4/isnanl.m4
@@ -1,5 +1,5 @@
 # isnanl.m4 serial 20
-dnl Copyright (C) 2007-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/iswblank.m4 b/gnulib-m4/iswblank.m4
index e9d6975..4906a47 100644
--- a/gnulib-m4/iswblank.m4
+++ b/gnulib-m4/iswblank.m4
@@ -1,5 +1,5 @@
 # iswblank.m4 serial 4
-dnl Copyright (C) 2011-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/langinfo_h.m4 b/gnulib-m4/langinfo_h.m4
index ea94b4e..de077c3 100644
--- a/gnulib-m4/langinfo_h.m4
+++ b/gnulib-m4/langinfo_h.m4
@@ -1,5 +1,5 @@
-# langinfo_h.m4 serial 7
-dnl Copyright (C) 2009-2017 Free Software Foundation, Inc.
+# langinfo_h.m4 serial 8
+dnl Copyright (C) 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -17,6 +17,7 @@ AC_DEFUN([gl_LANGINFO_H],
   dnl Determine whether <langinfo.h> exists. It is missing on mingw and BeOS.
   HAVE_LANGINFO_CODESET=0
   HAVE_LANGINFO_T_FMT_AMPM=0
+  HAVE_LANGINFO_ALTMON=0
   HAVE_LANGINFO_ERA=0
   HAVE_LANGINFO_YESEXPR=0
   AC_CHECK_HEADERS_ONCE([langinfo.h])
@@ -24,6 +25,7 @@ AC_DEFUN([gl_LANGINFO_H],
     HAVE_LANGINFO_H=1
     dnl Determine what <langinfo.h> defines. CODESET and ERA etc. are missing
     dnl on OpenBSD 3.8. T_FMT_AMPM and YESEXPR, NOEXPR are missing on IRIX 5.3.
+    dnl ALTMON_* are missing on glibc 2.26 and many other systems.
     AC_CACHE_CHECK([whether langinfo.h defines CODESET],
       [gl_cv_header_langinfo_codeset],
       [AC_COMPILE_IFELSE(
@@ -48,6 +50,18 @@ int a = T_FMT_AMPM;
     if test $gl_cv_header_langinfo_t_fmt_ampm = yes; then
       HAVE_LANGINFO_T_FMT_AMPM=1
     fi
+    AC_CACHE_CHECK([whether langinfo.h defines ALTMON_1],
+      [gl_cv_header_langinfo_altmon],
+      [AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM([[#include <langinfo.h>
+int a = ALTMON_1;
+]])],
+         [gl_cv_header_langinfo_altmon=yes],
+         [gl_cv_header_langinfo_altmon=no])
+      ])
+    if test $gl_cv_header_langinfo_altmon = yes; then
+      HAVE_LANGINFO_ALTMON=1
+    fi
     AC_CACHE_CHECK([whether langinfo.h defines ERA],
       [gl_cv_header_langinfo_era],
       [AC_COMPILE_IFELSE(
@@ -78,6 +92,7 @@ int a = YESEXPR;
   AC_SUBST([HAVE_LANGINFO_H])
   AC_SUBST([HAVE_LANGINFO_CODESET])
   AC_SUBST([HAVE_LANGINFO_T_FMT_AMPM])
+  AC_SUBST([HAVE_LANGINFO_ALTMON])
   AC_SUBST([HAVE_LANGINFO_ERA])
   AC_SUBST([HAVE_LANGINFO_YESEXPR])
 
diff --git a/gnulib-m4/ldexpl.m4 b/gnulib-m4/ldexpl.m4
index 5989b99..744dede 100644
--- a/gnulib-m4/ldexpl.m4
+++ b/gnulib-m4/ldexpl.m4
@@ -1,5 +1,5 @@
 # ldexpl.m4 serial 17
-dnl Copyright (C) 2007-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/lib-ld.m4 b/gnulib-m4/lib-ld.m4
index 0f0c599..1244ff8 100644
--- a/gnulib-m4/lib-ld.m4
+++ b/gnulib-m4/lib-ld.m4
@@ -1,5 +1,5 @@
 # lib-ld.m4 serial 9
-dnl Copyright (C) 1996-2003, 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 1996-2003, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/lib-link.m4 b/gnulib-m4/lib-link.m4
index 1ce9a5a..df77db9 100644
--- a/gnulib-m4/lib-link.m4
+++ b/gnulib-m4/lib-link.m4
@@ -1,5 +1,5 @@
 # lib-link.m4 serial 26 (gettext-0.18.2)
-dnl Copyright (C) 2001-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2001-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -211,7 +211,7 @@ AC_DEFUN([AC_LIB_LINKFLAGS_BODY],
         additional_includedir="$withval/include"
         additional_libdir="$withval/$acl_libdirstem"
         if test "$acl_libdirstem2" != "$acl_libdirstem" \
-           && ! test -d "$withval/$acl_libdirstem"; then
+           && test ! -d "$withval/$acl_libdirstem"; then
           additional_libdir="$withval/$acl_libdirstem2"
         fi
       fi
diff --git a/gnulib-m4/lib-prefix.m4 b/gnulib-m4/lib-prefix.m4
index 9fc47a1..16b26fb 100644
--- a/gnulib-m4/lib-prefix.m4
+++ b/gnulib-m4/lib-prefix.m4
@@ -1,5 +1,5 @@
 # lib-prefix.m4 serial 11
-dnl Copyright (C) 2001-2005, 2008-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2001-2005, 2008-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/libunistring-base.m4 b/gnulib-m4/libunistring-base.m4
index ee648f2..1587f36 100644
--- a/gnulib-m4/libunistring-base.m4
+++ b/gnulib-m4/libunistring-base.m4
@@ -1,5 +1,5 @@
 # libunistring-base.m4 serial 5
-dnl Copyright (C) 2010-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/limits-h.m4 b/gnulib-m4/limits-h.m4
index 443f91b..511dcef 100644
--- a/gnulib-m4/limits-h.m4
+++ b/gnulib-m4/limits-h.m4
@@ -1,6 +1,6 @@
 dnl Check whether limits.h has needed features.
 
-dnl Copyright 2016-2017 Free Software Foundation, Inc.
+dnl Copyright 2016-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/localcharset.m4 b/gnulib-m4/localcharset.m4
index 0c1ff38..2d7ca64 100644
--- a/gnulib-m4/localcharset.m4
+++ b/gnulib-m4/localcharset.m4
@@ -1,5 +1,5 @@
 # localcharset.m4 serial 7
-dnl Copyright (C) 2002, 2004, 2006, 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2004, 2006, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/locale-ar.m4 b/gnulib-m4/locale-ar.m4
index 0cf8397..ee386b9 100644
--- a/gnulib-m4/locale-ar.m4
+++ b/gnulib-m4/locale-ar.m4
@@ -1,5 +1,5 @@
-# locale-ar.m4 serial 7
-dnl Copyright (C) 2003, 2005-2017 Free Software Foundation, Inc.
+# locale-ar.m4 serial 8
+dnl Copyright (C) 2003, 2005-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -31,7 +31,7 @@ int main () {
   return 1;
 #else
   /* Check whether the given locale name is recognized by the system.  */
-# if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
+# if defined _WIN32 && !defined __CYGWIN__
   /* On native Windows, setlocale(category, "") looks at the system settings,
      not at the environment variables.  Also, when an encoding suffix such
      as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
diff --git a/gnulib-m4/locale-fr.m4 b/gnulib-m4/locale-fr.m4
index d974b03..a37a0d2 100644
--- a/gnulib-m4/locale-fr.m4
+++ b/gnulib-m4/locale-fr.m4
@@ -1,5 +1,5 @@
-# locale-fr.m4 serial 18
-dnl Copyright (C) 2003, 2005-2017 Free Software Foundation, Inc.
+# locale-fr.m4 serial 19
+dnl Copyright (C) 2003, 2005-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -31,7 +31,7 @@ int main () {
   return 1;
 #else
   /* Check whether the given locale name is recognized by the system.  */
-# if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
+# if defined _WIN32 && !defined __CYGWIN__
   /* On native Windows, setlocale(category, "") looks at the system settings,
      not at the environment variables.  Also, when an encoding suffix such
      as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
@@ -160,7 +160,7 @@ int main () {
      variables, and all locales use the UTF-8 encoding.  */
 #if !(defined __BEOS__ || defined __HAIKU__)
   /* Check whether the given locale name is recognized by the system.  */
-# if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
+# if defined _WIN32 && !defined __CYGWIN__
   /* On native Windows, setlocale(category, "") looks at the system settings,
      not at the environment variables.  Also, when an encoding suffix such
      as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
diff --git a/gnulib-m4/locale-ja.m4 b/gnulib-m4/locale-ja.m4
index 48d18d6..9f16231 100644
--- a/gnulib-m4/locale-ja.m4
+++ b/gnulib-m4/locale-ja.m4
@@ -1,5 +1,5 @@
-# locale-ja.m4 serial 13
-dnl Copyright (C) 2003, 2005-2017 Free Software Foundation, Inc.
+# locale-ja.m4 serial 14
+dnl Copyright (C) 2003, 2005-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -32,7 +32,7 @@ int main ()
   return 1;
 #else
   /* Check whether the given locale name is recognized by the system.  */
-# if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
+# if defined _WIN32 && !defined __CYGWIN__
   /* On native Windows, setlocale(category, "") looks at the system settings,
      not at the environment variables.  Also, when an encoding suffix such
      as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
diff --git a/gnulib-m4/locale-tr.m4 b/gnulib-m4/locale-tr.m4
index 06e2f6e..2f2cf47 100644
--- a/gnulib-m4/locale-tr.m4
+++ b/gnulib-m4/locale-tr.m4
@@ -1,5 +1,5 @@
-# locale-tr.m4 serial 10
-dnl Copyright (C) 2003, 2005-2017 Free Software Foundation, Inc.
+# locale-tr.m4 serial 11
+dnl Copyright (C) 2003, 2005-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -30,7 +30,7 @@ int main () {
      implement the Turkish upper-/lowercase mappings.  Therefore, let this
      program return 1 on BeOS.  */
   /* Check whether the given locale name is recognized by the system.  */
-#if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
+#if defined _WIN32 && !defined __CYGWIN__
   /* On native Windows, setlocale(category, "") looks at the system settings,
      not at the environment variables.  Also, when an encoding suffix such
      as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
diff --git a/gnulib-m4/locale-zh.m4 b/gnulib-m4/locale-zh.m4
index 5fb7f53..cfb447f 100644
--- a/gnulib-m4/locale-zh.m4
+++ b/gnulib-m4/locale-zh.m4
@@ -1,5 +1,5 @@
-# locale-zh.m4 serial 13
-dnl Copyright (C) 2003, 2005-2017 Free Software Foundation, Inc.
+# locale-zh.m4 serial 14
+dnl Copyright (C) 2003, 2005-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -33,7 +33,7 @@ int main ()
   return 1;
 #else
   /* Check whether the given locale name is recognized by the system.  */
-# if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
+# if defined _WIN32 && !defined __CYGWIN__
   /* On native Windows, setlocale(category, "") looks at the system settings,
      not at the environment variables.  Also, when an encoding suffix such
      as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
diff --git a/gnulib-m4/locale_h.m4 b/gnulib-m4/locale_h.m4
index db005a5..4bd9e57 100644
--- a/gnulib-m4/locale_h.m4
+++ b/gnulib-m4/locale_h.m4
@@ -1,5 +1,5 @@
 # locale_h.m4 serial 20
-dnl Copyright (C) 2007, 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/localename.m4 b/gnulib-m4/localename.m4
index bb42516..a0e1367 100644
--- a/gnulib-m4/localename.m4
+++ b/gnulib-m4/localename.m4
@@ -1,5 +1,5 @@
-# localename.m4 serial 2
-dnl Copyright (C) 2007, 2009-2017 Free Software Foundation, Inc.
+# localename.m4 serial 3
+dnl Copyright (C) 2007, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -8,6 +8,7 @@ AC_DEFUN([gl_LOCALENAME],
 [
   AC_REQUIRE([gt_LC_MESSAGES])
   AC_REQUIRE([gt_INTL_MACOSX])
+  AC_CHECK_HEADERS_ONCE([langinfo.h])
   AC_CHECK_FUNCS([setlocale uselocale])
   dnl Solaris 12 provides getlocalename_l, while Illumos doesn't have
   dnl it nor the equivalent.
diff --git a/gnulib-m4/lock.m4 b/gnulib-m4/lock.m4
index cb04a67..dac4c38 100644
--- a/gnulib-m4/lock.m4
+++ b/gnulib-m4/lock.m4
@@ -1,5 +1,5 @@
 # lock.m4 serial 14
-dnl Copyright (C) 2005-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/longlong.m4 b/gnulib-m4/longlong.m4
index 9a3294b..27e6326 100644
--- a/gnulib-m4/longlong.m4
+++ b/gnulib-m4/longlong.m4
@@ -1,5 +1,5 @@
 # longlong.m4 serial 17
-dnl Copyright (C) 1999-2007, 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 1999-2007, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/malloc.m4 b/gnulib-m4/malloc.m4
index 5e6a83a..4c182b4 100644
--- a/gnulib-m4/malloc.m4
+++ b/gnulib-m4/malloc.m4
@@ -1,5 +1,5 @@
-# malloc.m4 serial 15
-dnl Copyright (C) 2007, 2009-2017 Free Software Foundation, Inc.
+# malloc.m4 serial 17
+dnl Copyright (C) 2007, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -32,7 +32,7 @@ AC_DEFUN([_AC_FUNC_MALLOC_IF],
        [ac_cv_func_malloc_0_nonnull=no],
        [case "$host_os" in
           # Guess yes on platforms where we know the result.
-          *-gnu* | freebsd* | netbsd* | openbsd* \
+          *-gnu* | gnu* | freebsd* | netbsd* | openbsd* \
           | hpux* | solaris* | cygwin* | mingw*)
             ac_cv_func_malloc_0_nonnull=yes ;;
           # If we don't know, assume the worst.
@@ -91,7 +91,7 @@ AC_DEFUN([gl_CHECK_MALLOC_POSIX],
       AC_COMPILE_IFELSE(
         [AC_LANG_PROGRAM(
            [[]],
-           [[#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+           [[#if defined _WIN32 && ! defined __CYGWIN__
              choke me
              #endif
             ]])],
diff --git a/gnulib-m4/malloca.m4 b/gnulib-m4/malloca.m4
index 6956baf..2251e61 100644
--- a/gnulib-m4/malloca.m4
+++ b/gnulib-m4/malloca.m4
@@ -1,5 +1,5 @@
 # malloca.m4 serial 1
-dnl Copyright (C) 2003-2004, 2006-2007, 2009-2017 Free Software Foundation,
+dnl Copyright (C) 2003-2004, 2006-2007, 2009-2018 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/gnulib-m4/math_h.m4 b/gnulib-m4/math_h.m4
index b9a432e..d0c7ed1 100644
--- a/gnulib-m4/math_h.m4
+++ b/gnulib-m4/math_h.m4
@@ -1,5 +1,5 @@
 # math_h.m4 serial 116
-dnl Copyright (C) 2007-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/mbchar.m4 b/gnulib-m4/mbchar.m4
index 60ea124..2ecb4d4 100644
--- a/gnulib-m4/mbchar.m4
+++ b/gnulib-m4/mbchar.m4
@@ -1,5 +1,5 @@
 # mbchar.m4 serial 9
-dnl Copyright (C) 2005-2007, 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2007, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/mbiter.m4 b/gnulib-m4/mbiter.m4
index add4034..8ffa6f4 100644
--- a/gnulib-m4/mbiter.m4
+++ b/gnulib-m4/mbiter.m4
@@ -1,5 +1,5 @@
 # mbiter.m4 serial 7
-dnl Copyright (C) 2005, 2008-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2008-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/mbrtowc.m4 b/gnulib-m4/mbrtowc.m4
index 216594e..f789875 100644
--- a/gnulib-m4/mbrtowc.m4
+++ b/gnulib-m4/mbrtowc.m4
@@ -1,5 +1,5 @@
-# mbrtowc.m4 serial 29  -*- coding: utf-8 -*-
-dnl Copyright (C) 2001-2002, 2004-2005, 2008-2017 Free Software Foundation,
+# mbrtowc.m4 serial 30  -*- coding: utf-8 -*-
+dnl Copyright (C) 2001-2002, 2004-2005, 2008-2018 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -563,12 +563,11 @@ AC_DEFUN([gl_MBRTOWC_EMPTY_INPUT],
       dnl is present.
 changequote(,)dnl
       case "$host_os" in
-                    # Guess no on AIX and glibc systems.
-        aix* | *-gnu*)
-                    gl_cv_func_mbrtowc_empty_input="guessing no" ;;
-                    # Guess yes on native Windows.
-        mingw*)     gl_cv_func_mbrtowc_empty_input="guessing yes" ;;
-        *)          gl_cv_func_mbrtowc_empty_input="guessing yes" ;;
+                              # Guess no on AIX and glibc systems.
+        aix* | *-gnu* | gnu*) gl_cv_func_mbrtowc_empty_input="guessing no" ;;
+                              # Guess yes on native Windows.
+        mingw*)               gl_cv_func_mbrtowc_empty_input="guessing yes" ;;
+        *)                    gl_cv_func_mbrtowc_empty_input="guessing yes" ;;
       esac
 changequote([,])dnl
       AC_RUN_IFELSE(
diff --git a/gnulib-m4/mbsinit.m4 b/gnulib-m4/mbsinit.m4
index 5904a51..5cba3df 100644
--- a/gnulib-m4/mbsinit.m4
+++ b/gnulib-m4/mbsinit.m4
@@ -1,5 +1,5 @@
 # mbsinit.m4 serial 8
-dnl Copyright (C) 2008, 2010-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2008, 2010-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/mbstate_t.m4 b/gnulib-m4/mbstate_t.m4
index 6325cf3..004aa0d 100644
--- a/gnulib-m4/mbstate_t.m4
+++ b/gnulib-m4/mbstate_t.m4
@@ -1,5 +1,5 @@
 # mbstate_t.m4 serial 13
-dnl Copyright (C) 2000-2002, 2008-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2000-2002, 2008-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/mbtowc.m4 b/gnulib-m4/mbtowc.m4
index 378a4e2..ecac6a2 100644
--- a/gnulib-m4/mbtowc.m4
+++ b/gnulib-m4/mbtowc.m4
@@ -1,5 +1,5 @@
 # mbtowc.m4 serial 2
-dnl Copyright (C) 2011-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/memchr.m4 b/gnulib-m4/memchr.m4
index 0cca69d..83c65c1 100644
--- a/gnulib-m4/memchr.m4
+++ b/gnulib-m4/memchr.m4
@@ -1,5 +1,5 @@
 # memchr.m4 serial 13
-dnl Copyright (C) 2002-2004, 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2004, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/minmax.m4 b/gnulib-m4/minmax.m4
index 6845fce..5e88508 100644
--- a/gnulib-m4/minmax.m4
+++ b/gnulib-m4/minmax.m4
@@ -1,5 +1,5 @@
 # minmax.m4 serial 4
-dnl Copyright (C) 2005, 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/mmap-anon.m4 b/gnulib-m4/mmap-anon.m4
index 263687d..55fea82 100644
--- a/gnulib-m4/mmap-anon.m4
+++ b/gnulib-m4/mmap-anon.m4
@@ -1,5 +1,5 @@
 # mmap-anon.m4 serial 10
-dnl Copyright (C) 2005, 2007, 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2007, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/msvc-inval.m4 b/gnulib-m4/msvc-inval.m4
index 3324375..55baeec 100644
--- a/gnulib-m4/msvc-inval.m4
+++ b/gnulib-m4/msvc-inval.m4
@@ -1,5 +1,5 @@
 # msvc-inval.m4 serial 1
-dnl Copyright (C) 2011-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/msvc-nothrow.m4 b/gnulib-m4/msvc-nothrow.m4
index 3014661..74ae427 100644
--- a/gnulib-m4/msvc-nothrow.m4
+++ b/gnulib-m4/msvc-nothrow.m4
@@ -1,5 +1,5 @@
 # msvc-nothrow.m4 serial 1
-dnl Copyright (C) 2011-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/multiarch.m4 b/gnulib-m4/multiarch.m4
index 30006cb..38a11cc 100644
--- a/gnulib-m4/multiarch.m4
+++ b/gnulib-m4/multiarch.m4
@@ -1,5 +1,5 @@
 # multiarch.m4 serial 7
-dnl Copyright (C) 2008-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/nocrash.m4 b/gnulib-m4/nocrash.m4
index 2c2c5fb..4914007 100644
--- a/gnulib-m4/nocrash.m4
+++ b/gnulib-m4/nocrash.m4
@@ -1,5 +1,5 @@
-# nocrash.m4 serial 4
-dnl Copyright (C) 2005, 2009-2017 Free Software Foundation, Inc.
+# nocrash.m4 serial 5
+dnl Copyright (C) 2005, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -79,7 +79,7 @@ nocrash_init (void)
     }
   }
 }
-#elif (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+#elif defined _WIN32 && ! defined __CYGWIN__
 /* Avoid a crash on native Windows.  */
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
diff --git a/gnulib-m4/off_t.m4 b/gnulib-m4/off_t.m4
index 92c45ef..f4d5787 100644
--- a/gnulib-m4/off_t.m4
+++ b/gnulib-m4/off_t.m4
@@ -1,5 +1,5 @@
 # off_t.m4 serial 1
-dnl Copyright (C) 2012-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/printf-frexp.m4 b/gnulib-m4/printf-frexp.m4
index 1e2881c..e730825 100644
--- a/gnulib-m4/printf-frexp.m4
+++ b/gnulib-m4/printf-frexp.m4
@@ -1,5 +1,5 @@
 # printf-frexp.m4 serial 5
-dnl Copyright (C) 2007, 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/printf-frexpl.m4 b/gnulib-m4/printf-frexpl.m4
index 5c20f3d..cb8ac45 100644
--- a/gnulib-m4/printf-frexpl.m4
+++ b/gnulib-m4/printf-frexpl.m4
@@ -1,5 +1,5 @@
 # printf-frexpl.m4 serial 10
-dnl Copyright (C) 2007, 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/printf.m4 b/gnulib-m4/printf.m4
index 3b167ec..82f48bf 100644
--- a/gnulib-m4/printf.m4
+++ b/gnulib-m4/printf.m4
@@ -1,5 +1,5 @@
-# printf.m4 serial 57
-dnl Copyright (C) 2003, 2007-2017 Free Software Foundation, Inc.
+# printf.m4 serial 58
+dnl Copyright (C) 2003, 2007-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -61,7 +61,7 @@ int main ()
          case "$host_os" in
 changequote(,)dnl
                                  # Guess yes on glibc systems.
-           *-gnu*)               gl_cv_func_printf_sizes_c99="guessing yes";;
+           *-gnu* | gnu*)        gl_cv_func_printf_sizes_c99="guessing yes";;
                                  # Guess yes on FreeBSD >= 5.
            freebsd[1-4].*)       gl_cv_func_printf_sizes_c99="guessing no";;
            freebsd* | kfreebsd*) gl_cv_func_printf_sizes_c99="guessing yes";;
@@ -234,7 +234,7 @@ int main ()
          case "$host_os" in
 changequote(,)dnl
                                  # Guess yes on glibc systems.
-           *-gnu*)               gl_cv_func_printf_infinite="guessing yes";;
+           *-gnu* | gnu*)        gl_cv_func_printf_infinite="guessing yes";;
                                  # Guess yes on FreeBSD >= 6.
            freebsd[1-5].*)       gl_cv_func_printf_infinite="guessing no";;
            freebsd* | kfreebsd*) gl_cv_func_printf_infinite="guessing yes";;
@@ -449,7 +449,7 @@ int main ()
                  case "$host_os" in
 changequote(,)dnl
                                          # Guess yes on glibc systems.
-                   *-gnu*)               gl_cv_func_printf_infinite_long_double="guessing yes";;
+                   *-gnu* | gnu*)        gl_cv_func_printf_infinite_long_double="guessing yes";;
                                          # Guess yes on FreeBSD >= 6.
                    freebsd[1-5].*)       gl_cv_func_printf_infinite_long_double="guessing no";;
                    freebsd* | kfreebsd*) gl_cv_func_printf_infinite_long_double="guessing yes";;
@@ -554,7 +554,7 @@ int main ()
         [
          case "$host_os" in
                                  # Guess yes on glibc >= 2.5 systems.
-           *-gnu*)
+           *-gnu* | gnu*)
              AC_EGREP_CPP([BZ2908], [
                #include <features.h>
                #ifdef __GNU_LIBRARY__
@@ -613,7 +613,7 @@ int main ()
          case "$host_os" in
 changequote(,)dnl
                                  # Guess yes on glibc systems.
-           *-gnu*)               gl_cv_func_printf_directive_f="guessing yes";;
+           *-gnu* | gnu*)        gl_cv_func_printf_directive_f="guessing yes";;
                                  # Guess yes on FreeBSD >= 6.
            freebsd[1-5].*)       gl_cv_func_printf_directive_f="guessing no";;
            freebsd* | kfreebsd*) gl_cv_func_printf_directive_f="guessing yes";;
@@ -935,14 +935,14 @@ int main ()
         [
 changequote(,)dnl
          case "$host_os" in
-                   # Guess yes on glibc systems.
-           *-gnu*) gl_cv_func_printf_flag_zero="guessing yes";;
-                   # Guess yes on BeOS.
-           beos*)  gl_cv_func_printf_flag_zero="guessing yes";;
-                   # Guess no on native Windows.
-           mingw*) gl_cv_func_printf_flag_zero="guessing no";;
-                   # If we don't know, assume the worst.
-           *)      gl_cv_func_printf_flag_zero="guessing no";;
+                          # Guess yes on glibc systems.
+           *-gnu* | gnu*) gl_cv_func_printf_flag_zero="guessing yes";;
+                          # Guess yes on BeOS.
+           beos*)         gl_cv_func_printf_flag_zero="guessing yes";;
+                          # Guess no on native Windows.
+           mingw*)        gl_cv_func_printf_flag_zero="guessing no";;
+                          # If we don't know, assume the worst.
+           *)             gl_cv_func_printf_flag_zero="guessing no";;
          esac
 changequote([,])dnl
         ])
@@ -1095,28 +1095,28 @@ changequote([,])dnl
       if test "$gl_cv_func_printf_enomem" = "guessing no"; then
 changequote(,)dnl
         case "$host_os" in
-                    # Guess yes on glibc systems.
-          *-gnu*)   gl_cv_func_printf_enomem="guessing yes";;
-                    # Guess yes on Solaris.
-          solaris*) gl_cv_func_printf_enomem="guessing yes";;
-                    # Guess yes on AIX.
-          aix*)     gl_cv_func_printf_enomem="guessing yes";;
-                    # Guess yes on HP-UX/hppa.
-          hpux*)    case "$host_cpu" in
-                      hppa*) gl_cv_func_printf_enomem="guessing yes";;
-                      *)     gl_cv_func_printf_enomem="guessing no";;
-                    esac
-                    ;;
-                    # Guess yes on IRIX.
-          irix*)    gl_cv_func_printf_enomem="guessing yes";;
-                    # Guess yes on OSF/1.
-          osf*)     gl_cv_func_printf_enomem="guessing yes";;
-                    # Guess yes on BeOS.
-          beos*)    gl_cv_func_printf_enomem="guessing yes";;
-                    # Guess yes on Haiku.
-          haiku*)   gl_cv_func_printf_enomem="guessing yes";;
-                    # If we don't know, assume the worst.
-          *)        gl_cv_func_printf_enomem="guessing no";;
+                         # Guess yes on glibc systems.
+          *-gnu* | gnu*) gl_cv_func_printf_enomem="guessing yes";;
+                         # Guess yes on Solaris.
+          solaris*)      gl_cv_func_printf_enomem="guessing yes";;
+                         # Guess yes on AIX.
+          aix*)          gl_cv_func_printf_enomem="guessing yes";;
+                         # Guess yes on HP-UX/hppa.
+          hpux*)         case "$host_cpu" in
+                           hppa*) gl_cv_func_printf_enomem="guessing yes";;
+                           *)     gl_cv_func_printf_enomem="guessing no";;
+                         esac
+                         ;;
+                         # Guess yes on IRIX.
+          irix*)         gl_cv_func_printf_enomem="guessing yes";;
+                         # Guess yes on OSF/1.
+          osf*)          gl_cv_func_printf_enomem="guessing yes";;
+                         # Guess yes on BeOS.
+          beos*)         gl_cv_func_printf_enomem="guessing yes";;
+                         # Guess yes on Haiku.
+          haiku*)        gl_cv_func_printf_enomem="guessing yes";;
+                         # If we don't know, assume the worst.
+          *)             gl_cv_func_printf_enomem="guessing no";;
         esac
 changequote([,])dnl
       fi
@@ -1176,7 +1176,7 @@ int main ()
 changequote(,)dnl
          case "$host_os" in
                                  # Guess yes on glibc systems.
-           *-gnu*)               gl_cv_func_snprintf_truncation_c99="guessing yes";;
+           *-gnu* | gnu*)        gl_cv_func_snprintf_truncation_c99="guessing yes";;
                                  # Guess yes on FreeBSD >= 5.
            freebsd[1-4].*)       gl_cv_func_snprintf_truncation_c99="guessing no";;
            freebsd* | kfreebsd*) gl_cv_func_snprintf_truncation_c99="guessing yes";;
@@ -1276,7 +1276,7 @@ int main ()
         [case "$host_os" in
 changequote(,)dnl
                                  # Guess yes on glibc systems.
-           *-gnu*)               gl_cv_func_snprintf_retval_c99="guessing yes";;
+           *-gnu* | gnu*)        gl_cv_func_snprintf_retval_c99="guessing yes";;
                                  # Guess yes on FreeBSD >= 5.
            freebsd[1-4].*)       gl_cv_func_snprintf_retval_c99="guessing no";;
            freebsd* | kfreebsd*) gl_cv_func_snprintf_retval_c99="guessing yes";;
@@ -1366,7 +1366,7 @@ int main ()
 changequote(,)dnl
          case "$host_os" in
                                  # Guess yes on glibc systems.
-           *-gnu*)               gl_cv_func_snprintf_directive_n="guessing yes";;
+           *-gnu* | gnu*)        gl_cv_func_snprintf_directive_n="guessing yes";;
                                  # Guess yes on FreeBSD >= 5.
            freebsd[1-4].*)       gl_cv_func_snprintf_directive_n="guessing no";;
            freebsd* | kfreebsd*) gl_cv_func_snprintf_directive_n="guessing yes";;
@@ -1516,7 +1516,7 @@ int main()
 changequote(,)dnl
          case "$host_os" in
                                  # Guess yes on glibc systems.
-           *-gnu*)               gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
+           *-gnu* | gnu*)        gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
                                  # Guess yes on FreeBSD >= 5.
            freebsd[1-4].*)       gl_cv_func_vsnprintf_zerosize_c99="guessing no";;
            freebsd* | kfreebsd*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
diff --git a/gnulib-m4/pthread_rwlock_rdlock.m4 b/gnulib-m4/pthread_rwlock_rdlock.m4
index da69865..9c1d5d0 100644
--- a/gnulib-m4/pthread_rwlock_rdlock.m4
+++ b/gnulib-m4/pthread_rwlock_rdlock.m4
@@ -1,5 +1,5 @@
 # pthread_rwlock_rdlock.m4 serial 1
-dnl Copyright (C) 2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2017-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/pthread_sigmask.m4 b/gnulib-m4/pthread_sigmask.m4
index ce36aae..a33b433 100644
--- a/gnulib-m4/pthread_sigmask.m4
+++ b/gnulib-m4/pthread_sigmask.m4
@@ -1,5 +1,5 @@
 # pthread_sigmask.m4 serial 16
-dnl Copyright (C) 2011-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/putenv.m4 b/gnulib-m4/putenv.m4
index 08ae416..f2a76b2 100644
--- a/gnulib-m4/putenv.m4
+++ b/gnulib-m4/putenv.m4
@@ -1,5 +1,5 @@
-# putenv.m4 serial 21
-dnl Copyright (C) 2002-2017 Free Software Foundation, Inc.
+# putenv.m4 serial 22
+dnl Copyright (C) 2002-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -34,12 +34,12 @@ AC_DEFUN([gl_FUNC_PUTENV],
              gl_cv_func_svid_putenv=no,
              dnl When crosscompiling, assume putenv is broken.
              [case "$host_os" in
-                        # Guess yes on glibc systems.
-                *-gnu*) gl_cv_func_svid_putenv="guessing yes" ;;
-                        # Guess no on native Windows.
-                mingw*) gl_cv_func_svid_putenv="guessing no" ;;
-                        # If we don't know, assume the worst.
-                *)      gl_cv_func_svid_putenv="guessing no" ;;
+                               # Guess yes on glibc systems.
+                *-gnu* | gnu*) gl_cv_func_svid_putenv="guessing yes" ;;
+                               # Guess no on native Windows.
+                mingw*)        gl_cv_func_svid_putenv="guessing no" ;;
+                               # If we don't know, assume the worst.
+                *)             gl_cv_func_svid_putenv="guessing no" ;;
               esac
              ])
    ])
diff --git a/gnulib-m4/raise.m4 b/gnulib-m4/raise.m4
index fe6e068..761e4b9 100644
--- a/gnulib-m4/raise.m4
+++ b/gnulib-m4/raise.m4
@@ -1,5 +1,5 @@
 # raise.m4 serial 4
-dnl Copyright (C) 2011-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/relocatable-lib.m4 b/gnulib-m4/relocatable-lib.m4
index 24572ee..6a1ced4 100644
--- a/gnulib-m4/relocatable-lib.m4
+++ b/gnulib-m4/relocatable-lib.m4
@@ -1,5 +1,5 @@
 # relocatable-lib.m4 serial 6
-dnl Copyright (C) 2003, 2005-2007, 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2005-2007, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/setenv.m4 b/gnulib-m4/setenv.m4
index 005aa8c..5d257f7 100644
--- a/gnulib-m4/setenv.m4
+++ b/gnulib-m4/setenv.m4
@@ -1,5 +1,5 @@
-# setenv.m4 serial 26
-dnl Copyright (C) 2001-2004, 2006-2017 Free Software Foundation, Inc.
+# setenv.m4 serial 27
+dnl Copyright (C) 2001-2004, 2006-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -35,10 +35,10 @@ AC_DEFUN([gl_FUNC_SETENV],
       ]])],
       [gl_cv_func_setenv_works=yes], [gl_cv_func_setenv_works=no],
       [case "$host_os" in
-                 # Guess yes on glibc systems.
-         *-gnu*) gl_cv_func_setenv_works="guessing yes" ;;
-                 # If we don't know, assume the worst.
-         *)      gl_cv_func_setenv_works="guessing no" ;;
+                        # Guess yes on glibc systems.
+         *-gnu* | gnu*) gl_cv_func_setenv_works="guessing yes" ;;
+                        # If we don't know, assume the worst.
+         *)             gl_cv_func_setenv_works="guessing no" ;;
        esac
       ])])
     case "$gl_cv_func_setenv_works" in
diff --git a/gnulib-m4/setlocale.m4 b/gnulib-m4/setlocale.m4
index 879317d..802ee01 100644
--- a/gnulib-m4/setlocale.m4
+++ b/gnulib-m4/setlocale.m4
@@ -1,5 +1,5 @@
 # setlocale.m4 serial 4
-dnl Copyright (C) 2011-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/signal_h.m4 b/gnulib-m4/signal_h.m4
index eaf5ce9..394b91d 100644
--- a/gnulib-m4/signal_h.m4
+++ b/gnulib-m4/signal_h.m4
@@ -1,5 +1,5 @@
 # signal_h.m4 serial 18
-dnl Copyright (C) 2007-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/signalblocking.m4 b/gnulib-m4/signalblocking.m4
index 26041b1..4350b21 100644
--- a/gnulib-m4/signalblocking.m4
+++ b/gnulib-m4/signalblocking.m4
@@ -1,5 +1,5 @@
 # signalblocking.m4 serial 14
-dnl Copyright (C) 2001-2002, 2006-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2001-2002, 2006-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/signbit.m4 b/gnulib-m4/signbit.m4
index db60ab7..9e7884d 100644
--- a/gnulib-m4/signbit.m4
+++ b/gnulib-m4/signbit.m4
@@ -1,5 +1,5 @@
-# signbit.m4 serial 15
-dnl Copyright (C) 2007-2017 Free Software Foundation, Inc.
+# signbit.m4 serial 16
+dnl Copyright (C) 2007-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -29,12 +29,12 @@ AC_DEFUN([gl_SIGNBIT],
         [gl_cv_func_signbit=yes],
         [gl_cv_func_signbit=no],
         [case "$host_os" in
-                   # Guess yes on glibc systems.
-           *-gnu*) gl_cv_func_signbit="guessing yes" ;;
-                   # Guess yes on native Windows.
-           mingw*) gl_cv_func_signbit="guessing yes" ;;
-                   # If we don't know, assume the worst.
-           *)      gl_cv_func_signbit="guessing no" ;;
+                          # Guess yes on glibc systems.
+           *-gnu* | gnu*) gl_cv_func_signbit="guessing yes" ;;
+                          # Guess yes on native Windows.
+           mingw*)        gl_cv_func_signbit="guessing yes" ;;
+                          # If we don't know, assume the worst.
+           *)             gl_cv_func_signbit="guessing no" ;;
          esac
         ])
     ])
@@ -60,17 +60,17 @@ AC_DEFUN([gl_SIGNBIT],
         [gl_cv_func_signbit_gcc=yes],
         [gl_cv_func_signbit_gcc=no],
         [case "$host_os" in
-                   # Guess yes on glibc systems.
-           *-gnu*) gl_cv_func_signbit_gcc="guessing yes" ;;
-                   # Guess yes on mingw, no on MSVC.
-           mingw*) if test -n "$GCC"; then
-                     gl_cv_func_signbit_gcc="guessing yes"
-                   else
-                     gl_cv_func_signbit_gcc="guessing no"
-                   fi
-                   ;;
-                   # If we don't know, assume the worst.
-           *)      gl_cv_func_signbit_gcc="guessing no" ;;
+                          # Guess yes on glibc systems.
+           *-gnu* | gnu*) gl_cv_func_signbit_gcc="guessing yes" ;;
+                          # Guess yes on mingw, no on MSVC.
+           mingw*)        if test -n "$GCC"; then
+                            gl_cv_func_signbit_gcc="guessing yes"
+                          else
+                            gl_cv_func_signbit_gcc="guessing no"
+                          fi
+                          ;;
+                          # If we don't know, assume the worst.
+           *)             gl_cv_func_signbit_gcc="guessing no" ;;
          esac
         ])
     ])
diff --git a/gnulib-m4/size_max.m4 b/gnulib-m4/size_max.m4
index 05ad1b6..2b770e6 100644
--- a/gnulib-m4/size_max.m4
+++ b/gnulib-m4/size_max.m4
@@ -1,5 +1,5 @@
 # size_max.m4 serial 10
-dnl Copyright (C) 2003, 2005-2006, 2008-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2005-2006, 2008-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/sleep.m4 b/gnulib-m4/sleep.m4
index e2d27be..7ddaffa 100644
--- a/gnulib-m4/sleep.m4
+++ b/gnulib-m4/sleep.m4
@@ -1,5 +1,5 @@
-# sleep.m4 serial 8
-dnl Copyright (C) 2007-2017 Free Software Foundation, Inc.
+# sleep.m4 serial 9
+dnl Copyright (C) 2007-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -46,12 +46,12 @@ handle_alarm (int sig)
     ]])],
       [gl_cv_func_sleep_works=yes], [gl_cv_func_sleep_works=no],
       [case "$host_os" in
-                 # Guess yes on glibc systems.
-         *-gnu*) gl_cv_func_sleep_works="guessing yes" ;;
-                 # Guess no on native Windows.
-         mingw*) gl_cv_func_sleep_works="guessing no" ;;
-                 # If we don't know, assume the worst.
-         *)      gl_cv_func_sleep_works="guessing no" ;;
+                        # Guess yes on glibc systems.
+         *-gnu* | gnu*) gl_cv_func_sleep_works="guessing yes" ;;
+                        # Guess no on native Windows.
+         mingw*)        gl_cv_func_sleep_works="guessing no" ;;
+                        # If we don't know, assume the worst.
+         *)             gl_cv_func_sleep_works="guessing no" ;;
        esac
       ])])
     case "$gl_cv_func_sleep_works" in
diff --git a/gnulib-m4/ssize_t.m4 b/gnulib-m4/ssize_t.m4
index 66ba9d4..0977f20 100644
--- a/gnulib-m4/ssize_t.m4
+++ b/gnulib-m4/ssize_t.m4
@@ -1,5 +1,5 @@
 # ssize_t.m4 serial 5 (gettext-0.18.2)
-dnl Copyright (C) 2001-2003, 2006, 2010-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2001-2003, 2006, 2010-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/stdalign.m4 b/gnulib-m4/stdalign.m4
index f091aa5..c74fe9b 100644
--- a/gnulib-m4/stdalign.m4
+++ b/gnulib-m4/stdalign.m4
@@ -1,6 +1,6 @@
 # Check for stdalign.h that conforms to C11.
 
-dnl Copyright 2011-2017 Free Software Foundation, Inc.
+dnl Copyright 2011-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/stdbool.m4 b/gnulib-m4/stdbool.m4
index 9e714d4..f8c0577 100644
--- a/gnulib-m4/stdbool.m4
+++ b/gnulib-m4/stdbool.m4
@@ -1,6 +1,6 @@
 # Check for stdbool.h that conforms to C99.
 
-dnl Copyright (C) 2002-2006, 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/stddef_h.m4 b/gnulib-m4/stddef_h.m4
index f45def1..ba3d201 100644
--- a/gnulib-m4/stddef_h.m4
+++ b/gnulib-m4/stddef_h.m4
@@ -1,6 +1,6 @@
 dnl A placeholder for <stddef.h>, for platforms that have issues.
 # stddef_h.m4 serial 5
-dnl Copyright (C) 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/stdint.m4 b/gnulib-m4/stdint.m4
index 4bf3e47..b86184c 100644
--- a/gnulib-m4/stdint.m4
+++ b/gnulib-m4/stdint.m4
@@ -1,5 +1,5 @@
 # stdint.m4 serial 51
-dnl Copyright (C) 2001-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2001-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/stdint_h.m4 b/gnulib-m4/stdint_h.m4
index 786eaa3..2d2a33c 100644
--- a/gnulib-m4/stdint_h.m4
+++ b/gnulib-m4/stdint_h.m4
@@ -1,5 +1,5 @@
 # stdint_h.m4 serial 9
-dnl Copyright (C) 1997-2004, 2006, 2008-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 1997-2004, 2006, 2008-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/stdio_h.m4 b/gnulib-m4/stdio_h.m4
index 9ffbb85..0debe69 100644
--- a/gnulib-m4/stdio_h.m4
+++ b/gnulib-m4/stdio_h.m4
@@ -1,5 +1,5 @@
-# stdio_h.m4 serial 48
-dnl Copyright (C) 2007-2017 Free Software Foundation, Inc.
+# stdio_h.m4 serial 49
+dnl Copyright (C) 2007-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -28,7 +28,7 @@ AC_DEFUN([gl_STDIO_H],
        /* For non-mingw systems, compilation will trivially succeed.
           For mingw, compilation will succeed for older mingw (system
           printf, "I64d") and fail for newer mingw (gnu printf, "lld"). */
-       #if ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__) && \
+       #if (defined _WIN32 && ! defined __CYGWIN__) && \
          (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
        extern char PRIdMAX_probe[sizeof PRIdMAX == sizeof "I64d" ? 1 : -1];
        #endif
diff --git a/gnulib-m4/stdlib_h.m4 b/gnulib-m4/stdlib_h.m4
index 3537346..49dc5d5 100644
--- a/gnulib-m4/stdlib_h.m4
+++ b/gnulib-m4/stdlib_h.m4
@@ -1,5 +1,5 @@
-# stdlib_h.m4 serial 44
-dnl Copyright (C) 2007-2017 Free Software Foundation, Inc.
+# stdlib_h.m4 serial 45
+dnl Copyright (C) 2007-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -14,6 +14,9 @@ AC_DEFUN([gl_STDLIB_H],
   dnl guaranteed by C89.
   gl_WARN_ON_USE_PREPARE([[#include <stdlib.h>
 #if HAVE_SYS_LOADAVG_H
+/* OpenIndiana has a bug: <sys/time.h> must be included before
+   <sys/loadavg.h>.  */
+# include <sys/time.h>
 # include <sys/loadavg.h>
 #endif
 #if HAVE_RANDOM_H
diff --git a/gnulib-m4/strerror.m4 b/gnulib-m4/strerror.m4
index 279efd6..b886b8d 100644
--- a/gnulib-m4/strerror.m4
+++ b/gnulib-m4/strerror.m4
@@ -1,5 +1,5 @@
-# strerror.m4 serial 18
-dnl Copyright (C) 2002, 2007-2017 Free Software Foundation, Inc.
+# strerror.m4 serial 19
+dnl Copyright (C) 2002, 2007-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -24,10 +24,10 @@ AC_DEFUN([gl_FUNC_STRERROR],
         [gl_cv_func_working_strerror=yes],
         [gl_cv_func_working_strerror=no],
         [case "$host_os" in
-                   # Guess yes on glibc systems.
-           *-gnu*) gl_cv_func_working_strerror="guessing yes" ;;
-                   # If we don't know, assume the worst.
-           *)      gl_cv_func_working_strerror="guessing no" ;;
+                          # Guess yes on glibc systems.
+           *-gnu* | gnu*) gl_cv_func_working_strerror="guessing yes" ;;
+                          # If we don't know, assume the worst.
+           *)             gl_cv_func_working_strerror="guessing no" ;;
          esac
         ])
     ])
@@ -78,12 +78,12 @@ AC_DEFUN([gl_FUNC_STRERROR_0],
       [gl_cv_func_strerror_0_works=yes],
       [gl_cv_func_strerror_0_works=no],
       [case "$host_os" in
-                 # Guess yes on glibc systems.
-         *-gnu*) gl_cv_func_strerror_0_works="guessing yes" ;;
-                 # Guess yes on native Windows.
-         mingw*) gl_cv_func_strerror_0_works="guessing yes" ;;
-                 # If we don't know, assume the worst.
-         *)      gl_cv_func_strerror_0_works="guessing no" ;;
+                        # Guess yes on glibc systems.
+         *-gnu* | gnu*) gl_cv_func_strerror_0_works="guessing yes" ;;
+                        # Guess yes on native Windows.
+         mingw*)        gl_cv_func_strerror_0_works="guessing yes" ;;
+                        # If we don't know, assume the worst.
+         *)             gl_cv_func_strerror_0_works="guessing no" ;;
        esac
       ])
   ])
diff --git a/gnulib-m4/string_h.m4 b/gnulib-m4/string_h.m4
index 8c42cf1..97c80dc 100644
--- a/gnulib-m4/string_h.m4
+++ b/gnulib-m4/string_h.m4
@@ -1,6 +1,6 @@
 # Configure a GNU-like replacement for <string.h>.
 
-# Copyright (C) 2007-2017 Free Software Foundation, Inc.
+# Copyright (C) 2007-2018 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/strncat.m4 b/gnulib-m4/strncat.m4
index 92ee572..b4fcbe2 100644
--- a/gnulib-m4/strncat.m4
+++ b/gnulib-m4/strncat.m4
@@ -1,5 +1,5 @@
 # strncat.m4 serial 4
-dnl Copyright (C) 2002-2004, 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2004, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/strstr.m4 b/gnulib-m4/strstr.m4
index f48a6cd..aa590a9 100644
--- a/gnulib-m4/strstr.m4
+++ b/gnulib-m4/strstr.m4
@@ -1,5 +1,5 @@
 # strstr.m4 serial 19
-dnl Copyright (C) 2008-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/sys_socket_h.m4 b/gnulib-m4/sys_socket_h.m4
index 3ecbe7c..f210378 100644
--- a/gnulib-m4/sys_socket_h.m4
+++ b/gnulib-m4/sys_socket_h.m4
@@ -1,5 +1,5 @@
 # sys_socket_h.m4 serial 23
-dnl Copyright (C) 2005-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/sys_types_h.m4 b/gnulib-m4/sys_types_h.m4
index 7509771..2debfb0 100644
--- a/gnulib-m4/sys_types_h.m4
+++ b/gnulib-m4/sys_types_h.m4
@@ -1,5 +1,5 @@
 # sys_types_h.m4 serial 9
-dnl Copyright (C) 2011-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/thread.m4 b/gnulib-m4/thread.m4
index 62bbcee..4048ac1 100644
--- a/gnulib-m4/thread.m4
+++ b/gnulib-m4/thread.m4
@@ -1,5 +1,5 @@
 # thread.m4 serial 3
-dnl Copyright (C) 2008-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/threadlib.m4 b/gnulib-m4/threadlib.m4
index 9aa18e2..1f7b134 100644
--- a/gnulib-m4/threadlib.m4
+++ b/gnulib-m4/threadlib.m4
@@ -1,5 +1,5 @@
 # threadlib.m4 serial 13
-dnl Copyright (C) 2005-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/time_h.m4 b/gnulib-m4/time_h.m4
index 28e2209..ad6f2f5 100644
--- a/gnulib-m4/time_h.m4
+++ b/gnulib-m4/time_h.m4
@@ -1,6 +1,6 @@
 # Configure a more-standard replacement for <time.h>.
 
-# Copyright (C) 2000-2001, 2003-2007, 2009-2017 Free Software Foundation, Inc.
+# Copyright (C) 2000-2001, 2003-2007, 2009-2018 Free Software Foundation, Inc.
 
 # serial 11
 
diff --git a/gnulib-m4/unistd_h.m4 b/gnulib-m4/unistd_h.m4
index 60e7ea4..159c48a 100644
--- a/gnulib-m4/unistd_h.m4
+++ b/gnulib-m4/unistd_h.m4
@@ -1,5 +1,5 @@
-# unistd_h.m4 serial 71
-dnl Copyright (C) 2006-2017 Free Software Foundation, Inc.
+# unistd_h.m4 serial 73
+dnl Copyright (C) 2006-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -37,7 +37,7 @@ AC_DEFUN([gl_UNISTD_H],
 # include <fcntl.h>
 # include <stdio.h>
 # include <stdlib.h>
-# if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+# if defined _WIN32 && ! defined __CYGWIN__
 #  include <io.h>
 # endif
 #endif
@@ -140,7 +140,6 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
   HAVE_SLEEP=1;           AC_SUBST([HAVE_SLEEP])
   HAVE_SYMLINK=1;         AC_SUBST([HAVE_SYMLINK])
   HAVE_SYMLINKAT=1;       AC_SUBST([HAVE_SYMLINKAT])
-  HAVE_TRUNCATE=1;        AC_SUBST([HAVE_TRUNCATE])
   HAVE_UNLINKAT=1;        AC_SUBST([HAVE_UNLINKAT])
   HAVE_USLEEP=1;          AC_SUBST([HAVE_USLEEP])
   HAVE_DECL_ENVIRON=1;    AC_SUBST([HAVE_DECL_ENVIRON])
@@ -152,6 +151,7 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
   HAVE_DECL_GETPAGESIZE=1; AC_SUBST([HAVE_DECL_GETPAGESIZE])
   HAVE_DECL_GETUSERSHELL=1; AC_SUBST([HAVE_DECL_GETUSERSHELL])
   HAVE_DECL_SETHOSTNAME=1; AC_SUBST([HAVE_DECL_SETHOSTNAME])
+  HAVE_DECL_TRUNCATE=1;   AC_SUBST([HAVE_DECL_TRUNCATE])
   HAVE_DECL_TTYNAME_R=1;  AC_SUBST([HAVE_DECL_TTYNAME_R])
   HAVE_OS_H=0;            AC_SUBST([HAVE_OS_H])
   HAVE_SYS_PARAM_H=0;     AC_SUBST([HAVE_SYS_PARAM_H])
diff --git a/gnulib-m4/usleep.m4 b/gnulib-m4/usleep.m4
index e69ed85..0884281 100644
--- a/gnulib-m4/usleep.m4
+++ b/gnulib-m4/usleep.m4
@@ -1,5 +1,5 @@
-# usleep.m4 serial 4
-dnl Copyright (C) 2009-2017 Free Software Foundation, Inc.
+# usleep.m4 serial 5
+dnl Copyright (C) 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -29,12 +29,12 @@ AC_DEFUN([gl_FUNC_USLEEP],
 ]], [[return !!usleep (1000000);]])],
         [gl_cv_func_usleep_works=yes], [gl_cv_func_usleep_works=no],
         [case "$host_os" in
-                   # Guess yes on glibc systems.
-           *-gnu*) gl_cv_func_usleep_works="guessing yes" ;;
-                   # Guess no on native Windows.
-           mingw*) gl_cv_func_usleep_works="guessing no" ;;
-                   # If we don't know, assume the worst.
-           *)      gl_cv_func_usleep_works="guessing no" ;;
+                          # Guess yes on glibc systems.
+           *-gnu* | gnu*) gl_cv_func_usleep_works="guessing yes" ;;
+                          # Guess no on native Windows.
+           mingw*)        gl_cv_func_usleep_works="guessing no" ;;
+                          # If we don't know, assume the worst.
+           *)             gl_cv_func_usleep_works="guessing no" ;;
          esac
         ])])
     case "$gl_cv_func_usleep_works" in
diff --git a/gnulib-m4/vasnprintf.m4 b/gnulib-m4/vasnprintf.m4
index 47c5951..b3fda27 100644
--- a/gnulib-m4/vasnprintf.m4
+++ b/gnulib-m4/vasnprintf.m4
@@ -1,5 +1,5 @@
 # vasnprintf.m4 serial 36
-dnl Copyright (C) 2002-2004, 2006-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2004, 2006-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/warn-on-use.m4 b/gnulib-m4/warn-on-use.m4
index 25ce737..e9c48bb 100644
--- a/gnulib-m4/warn-on-use.m4
+++ b/gnulib-m4/warn-on-use.m4
@@ -1,5 +1,5 @@
 # warn-on-use.m4 serial 5
-dnl Copyright (C) 2010-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/wchar_h.m4 b/gnulib-m4/wchar_h.m4
index d09ea08..416e0a1 100644
--- a/gnulib-m4/wchar_h.m4
+++ b/gnulib-m4/wchar_h.m4
@@ -1,6 +1,6 @@
 dnl A placeholder for ISO C99 <wchar.h>, for platforms that have issues.
 
-dnl Copyright (C) 2007-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/wchar_t.m4 b/gnulib-m4/wchar_t.m4
index 11783d2..83bc3d5 100644
--- a/gnulib-m4/wchar_t.m4
+++ b/gnulib-m4/wchar_t.m4
@@ -1,5 +1,5 @@
 # wchar_t.m4 serial 4 (gettext-0.18.2)
-dnl Copyright (C) 2002-2003, 2008-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2008-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/wcrtomb.m4 b/gnulib-m4/wcrtomb.m4
index fcc3f8c..c4e4463 100644
--- a/gnulib-m4/wcrtomb.m4
+++ b/gnulib-m4/wcrtomb.m4
@@ -1,5 +1,5 @@
 # wcrtomb.m4 serial 12
-dnl Copyright (C) 2008-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/wctob.m4 b/gnulib-m4/wctob.m4
index 7b7d462..c7eeb5f 100644
--- a/gnulib-m4/wctob.m4
+++ b/gnulib-m4/wctob.m4
@@ -1,5 +1,5 @@
 # wctob.m4 serial 11
-dnl Copyright (C) 2008-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/wctomb.m4 b/gnulib-m4/wctomb.m4
index dc1860f..962ed84 100644
--- a/gnulib-m4/wctomb.m4
+++ b/gnulib-m4/wctomb.m4
@@ -1,5 +1,5 @@
 # wctomb.m4 serial 2
-dnl Copyright (C) 2011-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/wctype_h.m4 b/gnulib-m4/wctype_h.m4
index 596f26b..15d1ef3 100644
--- a/gnulib-m4/wctype_h.m4
+++ b/gnulib-m4/wctype_h.m4
@@ -2,7 +2,7 @@
 
 dnl A placeholder for ISO C99 <wctype.h>, for platforms that lack it.
 
-dnl Copyright (C) 2006-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/wcwidth.m4 b/gnulib-m4/wcwidth.m4
index 1243606..0605ce8 100644
--- a/gnulib-m4/wcwidth.m4
+++ b/gnulib-m4/wcwidth.m4
@@ -1,5 +1,5 @@
-# wcwidth.m4 serial 25
-dnl Copyright (C) 2006-2017 Free Software Foundation, Inc.
+# wcwidth.m4 serial 26
+dnl Copyright (C) 2006-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -98,9 +98,9 @@ int main ()
           [
 changequote(,)dnl
            case "$host_os" in
-                     # Guess yes on glibc and AIX 7 systems.
-             *-gnu* | aix[7-9]*) gl_cv_func_wcwidth_works="guessing yes";;
-             *)                  gl_cv_func_wcwidth_works="guessing no";;
+                                        # Guess yes on glibc and AIX 7 systems.
+             *-gnu* | gnu* | aix[7-9]*) gl_cv_func_wcwidth_works="guessing yes";;
+             *)                         gl_cv_func_wcwidth_works="guessing no";;
            esac
 changequote([,])dnl
           ])
diff --git a/gnulib-m4/wint_t.m4 b/gnulib-m4/wint_t.m4
index d30b8bc..95f6854 100644
--- a/gnulib-m4/wint_t.m4
+++ b/gnulib-m4/wint_t.m4
@@ -1,5 +1,5 @@
 # wint_t.m4 serial 7
-dnl Copyright (C) 2003, 2007-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2007-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/xalloc.m4 b/gnulib-m4/xalloc.m4
index 53aba14..7bd360b 100644
--- a/gnulib-m4/xalloc.m4
+++ b/gnulib-m4/xalloc.m4
@@ -1,5 +1,5 @@
 # xalloc.m4 serial 18
-dnl Copyright (C) 2002-2006, 2009-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2009-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/xsize.m4 b/gnulib-m4/xsize.m4
index 5f85057..fc7c1ab 100644
--- a/gnulib-m4/xsize.m4
+++ b/gnulib-m4/xsize.m4
@@ -1,5 +1,5 @@
 # xsize.m4 serial 5
-dnl Copyright (C) 2003-2004, 2008-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2003-2004, 2008-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/yield.m4 b/gnulib-m4/yield.m4
index c6682b9..2a7c907 100644
--- a/gnulib-m4/yield.m4
+++ b/gnulib-m4/yield.m4
@@ -1,5 +1,5 @@
 # yield.m4 serial 2
-dnl Copyright (C) 2005-2017 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.