X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fwcwidth.m4;h=740f81ee17fee883dbfbbfecb3cad45d51da1afb;hb=a0b25daf001cb1a0352f329e2b5e1640acc88541;hp=ad5c6cc8e94e6a424eb6f9c17aaa2972217a8273;hpb=8b4b3169967174633f41487dbf7aa9c1a49c36d0;p=gnulib.git

diff --git a/m4/wcwidth.m4 b/m4/wcwidth.m4
index ad5c6cc8e..740f81ee1 100644
--- a/m4/wcwidth.m4
+++ b/m4/wcwidth.m4
@@ -1,5 +1,5 @@
-# wcwidth.m4 serial 17
-dnl Copyright (C) 2006-2010 Free Software Foundation, Inc.
+# wcwidth.m4 serial 23
+dnl Copyright (C) 2006-2013 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.
@@ -18,7 +18,7 @@ AC_DEFUN([gl_FUNC_WCWIDTH],
   AC_CHECK_HEADERS_ONCE([wchar.h])
   AC_CHECK_FUNCS_ONCE([wcwidth])
 
-  AC_CHECK_DECLS([wcwidth], [], [], [
+  AC_CHECK_DECLS([wcwidth], [], [], [[
 /* AIX 3.2.5 declares wcwidth in <string.h>. */
 #include <string.h>
 /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
@@ -29,19 +29,22 @@ AC_DEFUN([gl_FUNC_WCWIDTH],
 #include <stdio.h>
 #include <time.h>
 #include <wchar.h>
-])
+]])
   if test $ac_cv_have_decl_wcwidth != yes; then
     HAVE_DECL_WCWIDTH=0
   fi
 
   if test $ac_cv_func_wcwidth = yes; then
-    dnl On MacOS X 10.3, wcwidth(0x0301) (COMBINING ACUTE ACCENT) returns 1.
+    HAVE_WCWIDTH=1
+    dnl On Mac OS X 10.3, wcwidth(0x0301) (COMBINING ACUTE ACCENT) returns 1.
+    dnl On OpenBSD 5.0, wcwidth(0x05B0) (HEBREW POINT SHEVA) returns 1.
     dnl On OSF/1 5.1, wcwidth(0x200B) (ZERO WIDTH SPACE) returns 1.
     dnl This leads to bugs in 'ls' (coreutils).
     AC_CACHE_CHECK([whether wcwidth works reasonably in UTF-8 locales],
       [gl_cv_func_wcwidth_works],
       [
-        AC_TRY_RUN([
+        AC_RUN_IFELSE(
+          [AC_LANG_SOURCE([[
 #include <locale.h>
 /* AIX 3.2.5 declares wcwidth in <string.h>. */
 #include <string.h>
@@ -62,11 +65,20 @@ int wcwidth (int);
 #endif
 int main ()
 {
+  int result = 0;
   if (setlocale (LC_ALL, "fr_FR.UTF-8") != NULL)
-    if (wcwidth (0x0301) > 0 || wcwidth (0x200B) > 0)
-      return 1;
-  return 0;
-}], [gl_cv_func_wcwidth_works=yes], [gl_cv_func_wcwidth_works=no],
+    {
+      if (wcwidth (0x0301) > 0)
+        result |= 1;
+      if (wcwidth (0x05B0) > 0)
+        result |= 2;
+      if (wcwidth (0x200B) > 0)
+        result |= 4;
+    }
+  return result;
+}]])],
+          [gl_cv_func_wcwidth_works=yes],
+          [gl_cv_func_wcwidth_works=no],
           [
 changequote(,)dnl
            case "$host_os" in
@@ -81,13 +93,8 @@ changequote([,])dnl
       *yes) ;;
       *no) REPLACE_WCWIDTH=1 ;;
     esac
-  fi
-  if test $ac_cv_func_wcwidth != yes || test $REPLACE_WCWIDTH = 1; then
-    AC_LIBOBJ([wcwidth])
-  fi
-  if test $ac_cv_func_wcwidth != yes || test $REPLACE_WCWIDTH = 1 \
-     || test $HAVE_DECL_WCWIDTH = 0; then
-    gl_REPLACE_WCHAR_H
+  else
+    HAVE_WCWIDTH=0
   fi
   dnl We don't substitute HAVE_WCWIDTH. We assume that if the system does not
   dnl have the wcwidth function, then it does not declare it.