doc: use ASCII in .texi files where UTF-8 isn't needed

[gnulib.git] / m4 / mbrtowc.m4

diff --git a/m4/mbrtowc.m4 b/m4/mbrtowc.m4
index c07da11..a9d1570 100644 (file)
--- a/m4/mbrtowc.m4
+++ b/m4/mbrtowc.m4
@@ -1,5 +1,5 @@
-# mbrtowc.m4 serial 21
-dnl Copyright (C) 2001-2002, 2004-2005, 2008-2011 Free Software Foundation,
+# mbrtowc.m4 serial 25
+dnl Copyright (C) 2001-2002, 2004-2005, 2008-2014 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,
@@ -15,6 +15,22 @@ AC_DEFUN([gl_FUNC_MBRTOWC],
   AC_CHECK_FUNCS_ONCE([mbrtowc])
   if test $ac_cv_func_mbrtowc = no; then
     HAVE_MBRTOWC=0
+    AC_CHECK_DECLS([mbrtowc],,, [[
+/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
+   <wchar.h>.
+   BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
+   included before <wchar.h>.  */
+#include <stddef.h>
+#include <stdio.h>
+#include <time.h>
+#include <wchar.h>
+]])
+    if test $ac_cv_have_decl_mbrtowc = yes; then
+      dnl On Minix 3.1.8, the system's <wchar.h> declares mbrtowc() although
+      dnl it does not have the function. Avoid a collision with gnulib's
+      dnl replacement.
+      REPLACE_MBRTOWC=1
+    fi
   else
     if test $REPLACE_MBSTATE_T = 1; then
       REPLACE_MBRTOWC=1
@@ -53,11 +69,6 @@ AC_DEFUN([gl_FUNC_MBRTOWC],
       esac
     fi
   fi
-  if test $HAVE_MBRTOWC = 0 || test $REPLACE_MBRTOWC = 1; then
-    gl_REPLACE_WCHAR_H
-    AC_LIBOBJ([mbrtowc])
-    gl_PREREQ_MBRTOWC
-  fi
 ])
 
 dnl Test whether mbsinit() and mbrtowc() need to be overridden in a way that
@@ -88,9 +99,6 @@ AC_DEFUN([gl_MBSTATE_T_BROKEN],
   else
     REPLACE_MBSTATE_T=1
   fi
-  if test $REPLACE_MBSTATE_T = 1; then
-    gl_REPLACE_WCHAR_H
-  fi
 ])
 
 dnl Test whether mbrtowc puts the state into non-initial state when parsing an
@@ -348,7 +356,7 @@ AC_DEFUN([gl_MBRTOWC_RETVAL],
   AC_REQUIRE([AC_PROG_CC])
   AC_REQUIRE([gt_LOCALE_FR_UTF8])
   AC_REQUIRE([gt_LOCALE_JA])
-  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_REQUIRE([AC_CANONICAL_HOST])
   AC_CACHE_CHECK([whether mbrtowc has a correct return value],
     [gl_cv_func_mbrtowc_retval],
     [
@@ -356,13 +364,14 @@ AC_DEFUN([gl_MBRTOWC_RETVAL],
       dnl is present.
 changequote(,)dnl
       case "$host_os" in
-                          # Guess no on HP-UX and Solaris.
-        hpux* | solaris*) gl_cv_func_mbrtowc_retval="guessing no" ;;
-                          # Guess yes otherwise.
-        *)                gl_cv_func_mbrtowc_retval="guessing yes" ;;
+                                   # Guess no on HP-UX, Solaris, native Windows.
+        hpux* | solaris* | mingw*) gl_cv_func_mbrtowc_retval="guessing no" ;;
+                                   # Guess yes otherwise.
+        *)                         gl_cv_func_mbrtowc_retval="guessing yes" ;;
       esac
 changequote([,])dnl
-      if test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none; then
+      if test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none \
+         || { case "$host_os" in mingw*) true;; *) false;; esac; }; then
         AC_RUN_IFELSE(
           [AC_LANG_SOURCE([[
 #include <locale.h>
@@ -378,6 +387,7 @@ changequote([,])dnl
 int main ()
 {
   int result = 0;
+  int found_some_locale = 0;
   /* This fails on Solaris.  */
   if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
     {
@@ -392,6 +402,7 @@ int main ()
           if (mbrtowc (&wc, input + 2, 5, &state) != 1)
             result |= 1;
         }
+      found_some_locale = 1;
     }
   /* This fails on HP-UX 11.11.  */
   if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
@@ -407,11 +418,61 @@ int main ()
           if (mbrtowc (&wc, input + 2, 5, &state) != 2)
             result |= 2;
         }
+      found_some_locale = 1;
     }
-  return result;
+  /* This fails on native Windows.  */
+  if (setlocale (LC_ALL, "Japanese_Japan.932") != NULL)
+    {
+      char input[] = "<\223\372\226\173\214\352>"; /* "<日本語>" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2))
+        {
+          input[3] = '\0';
+          if (mbrtowc (&wc, input + 4, 4, &state) != 1)
+            result |= 4;
+        }
+      found_some_locale = 1;
+    }
+  if (setlocale (LC_ALL, "Chinese_Taiwan.950") != NULL)
+    {
+      char input[] = "<\244\351\245\273\273\171>"; /* "<日本語>" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2))
+        {
+          input[3] = '\0';
+          if (mbrtowc (&wc, input + 4, 4, &state) != 1)
+            result |= 8;
+        }
+      found_some_locale = 1;
+    }
+  if (setlocale (LC_ALL, "Chinese_China.936") != NULL)
+    {
+      char input[] = "<\310\325\261\276\325\132>"; /* "<日本語>" */
+      mbstate_t state;
+      wchar_t wc;
+
+      memset (&state, '\0', sizeof (mbstate_t));
+      if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2))
+        {
+          input[3] = '\0';
+          if (mbrtowc (&wc, input + 4, 4, &state) != 1)
+            result |= 16;
+        }
+      found_some_locale = 1;
+    }
+  return (found_some_locale ? result : 77);
 }]])],
           [gl_cv_func_mbrtowc_retval=yes],
-          [gl_cv_func_mbrtowc_retval=no],
+          [if test $? != 77; then
+             gl_cv_func_mbrtowc_retval=no
+           fi
+          ],
           [:])
       fi
     ])