--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,18 @@
+2011-02-06  Bruno Haible  <bruno@clisp.org>
+
+	New module 'wctype'.
+	* modules/wctype: Change to represent the wctype() substitute.
+	* lib/wctype.in.h (wctype): New declaration.
+	* lib/wctype.c: New file.
+	* lib/wctype-impl.h: New file.
+	* m4/wctype.m4: New file.
+	* m4/wctype_h.m4 (gl_WCTYPE_H): Test whether wctype is declared.
+	(gl_WCTYPE_H_DEFAULTS): Initialize GNULIB_WCTYPE.
+	* modules/wctype-h (Makefile.am): Substitute GNULIB_WCTYPE.
+	* tests/test-wctype-h-c++.cc: Test the declaration of wctype.
+	* doc/posix-functions/wctype.texi: Mention the new module and the
+	HP-UX 11.00 problem.
+
 2011-02-06  Bruno Haible  <bruno@clisp.org>
 
 	wctype-h: Ensure wctype_t and wctrans_t are defined.

--- a/doc/posix-functions/wctype.texi
+++ b/doc/posix-functions/wctype.texi
@@ -4,18 +4,22 @@
 
 POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/wctype.html}
 
-Gnulib module: ---
+Gnulib module: wctype
 
 Portability problems fixed by Gnulib:
 @itemize
+@item
+This function is missing on some platforms:
+IRIX 5.3, Solaris 2.5.1.
+@item
+This function is declared in @code{<wchar.h>}, not in @code{<wctype.h>}, on
+some platforms:
+HP-UX 11.00.
 @end itemize
 
 Portability problems not fixed by Gnulib:
 @itemize
 @item
-This function is missing on some platforms:
-IRIX 5.3, Solaris 2.5.1, mingw.
-@item
 On AIX and Windows platforms, @code{wchar_t} is a 16-bit type and therefore cannot
 accommodate all Unicode characters.
 @end itemize

new file mode 100644
--- /dev/null
+++ b/lib/wctype-impl.h
@@ -0,0 +1,96 @@
+/* Get descriptor for a wide character property.
+   Copyright (C) 2011 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2011.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+wctype_t
+wctype (const char* name)
+{
+  switch (name[0])
+    {
+    case 'a':
+      switch (name[1])
+        {
+        case 'l':
+          switch (name[2])
+            {
+            case 'n':
+              if (strcmp (name + 3, "um") == 0)
+                return (wctype_t) iswalnum;
+              break;
+            case 'p':
+              if (strcmp (name + 3, "ha") == 0)
+                return (wctype_t) iswalpha;
+              break;
+            default:
+              break;
+            }
+          break;
+        default:
+          break;
+        }
+      break;
+    case 'b':
+      if (strcmp (name + 1, "lank") == 0)
+        return (wctype_t) iswblank;
+      break;
+    case 'c':
+      if (strcmp (name + 1, "ntrl") == 0)
+        return (wctype_t) iswcntrl;
+      break;
+    case 'd':
+      if (strcmp (name + 1, "igit") == 0)
+        return (wctype_t) iswdigit;
+      break;
+    case 'g':
+      if (strcmp (name + 1, "raph") == 0)
+        return (wctype_t) iswgraph;
+      break;
+    case 'l':
+      if (strcmp (name + 1, "ower") == 0)
+        return (wctype_t) iswlower;
+      break;
+    case 'p':
+      switch (name[1])
+        {
+        case 'r':
+          if (strcmp (name + 2, "int") == 0)
+            return (wctype_t) iswprint;
+          break;
+        case 'u':
+          if (strcmp (name + 2, "nct") == 0)
+            return (wctype_t) iswpunct;
+          break;
+        default:
+          break;
+        }
+      break;
+    case 's':
+      if (strcmp (name + 1, "pace") == 0)
+        return (wctype_t) iswspace;
+      break;
+    case 'u':
+      if (strcmp (name + 1, "pper") == 0)
+        return (wctype_t) iswupper;
+      break;
+    case 'x':
+      if (strcmp (name + 1, "digit") == 0)
+        return (wctype_t) iswxdigit;
+      break;
+    default:
+      break;
+    }
+  return NULL;
+}

new file mode 100644
--- /dev/null
+++ b/lib/wctype.c
@@ -0,0 +1,25 @@
+/* Get descriptor for a wide character property.
+   Copyright (C) 2011 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2011.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <wctype.h>
+
+#include <string.h>
+
+#include "wctype-impl.h"

--- a/lib/wctype.in.h
+++ b/lib/wctype.in.h
@@ -384,6 +384,21 @@
 # endif
 #endif
 
+/* Get a descriptor for a wide character property.  */
+#if @GNULIB_WCTYPE@
+# if !@HAVE_WCTYPE_T@
+_GL_FUNCDECL_SYS (wctype, wctype_t, (const char *name));
+# endif
+_GL_CXXALIAS_SYS (wctype, wctype_t, (const char *name));
+_GL_CXXALIASWARN (wctype);
+#elif defined GNULIB_POSIXCHECK
+# undef wctype
+# if HAVE_RAW_DECL_WCTYPE
+_GL_WARN_ON_USE (wctype, "wctype is unportable - "
+                 "use gnulib module wctype for portability");
+# endif
+#endif
+
 #if @REPLACE_ISWCNTRL@ || defined __MINGW32__
 _GL_CXXALIAS_RPL (towlower, wint_t, (wint_t wc));
 _GL_CXXALIAS_RPL (towupper, wint_t, (wint_t wc));

new file mode 100644
--- /dev/null
+++ b/m4/wctype.m4
@@ -0,0 +1,14 @@
+# wctype.m4 serial 1
+dnl Copyright (C) 2011 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.
+
+AC_DEFUN([gl_FUNC_WCTYPE],
+[
+  AC_REQUIRE([gl_WCTYPE_H_DEFAULTS])
+  AC_REQUIRE([gl_WCTYPE_H])
+  if test $HAVE_WCTYPE_T = 0; then
+    AC_LIBOBJ([wctype])
+  fi
+])

--- a/m4/wctype_h.m4
+++ b/m4/wctype_h.m4
@@ -130,6 +130,24 @@
   if test $gl_cv_type_wctrans_t = no; then
     HAVE_WCTRANS_T=0
   fi
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[
+/* 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>.  */
+#if !(defined __GLIBC__ && !defined __UCLIBC__)
+# include <stddef.h>
+# include <stdio.h>
+# include <time.h>
+# include <wchar.h>
+#endif
+#include <wctype.h>
+    ]],
+    [wctype
+    ])
 ])
 
 AC_DEFUN([gl_WCTYPE_MODULE_INDICATOR],
@@ -144,6 +162,7 @@
 AC_DEFUN([gl_WCTYPE_H_DEFAULTS],
 [
   GNULIB_ISWBLANK=0;    AC_SUBST([GNULIB_ISWBLANK])
+  GNULIB_WCTYPE=0;      AC_SUBST([GNULIB_WCTYPE])
   dnl Assume proper GNU behavior unless another module says otherwise.
   HAVE_ISWBLANK=1;      AC_SUBST([HAVE_ISWBLANK])
   HAVE_WCTYPE_T=1;      AC_SUBST([HAVE_WCTYPE_T])

--- a/modules/wctype
+++ b/modules/wctype
@@ -1,12 +1,24 @@
 Description:
-A <wctype.h> that conforms better to C99.
+wctype() function: get descriptor for a wide character property.
+
+Status:
+obsolete
+
+Notice:
+This module is obsolete.
 
 Files:
+lib/wctype.c
+lib/wctype-impl.h
+m4/wctype.m4
 
 Depends-on:
 wctype-h
+iswblank
 
 configure.ac:
+gl_FUNC_WCTYPE
+gl_WCTYPE_MODULE_INDICATOR([wctype])
 
 Makefile.am:
 

--- a/modules/wctype-h
+++ b/modules/wctype-h
@@ -28,6 +28,7 @@
 	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
 	      -e 's|@''NEXT_WCTYPE_H''@|$(NEXT_WCTYPE_H)|g' \
 	      -e 's/@''GNULIB_ISWBLANK''@/$(GNULIB_ISWBLANK)/g' \
+	      -e 's/@''GNULIB_WCTYPE''@/$(GNULIB_WCTYPE)/g' \
 	      -e 's/@''HAVE_ISWBLANK''@/$(HAVE_ISWBLANK)/g' \
 	      -e 's/@''HAVE_ISWCNTRL''@/$(HAVE_ISWCNTRL)/g' \
 	      -e 's/@''HAVE_WCTYPE_T''@/$(HAVE_WCTYPE_T)/g' \

--- a/tests/test-wctype-h-c++.cc
+++ b/tests/test-wctype-h-c++.cc
@@ -39,6 +39,10 @@
 SIGNATURE_CHECK (GNULIB_NAMESPACE::iswupper, int, (wint_t));
 SIGNATURE_CHECK (GNULIB_NAMESPACE::iswxdigit, int, (wint_t));
 
+#if GNULIB_TEST_WCTYPE
+SIGNATURE_CHECK (GNULIB_NAMESPACE::wctype, wctype_t, (const char *));
+#endif
+
 SIGNATURE_CHECK (GNULIB_NAMESPACE::towlower, wint_t, (wint_t));
 SIGNATURE_CHECK (GNULIB_NAMESPACE::towupper, wint_t, (wint_t));