--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2011-03-26  Bruno Haible  <bruno@clisp.org>
+
+	New module 'unictype/bidiclass-longname'.
+	* lib/unictype.in.h (uc_bidi_class_long_name): New declaration.
+	* lib/unictype/bidi_longname.c: New file.
+	* modules/unictype/bidiclass-longname: New file.
+	* modules/unictype/bidiclass-all (Depends-on): Add
+	unictype/bidiclass-longname.
+
 2011-03-26  Bruno Haible  <bruno@clisp.org>
 
 	unictype/bidi*: Rename modules.

--- a/lib/unictype.in.h
+++ b/lib/unictype.in.h
@@ -312,6 +312,10 @@
 extern const char *
        uc_bidi_category_name (int category);
 
+/* Return the long name of a bidi class.  */
+extern const char *
+       uc_bidi_class_long_name (int bidi_class);
+
 /* Return the bidi class given by name, e.g. "LRE".  */
 extern int
        uc_bidi_class_byname (const char *bidi_class_name);

new file mode 100644
--- /dev/null
+++ b/lib/unictype/bidi_longname.c
@@ -0,0 +1,53 @@
+/* Bidi classes of Unicode characters.
+   Copyright (C) 2002, 2006, 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 Lesser 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "unictype.h"
+
+static const char u_bidi_class_long_name[19][24] =
+{
+  "Left To Right",
+  "Left To Right Embedding",
+  "Left To Right Override",
+  "Right To Left",
+  "Arabic Letter",
+  "Right To Left Embedding",
+  "Right To Left Override",
+  "Pop Directional Format",
+  "European Number",
+  "European Separator",
+  "European Terminator",
+  "Arabic Number",
+  "Common Separator",
+  "Nonspacing Mark",
+  "Boundary Neutral",
+  "Paragraph Separator",
+  "Segment Separator",
+  "White Space",
+  "Other Neutral"
+};
+
+const char *
+uc_bidi_class_long_name (int bidi_class)
+{
+  if (bidi_class >= 0
+      && bidi_class < sizeof (u_bidi_class_long_name) / sizeof (u_bidi_class_long_name[0]))
+    return u_bidi_class_long_name[bidi_class];
+  return NULL;
+}

--- a/modules/unictype/bidiclass-all
+++ b/modules/unictype/bidiclass-all
@@ -6,6 +6,7 @@
 Depends-on:
 unictype/base
 unictype/bidiclass-byname
+unictype/bidiclass-longname
 unictype/bidiclass-name
 unictype/bidiclass-of
 unictype/bidiclass-test

new file mode 100644
--- /dev/null
+++ b/modules/unictype/bidiclass-longname
@@ -0,0 +1,25 @@
+Description:
+Name of Unicode character bidi class.
+
+Files:
+lib/unictype/bidi_longname.c
+
+Depends-on:
+unictype/base
+
+configure.ac:
+gl_LIBUNISTRING_MODULE([0.9.4], [unictype/bidiclass-longname])
+
+Makefile.am:
+if LIBUNISTRING_COMPILE_UNICTYPE_BIDICLASS_LONGNAME
+lib_SOURCES += unictype/bidi_longname.c
+endif
+
+Include:
+"unictype.h"
+
+License:
+LGPL
+
+Maintainer:
+Bruno Haible