--- /dev/null
+/* classes: h_files */
+
+#ifndef SCM_LANG_H
+#define SCM_LANG_H
+
+/* Copyright (C) 1998, 2004, 2006 Free Software Foundation, Inc.
+ *
+ * This library 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 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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 library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+\f
+
+#include "libguile/__scm.h"
+
+\f
+
+#if SCM_ENABLE_ELISP
+
+#define SCM_NILP(x) (scm_is_eq ((x), SCM_ELISP_NIL))
+
+SCM_API void scm_init_lang (void);
+
+#else /* ! SCM_ENABLE_ELISP */
+
+#define SCM_NILP(x) 0
+
+#endif /* ! SCM_ENABLE_ELISP */
+
+#define SCM_NULL_OR_NIL_P(x) (scm_is_null (x) || SCM_NILP (x))
+
+#endif /* SCM_LANG_H */
+
+/*
+ Local Variables:
+ c-file-style: "gnu"
+ End:
+*/