Adding upstream version 5.2.37.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

lib/readline/compat.c

@@ -0,0 +1,106 @@
+/* compat.c -- backwards compatibility functions. */
+
+/* Copyright (C) 2000-2021 Free Software Foundation, Inc.
+
+   This file is part of the GNU Readline Library (Readline), a library
+   for reading lines of text with interactive input and history editing.
+
+   Readline 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.
+
+   Readline 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 Readline.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+#  include <config.h>
+#endif
+
+#include <stdio.h>
+
+#include "rlstdc.h"
+#include "rltypedefs.h"
+
+extern void rl_free_undo_list (void);
+extern int rl_maybe_save_line (void);
+extern int rl_maybe_unsave_line (void);
+extern int rl_maybe_replace_line (void);
+
+extern int rl_crlf (void);
+extern int rl_ding (void);
+extern int rl_alphabetic (int);
+
+extern char **rl_completion_matches (const char *, rl_compentry_func_t *);
+extern char *rl_username_completion_function (const char *, int);
+extern char *rl_filename_completion_function (const char *, int);
+
+/* Provide backwards-compatible entry points for old function names. */
+
+void
+free_undo_list (void)
+{
+  rl_free_undo_list ();
+}
+
+int
+maybe_replace_line (void)
+{
+  return rl_maybe_replace_line ();
+}
+
+int
+maybe_save_line (void)
+{
+  return rl_maybe_save_line ();
+}
+
+int
+maybe_unsave_line (void)
+{
+  return rl_maybe_unsave_line ();
+}
+
+int
+ding (void)
+{
+  return rl_ding ();
+}
+
+int
+crlf (void)
+{
+  return rl_crlf ();
+}
+
+int
+alphabetic (int c)
+{
+  return rl_alphabetic (c);
+}
+
+char **
+completion_matches (const char *s, rl_compentry_func_t *f)
+{
+  return rl_completion_matches (s, f);
+}
+
+char *
+username_completion_function (const char *s, int i)
+{
+  return rl_username_completion_function (s, i);
+}
+
+char *
+filename_completion_function (const char *s, int i)
+{
+  return rl_filename_completion_function (s, i);
+}