Adding upstream version 5.2.37.

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

lib/readline/histlib.h

@@ -0,0 +1,92 @@
+/* histlib.h -- internal definitions for the history library. */
+
+/* Copyright (C) 1989-2009,2021-2022 Free Software Foundation, Inc.
+
+   This file contains the GNU History Library (History), a set of
+   routines for managing the text of previously typed lines.
+
+   History 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.
+
+   History 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 History.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#if !defined (_HISTLIB_H_)
+#define _HISTLIB_H_
+
+#if defined (HAVE_STRING_H)
+#  include <string.h>
+#else
+#  include <strings.h>
+#endif /* !HAVE_STRING_H */
+
+#if !defined (STREQ)
+#define STREQ(a, b)	(((a)[0] == (b)[0]) && (strcmp ((a), (b)) == 0))
+#define STREQN(a, b, n) (((n) == 0) ? (1) \
+				    : ((a)[0] == (b)[0]) && (strncmp ((a), (b), (n)) == 0))
+#endif
+
+#ifndef savestring
+#define savestring(x) strcpy (xmalloc (1 + strlen (x)), (x))
+#endif
+
+#ifndef whitespace
+#define whitespace(c) (((c) == ' ') || ((c) == '\t'))
+#endif
+
+#ifndef _rl_digit_p
+#define _rl_digit_p(c)  ((c) >= '0' && (c) <= '9')
+#endif
+
+#ifndef _rl_digit_value
+#define _rl_digit_value(c) ((c) - '0')
+#endif
+
+#ifndef member
+#  if !defined (strchr) && !defined (__STDC__)
+extern char *strchr ();
+#  endif /* !strchr && !__STDC__ */
+#define member(c, s) ((c) ? ((char *)strchr ((s), (c)) != (char *)NULL) : 0)
+#endif
+
+#ifndef FREE
+#  define FREE(x)	if (x) free (x)
+#endif
+
+/* Possible history errors passed to hist_error. */
+#define EVENT_NOT_FOUND 0
+#define BAD_WORD_SPEC	1
+#define SUBST_FAILED	2
+#define BAD_MODIFIER	3
+#define NO_PREV_SUBST	4
+
+/* Possible definitions for history starting point specification. */
+#define NON_ANCHORED_SEARCH	0
+#define ANCHORED_SEARCH		0x01
+#define PATTERN_SEARCH		0x02
+
+/* Possible definitions for what style of writing the history file we want. */
+#define HISTORY_APPEND 0
+#define HISTORY_OVERWRITE 1
+
+/* internal extern function declarations used by other parts of the library */
+
+/* histsearch.c */
+extern int _hs_history_patsearch (const char *, int, int);
+
+/* history.c */
+extern void _hs_replace_history_data (int, histdata_t *, histdata_t *);
+extern int _hs_at_end_of_history (void);
+
+/* histfile.c */
+extern void _hs_append_history_line (int, const char *);
+
+#endif /* !_HISTLIB_H_ */