Adding upstream version 5.2.37.

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

builtins.h

@@ -0,0 +1,68 @@
+/* builtins.h -- What a builtin looks like, and where to find them. */
+
+/* Copyright (C) 1987-2021 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash, the Bourne Again SHell.
+
+   Bash 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.
+
+   Bash 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 Bash.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef BUILTINS_H
+#define BUILTINS_H
+
+#include "config.h"
+
+#if defined (HAVE_UNISTD_H)
+#  ifdef _MINIX
+#    include <sys/types.h>
+#  endif
+#  include <unistd.h>
+#endif
+
+#include "command.h"
+#include "general.h"
+
+#if defined (ALIAS)
+#include "alias.h"
+#endif
+
+/* Flags describing various things about a builtin. */
+#define BUILTIN_ENABLED 0x01	/* This builtin is enabled. */
+#define BUILTIN_DELETED 0x02	/* This has been deleted with enable -d. */
+#define STATIC_BUILTIN  0x04	/* This builtin is not dynamically loaded. */
+#define SPECIAL_BUILTIN 0x08	/* This is a Posix `special' builtin. */
+#define ASSIGNMENT_BUILTIN 0x10	/* This builtin takes assignment statements. */
+#define POSIX_BUILTIN	0x20	/* This builtins is special in the Posix command search order. */
+#define LOCALVAR_BUILTIN   0x40	/* This builtin creates local variables */
+#define ARRAYREF_BUILTIN 0x80	/* This builtin takes array references as arguments */
+
+#define BASE_INDENT	4
+
+/* The thing that we build the array of builtins out of. */
+struct builtin {
+  char *name;			/* The name that the user types. */
+  sh_builtin_func_t *function;	/* The address of the invoked function. */
+  int flags;			/* One of the #defines above. */
+  char * const *long_doc;	/* NULL terminated array of strings. */
+  const char *short_doc;	/* Short version of documentation. */
+  char *handle;			/* for future use */
+};
+
+/* Found in builtins.c, created by builtins/mkbuiltins. */
+extern int num_shell_builtins;	/* Number of shell builtins. */
+extern struct builtin static_shell_builtins[];
+extern struct builtin *shell_builtins;
+extern struct builtin *current_builtin;
+
+#endif /* BUILTINS_H */