This file is builtin.def, from which is created builtin.c.
It implements the builtin "builtin" in Bash.

Copyright (C) 1987, 1989, 1991 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 2, or (at your option) any later
version.

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FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

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with Bash; see the file COPYING.  If not, write to the Free Software
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$PRODUCES builtin.c

$BUILTIN builtin
$FUNCTION builtin_builtin
$SHORT_DOC builtin [shell-builtin [arg ...]]
Run a shell builtin.  This is useful when you wish to rename a
shell builtin to be a function, but need the functionality of the
builtin within the function itself.
$END
#include <config.h>

#if defined (HAVE_UNISTD_H)
#  ifdef _MINIX
#    include <sys/types.h>
#  endif
#  include <unistd.h>
#endif

#include "../shell.h"
#include "common.h"

extern char *this_command_name;

/* Run the command mentioned in list directly, without going through the
   normal alias/function/builtin/filename lookup process. */
int
builtin_builtin (list)
     WORD_LIST *list;
{
  Function *function;
  register char *command;

  if (!list)
    return (EXECUTION_SUCCESS);

  command = (list->word->word);
#if defined (DISABLED_BUILTINS)
  function = builtin_address (command);
#else /* !DISABLED_BUILTINS */
  function = find_shell_builtin (command);
#endif /* !DISABLED_BUILTINS */

  if (!function)
    {
      builtin_error ("%s: not a shell builtin", command);
      return (EXECUTION_FAILURE);
    }
  else
    {
      this_command_name = command;
      list = list->next;
      return ((*function) (list));
    }
}
