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

Copyright (C) 1987, 1989, 1991 Free Software Foundation, Inc.

This file is part of GNU Bash, the Bourne Again SHell.

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the terms of the GNU General Public License as published by the Free
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version.

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

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$PRODUCES return.c

$BUILTIN return

$FUNCTION return_builtin
$SHORT_DOC return [n]
Causes a function to exit with the return value specified by N.  If N
is omitted, the return status is that of the last command.
$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 int last_command_exit_value;
extern int subshell_environment;
extern int return_catch_flag, return_catch_value;

/* If we are executing a user-defined function then exit with the value
   specified as an argument.  if no argument is given, then the last
   exit status is used. */
int
return_builtin (list)
     WORD_LIST *list;
{
  return_catch_value = list ? get_numeric_arg (list, 1) : last_command_exit_value;

  if (return_catch_flag)
    longjmp (return_catch, 1);
  else
    {
      builtin_error ("can only `return' from a function or sourced script");
      return (EXECUTION_FAILURE);
    }
}