This file is bind.def, from which is created bind.c.
It implements the builtin "bind" 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 1, 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; see the file COPYING.  If not, write to the Free Software
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.

$PRODUCES bind.c

$BUILTIN bind
$DEPENDS_ON READLINE
$FUNCTION bind_builtin
$SHORT_DOC bind [-lvd] [-f filename] [-q name] [keyseq:readline-function]
Bind a key sequence to a Readline function, or to a macro.  The
syntax is equivalent to that found in ~/.inputrc, but must be
passed as a single argument: bind '"\C-x\C-r": re-read-init-file'.
Arguments we accept:
  -l                 List names of functions.
  -v                 List function names and bindings.
  -d                 Dump functions and bindings such that they
                     can be read back in.
  -f  filename       Read key bindings from FILENAME.
  -q  function-name  Query about which keys invoke the named function.
$END

#include <stdio.h>
#include "../shell.h"
#include <readline/readline.h>
#include <readline/history.h>

int
bind_builtin (list)
     WORD_LIST *list;
{
  extern int bash_readline_initialized;
  int processing_args = 1;
  int return_code = EXECUTION_SUCCESS;

  begin_unwind_frame ("bind");
  unwind_protect_pointer (rl_outstream);
  rl_outstream = stdout;

  if (!bash_readline_initialized)
    initialize_readline ();
    
  while (processing_args && list && list->word->word[0] == '-')
    {
      register int i;
      extern void rl_function_dumper ();
      char *word = list->word->word;

      list = list->next;

      for (i = 1; word[i]; i++)
	{
	  switch (word[i])
	    {
	    case 'l':
	      rl_list_funmap_names (0);
	      break;

	    case 'v':
	      rl_function_dumper (0);
	      break;

	    case 'd':
	      rl_function_dumper (1);
	      break;

	    case 'f':
	      if (!list)
		{
		  builtin_error ("-f requires a file name");
		  goto error_exit;
		}
	      else
		{
		  extern int errno;
		  char *initfile;

		  initfile = list->word->word;

		  if (rl_read_init_file (initfile) != 0)
		    {
		      builtin_error ("Cannot read %s: %s",
				     initfile, strerror (errno));
		      goto error_exit;
		    }
		  else
		    list = list->next;
		}
	      break;

	    case 'q':
	      if (!list)
		{
		  builtin_error ("-q requires the name of a function");
		  goto error_exit;
		}
	      else while (list)
		{
		  extern Function *rl_named_function ();
		  extern char **rl_invoking_keyseqs ();
		  Function *function;
		  char *name, **keyseqs;

		  name = list->word->word;
		  list = list->next;

		  function = rl_named_function (name);

		  if (!function)
		    {
		      builtin_error ("Unknown function name `%s'", name);
		      goto error_exit;
		    }

		  keyseqs = rl_invoking_keyseqs (function);

		  if (!keyseqs)
		    {
		      printf ("%s is not bound to any keys.\n", name);
		    }
		  else
		    {
		      register int j;

		      printf ("%s can be invoked via ", name);

		      for (j = 0; j < 5 && keyseqs[j]; j++)
			printf ("\"%s\"%s", keyseqs[j],
				keyseqs[j + 1] ? ", " : ".\n");

		      if (keyseqs[j])
			printf ("...\n");

		      free_array (keyseqs);
		    }
		}
	      break;

	    case '-':
	      processing_args = 0;
	      break;

	    default:
	      builtin_error ("Bad argument %c", word[i]);

	    error_exit:
	      return_code = EXECUTION_FAILURE;
	      goto bind_exit;
	    }
	}
    }

  while (list)
    {
      rl_parse_and_bind (list->word->word);
      list = list->next;
    }
 bind_exit:
  run_unwind_frame ("bind");
  return (return_code);
}
