lib/readline/readline.h

   1 /* Readline.h -- the names of functions callable from within readline. */
   2
   3 /* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
   4
   5    This file is part of the GNU Readline Library, a library for
   6    reading lines of text with interactive input and history editing.
   7
   8    The GNU Readline Library is free software; you can redistribute it
   9    and/or modify it under the terms of the GNU General Public License
  10    as published by the Free Software Foundation; either version 1, or
  11    (at your option) any later version.
  12
  13    The GNU Readline Library is distributed in the hope that it will be
  14    useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  15    of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    The GNU General Public License is often shipped with GNU software, and
  19    is generally kept in a file called COPYING or LICENSE.  If you do not
  20    have a copy of the license, write to the Free Software Foundation,
  21    675 Mass Ave, Cambridge, MA 02139, USA. */
  22
  23 #if !defined (_READLINE_H_)
  24 #define _READLINE_H_
  25
  26 #ifdef __cplusplus
  27 extern "C" {
  28 #endif
  29
  30 #if defined (READLINE_LIBRARY)
  31 #  include "rlstdc.h"
  32 #  include "keymaps.h"
  33 #  include "tilde.h"
  34 #else
  35 #  include <readline/rlstdc.h>
  36 #  include <readline/keymaps.h>
  37 #  include <readline/tilde.h>
  38 #endif
  39
  40 /* Readline data structures. */
  41
  42 /* Maintaining the state of undo.  We remember individual deletes and inserts
  43    on a chain of things to do. */
  44
  45 /* The actions that undo knows how to undo.  Notice that UNDO_DELETE means
  46    to insert some text, and UNDO_INSERT means to delete some text.   I.e.,
  47    the code tells undo what to undo, not how to undo it. */
  48 enum undo_code { UNDO_DELETE, UNDO_INSERT, UNDO_BEGIN, UNDO_END };
  49
  50 /* What an element of THE_UNDO_LIST looks like. */
  51 typedef struct undo_list {
  52   struct undo_list *next;
  53   int start, end;               /* Where the change took place. */
  54   char *text;                   /* The text to insert, if undoing a delete. */
  55   enum undo_code what;          /* Delete, Insert, Begin, End. */
  56 } UNDO_LIST;
  57
  58 /* The current undo list for RL_LINE_BUFFER. */
  59 extern UNDO_LIST *rl_undo_list;
  60
  61 /* The data structure for mapping textual names to code addresses. */
  62 typedef struct _funmap {
  63   char *name;
  64   Function *function;
  65 } FUNMAP;
  66
  67 extern FUNMAP **funmap;
  68
  69 /* **************************************************************** */
  70 /*                                                                  */
  71 /*           Functions available to bind to key sequences           */
  72 /*                                                                  */
  73 /* **************************************************************** */
  74
  75 /* Bindable commands for numeric arguments. */
  76 extern int rl_digit_argument __P((int, int));
  77 extern int rl_universal_argument __P((int, int));
  78
  79 /* Bindable commands for moving the cursor. */
  80 extern int rl_forward __P((int, int));
  81 extern int rl_backward __P((int, int));
  82 extern int rl_beg_of_line __P((int, int));
  83 extern int rl_end_of_line __P((int, int));
  84 extern int rl_forward_word __P((int, int));
  85 extern int rl_backward_word __P((int, int));
  86 extern int rl_refresh_line __P((int, int));
  87 extern int rl_clear_screen __P((int, int));
  88 extern int rl_arrow_keys __P((int, int));
  89
  90 /* Bindable commands for inserting and deleting text. */
  91 extern int rl_insert __P((int, int));
  92 extern int rl_quoted_insert __P((int, int));
  93 extern int rl_tab_insert __P((int, int));
  94 extern int rl_newline __P((int, int));
  95 extern int rl_do_lowercase_version __P((int, int));
  96 extern int rl_rubout __P((int, int));
  97 extern int rl_delete __P((int, int));
  98 extern int rl_rubout_or_delete __P((int, int));
  99 extern int rl_delete_horizontal_space __P((int, int));
 100 extern int rl_delete_or_show_completions __P((int, int));
 101 extern int rl_insert_comment __P((int, int));
 102
 103 /* Bindable commands for changing case. */
 104 extern int rl_upcase_word __P((int, int));
 105 extern int rl_downcase_word __P((int, int));
 106 extern int rl_capitalize_word __P((int, int));
 107
 108 /* Bindable commands for transposing characters and words. */
 109 extern int rl_transpose_words __P((int, int));
 110 extern int rl_transpose_chars __P((int, int));
 111
 112 /* Bindable commands for searching within a line. */
 113 extern int rl_char_search __P((int, int));
 114 extern int rl_backward_char_search __P((int, int));
 115
 116 /* Bindable commands for readline's interface to the command history. */
 117 extern int rl_beginning_of_history __P((int, int));
 118 extern int rl_end_of_history __P((int, int));
 119 extern int rl_get_next_history __P((int, int));
 120 extern int rl_get_previous_history __P((int, int));
 121
 122 /* Bindable commands for managing the mark and region. */
 123 extern int rl_set_mark __P((int, int));
 124 extern int rl_exchange_point_and_mark __P((int, int));
 125
 126 /* Bindable commands to set the editing mode (emacs or vi). */
 127 extern int rl_vi_editing_mode __P((int, int));
 128 extern int rl_emacs_editing_mode __P((int, int));
 129
 130 /* Bindable commands for managing key bindings. */
 131 extern int rl_re_read_init_file __P((int, int));
 132 extern int rl_dump_functions __P((int, int));
 133 extern int rl_dump_macros __P((int, int));
 134 extern int rl_dump_variables __P((int, int));
 135
 136 /* Bindable commands for word completion. */
 137 extern int rl_complete __P((int, int));
 138 extern int rl_possible_completions __P((int, int));
 139 extern int rl_insert_completions __P((int, int));
 140 extern int rl_menu_complete __P((int, int));
 141
 142 /* Bindable commands for killing and yanking text, and managing the kill ring. */
 143 extern int rl_kill_word __P((int, int));
 144 extern int rl_backward_kill_word __P((int, int));
 145 extern int rl_kill_line __P((int, int));
 146 extern int rl_backward_kill_line __P((int, int));
 147 extern int rl_kill_full_line __P((int, int));
 148 extern int rl_unix_word_rubout __P((int, int));
 149 extern int rl_unix_line_discard __P((int, int));
 150 extern int rl_copy_region_to_kill __P((int, int));
 151 extern int rl_kill_region __P((int, int));
 152 extern int rl_copy_forward_word __P((int, int));
 153 extern int rl_copy_backward_word __P((int, int));
 154 extern int rl_yank __P((int, int));
 155 extern int rl_yank_pop __P((int, int));
 156 extern int rl_yank_nth_arg __P((int, int));
 157 extern int rl_yank_last_arg __P((int, int));
 158 /* Not available unless __CYGWIN32__ is defined. */
 159 #ifdef __CYGWIN32__
 160 extern int rl_paste_from_clipboard __P((int, int));
 161 #endif
 162
 163 /* Bindable commands for incremental searching. */
 164 extern int rl_reverse_search_history __P((int, int));
 165 extern int rl_forward_search_history __P((int, int));
 166
 167 /* Bindable keyboard macro commands. */
 168 extern int rl_start_kbd_macro __P((int, int));
 169 extern int rl_end_kbd_macro __P((int, int));
 170 extern int rl_call_last_kbd_macro __P((int, int));
 171
 172 /* Bindable undo commands. */
 173 extern int rl_revert_line __P((int, int));
 174 extern int rl_undo_command __P((int, int));
 175
 176 /* Bindable tilde expansion commands. */
 177 extern int rl_tilde_expand __P((int, int));
 178
 179 /* Bindable terminal control commands. */
 180 extern int rl_restart_output __P((int, int));
 181 extern int rl_stop_output __P((int, int));
 182
 183 /* Miscellaneous bindable commands. */
 184 extern int rl_abort __P((int, int));
 185 extern int rl_tty_status __P((int, int));
 186
 187 /* Bindable commands for incremental and non-incremental history searching. */
 188 extern int rl_history_search_forward __P((int, int));
 189 extern int rl_history_search_backward __P((int, int));
 190 extern int rl_noninc_forward_search __P((int, int));
 191 extern int rl_noninc_reverse_search __P((int, int));
 192 extern int rl_noninc_forward_search_again __P((int, int));
 193 extern int rl_noninc_reverse_search_again __P((int, int));
 194
 195 /* Not available unless readline is compiled -DPAREN_MATCHING. */
 196 extern int rl_insert_close __P((int, int));
 197
 198 /* Not available unless READLINE_CALLBACKS is defined. */
 199 extern void rl_callback_handler_install __P((char *, VFunction *));
 200 extern void rl_callback_read_char __P((void));
 201 extern void rl_callback_handler_remove __P((void));
 202
 203 /* Things for vi mode. Not available unless readline is compiled -DVI_MODE. */
 204 /* VI-mode bindable commands. */
 205 extern int rl_vi_redo __P((int, int));
 206 extern int rl_vi_undo __P((int, int));
 207 extern int rl_vi_yank_arg __P((int, int));
 208 extern int rl_vi_fetch_history __P((int, int));
 209 extern int rl_vi_search_again __P((int, int));
 210 extern int rl_vi_search __P((int, int));
 211 extern int rl_vi_complete __P((int, int));
 212 extern int rl_vi_tilde_expand __P((int, int));
 213 extern int rl_vi_prev_word __P((int, int));
 214 extern int rl_vi_next_word __P((int, int));
 215 extern int rl_vi_end_word __P((int, int));
 216 extern int rl_vi_insert_beg __P((int, int));
 217 extern int rl_vi_append_mode __P((int, int));
 218 extern int rl_vi_append_eol __P((int, int));
 219 extern int rl_vi_eof_maybe __P((int, int));
 220 extern int rl_vi_insertion_mode __P((int, int));
 221 extern int rl_vi_movement_mode __P((int, int));
 222 extern int rl_vi_arg_digit __P((int, int));
 223 extern int rl_vi_change_case __P((int, int));
 224 extern int rl_vi_put __P((int, int));
 225 extern int rl_vi_column __P((int, int));
 226 extern int rl_vi_delete_to __P((int, int));
 227 extern int rl_vi_change_to __P((int, int));
 228 extern int rl_vi_yank_to __P((int, int));
 229 extern int rl_vi_delete __P((int, int));
 230 extern int rl_vi_back_to_indent __P((int, int));
 231 extern int rl_vi_first_print __P((int, int));
 232 extern int rl_vi_char_search __P((int, int));
 233 extern int rl_vi_match __P((int, int));
 234 extern int rl_vi_change_char __P((int, int));
 235 extern int rl_vi_subst __P((int, int));
 236 extern int rl_vi_overstrike __P((int, int));
 237 extern int rl_vi_overstrike_delete __P((int, int));
 238 extern int rl_vi_replace __P((int, int));
 239 extern int rl_vi_set_mark __P((int, int));
 240 extern int rl_vi_goto_mark __P((int, int));
 241
 242 /* VI-mode utility functions. */
 243 extern int rl_vi_check __P((void));
 244 extern int rl_vi_domove __P((int, int *));
 245 extern int rl_vi_bracktype __P((int));
 246
 247 /* VI-mode pseudo-bindable commands, used as utility functions. */
 248 extern int rl_vi_fWord __P((int, int));
 249 extern int rl_vi_bWord __P((int, int));
 250 extern int rl_vi_eWord __P((int, int));
 251 extern int rl_vi_fword __P((int, int));
 252 extern int rl_vi_bword __P((int, int));
 253 extern int rl_vi_eword __P((int, int));
 254
 255 /* **************************************************************** */
 256 /*                                                                  */
 257 /*                      Well Published Functions                    */
 258 /*                                                                  */
 259 /* **************************************************************** */
 260
 261 /* Readline functions. */
 262 /* Read a line of input.  Prompt with PROMPT.  A NULL PROMPT means none. */
 263 extern char *readline __P((char *));
 264
 265 extern int rl_initialize __P((void));
 266
 267 extern int rl_discard_argument __P((void));
 268
 269 /* Utility functions to bind keys to readline commands. */
 270 extern int rl_add_defun __P((char *, Function *, int));
 271 extern int rl_bind_key __P((int, Function *));
 272 extern int rl_bind_key_in_map __P((int, Function *, Keymap));
 273 extern int rl_unbind_key __P((int));
 274 extern int rl_unbind_key_in_map __P((int, Keymap));
 275 extern int rl_unbind_function_in_map __P((Function *, Keymap));
 276 extern int rl_unbind_command_in_map __P((char *, Keymap));
 277 extern int rl_set_key __P((char *, Function *, Keymap));
 278 extern int rl_generic_bind __P((int, char *, char *, Keymap));
 279 extern int rl_variable_bind __P((char *, char *));
 280
 281 /* Backwards compatibility, use rl_generic_bind instead. */
 282 extern int rl_macro_bind __P((char *, char *, Keymap));
 283
 284 /* Undocumented in the texinfo manual; not really useful to programs. */
 285 extern int rl_translate_keyseq __P((char *, char *, int *));
 286 extern char *rl_untranslate_keyseq __P((int));
 287
 288 extern Function *rl_named_function __P((char *));
 289 extern Function *rl_function_of_keyseq __P((char *, Keymap, int *));
 290
 291 extern void rl_list_funmap_names __P((void));
 292 extern char **rl_invoking_keyseqs_in_map __P((Function *, Keymap));
 293 extern char **rl_invoking_keyseqs __P((Function *));
 294
 295 extern void rl_function_dumper __P((int));
 296 extern void rl_macro_dumper __P((int));
 297 extern void rl_variable_dumper __P((int));
 298
 299 extern int rl_read_init_file __P((char *));
 300 extern int rl_parse_and_bind __P((char *));
 301
 302 /* Functions for manipulating keymaps. */
 303 extern Keymap rl_make_bare_keymap __P((void));
 304 extern Keymap rl_copy_keymap __P((Keymap));
 305 extern Keymap rl_make_keymap __P((void));
 306 extern void rl_discard_keymap __P((Keymap));
 307
 308 extern Keymap rl_get_keymap_by_name __P((char *));
 309 extern char *rl_get_keymap_name __P((Keymap));
 310 extern void rl_set_keymap __P((Keymap));
 311 extern Keymap rl_get_keymap __P((void));
 312 extern void rl_set_keymap_from_edit_mode __P((void));
 313 extern char *rl_get_keymap_name_from_edit_mode __P((void));
 314
 315 /* Functions for manipulating the funmap, which maps command names to functions. */
 316 extern int rl_add_funmap_entry __P((char *, Function *));
 317 extern void rl_initialize_funmap __P((void));
 318 extern char **rl_funmap_names __P((void));
 319
 320 /* Utility functions for managing keyboard macros. */
 321 extern void rl_push_macro_input __P((char *));
 322
 323 /* Functions for undoing, from undo.c */
 324 extern void rl_add_undo __P((enum undo_code, int, int, char *));
 325 extern void free_undo_list __P((void));
 326 extern int rl_do_undo __P((void));
 327 extern int rl_begin_undo_group __P((void));
 328 extern int rl_end_undo_group __P((void));
 329 extern int rl_modifying __P((int, int));
 330
 331 /* Functions for redisplay. */
 332 extern void rl_redisplay __P((void));
 333 extern int rl_on_new_line __P((void));
 334 extern int rl_forced_update_display __P((void));
 335 extern int rl_clear_message __P((void));
 336 extern int rl_reset_line_state __P((void));
 337
 338 #if defined (__STDC__) && defined (USE_VARARGS) && defined (PREFER_STDARG)
 339 extern int rl_message (const char *, ...);
 340 #else
 341 extern int rl_message ();
 342 #endif
 343
 344 /* Undocumented in texinfo manual. */
 345 extern int rl_show_char __P((int));
 346 extern int rl_character_len __P((int, int));
 347 extern int crlf __P((void));
 348
 349 /* Save and restore internal prompt redisplay information. */
 350 extern void rl_save_prompt __P((void));
 351 extern void rl_restore_prompt __P((void));
 352
 353 /* Modifying text. */
 354 extern int rl_insert_text __P((char *));
 355 extern int rl_delete_text __P((int, int));
 356 extern int rl_kill_text __P((int, int));
 357 extern char *rl_copy_text __P((int, int));
 358
 359 /* Terminal and tty mode management. */
 360 extern void rl_prep_terminal __P((int));
 361 extern void rl_deprep_terminal __P((void));
 362 extern void rltty_set_default_bindings __P((Keymap));
 363
 364 extern int rl_reset_terminal __P((char *));
 365 extern void rl_resize_terminal __P((void));
 366
 367 /* `Public' utility functions . */
 368 extern void rl_extend_line_buffer __P((int));
 369 extern int ding __P((void));
 370
 371 /* Functions for character input. */
 372 extern int rl_stuff_char __P((int));
 373 extern int rl_execute_next __P((int));
 374 extern int rl_read_key __P((void));
 375 extern int rl_getc __P((FILE *));
 376
 377 /* Readline signal handling, from signals.c */
 378 extern int rl_set_signals __P((void));
 379 extern int rl_clear_signals __P((void));
 380 extern void rl_cleanup_after_signal __P((void));
 381 extern void rl_reset_after_signal __P((void));
 382 extern void rl_free_line_state __P((void));
 383
 384 /* Undocumented. */
 385 extern int rl_expand_prompt __P((char *));
 386
 387 extern int maybe_save_line __P((void));
 388 extern int maybe_unsave_line __P((void));
 389 extern int maybe_replace_line __P((void));
 390
 391 /* Completion functions. */
 392 extern int rl_complete_internal __P((int));
 393 extern void rl_display_match_list __P((char **, int, int));
 394
 395 extern char **completion_matches __P((char *, CPFunction *));
 396 extern char *username_completion_function __P((char *, int));
 397 extern char *filename_completion_function __P((char *, int));
 398
 399 /* **************************************************************** */
 400 /*                                                                  */
 401 /*                      Well Published Variables                    */
 402 /*                                                                  */
 403 /* **************************************************************** */
 404
 405 /* The version of this incarnation of the readline library. */
 406 extern char *rl_library_version;
 407
 408 /* The name of the calling program.  You should initialize this to
 409    whatever was in argv[0].  It is used when parsing conditionals. */
 410 extern char *rl_readline_name;
 411
 412 /* The prompt readline uses.  This is set from the argument to
 413    readline (), and should not be assigned to directly. */
 414 extern char *rl_prompt;
 415
 416 /* The line buffer that is in use. */
 417 extern char *rl_line_buffer;
 418
 419 /* The location of point, and end. */
 420 extern int rl_point, rl_end;
 421
 422 /* The mark, or saved cursor position. */
 423 extern int rl_mark;
 424
 425 /* Flag to indicate that readline has finished with the current input
 426    line and should return it. */
 427 extern int rl_done;
 428
 429 /* If set to a character value, that will be the next keystroke read. */
 430 extern int rl_pending_input;
 431
 432 /* Non-zero if we called this function from _rl_dispatch().  It's present
 433    so functions can find out whether they were called from a key binding
 434    or directly from an application. */
 435 extern int rl_dispatching;
 436
 437 /* The name of the terminal to use. */
 438 extern char *rl_terminal_name;
 439
 440 /* The input and output streams. */
 441 extern FILE *rl_instream, *rl_outstream;
 442
 443 /* If non-zero, then this is the address of a function to call just
 444    before readline_internal () prints the first prompt. */
 445 extern Function *rl_startup_hook;
 446
 447 /* If non-zero, this is the address of a function to call just before
 448    readline_internal_setup () returns and readline_internal starts
 449    reading input characters. */
 450 extern Function *rl_pre_input_hook;
 451
 452 /* The address of a function to call periodically while Readline is
 453    awaiting character input, or NULL, for no event handling. */
 454 extern Function *rl_event_hook;
 455
 456 extern Function *rl_getc_function;
 457 extern VFunction *rl_redisplay_function;
 458 extern VFunction *rl_prep_term_function;
 459 extern VFunction *rl_deprep_term_function;
 460
 461 /* Dispatch variables. */
 462 extern Keymap rl_executing_keymap;
 463 extern Keymap rl_binding_keymap;
 464
 465 /* Display variables. */
 466 /* If non-zero, readline will erase the entire line, including any prompt,
 467    if the only thing typed on an otherwise-blank line is something bound to
 468    rl_newline. */
 469 extern int rl_erase_empty_line;
 470
 471 /* Variables to control readline signal handling. */
 472 /* If non-zero, readline will install its own signal handlers for
 473    SIGINT, SIGTERM, SIGQUIT, SIGALRM, SIGTSTP, SIGTTIN, and SIGTTOU. */
 474 extern int rl_catch_signals;
 475
 476 /* If non-zero, readline will install a signal handler for SIGWINCH
 477    that also attempts to call any calling application's SIGWINCH signal
 478    handler.  Note that the terminal is not cleaned up before the
 479    application's signal handler is called; use rl_cleanup_after_signal()
 480    to do that. */
 481 extern int rl_catch_sigwinch;
 482
 483 /* Completion variables. */
 484 /* Pointer to the generator function for completion_matches ().
 485    NULL means to use filename_entry_function (), the default filename
 486    completer. */
 487 extern Function *rl_completion_entry_function;
 488
 489 /* If rl_ignore_some_completions_function is non-NULL it is the address
 490    of a function to call after all of the possible matches have been
 491    generated, but before the actual completion is done to the input line.
 492    The function is called with one argument; a NULL terminated array
 493    of (char *).  If your function removes any of the elements, they
 494    must be free()'ed. */
 495 extern Function *rl_ignore_some_completions_function;
 496
 497 /* Pointer to alternative function to create matches.
 498    Function is called with TEXT, START, and END.
 499    START and END are indices in RL_LINE_BUFFER saying what the boundaries
 500    of TEXT are.
 501    If this function exists and returns NULL then call the value of
 502    rl_completion_entry_function to try to match, otherwise use the
 503    array of strings returned. */
 504 extern CPPFunction *rl_attempted_completion_function;
 505
 506 /* The basic list of characters that signal a break between words for the
 507    completer routine.  The initial contents of this variable is what
 508    breaks words in the shell, i.e. "n\"\\'`@$>". */
 509 extern char *rl_basic_word_break_characters;
 510
 511 /* The list of characters that signal a break between words for
 512    rl_complete_internal.  The default list is the contents of
 513    rl_basic_word_break_characters.  */
 514 extern char *rl_completer_word_break_characters;
 515
 516 /* List of characters which can be used to quote a substring of the line.
 517    Completion occurs on the entire substring, and within the substring
 518    rl_completer_word_break_characters are treated as any other character,
 519    unless they also appear within this list. */
 520 extern char *rl_completer_quote_characters;
 521
 522 /* List of quote characters which cause a word break. */
 523 extern char *rl_basic_quote_characters;
 524
 525 /* List of characters that need to be quoted in filenames by the completer. */
 526 extern char *rl_filename_quote_characters;
 527
 528 /* List of characters that are word break characters, but should be left
 529    in TEXT when it is passed to the completion function.  The shell uses
 530    this to help determine what kind of completing to do. */
 531 extern char *rl_special_prefixes;
 532
 533 /* If non-zero, then this is the address of a function to call when
 534    completing on a directory name.  The function is called with
 535    the address of a string (the current directory name) as an arg. */
 536 extern Function *rl_directory_completion_hook;
 537
 538 /* Backwards compatibility with previous versions of readline. */
 539 #define rl_symbolic_link_hook rl_directory_completion_hook
 540
 541 /* If non-zero, then this is the address of a function to call when
 542    completing a word would normally display the list of possible matches.
 543    This function is called instead of actually doing the display.
 544    It takes three arguments: (char **matches, int num_matches, int max_length)
 545    where MATCHES is the array of strings that matched, NUM_MATCHES is the
 546    number of strings in that array, and MAX_LENGTH is the length of the
 547    longest string in that array. */
 548 extern VFunction *rl_completion_display_matches_hook;
 549
 550 /* Non-zero means that the results of the matches are to be treated
 551    as filenames.  This is ALWAYS zero on entry, and can only be changed
 552    within a completion entry finder function. */
 553 extern int rl_filename_completion_desired;
 554
 555 /* Non-zero means that the results of the matches are to be quoted using
 556    double quotes (or an application-specific quoting mechanism) if the
 557    filename contains any characters in rl_word_break_chars.  This is
 558    ALWAYS non-zero on entry, and can only be changed within a completion
 559    entry finder function. */
 560 extern int rl_filename_quoting_desired;
 561
 562 /* Set to a function to quote a filename in an application-specific fashion.
 563    Called with the text to quote, the type of match found (single or multiple)
 564    and a pointer to the quoting character to be used, which the function can
 565    reset if desired. */
 566 extern CPFunction *rl_filename_quoting_function;
 567
 568 /* Function to call to remove quoting characters from a filename.  Called
 569    before completion is attempted, so the embedded quotes do not interfere
 570    with matching names in the file system. */
 571 extern CPFunction *rl_filename_dequoting_function;
 572
 573 /* Function to call to decide whether or not a word break character is
 574    quoted.  If a character is quoted, it does not break words for the
 575    completer. */
 576 extern Function *rl_char_is_quoted_p;
 577
 578 /* Non-zero means to suppress normal filename completion after the
 579    user-specified completion function has been called. */
 580 extern int rl_attempted_completion_over;
 581
 582 /* Set to a character describing the type of completion being attempted by
 583    rl_complete_internal; available for use by application completion
 584    functions. */
 585 extern int rl_completion_type;
 586
 587 /* Character appended to completed words when at the end of the line.  The
 588    default is a space.  Nothing is added if this is '\0'. */
 589 extern int rl_completion_append_character;
 590
 591 /* Up to this many items will be displayed in response to a
 592    possible-completions call.  After that, we ask the user if she
 593    is sure she wants to see them all.  The default value is 100. */
 594 extern int rl_completion_query_items;
 595
 596 /* If non-zero, then disallow duplicates in the matches. */
 597 extern int rl_ignore_completion_duplicates;
 598
 599 /* If this is non-zero, completion is (temporarily) inhibited, and the
 600    completion character will be inserted as any other. */
 601 extern int rl_inhibit_completion;
 602
 603 /* Definitions available for use by readline clients. */
 604 #define RL_PROMPT_START_IGNORE  '\001'
 605 #define RL_PROMPT_END_IGNORE    '\002'
 606
 607 /* Possible values for do_replace argument to rl_filename_quoting_function,
 608    called by rl_complete_internal. */
 609 #define NO_MATCH        0
 610 #define SINGLE_MATCH    1
 611 #define MULT_MATCH      2
 612
 613 #if !defined (savestring)
 614 extern char *savestring ();     /* XXX backwards compatibility */
 615 #endif
 616
 617 #ifdef __cplusplus
 618 }
 619 #endif
 620
 621 #endif /* _READLINE_H_ */