1 /* Line completion stuff for GDB, the GNU debugger.
2 Copyright (C) 2000-2014 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 #include "expression.h"
23 #include "filenames.h" /* For DOSish file names. */
25 #include "exceptions.h"
26 #include "gdb_signals.h"
28 #include "cli/cli-decode.h"
30 /* FIXME: This is needed because of lookup_cmd_1 (). We should be
31 calling a hook instead so we eliminate the CLI dependency. */
34 /* Needed for rl_completer_word_break_characters() and for
35 rl_filename_completion_function. */
36 #include "readline/readline.h"
38 /* readline defines this. */
41 #include "completer.h"
43 /* Prototypes for local functions. */
45 char *line_completion_function (const char *text
, int matches
,
49 /* readline uses the word breaks for two things:
50 (1) In figuring out where to point the TEXT parameter to the
51 rl_completion_entry_function. Since we don't use TEXT for much,
52 it doesn't matter a lot what the word breaks are for this purpose,
53 but it does affect how much stuff M-? lists.
54 (2) If one of the matches contains a word break character, readline
55 will quote it. That's why we switch between
56 current_language->la_word_break_characters() and
57 gdb_completer_command_word_break_characters. I'm not sure when
58 we need this behavior (perhaps for funky characters in C++
61 /* Variables which are necessary for fancy command line editing. */
63 /* When completing on command names, we remove '-' from the list of
64 word break characters, since we use it in command names. If the
65 readline library sees one in any of the current completion strings,
66 it thinks that the string needs to be quoted and automatically
67 supplies a leading quote. */
68 static char *gdb_completer_command_word_break_characters
=
69 " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,";
71 /* When completing on file names, we remove from the list of word
72 break characters any characters that are commonly used in file
73 names, such as '-', '+', '~', etc. Otherwise, readline displays
74 incorrect completion candidates. */
75 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
76 /* MS-DOS and MS-Windows use colon as part of the drive spec, and most
77 programs support @foo style response files. */
78 static char *gdb_completer_file_name_break_characters
= " \t\n*|\"';?><@";
80 static char *gdb_completer_file_name_break_characters
= " \t\n*|\"';:?><";
83 /* Characters that can be used to quote completion strings. Note that
84 we can't include '"' because the gdb C parser treats such quoted
85 sequences as strings. */
86 static char *gdb_completer_quote_characters
= "'";
88 /* Accessor for some completer data that may interest other files. */
91 get_gdb_completer_quote_characters (void)
93 return gdb_completer_quote_characters
;
96 /* Line completion interface function for readline. */
99 readline_line_completion_function (const char *text
, int matches
)
101 return line_completion_function (text
, matches
,
102 rl_line_buffer
, rl_point
);
105 /* This can be used for functions which don't want to complete on
106 symbols but don't want to complete on anything else either. */
108 noop_completer (struct cmd_list_element
*ignore
,
109 const char *text
, const char *prefix
)
114 /* Complete on filenames. */
116 filename_completer (struct cmd_list_element
*ignore
,
117 const char *text
, const char *word
)
120 VEC (char_ptr
) *return_val
= NULL
;
127 p
= rl_filename_completion_function (text
, subsequent_name
);
130 /* We need to set subsequent_name to a non-zero value before the
131 continue line below, because otherwise, if the first file
132 seen by GDB is a backup file whose name ends in a `~', we
133 will loop indefinitely. */
135 /* Like emacs, don't complete on old versions. Especially
136 useful in the "source" command. */
137 if (p
[strlen (p
) - 1] == '~')
144 /* Return exactly p. */
146 else if (word
> text
)
148 /* Return some portion of p. */
149 q
= xmalloc (strlen (p
) + 5);
150 strcpy (q
, p
+ (word
- text
));
155 /* Return some of TEXT plus p. */
156 q
= xmalloc (strlen (p
) + (text
- word
) + 5);
157 strncpy (q
, word
, text
- word
);
158 q
[text
- word
] = '\0';
162 VEC_safe_push (char_ptr
, return_val
, q
);
165 /* There is no way to do this just long enough to affect quote
166 inserting without also affecting the next completion. This
167 should be fixed in readline. FIXME. */
168 /* Ensure that readline does the right thing
169 with respect to inserting quotes. */
170 rl_completer_word_break_characters
= "";
175 /* Complete on locations, which might be of two possible forms:
181 This is intended to be used in commands that set breakpoints
185 location_completer (struct cmd_list_element
*ignore
,
186 const char *text
, const char *word
)
188 int n_syms
, n_files
, ix
;
189 VEC (char_ptr
) *fn_list
= NULL
;
190 VEC (char_ptr
) *list
= NULL
;
193 int quoted
= *text
== '\'' || *text
== '"';
194 int quote_char
= '\0';
195 const char *colon
= NULL
;
196 char *file_to_match
= NULL
;
197 const char *symbol_start
= text
;
198 const char *orig_text
= text
;
201 /* Do we have an unquoted colon, as in "break foo.c:bar"? */
202 for (p
= text
; *p
!= '\0'; ++p
)
204 if (*p
== '\\' && p
[1] == '\'')
206 else if (*p
== '\'' || *p
== '"')
210 while (*p
!= '\0' && *p
!= quote_found
)
212 if (*p
== '\\' && p
[1] == quote_found
)
217 if (*p
== quote_found
)
220 break; /* Hit the end of text. */
222 #if HAVE_DOS_BASED_FILE_SYSTEM
223 /* If we have a DOS-style absolute file name at the beginning of
224 TEXT, and the colon after the drive letter is the only colon
225 we found, pretend the colon is not there. */
226 else if (p
< text
+ 3 && *p
== ':' && p
== text
+ 1 + quoted
)
229 else if (*p
== ':' && !colon
)
232 symbol_start
= p
+ 1;
234 else if (strchr (current_language
->la_word_break_characters(), *p
))
235 symbol_start
= p
+ 1;
240 text_len
= strlen (text
);
242 /* Where is the file name? */
247 file_to_match
= (char *) xmalloc (colon
- text
+ 1);
248 strncpy (file_to_match
, text
, colon
- text
+ 1);
249 /* Remove trailing colons and quotes from the file name. */
250 for (s
= file_to_match
+ (colon
- text
);
253 if (*s
== ':' || *s
== quote_char
)
256 /* If the text includes a colon, they want completion only on a
257 symbol name after the colon. Otherwise, we need to complete on
258 symbols as well as on files. */
261 list
= make_file_symbol_completion_list (symbol_start
, word
,
263 xfree (file_to_match
);
267 list
= make_symbol_completion_list (symbol_start
, word
);
268 /* If text includes characters which cannot appear in a file
269 name, they cannot be asking for completion on files. */
271 gdb_completer_file_name_break_characters
) == text_len
)
272 fn_list
= make_source_files_completion_list (text
, text
);
275 n_syms
= VEC_length (char_ptr
, list
);
276 n_files
= VEC_length (char_ptr
, fn_list
);
278 /* Catenate fn_list[] onto the end of list[]. */
281 VEC_free (char_ptr
, list
); /* Paranoia. */
289 for (ix
= 0; VEC_iterate (char_ptr
, fn_list
, ix
, fn
); ++ix
)
290 VEC_safe_push (char_ptr
, list
, fn
);
291 VEC_free (char_ptr
, fn_list
);
294 if (n_syms
&& n_files
)
302 /* If we only have file names as possible completion, we should
303 bring them in sync with what rl_complete expects. The
304 problem is that if the user types "break /foo/b TAB", and the
305 possible completions are "/foo/bar" and "/foo/baz"
306 rl_complete expects us to return "bar" and "baz", without the
307 leading directories, as possible completions, because `word'
308 starts at the "b". But we ignore the value of `word' when we
309 call make_source_files_completion_list above (because that
310 would not DTRT when the completion results in both symbols
311 and file names), so make_source_files_completion_list returns
312 the full "/foo/bar" and "/foo/baz" strings. This produces
313 wrong results when, e.g., there's only one possible
314 completion, because rl_complete will prepend "/foo/" to each
315 candidate completion. The loop below removes that leading
317 for (ix
= 0; VEC_iterate (char_ptr
, list
, ix
, fn
); ++ix
)
319 memmove (fn
, fn
+ (word
- text
),
320 strlen (fn
) + 1 - (word
- text
));
325 /* No completions at all. As the final resort, try completing
326 on the entire text as a symbol. */
327 list
= make_symbol_completion_list (orig_text
, word
);
333 /* Helper for expression_completer which recursively adds field and
334 method names from TYPE, a struct or union type, to the array
337 add_struct_fields (struct type
*type
, VEC (char_ptr
) **output
,
338 char *fieldname
, int namelen
)
341 int computed_type_name
= 0;
342 const char *type_name
= NULL
;
344 CHECK_TYPEDEF (type
);
345 for (i
= 0; i
< TYPE_NFIELDS (type
); ++i
)
347 if (i
< TYPE_N_BASECLASSES (type
))
348 add_struct_fields (TYPE_BASECLASS (type
, i
),
349 output
, fieldname
, namelen
);
350 else if (TYPE_FIELD_NAME (type
, i
))
352 if (TYPE_FIELD_NAME (type
, i
)[0] != '\0')
354 if (! strncmp (TYPE_FIELD_NAME (type
, i
),
356 VEC_safe_push (char_ptr
, *output
,
357 xstrdup (TYPE_FIELD_NAME (type
, i
)));
359 else if (TYPE_CODE (TYPE_FIELD_TYPE (type
, i
)) == TYPE_CODE_UNION
)
361 /* Recurse into anonymous unions. */
362 add_struct_fields (TYPE_FIELD_TYPE (type
, i
),
363 output
, fieldname
, namelen
);
368 for (i
= TYPE_NFN_FIELDS (type
) - 1; i
>= 0; --i
)
370 const char *name
= TYPE_FN_FIELDLIST_NAME (type
, i
);
372 if (name
&& ! strncmp (name
, fieldname
, namelen
))
374 if (!computed_type_name
)
376 type_name
= type_name_no_tag (type
);
377 computed_type_name
= 1;
379 /* Omit constructors from the completion list. */
380 if (!type_name
|| strcmp (type_name
, name
))
381 VEC_safe_push (char_ptr
, *output
, xstrdup (name
));
386 /* Complete on expressions. Often this means completing on symbol
387 names, but some language parsers also have support for completing
390 expression_completer (struct cmd_list_element
*ignore
,
391 const char *text
, const char *word
)
393 struct type
*type
= NULL
;
396 volatile struct gdb_exception except
;
397 enum type_code code
= TYPE_CODE_UNDEF
;
399 /* Perform a tentative parse of the expression, to see whether a
400 field completion is required. */
402 TRY_CATCH (except
, RETURN_MASK_ERROR
)
404 type
= parse_expression_for_completion (text
, &fieldname
, &code
);
406 if (except
.reason
< 0)
408 if (fieldname
&& type
)
412 CHECK_TYPEDEF (type
);
413 if (TYPE_CODE (type
) != TYPE_CODE_PTR
414 && TYPE_CODE (type
) != TYPE_CODE_REF
)
416 type
= TYPE_TARGET_TYPE (type
);
419 if (TYPE_CODE (type
) == TYPE_CODE_UNION
420 || TYPE_CODE (type
) == TYPE_CODE_STRUCT
)
422 int flen
= strlen (fieldname
);
423 VEC (char_ptr
) *result
= NULL
;
425 add_struct_fields (type
, &result
, fieldname
, flen
);
430 else if (fieldname
&& code
!= TYPE_CODE_UNDEF
)
432 VEC (char_ptr
) *result
;
433 struct cleanup
*cleanup
= make_cleanup (xfree
, fieldname
);
435 result
= make_symbol_completion_type (fieldname
, fieldname
, code
);
436 do_cleanups (cleanup
);
441 /* Commands which complete on locations want to see the entire
444 p
> text
&& p
[-1] != ' ' && p
[-1] != '\t';
448 /* Not ideal but it is what we used to do before... */
449 return location_completer (ignore
, p
, word
);
452 /* See definition in completer.h. */
455 set_gdb_completion_word_break_characters (completer_ftype
*fn
)
457 /* So far we are only interested in differentiating filename
458 completers from everything else. */
459 if (fn
== filename_completer
)
460 rl_completer_word_break_characters
461 = gdb_completer_file_name_break_characters
;
463 rl_completer_word_break_characters
464 = gdb_completer_command_word_break_characters
;
467 /* Here are some useful test cases for completion. FIXME: These
468 should be put in the test suite. They should be tested with both
471 "show output-" "radix"
472 "show output" "-radix"
473 "p" ambiguous (commands starting with p--path, print, printf, etc.)
474 "p " ambiguous (all symbols)
475 "info t foo" no completions
476 "info t " no completions
477 "info t" ambiguous ("info target", "info terminal", etc.)
478 "info ajksdlfk" no completions
479 "info ajksdlfk " no completions
481 "info " ambiguous (all info commands)
482 "p \"a" no completions (string constant)
483 "p 'a" ambiguous (all symbols starting with a)
484 "p b-a" ambiguous (all symbols starting with a)
485 "p b-" ambiguous (all symbols)
486 "file Make" "file" (word break hard to screw up here)
487 "file ../gdb.stabs/we" "ird" (needs to not break word at slash)
496 complete_line_internal_reason
;
499 /* Internal function used to handle completions.
502 TEXT is the caller's idea of the "word" we are looking at.
504 LINE_BUFFER is available to be looked at; it contains the entire
505 text of the line. POINT is the offset in that line of the cursor.
506 You should pretend that the line ends at POINT.
508 REASON is of type complete_line_internal_reason.
510 If REASON is handle_brkchars:
511 Preliminary phase, called by gdb_completion_word_break_characters
512 function, is used to determine the correct set of chars that are
513 word delimiters depending on the current command in line_buffer.
514 No completion list should be generated; the return value should be
515 NULL. This is checked by an assertion in that function.
517 If REASON is handle_completions:
518 Main phase, called by complete_line function, is used to get the list
519 of posible completions.
521 If REASON is handle_help:
522 Special case when completing a 'help' command. In this case,
523 once sub-command completions are exhausted, we simply return NULL.
526 static VEC (char_ptr
) *
527 complete_line_internal (const char *text
,
528 const char *line_buffer
, int point
,
529 complete_line_internal_reason reason
)
531 VEC (char_ptr
) *list
= NULL
;
534 int ignore_help_classes
;
535 /* Pointer within tmp_command which corresponds to text. */
537 struct cmd_list_element
*c
, *result_list
;
539 /* Choose the default set of word break characters to break
540 completions. If we later find out that we are doing completions
541 on command strings (as opposed to strings supplied by the
542 individual command completer functions, which can be any string)
543 then we will switch to the special word break set for command
544 strings, which leaves out the '-' character used in some
546 rl_completer_word_break_characters
=
547 current_language
->la_word_break_characters();
549 /* Decide whether to complete on a list of gdb commands or on
551 tmp_command
= (char *) alloca (point
+ 1);
554 /* The help command should complete help aliases. */
555 ignore_help_classes
= reason
!= handle_help
;
557 strncpy (tmp_command
, line_buffer
, point
);
558 tmp_command
[point
] = '\0';
559 /* Since text always contains some number of characters leading up
560 to point, we can find the equivalent position in tmp_command
561 by subtracting that many characters from the end of tmp_command. */
562 word
= tmp_command
+ point
- strlen (text
);
566 /* An empty line we want to consider ambiguous; that is, it
567 could be any command. */
568 c
= CMD_LIST_AMBIGUOUS
;
573 c
= lookup_cmd_1 (&p
, cmdlist
, &result_list
, ignore_help_classes
);
576 /* Move p up to the next interesting thing. */
577 while (*p
== ' ' || *p
== '\t')
584 /* It is an unrecognized command. So there are no
585 possible completions. */
588 else if (c
== CMD_LIST_AMBIGUOUS
)
592 /* lookup_cmd_1 advances p up to the first ambiguous thing, but
593 doesn't advance over that thing itself. Do so now. */
595 while (*q
&& (isalnum (*q
) || *q
== '-' || *q
== '_'))
597 if (q
!= tmp_command
+ point
)
599 /* There is something beyond the ambiguous
600 command, so there are no possible completions. For
601 example, "info t " or "info t foo" does not complete
602 to anything, because "info t" can be "info target" or
608 /* We're trying to complete on the command which was ambiguous.
609 This we can deal with. */
612 if (reason
!= handle_brkchars
)
613 list
= complete_on_cmdlist (*result_list
->prefixlist
, p
,
614 word
, ignore_help_classes
);
618 if (reason
!= handle_brkchars
)
619 list
= complete_on_cmdlist (cmdlist
, p
, word
,
620 ignore_help_classes
);
622 /* Ensure that readline does the right thing with respect to
624 rl_completer_word_break_characters
=
625 gdb_completer_command_word_break_characters
;
630 /* We've recognized a full command. */
632 if (p
== tmp_command
+ point
)
634 /* There is no non-whitespace in the line beyond the
637 if (p
[-1] == ' ' || p
[-1] == '\t')
639 /* The command is followed by whitespace; we need to
640 complete on whatever comes after command. */
643 /* It is a prefix command; what comes after it is
644 a subcommand (e.g. "info "). */
645 if (reason
!= handle_brkchars
)
646 list
= complete_on_cmdlist (*c
->prefixlist
, p
, word
,
647 ignore_help_classes
);
649 /* Ensure that readline does the right thing
650 with respect to inserting quotes. */
651 rl_completer_word_break_characters
=
652 gdb_completer_command_word_break_characters
;
654 else if (reason
== handle_help
)
658 if (reason
!= handle_brkchars
)
659 list
= complete_on_enum (c
->enums
, p
, word
);
660 rl_completer_word_break_characters
=
661 gdb_completer_command_word_break_characters
;
665 /* It is a normal command; what comes after it is
666 completed by the command's completer function. */
667 if (c
->completer
== filename_completer
)
669 /* Many commands which want to complete on
670 file names accept several file names, as
671 in "run foo bar >>baz". So we don't want
672 to complete the entire text after the
673 command, just the last word. To this
674 end, we need to find the beginning of the
675 file name by starting at `word' and going
679 && strchr (gdb_completer_file_name_break_characters
, p
[-1]) == NULL
;
682 rl_completer_word_break_characters
=
683 gdb_completer_file_name_break_characters
;
685 else if (c
->completer
== location_completer
)
687 /* Commands which complete on locations want to
688 see the entire argument. */
691 && p
[-1] != ' ' && p
[-1] != '\t';
695 if (reason
== handle_brkchars
696 && c
->completer_handle_brkchars
!= NULL
)
697 (*c
->completer_handle_brkchars
) (c
, p
, word
);
698 if (reason
!= handle_brkchars
&& c
->completer
!= NULL
)
699 list
= (*c
->completer
) (c
, p
, word
);
704 /* The command is not followed by whitespace; we need to
705 complete on the command itself, e.g. "p" which is a
706 command itself but also can complete to "print", "ptype"
710 /* Find the command we are completing on. */
712 while (q
> tmp_command
)
714 if (isalnum (q
[-1]) || q
[-1] == '-' || q
[-1] == '_')
720 if (reason
!= handle_brkchars
)
721 list
= complete_on_cmdlist (result_list
, q
, word
,
722 ignore_help_classes
);
724 /* Ensure that readline does the right thing
725 with respect to inserting quotes. */
726 rl_completer_word_break_characters
=
727 gdb_completer_command_word_break_characters
;
730 else if (reason
== handle_help
)
734 /* There is non-whitespace beyond the command. */
736 if (c
->prefixlist
&& !c
->allow_unknown
)
738 /* It is an unrecognized subcommand of a prefix command,
739 e.g. "info adsfkdj". */
744 if (reason
!= handle_brkchars
)
745 list
= complete_on_enum (c
->enums
, p
, word
);
749 /* It is a normal command. */
750 if (c
->completer
== filename_completer
)
752 /* See the commentary above about the specifics
753 of file-name completion. */
756 && strchr (gdb_completer_file_name_break_characters
,
760 rl_completer_word_break_characters
=
761 gdb_completer_file_name_break_characters
;
763 else if (c
->completer
== location_completer
)
767 && p
[-1] != ' ' && p
[-1] != '\t';
771 if (reason
== handle_brkchars
772 && c
->completer_handle_brkchars
!= NULL
)
773 (*c
->completer_handle_brkchars
) (c
, p
, word
);
774 if (reason
!= handle_brkchars
&& c
->completer
!= NULL
)
775 list
= (*c
->completer
) (c
, p
, word
);
782 /* Generate completions all at once. Returns a vector of strings.
783 Each element is allocated with xmalloc. It can also return NULL if
784 there are no completions.
786 TEXT is the caller's idea of the "word" we are looking at.
788 LINE_BUFFER is available to be looked at; it contains the entire
791 POINT is the offset in that line of the cursor. You
792 should pretend that the line ends at POINT. */
795 complete_line (const char *text
, const char *line_buffer
, int point
)
797 return complete_line_internal (text
, line_buffer
,
798 point
, handle_completions
);
801 /* Complete on command names. Used by "help". */
803 command_completer (struct cmd_list_element
*ignore
,
804 const char *text
, const char *word
)
806 return complete_line_internal (word
, text
,
807 strlen (text
), handle_help
);
810 /* Complete on signals. */
813 signal_completer (struct cmd_list_element
*ignore
,
814 const char *text
, const char *word
)
816 VEC (char_ptr
) *return_val
= NULL
;
817 size_t len
= strlen (word
);
818 enum gdb_signal signum
;
821 for (signum
= GDB_SIGNAL_FIRST
; signum
!= GDB_SIGNAL_LAST
; ++signum
)
823 /* Can't handle this, so skip it. */
824 if (signum
== GDB_SIGNAL_0
)
827 signame
= gdb_signal_to_name (signum
);
829 /* Ignore the unknown signal case. */
830 if (!signame
|| strcmp (signame
, "?") == 0)
833 if (strncasecmp (signame
, word
, len
) == 0)
834 VEC_safe_push (char_ptr
, return_val
, xstrdup (signame
));
840 /* Get the list of chars that are considered as word breaks
841 for the current command. */
844 gdb_completion_word_break_characters (void)
846 VEC (char_ptr
) *list
;
848 list
= complete_line_internal (rl_line_buffer
, rl_line_buffer
, rl_point
,
850 gdb_assert (list
== NULL
);
851 return rl_completer_word_break_characters
;
854 /* Generate completions one by one for the completer. Each time we
855 are called return another potential completion to the caller.
856 line_completion just completes on commands or passes the buck to
857 the command's completer function, the stuff specific to symbol
858 completion is in make_symbol_completion_list.
860 TEXT is the caller's idea of the "word" we are looking at.
862 MATCHES is the number of matches that have currently been collected
863 from calling this completion function. When zero, then we need to
864 initialize, otherwise the initialization has already taken place
865 and we can just return the next potential completion string.
867 LINE_BUFFER is available to be looked at; it contains the entire
868 text of the line. POINT is the offset in that line of the cursor.
869 You should pretend that the line ends at POINT.
871 Returns NULL if there are no more completions, else a pointer to a
872 string which is a possible completion, it is the caller's
873 responsibility to free the string. */
876 line_completion_function (const char *text
, int matches
,
877 char *line_buffer
, int point
)
879 static VEC (char_ptr
) *list
= NULL
; /* Cache of completions. */
880 static int index
; /* Next cached completion. */
885 /* The caller is beginning to accumulate a new set of
886 completions, so we need to find all of them now, and cache
887 them for returning one at a time on future calls. */
891 /* Free the storage used by LIST, but not by the strings
892 inside. This is because rl_complete_internal () frees
893 the strings. As complete_line may abort by calling
894 `error' clear LIST now. */
895 VEC_free (char_ptr
, list
);
898 list
= complete_line (text
, line_buffer
, point
);
901 /* If we found a list of potential completions during initialization
902 then dole them out one at a time. After returning the last one,
903 return NULL (and continue to do so) each time we are called after
904 that, until a new list is available. */
908 if (index
< VEC_length (char_ptr
, list
))
910 output
= VEC_index (char_ptr
, list
, index
);
916 /* Can't do this because readline hasn't yet checked the word breaks
917 for figuring out whether to insert a quote. */
919 /* Make sure the word break characters are set back to normal for
920 the next time that readline tries to complete something. */
921 rl_completer_word_break_characters
=
922 current_language
->la_word_break_characters();
928 /* Skip over the possibly quoted word STR (as defined by the quote
929 characters QUOTECHARS and the word break characters BREAKCHARS).
930 Returns pointer to the location after the "word". If either
931 QUOTECHARS or BREAKCHARS is NULL, use the same values used by the
935 skip_quoted_chars (const char *str
, const char *quotechars
,
936 const char *breakchars
)
938 char quote_char
= '\0';
941 if (quotechars
== NULL
)
942 quotechars
= gdb_completer_quote_characters
;
944 if (breakchars
== NULL
)
945 breakchars
= current_language
->la_word_break_characters();
947 for (scan
= str
; *scan
!= '\0'; scan
++)
949 if (quote_char
!= '\0')
951 /* Ignore everything until the matching close quote char. */
952 if (*scan
== quote_char
)
954 /* Found matching close quote. */
959 else if (strchr (quotechars
, *scan
))
961 /* Found start of a quoted string. */
964 else if (strchr (breakchars
, *scan
))
973 /* Skip over the possibly quoted word STR (as defined by the quote
974 characters and word break characters used by the completer).
975 Returns pointer to the location after the "word". */
978 skip_quoted (const char *str
)
980 return skip_quoted_chars (str
, NULL
, NULL
);