1 /* Lisp parsing and input streams.
2 Copyright (C) 1985, 86, 87, 88, 89, 93, 94, 95, 97, 98, 99, 2000, 2001
3 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
25 #include <sys/types.h>
30 #include "intervals.h"
36 #include "termhooks.h"
39 #include <sys/inode.h>
44 #include <unistd.h> /* to get X_OK */
61 #endif /* HAVE_SETLOCALE */
68 #define file_offset off_t
69 #define file_tell ftello
71 #define file_offset long
72 #define file_tell ftell
79 Lisp_Object Qread_char
, Qget_file_char
, Qstandard_input
, Qcurrent_load_list
;
80 Lisp_Object Qvariable_documentation
, Vvalues
, Vstandard_input
, Vafter_load_alist
;
81 Lisp_Object Qascii_character
, Qload
, Qload_file_name
;
82 Lisp_Object Qbackquote
, Qcomma
, Qcomma_at
, Qcomma_dot
, Qfunction
;
83 Lisp_Object Qinhibit_file_name_operation
;
85 extern Lisp_Object Qevent_symbol_element_mask
;
86 extern Lisp_Object Qfile_exists_p
;
88 /* non-zero if inside `load' */
91 /* Directory in which the sources were found. */
92 Lisp_Object Vsource_directory
;
94 /* Search path and suffixes for files to be loaded. */
95 Lisp_Object Vload_path
, Vload_suffixes
, default_suffixes
;
97 /* File name of user's init file. */
98 Lisp_Object Vuser_init_file
;
100 /* This is the user-visible association list that maps features to
101 lists of defs in their load files. */
102 Lisp_Object Vload_history
;
104 /* This is used to build the load history. */
105 Lisp_Object Vcurrent_load_list
;
107 /* List of files that were preloaded. */
108 Lisp_Object Vpreloaded_file_list
;
110 /* Name of file actually being read by `load'. */
111 Lisp_Object Vload_file_name
;
113 /* Function to use for reading, in `load' and friends. */
114 Lisp_Object Vload_read_function
;
116 /* The association list of objects read with the #n=object form.
117 Each member of the list has the form (n . object), and is used to
118 look up the object for the corresponding #n# construct.
119 It must be set to nil before all top-level calls to read0. */
120 Lisp_Object read_objects
;
122 /* Nonzero means load should forcibly load all dynamic doc strings. */
123 static int load_force_doc_strings
;
125 /* Nonzero means read should convert strings to unibyte. */
126 static int load_convert_to_unibyte
;
128 /* Function to use for loading an Emacs lisp source file (not
129 compiled) instead of readevalloop. */
130 Lisp_Object Vload_source_file_function
;
132 /* List of all DEFVAR_BOOL variables. Used by the byte optimizer. */
133 Lisp_Object Vbyte_boolean_vars
;
135 /* List of descriptors now open for Fload. */
136 static Lisp_Object load_descriptor_list
;
138 /* File for get_file_char to read from. Use by load. */
139 static FILE *instream
;
141 /* When nonzero, read conses in pure space */
142 static int read_pure
;
144 /* For use within read-from-string (this reader is non-reentrant!!) */
145 static int read_from_string_index
;
146 static int read_from_string_index_byte
;
147 static int read_from_string_limit
;
149 /* Number of bytes left to read in the buffer character
150 that `readchar' has already advanced over. */
151 static int readchar_backlog
;
153 /* This contains the last string skipped with #@. */
154 static char *saved_doc_string
;
155 /* Length of buffer allocated in saved_doc_string. */
156 static int saved_doc_string_size
;
157 /* Length of actual data in saved_doc_string. */
158 static int saved_doc_string_length
;
159 /* This is the file position that string came from. */
160 static file_offset saved_doc_string_position
;
162 /* This contains the previous string skipped with #@.
163 We copy it from saved_doc_string when a new string
164 is put in saved_doc_string. */
165 static char *prev_saved_doc_string
;
166 /* Length of buffer allocated in prev_saved_doc_string. */
167 static int prev_saved_doc_string_size
;
168 /* Length of actual data in prev_saved_doc_string. */
169 static int prev_saved_doc_string_length
;
170 /* This is the file position that string came from. */
171 static file_offset prev_saved_doc_string_position
;
173 /* Nonzero means inside a new-style backquote
174 with no surrounding parentheses.
175 Fread initializes this to zero, so we need not specbind it
176 or worry about what happens to it when there is an error. */
177 static int new_backquote_flag
;
179 /* A list of file names for files being loaded in Fload. Used to
180 check for recursive loads. */
182 static Lisp_Object Vloads_in_progress
;
184 /* Limit of the depth of recursive loads. */
186 Lisp_Object Vrecursive_load_depth_limit
;
188 /* Non-zero means load dangerous compiled Lisp files. */
190 int load_dangerous_libraries
;
192 /* A regular expression used to detect files compiled with Emacs. */
194 static Lisp_Object Vbytecomp_version_regexp
;
196 static void readevalloop
P_ ((Lisp_Object
, FILE*, Lisp_Object
,
197 Lisp_Object (*) (), int,
198 Lisp_Object
, Lisp_Object
));
199 static Lisp_Object load_unwind
P_ ((Lisp_Object
));
200 static Lisp_Object load_descriptor_unwind
P_ ((Lisp_Object
));
203 /* Handle unreading and rereading of characters.
204 Write READCHAR to read a character,
205 UNREAD(c) to unread c to be read again.
207 These macros actually read/unread a byte code, multibyte characters
208 are not handled here. The caller should manage them if necessary.
211 #define READCHAR readchar (readcharfun)
212 #define UNREAD(c) unreadchar (readcharfun, c)
215 readchar (readcharfun
)
216 Lisp_Object readcharfun
;
221 if (BUFFERP (readcharfun
))
223 register struct buffer
*inbuffer
= XBUFFER (readcharfun
);
225 int pt_byte
= BUF_PT_BYTE (inbuffer
);
226 int orig_pt_byte
= pt_byte
;
228 if (readchar_backlog
> 0)
229 /* We get the address of the byte just passed,
230 which is the last byte of the character.
231 The other bytes in this character are consecutive with it,
232 because the gap can't be in the middle of a character. */
233 return *(BUF_BYTE_ADDRESS (inbuffer
, BUF_PT_BYTE (inbuffer
) - 1)
234 - --readchar_backlog
);
236 if (pt_byte
>= BUF_ZV_BYTE (inbuffer
))
239 readchar_backlog
= -1;
241 if (! NILP (inbuffer
->enable_multibyte_characters
))
243 /* Fetch the character code from the buffer. */
244 unsigned char *p
= BUF_BYTE_ADDRESS (inbuffer
, pt_byte
);
245 BUF_INC_POS (inbuffer
, pt_byte
);
246 c
= STRING_CHAR (p
, pt_byte
- orig_pt_byte
);
250 c
= BUF_FETCH_BYTE (inbuffer
, pt_byte
);
253 SET_BUF_PT_BOTH (inbuffer
, BUF_PT (inbuffer
) + 1, pt_byte
);
257 if (MARKERP (readcharfun
))
259 register struct buffer
*inbuffer
= XMARKER (readcharfun
)->buffer
;
261 int bytepos
= marker_byte_position (readcharfun
);
262 int orig_bytepos
= bytepos
;
264 if (readchar_backlog
> 0)
265 /* We get the address of the byte just passed,
266 which is the last byte of the character.
267 The other bytes in this character are consecutive with it,
268 because the gap can't be in the middle of a character. */
269 return *(BUF_BYTE_ADDRESS (inbuffer
, XMARKER (readcharfun
)->bytepos
- 1)
270 - --readchar_backlog
);
272 if (bytepos
>= BUF_ZV_BYTE (inbuffer
))
275 readchar_backlog
= -1;
277 if (! NILP (inbuffer
->enable_multibyte_characters
))
279 /* Fetch the character code from the buffer. */
280 unsigned char *p
= BUF_BYTE_ADDRESS (inbuffer
, bytepos
);
281 BUF_INC_POS (inbuffer
, bytepos
);
282 c
= STRING_CHAR (p
, bytepos
- orig_bytepos
);
286 c
= BUF_FETCH_BYTE (inbuffer
, bytepos
);
290 XMARKER (readcharfun
)->bytepos
= bytepos
;
291 XMARKER (readcharfun
)->charpos
++;
296 if (EQ (readcharfun
, Qlambda
))
297 return read_bytecode_char (0);
299 if (EQ (readcharfun
, Qget_file_char
))
303 /* Interrupted reads have been observed while reading over the network */
304 while (c
== EOF
&& ferror (instream
) && errno
== EINTR
)
313 if (STRINGP (readcharfun
))
315 if (read_from_string_index
>= read_from_string_limit
)
318 FETCH_STRING_CHAR_ADVANCE (c
, readcharfun
,
319 read_from_string_index
,
320 read_from_string_index_byte
);
325 tem
= call0 (readcharfun
);
332 /* Unread the character C in the way appropriate for the stream READCHARFUN.
333 If the stream is a user function, call it with the char as argument. */
336 unreadchar (readcharfun
, c
)
337 Lisp_Object readcharfun
;
341 /* Don't back up the pointer if we're unreading the end-of-input mark,
342 since readchar didn't advance it when we read it. */
344 else if (BUFFERP (readcharfun
))
346 struct buffer
*b
= XBUFFER (readcharfun
);
347 int bytepos
= BUF_PT_BYTE (b
);
349 if (readchar_backlog
>= 0)
354 if (! NILP (b
->enable_multibyte_characters
))
355 BUF_DEC_POS (b
, bytepos
);
359 BUF_PT_BYTE (b
) = bytepos
;
362 else if (MARKERP (readcharfun
))
364 struct buffer
*b
= XMARKER (readcharfun
)->buffer
;
365 int bytepos
= XMARKER (readcharfun
)->bytepos
;
367 if (readchar_backlog
>= 0)
371 XMARKER (readcharfun
)->charpos
--;
372 if (! NILP (b
->enable_multibyte_characters
))
373 BUF_DEC_POS (b
, bytepos
);
377 XMARKER (readcharfun
)->bytepos
= bytepos
;
380 else if (STRINGP (readcharfun
))
382 read_from_string_index
--;
383 read_from_string_index_byte
384 = string_char_to_byte (readcharfun
, read_from_string_index
);
386 else if (EQ (readcharfun
, Qlambda
))
387 read_bytecode_char (1);
388 else if (EQ (readcharfun
, Qget_file_char
))
389 ungetc (c
, instream
);
391 call1 (readcharfun
, make_number (c
));
394 static Lisp_Object
read0 (), read1 (), read_list (), read_vector ();
395 static int read_multibyte ();
396 static Lisp_Object
substitute_object_recurse ();
397 static void substitute_object_in_subtree (), substitute_in_interval ();
400 /* Get a character from the tty. */
402 extern Lisp_Object
read_char ();
404 /* Read input events until we get one that's acceptable for our purposes.
406 If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed
407 until we get a character we like, and then stuffed into
410 If ASCII_REQUIRED is non-zero, we check function key events to see
411 if the unmodified version of the symbol has a Qascii_character
412 property, and use that character, if present.
414 If ERROR_NONASCII is non-zero, we signal an error if the input we
415 get isn't an ASCII character with modifiers. If it's zero but
416 ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII
419 If INPUT_METHOD is nonzero, we invoke the current input method
420 if the character warrants that. */
423 read_filtered_event (no_switch_frame
, ascii_required
, error_nonascii
,
425 int no_switch_frame
, ascii_required
, error_nonascii
, input_method
;
427 register Lisp_Object val
, delayed_switch_frame
;
429 #ifdef HAVE_WINDOW_SYSTEM
430 if (display_hourglass_p
)
434 delayed_switch_frame
= Qnil
;
436 /* Read until we get an acceptable event. */
438 val
= read_char (0, 0, 0,
439 (input_method
? Qnil
: Qt
),
445 /* switch-frame events are put off until after the next ASCII
446 character. This is better than signaling an error just because
447 the last characters were typed to a separate minibuffer frame,
448 for example. Eventually, some code which can deal with
449 switch-frame events will read it and process it. */
451 && EVENT_HAS_PARAMETERS (val
)
452 && EQ (EVENT_HEAD (val
), Qswitch_frame
))
454 delayed_switch_frame
= val
;
460 /* Convert certain symbols to their ASCII equivalents. */
463 Lisp_Object tem
, tem1
;
464 tem
= Fget (val
, Qevent_symbol_element_mask
);
467 tem1
= Fget (Fcar (tem
), Qascii_character
);
468 /* Merge this symbol's modifier bits
469 with the ASCII equivalent of its basic code. */
471 XSETFASTINT (val
, XINT (tem1
) | XINT (Fcar (Fcdr (tem
))));
475 /* If we don't have a character now, deal with it appropriately. */
480 Vunread_command_events
= Fcons (val
, Qnil
);
481 error ("Non-character input-event");
488 if (! NILP (delayed_switch_frame
))
489 unread_switch_frame
= delayed_switch_frame
;
491 #ifdef HAVE_WINDOW_SYSTEM
492 if (display_hourglass_p
)
498 DEFUN ("read-char", Fread_char
, Sread_char
, 0, 2, 0,
499 "Read a character from the command input (keyboard or macro).\n\
500 It is returned as a number.\n\
501 If the user generates an event which is not a character (i.e. a mouse\n\
502 click or function key event), `read-char' signals an error. As an\n\
503 exception, switch-frame events are put off until non-ASCII events can\n\
505 If you want to read non-character events, or ignore them, call\n\
506 `read-event' or `read-char-exclusive' instead.\n\
508 If the optional argument PROMPT is non-nil, display that as a prompt.\n\
509 If the optional argument INHERIT-INPUT-METHOD is non-nil and some\n\
510 input method is turned on in the current buffer, that input method\n\
511 is used for reading a character.")
512 (prompt
, inherit_input_method
)
513 Lisp_Object prompt
, inherit_input_method
;
516 message_with_string ("%s", prompt
, 0);
517 return read_filtered_event (1, 1, 1, ! NILP (inherit_input_method
));
520 DEFUN ("read-event", Fread_event
, Sread_event
, 0, 2, 0,
521 "Read an event object from the input stream.\n\
522 If the optional argument PROMPT is non-nil, display that as a prompt.\n\
523 If the optional argument INHERIT-INPUT-METHOD is non-nil and some\n\
524 input method is turned on in the current buffer, that input method\n\
525 is used for reading a character.")
526 (prompt
, inherit_input_method
)
527 Lisp_Object prompt
, inherit_input_method
;
530 message_with_string ("%s", prompt
, 0);
531 return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method
));
534 DEFUN ("read-char-exclusive", Fread_char_exclusive
, Sread_char_exclusive
, 0, 2, 0,
535 "Read a character from the command input (keyboard or macro).\n\
536 It is returned as a number. Non-character events are ignored.\n\
538 If the optional argument PROMPT is non-nil, display that as a prompt.\n\
539 If the optional argument INHERIT-INPUT-METHOD is non-nil and some\n\
540 input method is turned on in the current buffer, that input method\n\
541 is used for reading a character.")
542 (prompt
, inherit_input_method
)
543 Lisp_Object prompt
, inherit_input_method
;
546 message_with_string ("%s", prompt
, 0);
547 return read_filtered_event (1, 1, 0, ! NILP (inherit_input_method
));
550 DEFUN ("get-file-char", Fget_file_char
, Sget_file_char
, 0, 0, 0,
551 "Don't use this yourself.")
554 register Lisp_Object val
;
555 XSETINT (val
, getc (instream
));
561 /* Value is non-zero if the file asswociated with file descriptor FD
562 is a compiled Lisp file that's safe to load. Only files compiled
563 with Emacs are safe to load. Files compiled with XEmacs can lead
564 to a crash in Fbyte_code because of an incompatible change in the
575 /* Read the first few bytes from the file, and look for a line
576 specifying the byte compiler version used. */
577 nbytes
= emacs_read (fd
, buf
, sizeof buf
- 1);
582 /* Skip to the next newline, skipping over the initial `ELC'
583 with NUL bytes following it. */
584 for (i
= 0; i
< nbytes
&& buf
[i
] != '\n'; ++i
)
588 && fast_c_string_match_ignore_case (Vbytecomp_version_regexp
,
593 lseek (fd
, 0, SEEK_SET
);
598 /* Callback for record_unwind_protect. Restore the old load list OLD,
599 after loading a file successfully. */
602 record_load_unwind (old
)
605 return Vloads_in_progress
= old
;
609 DEFUN ("load", Fload
, Sload
, 1, 5, 0,
610 "Execute a file of Lisp code named FILE.\n\
611 First try FILE with `.elc' appended, then try with `.el',\n\
612 then try FILE unmodified. Environment variable references in FILE\n\
613 are replaced with their values by calling `substitute-in-file-name'.\n\
614 This function searches the directories in `load-path'.\n\
615 If optional second arg NOERROR is non-nil,\n\
616 report no error if FILE doesn't exist.\n\
617 Print messages at start and end of loading unless\n\
618 optional third arg NOMESSAGE is non-nil.\n\
619 If optional fourth arg NOSUFFIX is non-nil, don't try adding\n\
620 suffixes `.elc' or `.el' to the specified name FILE.\n\
621 If optional fifth arg MUST-SUFFIX is non-nil, insist on\n\
622 the suffix `.elc' or `.el'; don't accept just FILE unless\n\
623 it ends in one of those suffixes or includes a directory name.\n\
624 Return t if file exists.")
625 (file
, noerror
, nomessage
, nosuffix
, must_suffix
)
626 Lisp_Object file
, noerror
, nomessage
, nosuffix
, must_suffix
;
628 register FILE *stream
;
629 register int fd
= -1;
630 register Lisp_Object lispstream
;
631 int count
= specpdl_ptr
- specpdl
;
635 /* 1 means we printed the ".el is newer" message. */
637 /* 1 means we are loading a compiled file. */
646 CHECK_STRING (file
, 0);
648 /* If file name is magic, call the handler. */
649 /* This shouldn't be necessary any more now that `openp' handles it right.
650 handler = Ffind_file_name_handler (file, Qload);
652 return call5 (handler, Qload, file, noerror, nomessage, nosuffix); */
654 /* Do this after the handler to avoid
655 the need to gcpro noerror, nomessage and nosuffix.
656 (Below here, we care only whether they are nil or not.)
657 The presence of this call is the result of a historical accident:
658 it used to be in every file-operations and when it got removed
659 everywhere, it accidentally stayed here. Since then, enough people
660 supposedly have things like (load "$PROJECT/foo.el") in their .emacs
661 that it seemed risky to remove. */
662 file
= Fsubstitute_in_file_name (file
);
664 /* Avoid weird lossage with null string as arg,
665 since it would try to load a directory as a Lisp file */
666 if (XSTRING (file
)->size
> 0)
668 int size
= STRING_BYTES (XSTRING (file
));
673 if (! NILP (must_suffix
))
675 /* Don't insist on adding a suffix if FILE already ends with one. */
677 && !strcmp (XSTRING (file
)->data
+ size
- 3, ".el"))
680 && !strcmp (XSTRING (file
)->data
+ size
- 4, ".elc"))
682 /* Don't insist on adding a suffix
683 if the argument includes a directory name. */
684 else if (! NILP (Ffile_name_directory (file
)))
688 fd
= openp (Vload_path
, file
,
689 (!NILP (nosuffix
) ? Qnil
690 : !NILP (must_suffix
) ? Vload_suffixes
691 : Fappend (2, (tmp
[0] = Vload_suffixes
,
692 tmp
[1] = default_suffixes
,
702 Fsignal (Qfile_error
, Fcons (build_string ("Cannot open load file"),
703 Fcons (file
, Qnil
)));
708 /* Tell startup.el whether or not we found the user's init file. */
709 if (EQ (Qt
, Vuser_init_file
))
710 Vuser_init_file
= found
;
712 /* If FD is -2, that means openp found a magic file. */
715 if (NILP (Fequal (found
, file
)))
716 /* If FOUND is a different file name from FILE,
717 find its handler even if we have already inhibited
718 the `load' operation on FILE. */
719 handler
= Ffind_file_name_handler (found
, Qt
);
721 handler
= Ffind_file_name_handler (found
, Qload
);
722 if (! NILP (handler
))
723 return call5 (handler
, Qload
, found
, noerror
, nomessage
, Qt
);
726 /* Check if we're stuck in a recursive load cycle.
728 2000-09-21: It's not possible to just check for the file loaded
729 being a member of Vloads_in_progress. This fails because of the
730 way the byte compiler currently works; `provide's are not
731 evaluted, see font-lock.el/jit-lock.el as an example. This
732 leads to a certain amount of ``normal'' recursion.
734 Also, just loading a file recursively is not always an error in
735 the general case; the second load may do something different. */
736 if (INTEGERP (Vrecursive_load_depth_limit
)
737 && XINT (Vrecursive_load_depth_limit
) > 0)
739 Lisp_Object len
= Flength (Vloads_in_progress
);
740 if (XFASTINT (len
) > XFASTINT (Vrecursive_load_depth_limit
))
741 Fsignal (Qerror
, Fcons (build_string ("Recursive load suspected"),
742 Fcons (found
, Vloads_in_progress
)));
743 record_unwind_protect (record_load_unwind
, Vloads_in_progress
);
744 Vloads_in_progress
= Fcons (found
, Vloads_in_progress
);
747 if (!bcmp (&(XSTRING (found
)->data
[STRING_BYTES (XSTRING (found
)) - 4]),
749 /* Load .elc files directly, but not when they are
750 remote and have no handler! */
757 if (!safe_to_load_p (fd
))
760 if (!load_dangerous_libraries
)
761 error ("File `%s' was not compiled in Emacs",
762 XSTRING (found
)->data
);
763 else if (!NILP (nomessage
))
764 message_with_string ("File `%s' not compiled in Emacs", found
, 1);
772 stat ((char *)XSTRING (found
)->data
, &s1
);
773 XSTRING (found
)->data
[STRING_BYTES (XSTRING (found
)) - 1] = 0;
774 result
= stat ((char *)XSTRING (found
)->data
, &s2
);
775 if (result
>= 0 && (unsigned) s1
.st_mtime
< (unsigned) s2
.st_mtime
)
777 /* Make the progress messages mention that source is newer. */
780 /* If we won't print another message, mention this anyway. */
781 if (! NILP (nomessage
))
782 message_with_string ("Source file `%s' newer than byte-compiled file",
785 XSTRING (found
)->data
[STRING_BYTES (XSTRING (found
)) - 1] = 'c';
790 /* We are loading a source file (*.el). */
791 if (!NILP (Vload_source_file_function
))
797 val
= call4 (Vload_source_file_function
, found
, file
,
798 NILP (noerror
) ? Qnil
: Qt
,
799 NILP (nomessage
) ? Qnil
: Qt
);
800 return unbind_to (count
, val
);
806 stream
= fopen ((char *) XSTRING (found
)->data
, fmode
);
807 #else /* not WINDOWSNT */
808 stream
= fdopen (fd
, fmode
);
809 #endif /* not WINDOWSNT */
813 error ("Failure to create stdio stream for %s", XSTRING (file
)->data
);
816 if (! NILP (Vpurify_flag
))
817 Vpreloaded_file_list
= Fcons (file
, Vpreloaded_file_list
);
819 if (NILP (nomessage
))
822 message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...",
825 message_with_string ("Loading %s (source)...", file
, 1);
827 message_with_string ("Loading %s (compiled; note, source file is newer)...",
829 else /* The typical case; compiled file newer than source file. */
830 message_with_string ("Loading %s...", file
, 1);
834 lispstream
= Fcons (Qnil
, Qnil
);
835 XSETFASTINT (XCAR (lispstream
), (EMACS_UINT
)stream
>> 16);
836 XSETFASTINT (XCDR (lispstream
), (EMACS_UINT
)stream
& 0xffff);
837 record_unwind_protect (load_unwind
, lispstream
);
838 record_unwind_protect (load_descriptor_unwind
, load_descriptor_list
);
839 specbind (Qload_file_name
, found
);
840 specbind (Qinhibit_file_name_operation
, Qnil
);
842 = Fcons (make_number (fileno (stream
)), load_descriptor_list
);
844 readevalloop (Qget_file_char
, stream
, file
, Feval
, 0, Qnil
, Qnil
);
845 unbind_to (count
, Qnil
);
847 /* Run any load-hooks for this file. */
848 temp
= Fassoc (file
, Vafter_load_alist
);
850 Fprogn (Fcdr (temp
));
853 if (saved_doc_string
)
854 free (saved_doc_string
);
855 saved_doc_string
= 0;
856 saved_doc_string_size
= 0;
858 if (prev_saved_doc_string
)
859 xfree (prev_saved_doc_string
);
860 prev_saved_doc_string
= 0;
861 prev_saved_doc_string_size
= 0;
863 if (!noninteractive
&& NILP (nomessage
))
866 message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...done",
869 message_with_string ("Loading %s (source)...done", file
, 1);
871 message_with_string ("Loading %s (compiled; note, source file is newer)...done",
873 else /* The typical case; compiled file newer than source file. */
874 message_with_string ("Loading %s...done", file
, 1);
881 load_unwind (stream
) /* used as unwind-protect function in load */
884 fclose ((FILE *) (XFASTINT (XCAR (stream
)) << 16
885 | XFASTINT (XCDR (stream
))));
886 if (--load_in_progress
< 0) load_in_progress
= 0;
891 load_descriptor_unwind (oldlist
)
894 load_descriptor_list
= oldlist
;
898 /* Close all descriptors in use for Floads.
899 This is used when starting a subprocess. */
906 for (tail
= load_descriptor_list
; !NILP (tail
); tail
= XCDR (tail
))
907 emacs_close (XFASTINT (XCAR (tail
)));
912 complete_filename_p (pathname
)
913 Lisp_Object pathname
;
915 register unsigned char *s
= XSTRING (pathname
)->data
;
916 return (IS_DIRECTORY_SEP (s
[0])
917 || (XSTRING (pathname
)->size
> 2
918 && IS_DEVICE_SEP (s
[1]) && IS_DIRECTORY_SEP (s
[2]))
928 /* Search for a file whose name is STR, looking in directories
929 in the Lisp list PATH, and trying suffixes from SUFFIX.
930 On success, returns a file descriptor. On failure, returns -1.
932 SUFFIXES is a list of strings containing possible suffixes.
933 The empty suffix is automatically added iff the list is empty.
935 EXEC_ONLY nonzero means don't open the files,
936 just look for one that is executable. In this case,
937 returns 1 on success.
939 If STOREPTR is nonzero, it points to a slot where the name of
940 the file actually found should be stored as a Lisp string.
941 nil is stored there on failure.
943 If the file we find is remote, return -2
944 but store the found remote file name in *STOREPTR.
945 We do not check for remote files if EXEC_ONLY is nonzero. */
948 openp (path
, str
, suffixes
, storeptr
, exec_only
)
949 Lisp_Object path
, str
;
950 Lisp_Object suffixes
;
951 Lisp_Object
*storeptr
;
957 register char *fn
= buf
;
960 Lisp_Object filename
;
962 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
, gcpro5
;
963 Lisp_Object string
, tail
;
964 int max_suffix_len
= 0;
966 for (tail
= suffixes
; CONSP (tail
); tail
= XCDR (tail
))
968 CHECK_STRING (XCAR (tail
), 0);
969 max_suffix_len
= max (max_suffix_len
,
970 STRING_BYTES (XSTRING (XCAR (tail
))));
973 string
= filename
= Qnil
;
974 GCPRO5 (str
, string
, filename
, path
, suffixes
);
979 if (complete_filename_p (str
))
982 for (; CONSP (path
); path
= XCDR (path
))
984 filename
= Fexpand_file_name (str
, XCAR (path
));
985 if (!complete_filename_p (filename
))
986 /* If there are non-absolute elts in PATH (eg ".") */
987 /* Of course, this could conceivably lose if luser sets
988 default-directory to be something non-absolute... */
990 filename
= Fexpand_file_name (filename
, current_buffer
->directory
);
991 if (!complete_filename_p (filename
))
992 /* Give up on this path element! */
996 /* Calculate maximum size of any filename made from
997 this path element/specified file name and any possible suffix. */
998 want_size
= max_suffix_len
+ STRING_BYTES (XSTRING (filename
)) + 1;
999 if (fn_size
< want_size
)
1000 fn
= (char *) alloca (fn_size
= 100 + want_size
);
1002 /* Loop over suffixes. */
1003 for (tail
= NILP (suffixes
) ? default_suffixes
: suffixes
;
1004 CONSP (tail
); tail
= XCDR (tail
))
1006 int lsuffix
= STRING_BYTES (XSTRING (XCAR (tail
)));
1007 Lisp_Object handler
;
1009 /* Concatenate path element/specified name with the suffix.
1010 If the directory starts with /:, remove that. */
1011 if (XSTRING (filename
)->size
> 2
1012 && XSTRING (filename
)->data
[0] == '/'
1013 && XSTRING (filename
)->data
[1] == ':')
1015 strncpy (fn
, XSTRING (filename
)->data
+ 2,
1016 STRING_BYTES (XSTRING (filename
)) - 2);
1017 fn
[STRING_BYTES (XSTRING (filename
)) - 2] = 0;
1021 strncpy (fn
, XSTRING (filename
)->data
,
1022 STRING_BYTES (XSTRING (filename
)));
1023 fn
[STRING_BYTES (XSTRING (filename
))] = 0;
1026 if (lsuffix
!= 0) /* Bug happens on CCI if lsuffix is 0. */
1027 strncat (fn
, XSTRING (XCAR (tail
))->data
, lsuffix
);
1029 /* Check that the file exists and is not a directory. */
1030 /* We used to only check for handlers on non-absolute file names:
1034 handler = Ffind_file_name_handler (filename, Qfile_exists_p);
1035 It's not clear why that was the case and it breaks things like
1036 (load "/bar.el") where the file is actually "/bar.el.gz". */
1037 handler
= Ffind_file_name_handler (filename
, Qfile_exists_p
);
1038 if (!NILP (handler
) && !exec_only
)
1042 string
= build_string (fn
);
1043 exists
= !NILP (Ffile_readable_p (string
));
1044 if (exists
&& !NILP (Ffile_directory_p (build_string (fn
))))
1049 /* We succeeded; return this descriptor and filename. */
1051 *storeptr
= build_string (fn
);
1058 int exists
= (stat (fn
, &st
) >= 0
1059 && (st
.st_mode
& S_IFMT
) != S_IFDIR
);
1062 /* Check that we can access or open it. */
1064 fd
= (access (fn
, X_OK
) == 0) ? 1 : -1;
1066 fd
= emacs_open (fn
, O_RDONLY
, 0);
1070 /* We succeeded; return this descriptor and filename. */
1072 *storeptr
= build_string (fn
);
1088 /* Merge the list we've accumulated of globals from the current input source
1089 into the load_history variable. The details depend on whether
1090 the source has an associated file name or not. */
1093 build_load_history (stream
, source
)
1097 register Lisp_Object tail
, prev
, newelt
;
1098 register Lisp_Object tem
, tem2
;
1099 register int foundit
, loading
;
1101 loading
= stream
|| !NARROWED
;
1103 tail
= Vload_history
;
1106 while (!NILP (tail
))
1110 /* Find the feature's previous assoc list... */
1111 if (!NILP (Fequal (source
, Fcar (tem
))))
1115 /* If we're loading, remove it. */
1119 Vload_history
= Fcdr (tail
);
1121 Fsetcdr (prev
, Fcdr (tail
));
1124 /* Otherwise, cons on new symbols that are not already members. */
1127 tem2
= Vcurrent_load_list
;
1129 while (CONSP (tem2
))
1131 newelt
= Fcar (tem2
);
1133 if (NILP (Fmemq (newelt
, tem
)))
1134 Fsetcar (tail
, Fcons (Fcar (tem
),
1135 Fcons (newelt
, Fcdr (tem
))));
1148 /* If we're loading, cons the new assoc onto the front of load-history,
1149 the most-recently-loaded position. Also do this if we didn't find
1150 an existing member for the current source. */
1151 if (loading
|| !foundit
)
1152 Vload_history
= Fcons (Fnreverse (Vcurrent_load_list
),
1157 unreadpure (junk
) /* Used as unwind-protect function in readevalloop */
1165 readevalloop_1 (old
)
1168 load_convert_to_unibyte
= ! NILP (old
);
1172 /* Signal an `end-of-file' error, if possible with file name
1176 end_of_file_error ()
1180 if (STRINGP (Vload_file_name
))
1181 data
= Fcons (Vload_file_name
, Qnil
);
1185 Fsignal (Qend_of_file
, data
);
1188 /* UNIBYTE specifies how to set load_convert_to_unibyte
1189 for this invocation.
1190 READFUN, if non-nil, is used instead of `read'. */
1193 readevalloop (readcharfun
, stream
, sourcename
, evalfun
, printflag
, unibyte
, readfun
)
1194 Lisp_Object readcharfun
;
1196 Lisp_Object sourcename
;
1197 Lisp_Object (*evalfun
) ();
1199 Lisp_Object unibyte
, readfun
;
1202 register Lisp_Object val
;
1203 int count
= specpdl_ptr
- specpdl
;
1204 struct gcpro gcpro1
;
1205 struct buffer
*b
= 0;
1206 int continue_reading_p
;
1208 if (BUFFERP (readcharfun
))
1209 b
= XBUFFER (readcharfun
);
1210 else if (MARKERP (readcharfun
))
1211 b
= XMARKER (readcharfun
)->buffer
;
1213 specbind (Qstandard_input
, readcharfun
);
1214 specbind (Qcurrent_load_list
, Qnil
);
1215 record_unwind_protect (readevalloop_1
, load_convert_to_unibyte
? Qt
: Qnil
);
1216 load_convert_to_unibyte
= !NILP (unibyte
);
1218 readchar_backlog
= -1;
1220 GCPRO1 (sourcename
);
1222 LOADHIST_ATTACH (sourcename
);
1224 continue_reading_p
= 1;
1225 while (continue_reading_p
)
1227 if (b
!= 0 && NILP (b
->name
))
1228 error ("Reading from killed buffer");
1234 while ((c
= READCHAR
) != '\n' && c
!= -1);
1239 /* Ignore whitespace here, so we can detect eof. */
1240 if (c
== ' ' || c
== '\t' || c
== '\n' || c
== '\f' || c
== '\r')
1243 if (!NILP (Vpurify_flag
) && c
== '(')
1245 int count1
= specpdl_ptr
- specpdl
;
1246 record_unwind_protect (unreadpure
, Qnil
);
1247 val
= read_list (-1, readcharfun
);
1248 unbind_to (count1
, Qnil
);
1253 read_objects
= Qnil
;
1254 if (!NILP (readfun
))
1256 val
= call1 (readfun
, readcharfun
);
1258 /* If READCHARFUN has set point to ZV, we should
1259 stop reading, even if the form read sets point
1260 to a different value when evaluated. */
1261 if (BUFFERP (readcharfun
))
1263 struct buffer
*b
= XBUFFER (readcharfun
);
1264 if (BUF_PT (b
) == BUF_ZV (b
))
1265 continue_reading_p
= 0;
1268 else if (! NILP (Vload_read_function
))
1269 val
= call1 (Vload_read_function
, readcharfun
);
1271 val
= read0 (readcharfun
);
1274 val
= (*evalfun
) (val
);
1278 Vvalues
= Fcons (val
, Vvalues
);
1279 if (EQ (Vstandard_output
, Qt
))
1286 build_load_history (stream
, sourcename
);
1289 unbind_to (count
, Qnil
);
1292 DEFUN ("eval-buffer", Feval_buffer
, Seval_buffer
, 0, 5, "",
1293 "Execute the current buffer as Lisp code.\n\
1294 Programs can pass two arguments, BUFFER and PRINTFLAG.\n\
1295 BUFFER is the buffer to evaluate (nil means use current buffer).\n\
1296 PRINTFLAG controls printing of output:\n\
1297 nil means discard it; anything else is stream for print.\n\
1299 If the optional third argument FILENAME is non-nil,\n\
1300 it specifies the file name to use for `load-history'.\n\
1301 The optional fourth argument UNIBYTE specifies `load-convert-to-unibyte'\n\
1302 for this invocation.\n\
1304 The optional fifth argument DO-ALLOW-PRINT, if not-nil, specifies that\n\
1305 `print' and related functions should work normally even if PRINTFLAG is nil.\n\
1307 This function preserves the position of point.")
1308 (buffer
, printflag
, filename
, unibyte
, do_allow_print
)
1309 Lisp_Object buffer
, printflag
, filename
, unibyte
, do_allow_print
;
1311 int count
= specpdl_ptr
- specpdl
;
1312 Lisp_Object tem
, buf
;
1315 buf
= Fcurrent_buffer ();
1317 buf
= Fget_buffer (buffer
);
1319 error ("No such buffer");
1321 if (NILP (printflag
) && NILP (do_allow_print
))
1326 if (NILP (filename
))
1327 filename
= XBUFFER (buf
)->filename
;
1329 specbind (Qstandard_output
, tem
);
1330 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1331 BUF_SET_PT (XBUFFER (buf
), BUF_BEGV (XBUFFER (buf
)));
1332 readevalloop (buf
, 0, filename
, Feval
, !NILP (printflag
), unibyte
, Qnil
);
1333 unbind_to (count
, Qnil
);
1339 XDEFUN ("eval-current-buffer", Feval_current_buffer
, Seval_current_buffer
, 0, 1, "",
1340 "Execute the current buffer as Lisp code.\n\
1341 Programs can pass argument PRINTFLAG which controls printing of output:\n\
1342 nil means discard it; anything else is stream for print.\n\
1344 If there is no error, point does not move. If there is an error,\n\
1345 point remains at the end of the last character read from the buffer.")
1347 Lisp_Object printflag
;
1349 int count
= specpdl_ptr
- specpdl
;
1350 Lisp_Object tem
, cbuf
;
1352 cbuf
= Fcurrent_buffer ()
1354 if (NILP (printflag
))
1358 specbind (Qstandard_output
, tem
);
1359 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1361 readevalloop (cbuf
, 0, XBUFFER (cbuf
)->filename
, Feval
,
1362 !NILP (printflag
), Qnil
, Qnil
);
1363 return unbind_to (count
, Qnil
);
1367 DEFUN ("eval-region", Feval_region
, Seval_region
, 2, 4, "r",
1368 "Execute the region as Lisp code.\n\
1369 When called from programs, expects two arguments,\n\
1370 giving starting and ending indices in the current buffer\n\
1371 of the text to be executed.\n\
1372 Programs can pass third argument PRINTFLAG which controls output:\n\
1373 nil means discard it; anything else is stream for printing it.\n\
1374 Also the fourth argument READ-FUNCTION, if non-nil, is used\n\
1375 instead of `read' to read each expression. It gets one argument\n\
1376 which is the input stream for reading characters.\n\
1378 This function does not move point.")
1379 (start
, end
, printflag
, read_function
)
1380 Lisp_Object start
, end
, printflag
, read_function
;
1382 int count
= specpdl_ptr
- specpdl
;
1383 Lisp_Object tem
, cbuf
;
1385 cbuf
= Fcurrent_buffer ();
1387 if (NILP (printflag
))
1391 specbind (Qstandard_output
, tem
);
1393 if (NILP (printflag
))
1394 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1395 record_unwind_protect (save_restriction_restore
, save_restriction_save ());
1397 /* This both uses start and checks its type. */
1399 Fnarrow_to_region (make_number (BEGV
), end
);
1400 readevalloop (cbuf
, 0, XBUFFER (cbuf
)->filename
, Feval
,
1401 !NILP (printflag
), Qnil
, read_function
);
1403 return unbind_to (count
, Qnil
);
1407 DEFUN ("read", Fread
, Sread
, 0, 1, 0,
1408 "Read one Lisp expression as text from STREAM, return as Lisp object.\n\
1409 If STREAM is nil, use the value of `standard-input' (which see).\n\
1410 STREAM or the value of `standard-input' may be:\n\
1411 a buffer (read from point and advance it)\n\
1412 a marker (read from where it points and advance it)\n\
1413 a function (call it with no arguments for each character,\n\
1414 call it with a char as argument to push a char back)\n\
1415 a string (takes text from string, starting at the beginning)\n\
1416 t (read text line using minibuffer and use it, or read from\n\
1417 standard input in batch mode).")
1421 extern Lisp_Object
Fread_minibuffer ();
1424 stream
= Vstandard_input
;
1425 if (EQ (stream
, Qt
))
1426 stream
= Qread_char
;
1428 readchar_backlog
= -1;
1429 new_backquote_flag
= 0;
1430 read_objects
= Qnil
;
1432 if (EQ (stream
, Qread_char
))
1433 return Fread_minibuffer (build_string ("Lisp expression: "), Qnil
);
1435 if (STRINGP (stream
))
1436 return Fcar (Fread_from_string (stream
, Qnil
, Qnil
));
1438 return read0 (stream
);
1441 DEFUN ("read-from-string", Fread_from_string
, Sread_from_string
, 1, 3, 0,
1442 "Read one Lisp expression which is represented as text by STRING.\n\
1443 Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX).\n\
1444 START and END optionally delimit a substring of STRING from which to read;\n\
1445 they default to 0 and (length STRING) respectively.")
1446 (string
, start
, end
)
1447 Lisp_Object string
, start
, end
;
1449 int startval
, endval
;
1452 CHECK_STRING (string
,0);
1455 endval
= XSTRING (string
)->size
;
1458 CHECK_NUMBER (end
, 2);
1459 endval
= XINT (end
);
1460 if (endval
< 0 || endval
> XSTRING (string
)->size
)
1461 args_out_of_range (string
, end
);
1468 CHECK_NUMBER (start
, 1);
1469 startval
= XINT (start
);
1470 if (startval
< 0 || startval
> endval
)
1471 args_out_of_range (string
, start
);
1474 read_from_string_index
= startval
;
1475 read_from_string_index_byte
= string_char_to_byte (string
, startval
);
1476 read_from_string_limit
= endval
;
1478 new_backquote_flag
= 0;
1479 read_objects
= Qnil
;
1481 tem
= read0 (string
);
1482 return Fcons (tem
, make_number (read_from_string_index
));
1485 /* Use this for recursive reads, in contexts where internal tokens
1490 Lisp_Object readcharfun
;
1492 register Lisp_Object val
;
1495 val
= read1 (readcharfun
, &c
, 0);
1497 Fsignal (Qinvalid_read_syntax
, Fcons (Fmake_string (make_number (1),
1504 static int read_buffer_size
;
1505 static char *read_buffer
;
1507 /* Read multibyte form and return it as a character. C is a first
1508 byte of multibyte form, and rest of them are read from
1512 read_multibyte (c
, readcharfun
)
1514 Lisp_Object readcharfun
;
1516 /* We need the actual character code of this multibyte
1518 unsigned char str
[MAX_MULTIBYTE_LENGTH
];
1523 while ((c
= READCHAR
) >= 0xA0
1524 && len
< MAX_MULTIBYTE_LENGTH
)
1527 if (UNIBYTE_STR_AS_MULTIBYTE_P (str
, len
, bytes
))
1528 return STRING_CHAR (str
, len
);
1529 /* The byte sequence is not valid as multibyte. Unread all bytes
1530 but the first one, and return the first byte. */
1536 /* Read a \-escape sequence, assuming we already read the `\'. */
1539 read_escape (readcharfun
, stringp
)
1540 Lisp_Object readcharfun
;
1543 register int c
= READCHAR
;
1547 error ("End of file");
1577 error ("Invalid escape character syntax");
1580 c
= read_escape (readcharfun
, 0);
1581 return c
| meta_modifier
;
1586 error ("Invalid escape character syntax");
1589 c
= read_escape (readcharfun
, 0);
1590 return c
| shift_modifier
;
1595 error ("Invalid escape character syntax");
1598 c
= read_escape (readcharfun
, 0);
1599 return c
| hyper_modifier
;
1604 error ("Invalid escape character syntax");
1607 c
= read_escape (readcharfun
, 0);
1608 return c
| alt_modifier
;
1613 error ("Invalid escape character syntax");
1616 c
= read_escape (readcharfun
, 0);
1617 return c
| super_modifier
;
1622 error ("Invalid escape character syntax");
1626 c
= read_escape (readcharfun
, 0);
1627 if ((c
& ~CHAR_MODIFIER_MASK
) == '?')
1628 return 0177 | (c
& CHAR_MODIFIER_MASK
);
1629 else if (! SINGLE_BYTE_CHAR_P ((c
& ~CHAR_MODIFIER_MASK
)))
1630 return c
| ctrl_modifier
;
1631 /* ASCII control chars are made from letters (both cases),
1632 as well as the non-letters within 0100...0137. */
1633 else if ((c
& 0137) >= 0101 && (c
& 0137) <= 0132)
1634 return (c
& (037 | ~0177));
1635 else if ((c
& 0177) >= 0100 && (c
& 0177) <= 0137)
1636 return (c
& (037 | ~0177));
1638 return c
| ctrl_modifier
;
1648 /* An octal escape, as in ANSI C. */
1650 register int i
= c
- '0';
1651 register int count
= 0;
1654 if ((c
= READCHAR
) >= '0' && c
<= '7')
1669 /* A hex escape, as in ANSI C. */
1675 if (c
>= '0' && c
<= '9')
1680 else if ((c
>= 'a' && c
<= 'f')
1681 || (c
>= 'A' && c
<= 'F'))
1684 if (c
>= 'a' && c
<= 'f')
1699 if (BASE_LEADING_CODE_P (c
))
1700 c
= read_multibyte (c
, readcharfun
);
1706 /* Read an integer in radix RADIX using READCHARFUN to read
1707 characters. RADIX must be in the interval [2..36]; if it isn't, a
1708 read error is signaled . Value is the integer read. Signals an
1709 error if encountering invalid read syntax or if RADIX is out of
1713 read_integer (readcharfun
, radix
)
1714 Lisp_Object readcharfun
;
1717 int ndigits
= 0, invalid_p
, c
, sign
= 0;
1718 EMACS_INT number
= 0;
1720 if (radix
< 2 || radix
> 36)
1724 number
= ndigits
= invalid_p
= 0;
1740 if (c
>= '0' && c
<= '9')
1742 else if (c
>= 'a' && c
<= 'z')
1743 digit
= c
- 'a' + 10;
1744 else if (c
>= 'A' && c
<= 'Z')
1745 digit
= c
- 'A' + 10;
1752 if (digit
< 0 || digit
>= radix
)
1755 number
= radix
* number
+ digit
;
1761 if (ndigits
== 0 || invalid_p
)
1764 sprintf (buf
, "integer, radix %d", radix
);
1765 Fsignal (Qinvalid_read_syntax
, Fcons (build_string (buf
), Qnil
));
1768 return make_number (sign
* number
);
1772 /* If the next token is ')' or ']' or '.', we store that character
1773 in *PCH and the return value is not interesting. Else, we store
1774 zero in *PCH and we read and return one lisp object.
1776 FIRST_IN_LIST is nonzero if this is the first element of a list. */
1779 read1 (readcharfun
, pch
, first_in_list
)
1780 register Lisp_Object readcharfun
;
1785 int uninterned_symbol
= 0;
1793 end_of_file_error ();
1798 return read_list (0, readcharfun
);
1801 return read_vector (readcharfun
, 0);
1818 tmp
= read_vector (readcharfun
, 0);
1819 if (XVECTOR (tmp
)->size
< CHAR_TABLE_STANDARD_SLOTS
1820 || XVECTOR (tmp
)->size
> CHAR_TABLE_STANDARD_SLOTS
+ 10)
1821 error ("Invalid size char-table");
1822 XSETCHAR_TABLE (tmp
, XCHAR_TABLE (tmp
));
1823 XCHAR_TABLE (tmp
)->top
= Qt
;
1832 tmp
= read_vector (readcharfun
, 0);
1833 if (XVECTOR (tmp
)->size
!= SUB_CHAR_TABLE_STANDARD_SLOTS
)
1834 error ("Invalid size char-table");
1835 XSETCHAR_TABLE (tmp
, XCHAR_TABLE (tmp
));
1836 XCHAR_TABLE (tmp
)->top
= Qnil
;
1839 Fsignal (Qinvalid_read_syntax
,
1840 Fcons (make_string ("#^^", 3), Qnil
));
1842 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#^", 2), Qnil
));
1847 length
= read1 (readcharfun
, pch
, first_in_list
);
1851 Lisp_Object tmp
, val
;
1852 int size_in_chars
= ((XFASTINT (length
) + BITS_PER_CHAR
- 1)
1856 tmp
= read1 (readcharfun
, pch
, first_in_list
);
1857 if (size_in_chars
!= XSTRING (tmp
)->size
1858 /* We used to print 1 char too many
1859 when the number of bits was a multiple of 8.
1860 Accept such input in case it came from an old version. */
1861 && ! (XFASTINT (length
)
1862 == (XSTRING (tmp
)->size
- 1) * BITS_PER_CHAR
))
1863 Fsignal (Qinvalid_read_syntax
,
1864 Fcons (make_string ("#&...", 5), Qnil
));
1866 val
= Fmake_bool_vector (length
, Qnil
);
1867 bcopy (XSTRING (tmp
)->data
, XBOOL_VECTOR (val
)->data
,
1869 /* Clear the extraneous bits in the last byte. */
1870 if (XINT (length
) != size_in_chars
* BITS_PER_CHAR
)
1871 XBOOL_VECTOR (val
)->data
[size_in_chars
- 1]
1872 &= (1 << (XINT (length
) % BITS_PER_CHAR
)) - 1;
1875 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#&...", 5),
1880 /* Accept compiled functions at read-time so that we don't have to
1881 build them using function calls. */
1883 tmp
= read_vector (readcharfun
, 1);
1884 return Fmake_byte_code (XVECTOR (tmp
)->size
,
1885 XVECTOR (tmp
)->contents
);
1890 struct gcpro gcpro1
;
1893 /* Read the string itself. */
1894 tmp
= read1 (readcharfun
, &ch
, 0);
1895 if (ch
!= 0 || !STRINGP (tmp
))
1896 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#", 1), Qnil
));
1898 /* Read the intervals and their properties. */
1901 Lisp_Object beg
, end
, plist
;
1903 beg
= read1 (readcharfun
, &ch
, 0);
1908 end
= read1 (readcharfun
, &ch
, 0);
1910 plist
= read1 (readcharfun
, &ch
, 0);
1912 Fsignal (Qinvalid_read_syntax
,
1913 Fcons (build_string ("invalid string property list"),
1915 Fset_text_properties (beg
, end
, plist
, tmp
);
1921 /* #@NUMBER is used to skip NUMBER following characters.
1922 That's used in .elc files to skip over doc strings
1923 and function definitions. */
1928 /* Read a decimal integer. */
1929 while ((c
= READCHAR
) >= 0
1930 && c
>= '0' && c
<= '9')
1938 if (load_force_doc_strings
&& EQ (readcharfun
, Qget_file_char
))
1940 /* If we are supposed to force doc strings into core right now,
1941 record the last string that we skipped,
1942 and record where in the file it comes from. */
1944 /* But first exchange saved_doc_string
1945 with prev_saved_doc_string, so we save two strings. */
1947 char *temp
= saved_doc_string
;
1948 int temp_size
= saved_doc_string_size
;
1949 file_offset temp_pos
= saved_doc_string_position
;
1950 int temp_len
= saved_doc_string_length
;
1952 saved_doc_string
= prev_saved_doc_string
;
1953 saved_doc_string_size
= prev_saved_doc_string_size
;
1954 saved_doc_string_position
= prev_saved_doc_string_position
;
1955 saved_doc_string_length
= prev_saved_doc_string_length
;
1957 prev_saved_doc_string
= temp
;
1958 prev_saved_doc_string_size
= temp_size
;
1959 prev_saved_doc_string_position
= temp_pos
;
1960 prev_saved_doc_string_length
= temp_len
;
1963 if (saved_doc_string_size
== 0)
1965 saved_doc_string_size
= nskip
+ 100;
1966 saved_doc_string
= (char *) xmalloc (saved_doc_string_size
);
1968 if (nskip
> saved_doc_string_size
)
1970 saved_doc_string_size
= nskip
+ 100;
1971 saved_doc_string
= (char *) xrealloc (saved_doc_string
,
1972 saved_doc_string_size
);
1975 saved_doc_string_position
= file_tell (instream
);
1977 /* Copy that many characters into saved_doc_string. */
1978 for (i
= 0; i
< nskip
&& c
>= 0; i
++)
1979 saved_doc_string
[i
] = c
= READCHAR
;
1981 saved_doc_string_length
= i
;
1985 /* Skip that many characters. */
1986 for (i
= 0; i
< nskip
&& c
>= 0; i
++)
1993 return Vload_file_name
;
1995 return Fcons (Qfunction
, Fcons (read0 (readcharfun
), Qnil
));
1996 /* #:foo is the uninterned symbol named foo. */
1999 uninterned_symbol
= 1;
2003 /* Reader forms that can reuse previously read objects. */
2004 if (c
>= '0' && c
<= '9')
2009 /* Read a non-negative integer. */
2010 while (c
>= '0' && c
<= '9')
2016 /* #n=object returns object, but associates it with n for #n#. */
2019 /* Make a placeholder for #n# to use temporarily */
2020 Lisp_Object placeholder
;
2023 placeholder
= Fcons(Qnil
, Qnil
);
2024 cell
= Fcons (make_number (n
), placeholder
);
2025 read_objects
= Fcons (cell
, read_objects
);
2027 /* Read the object itself. */
2028 tem
= read0 (readcharfun
);
2030 /* Now put it everywhere the placeholder was... */
2031 substitute_object_in_subtree (tem
, placeholder
);
2033 /* ...and #n# will use the real value from now on. */
2034 Fsetcdr (cell
, tem
);
2038 /* #n# returns a previously read object. */
2041 tem
= Fassq (make_number (n
), read_objects
);
2044 /* Fall through to error message. */
2046 else if (c
== 'r' || c
== 'R')
2047 return read_integer (readcharfun
, n
);
2049 /* Fall through to error message. */
2051 else if (c
== 'x' || c
== 'X')
2052 return read_integer (readcharfun
, 16);
2053 else if (c
== 'o' || c
== 'O')
2054 return read_integer (readcharfun
, 8);
2055 else if (c
== 'b' || c
== 'B')
2056 return read_integer (readcharfun
, 2);
2059 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#", 1), Qnil
));
2062 while ((c
= READCHAR
) >= 0 && c
!= '\n');
2067 return Fcons (Qquote
, Fcons (read0 (readcharfun
), Qnil
));
2077 new_backquote_flag
= 1;
2078 value
= read0 (readcharfun
);
2079 new_backquote_flag
= 0;
2081 return Fcons (Qbackquote
, Fcons (value
, Qnil
));
2085 if (new_backquote_flag
)
2087 Lisp_Object comma_type
= Qnil
;
2092 comma_type
= Qcomma_at
;
2094 comma_type
= Qcomma_dot
;
2097 if (ch
>= 0) UNREAD (ch
);
2098 comma_type
= Qcomma
;
2101 new_backquote_flag
= 0;
2102 value
= read0 (readcharfun
);
2103 new_backquote_flag
= 1;
2104 return Fcons (comma_type
, Fcons (value
, Qnil
));
2113 end_of_file_error ();
2116 c
= read_escape (readcharfun
, 0);
2117 else if (BASE_LEADING_CODE_P (c
))
2118 c
= read_multibyte (c
, readcharfun
);
2120 return make_number (c
);
2125 register char *p
= read_buffer
;
2126 register char *end
= read_buffer
+ read_buffer_size
;
2128 /* Nonzero if we saw an escape sequence specifying
2129 a multibyte character. */
2130 int force_multibyte
= 0;
2131 /* Nonzero if we saw an escape sequence specifying
2132 a single-byte character. */
2133 int force_singlebyte
= 0;
2137 while ((c
= READCHAR
) >= 0
2140 if (end
- p
< MAX_MULTIBYTE_LENGTH
)
2142 int offset
= p
- read_buffer
;
2143 read_buffer
= (char *) xrealloc (read_buffer
,
2144 read_buffer_size
*= 2);
2145 p
= read_buffer
+ offset
;
2146 end
= read_buffer
+ read_buffer_size
;
2151 c
= read_escape (readcharfun
, 1);
2153 /* C is -1 if \ newline has just been seen */
2156 if (p
== read_buffer
)
2161 /* If an escape specifies a non-ASCII single-byte character,
2162 this must be a unibyte string. */
2163 if (SINGLE_BYTE_CHAR_P ((c
& ~CHAR_MODIFIER_MASK
))
2164 && ! ASCII_BYTE_P ((c
& ~CHAR_MODIFIER_MASK
)))
2165 force_singlebyte
= 1;
2168 if (! SINGLE_BYTE_CHAR_P ((c
& ~CHAR_MODIFIER_MASK
)))
2170 /* Any modifiers for a multibyte character are invalid. */
2171 if (c
& CHAR_MODIFIER_MASK
)
2172 error ("Invalid modifier in string");
2173 p
+= CHAR_STRING (c
, p
);
2174 force_multibyte
= 1;
2178 /* Allow `\C- ' and `\C-?'. */
2179 if (c
== (CHAR_CTL
| ' '))
2181 else if (c
== (CHAR_CTL
| '?'))
2186 /* Shift modifier is valid only with [A-Za-z]. */
2187 if ((c
& 0377) >= 'A' && (c
& 0377) <= 'Z')
2189 else if ((c
& 0377) >= 'a' && (c
& 0377) <= 'z')
2190 c
= (c
& ~CHAR_SHIFT
) - ('a' - 'A');
2194 /* Move the meta bit to the right place for a string. */
2195 c
= (c
& ~CHAR_META
) | 0x80;
2197 error ("Invalid modifier in string");
2202 end_of_file_error ();
2204 /* If purifying, and string starts with \ newline,
2205 return zero instead. This is for doc strings
2206 that we are really going to find in etc/DOC.nn.nn */
2207 if (!NILP (Vpurify_flag
) && NILP (Vdoc_file_name
) && cancel
)
2208 return make_number (0);
2210 if (force_multibyte
)
2211 p
= read_buffer
+ str_as_multibyte (read_buffer
, end
- read_buffer
,
2212 p
- read_buffer
, &nchars
);
2213 else if (force_singlebyte
)
2214 nchars
= p
- read_buffer
;
2215 else if (load_convert_to_unibyte
)
2218 p
= read_buffer
+ str_as_multibyte (read_buffer
, end
- read_buffer
,
2219 p
- read_buffer
, &nchars
);
2220 if (p
- read_buffer
!= nchars
)
2222 string
= make_multibyte_string (read_buffer
, nchars
,
2224 return Fstring_make_unibyte (string
);
2227 else if (EQ (readcharfun
, Qget_file_char
)
2228 || EQ (readcharfun
, Qlambda
))
2229 /* Nowadays, reading directly from a file is used only for
2230 compiled Emacs Lisp files, and those always use the
2231 Emacs internal encoding. Meanwhile, Qlambda is used
2232 for reading dynamic byte code (compiled with
2233 byte-compile-dynamic = t). */
2234 p
= read_buffer
+ str_as_multibyte (read_buffer
, end
- read_buffer
,
2235 p
- read_buffer
, &nchars
);
2237 /* In all other cases, if we read these bytes as
2238 separate characters, treat them as separate characters now. */
2239 nchars
= p
- read_buffer
;
2242 return make_pure_string (read_buffer
, nchars
, p
- read_buffer
,
2244 || (p
- read_buffer
!= nchars
)));
2245 return make_specified_string (read_buffer
, nchars
, p
- read_buffer
,
2247 || (p
- read_buffer
!= nchars
)));
2252 int next_char
= READCHAR
;
2255 if (next_char
<= 040
2256 || index ("\"'`,(", next_char
))
2262 /* Otherwise, we fall through! Note that the atom-reading loop
2263 below will now loop at least once, assuring that we will not
2264 try to UNREAD two characters in a row. */
2268 if (c
<= 040) goto retry
;
2270 char *p
= read_buffer
;
2274 char *end
= read_buffer
+ read_buffer_size
;
2277 && !(c
== '\"' || c
== '\'' || c
== ';'
2278 || c
== '(' || c
== ')'
2279 || c
== '[' || c
== ']' || c
== '#'))
2281 if (end
- p
< MAX_MULTIBYTE_LENGTH
)
2283 int offset
= p
- read_buffer
;
2284 read_buffer
= (char *) xrealloc (read_buffer
,
2285 read_buffer_size
*= 2);
2286 p
= read_buffer
+ offset
;
2287 end
= read_buffer
+ read_buffer_size
;
2294 end_of_file_error ();
2298 if (! SINGLE_BYTE_CHAR_P (c
))
2299 p
+= CHAR_STRING (c
, p
);
2308 int offset
= p
- read_buffer
;
2309 read_buffer
= (char *) xrealloc (read_buffer
,
2310 read_buffer_size
*= 2);
2311 p
= read_buffer
+ offset
;
2312 end
= read_buffer
+ read_buffer_size
;
2319 if (!quoted
&& !uninterned_symbol
)
2322 register Lisp_Object val
;
2324 if (*p1
== '+' || *p1
== '-') p1
++;
2325 /* Is it an integer? */
2328 while (p1
!= p
&& (c
= *p1
) >= '0' && c
<= '9') p1
++;
2329 /* Integers can have trailing decimal points. */
2330 if (p1
> read_buffer
&& p1
< p
&& *p1
== '.') p1
++;
2332 /* It is an integer. */
2336 if (sizeof (int) == sizeof (EMACS_INT
))
2337 XSETINT (val
, atoi (read_buffer
));
2338 else if (sizeof (long) == sizeof (EMACS_INT
))
2339 XSETINT (val
, atol (read_buffer
));
2345 if (isfloat_string (read_buffer
))
2347 /* Compute NaN and infinities using 0.0 in a variable,
2348 to cope with compilers that think they are smarter
2354 /* Negate the value ourselves. This treats 0, NaNs,
2355 and infinity properly on IEEE floating point hosts,
2356 and works around a common bug where atof ("-0.0")
2358 int negative
= read_buffer
[0] == '-';
2360 /* The only way p[-1] can be 'F' or 'N', after isfloat_string
2361 returns 1, is if the input ends in e+INF or e+NaN. */
2368 value
= zero
/ zero
;
2371 value
= atof (read_buffer
+ negative
);
2375 return make_float (negative
? - value
: value
);
2379 if (uninterned_symbol
)
2380 return make_symbol (read_buffer
);
2382 return intern (read_buffer
);
2388 /* List of nodes we've seen during substitute_object_in_subtree. */
2389 static Lisp_Object seen_list
;
2392 substitute_object_in_subtree (object
, placeholder
)
2394 Lisp_Object placeholder
;
2396 Lisp_Object check_object
;
2398 /* We haven't seen any objects when we start. */
2401 /* Make all the substitutions. */
2403 = substitute_object_recurse (object
, placeholder
, object
);
2405 /* Clear seen_list because we're done with it. */
2408 /* The returned object here is expected to always eq the
2410 if (!EQ (check_object
, object
))
2411 error ("Unexpected mutation error in reader");
2414 /* Feval doesn't get called from here, so no gc protection is needed. */
2415 #define SUBSTITUTE(get_val, set_val) \
2417 Lisp_Object old_value = get_val; \
2418 Lisp_Object true_value \
2419 = substitute_object_recurse (object, placeholder,\
2422 if (!EQ (old_value, true_value)) \
2429 substitute_object_recurse (object
, placeholder
, subtree
)
2431 Lisp_Object placeholder
;
2432 Lisp_Object subtree
;
2434 /* If we find the placeholder, return the target object. */
2435 if (EQ (placeholder
, subtree
))
2438 /* If we've been to this node before, don't explore it again. */
2439 if (!EQ (Qnil
, Fmemq (subtree
, seen_list
)))
2442 /* If this node can be the entry point to a cycle, remember that
2443 we've seen it. It can only be such an entry point if it was made
2444 by #n=, which means that we can find it as a value in
2446 if (!EQ (Qnil
, Frassq (subtree
, read_objects
)))
2447 seen_list
= Fcons (subtree
, seen_list
);
2449 /* Recurse according to subtree's type.
2450 Every branch must return a Lisp_Object. */
2451 switch (XTYPE (subtree
))
2453 case Lisp_Vectorlike
:
2456 int length
= XINT (Flength(subtree
));
2457 for (i
= 0; i
< length
; i
++)
2459 Lisp_Object idx
= make_number (i
);
2460 SUBSTITUTE (Faref (subtree
, idx
),
2461 Faset (subtree
, idx
, true_value
));
2468 SUBSTITUTE (Fcar_safe (subtree
),
2469 Fsetcar (subtree
, true_value
));
2470 SUBSTITUTE (Fcdr_safe (subtree
),
2471 Fsetcdr (subtree
, true_value
));
2477 /* Check for text properties in each interval.
2478 substitute_in_interval contains part of the logic. */
2480 INTERVAL root_interval
= XSTRING (subtree
)->intervals
;
2481 Lisp_Object arg
= Fcons (object
, placeholder
);
2483 traverse_intervals (root_interval
, 1, 0,
2484 &substitute_in_interval
, arg
);
2489 /* Other types don't recurse any further. */
2495 /* Helper function for substitute_object_recurse. */
2497 substitute_in_interval (interval
, arg
)
2501 Lisp_Object object
= Fcar (arg
);
2502 Lisp_Object placeholder
= Fcdr (arg
);
2504 SUBSTITUTE(interval
->plist
, interval
->plist
= true_value
);
2523 if (*cp
== '+' || *cp
== '-')
2526 if (*cp
>= '0' && *cp
<= '9')
2529 while (*cp
>= '0' && *cp
<= '9')
2537 if (*cp
>= '0' && *cp
<= '9')
2540 while (*cp
>= '0' && *cp
<= '9')
2543 if (*cp
== 'e' || *cp
== 'E')
2547 if (*cp
== '+' || *cp
== '-')
2551 if (*cp
>= '0' && *cp
<= '9')
2554 while (*cp
>= '0' && *cp
<= '9')
2557 else if (cp
== start
)
2559 else if (cp
[-1] == '+' && cp
[0] == 'I' && cp
[1] == 'N' && cp
[2] == 'F')
2564 else if (cp
[-1] == '+' && cp
[0] == 'N' && cp
[1] == 'a' && cp
[2] == 'N')
2570 return (((*cp
== 0) || (*cp
== ' ') || (*cp
== '\t') || (*cp
== '\n') || (*cp
== '\r') || (*cp
== '\f'))
2571 && (state
== (LEAD_INT
|DOT_CHAR
|TRAIL_INT
)
2572 || state
== (DOT_CHAR
|TRAIL_INT
)
2573 || state
== (LEAD_INT
|E_CHAR
|EXP_INT
)
2574 || state
== (LEAD_INT
|DOT_CHAR
|TRAIL_INT
|E_CHAR
|EXP_INT
)
2575 || state
== (DOT_CHAR
|TRAIL_INT
|E_CHAR
|EXP_INT
)));
2580 read_vector (readcharfun
, bytecodeflag
)
2581 Lisp_Object readcharfun
;
2586 register Lisp_Object
*ptr
;
2587 register Lisp_Object tem
, item
, vector
;
2588 register struct Lisp_Cons
*otem
;
2591 tem
= read_list (1, readcharfun
);
2592 len
= Flength (tem
);
2593 vector
= (read_pure
? make_pure_vector (XINT (len
)) : Fmake_vector (len
, Qnil
));
2595 size
= XVECTOR (vector
)->size
;
2596 ptr
= XVECTOR (vector
)->contents
;
2597 for (i
= 0; i
< size
; i
++)
2600 /* If `load-force-doc-strings' is t when reading a lazily-loaded
2601 bytecode object, the docstring containing the bytecode and
2602 constants values must be treated as unibyte and passed to
2603 Fread, to get the actual bytecode string and constants vector. */
2604 if (bytecodeflag
&& load_force_doc_strings
)
2606 if (i
== COMPILED_BYTECODE
)
2608 if (!STRINGP (item
))
2609 error ("invalid byte code");
2611 /* Delay handling the bytecode slot until we know whether
2612 it is lazily-loaded (we can tell by whether the
2613 constants slot is nil). */
2614 ptr
[COMPILED_CONSTANTS
] = item
;
2617 else if (i
== COMPILED_CONSTANTS
)
2619 Lisp_Object bytestr
= ptr
[COMPILED_CONSTANTS
];
2623 /* Coerce string to unibyte (like string-as-unibyte,
2624 but without generating extra garbage and
2625 guaranteeing no change in the contents). */
2626 XSTRING (bytestr
)->size
= STRING_BYTES (XSTRING (bytestr
));
2627 SET_STRING_BYTES (XSTRING (bytestr
), -1);
2629 item
= Fread (bytestr
);
2631 error ("invalid byte code");
2633 otem
= XCONS (item
);
2634 bytestr
= XCAR (item
);
2639 /* Now handle the bytecode slot. */
2640 ptr
[COMPILED_BYTECODE
] = read_pure
? Fpurecopy (bytestr
) : bytestr
;
2643 ptr
[i
] = read_pure
? Fpurecopy (item
) : item
;
2651 /* FLAG = 1 means check for ] to terminate rather than ) and .
2652 FLAG = -1 means check for starting with defun
2653 and make structure pure. */
2656 read_list (flag
, readcharfun
)
2658 register Lisp_Object readcharfun
;
2660 /* -1 means check next element for defun,
2661 0 means don't check,
2662 1 means already checked and found defun. */
2663 int defunflag
= flag
< 0 ? -1 : 0;
2664 Lisp_Object val
, tail
;
2665 register Lisp_Object elt
, tem
;
2666 struct gcpro gcpro1
, gcpro2
;
2667 /* 0 is the normal case.
2668 1 means this list is a doc reference; replace it with the number 0.
2669 2 means this list is a doc reference; replace it with the doc string. */
2670 int doc_reference
= 0;
2672 /* Initialize this to 1 if we are reading a list. */
2673 int first_in_list
= flag
<= 0;
2682 elt
= read1 (readcharfun
, &ch
, first_in_list
);
2687 /* While building, if the list starts with #$, treat it specially. */
2688 if (EQ (elt
, Vload_file_name
)
2690 && !NILP (Vpurify_flag
))
2692 if (NILP (Vdoc_file_name
))
2693 /* We have not yet called Snarf-documentation, so assume
2694 this file is described in the DOC-MM.NN file
2695 and Snarf-documentation will fill in the right value later.
2696 For now, replace the whole list with 0. */
2699 /* We have already called Snarf-documentation, so make a relative
2700 file name for this file, so it can be found properly
2701 in the installed Lisp directory.
2702 We don't use Fexpand_file_name because that would make
2703 the directory absolute now. */
2704 elt
= concat2 (build_string ("../lisp/"),
2705 Ffile_name_nondirectory (elt
));
2707 else if (EQ (elt
, Vload_file_name
)
2709 && load_force_doc_strings
)
2718 Fsignal (Qinvalid_read_syntax
,
2719 Fcons (make_string (") or . in a vector", 18), Qnil
));
2727 XCDR (tail
) = read0 (readcharfun
);
2729 val
= read0 (readcharfun
);
2730 read1 (readcharfun
, &ch
, 0);
2734 if (doc_reference
== 1)
2735 return make_number (0);
2736 if (doc_reference
== 2)
2738 /* Get a doc string from the file we are loading.
2739 If it's in saved_doc_string, get it from there. */
2740 int pos
= XINT (XCDR (val
));
2741 /* Position is negative for user variables. */
2742 if (pos
< 0) pos
= -pos
;
2743 if (pos
>= saved_doc_string_position
2744 && pos
< (saved_doc_string_position
2745 + saved_doc_string_length
))
2747 int start
= pos
- saved_doc_string_position
;
2750 /* Process quoting with ^A,
2751 and find the end of the string,
2752 which is marked with ^_ (037). */
2753 for (from
= start
, to
= start
;
2754 saved_doc_string
[from
] != 037;)
2756 int c
= saved_doc_string
[from
++];
2759 c
= saved_doc_string
[from
++];
2761 saved_doc_string
[to
++] = c
;
2763 saved_doc_string
[to
++] = 0;
2765 saved_doc_string
[to
++] = 037;
2768 saved_doc_string
[to
++] = c
;
2771 return make_string (saved_doc_string
+ start
,
2774 /* Look in prev_saved_doc_string the same way. */
2775 else if (pos
>= prev_saved_doc_string_position
2776 && pos
< (prev_saved_doc_string_position
2777 + prev_saved_doc_string_length
))
2779 int start
= pos
- prev_saved_doc_string_position
;
2782 /* Process quoting with ^A,
2783 and find the end of the string,
2784 which is marked with ^_ (037). */
2785 for (from
= start
, to
= start
;
2786 prev_saved_doc_string
[from
] != 037;)
2788 int c
= prev_saved_doc_string
[from
++];
2791 c
= prev_saved_doc_string
[from
++];
2793 prev_saved_doc_string
[to
++] = c
;
2795 prev_saved_doc_string
[to
++] = 0;
2797 prev_saved_doc_string
[to
++] = 037;
2800 prev_saved_doc_string
[to
++] = c
;
2803 return make_string (prev_saved_doc_string
+ start
,
2807 return get_doc_string (val
, 0, 0);
2812 return Fsignal (Qinvalid_read_syntax
, Fcons (make_string (". in wrong context", 18), Qnil
));
2814 return Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("] in a list", 11), Qnil
));
2816 tem
= (read_pure
&& flag
<= 0
2817 ? pure_cons (elt
, Qnil
)
2818 : Fcons (elt
, Qnil
));
2825 defunflag
= EQ (elt
, Qdefun
);
2826 else if (defunflag
> 0)
2831 Lisp_Object Vobarray
;
2832 Lisp_Object initial_obarray
;
2834 /* oblookup stores the bucket number here, for the sake of Funintern. */
2836 int oblookup_last_bucket_number
;
2838 static int hash_string ();
2839 Lisp_Object
oblookup ();
2841 /* Get an error if OBARRAY is not an obarray.
2842 If it is one, return it. */
2845 check_obarray (obarray
)
2846 Lisp_Object obarray
;
2848 while (!VECTORP (obarray
) || XVECTOR (obarray
)->size
== 0)
2850 /* If Vobarray is now invalid, force it to be valid. */
2851 if (EQ (Vobarray
, obarray
)) Vobarray
= initial_obarray
;
2853 obarray
= wrong_type_argument (Qvectorp
, obarray
);
2858 /* Intern the C string STR: return a symbol with that name,
2859 interned in the current obarray. */
2866 int len
= strlen (str
);
2867 Lisp_Object obarray
;
2870 if (!VECTORP (obarray
) || XVECTOR (obarray
)->size
== 0)
2871 obarray
= check_obarray (obarray
);
2872 tem
= oblookup (obarray
, str
, len
, len
);
2875 return Fintern (make_string (str
, len
), obarray
);
2878 /* Create an uninterned symbol with name STR. */
2884 int len
= strlen (str
);
2886 return Fmake_symbol ((!NILP (Vpurify_flag
)
2887 ? make_pure_string (str
, len
, len
, 0)
2888 : make_string (str
, len
)));
2891 DEFUN ("intern", Fintern
, Sintern
, 1, 2, 0,
2892 "Return the canonical symbol whose name is STRING.\n\
2893 If there is none, one is created by this function and returned.\n\
2894 A second optional argument specifies the obarray to use;\n\
2895 it defaults to the value of `obarray'.")
2897 Lisp_Object string
, obarray
;
2899 register Lisp_Object tem
, sym
, *ptr
;
2901 if (NILP (obarray
)) obarray
= Vobarray
;
2902 obarray
= check_obarray (obarray
);
2904 CHECK_STRING (string
, 0);
2906 tem
= oblookup (obarray
, XSTRING (string
)->data
,
2907 XSTRING (string
)->size
,
2908 STRING_BYTES (XSTRING (string
)));
2909 if (!INTEGERP (tem
))
2912 if (!NILP (Vpurify_flag
))
2913 string
= Fpurecopy (string
);
2914 sym
= Fmake_symbol (string
);
2916 if (EQ (obarray
, initial_obarray
))
2917 XSYMBOL (sym
)->interned
= SYMBOL_INTERNED_IN_INITIAL_OBARRAY
;
2919 XSYMBOL (sym
)->interned
= SYMBOL_INTERNED
;
2921 if ((XSTRING (string
)->data
[0] == ':')
2922 && EQ (obarray
, initial_obarray
))
2924 XSYMBOL (sym
)->constant
= 1;
2925 XSYMBOL (sym
)->value
= sym
;
2928 ptr
= &XVECTOR (obarray
)->contents
[XINT (tem
)];
2930 XSYMBOL (sym
)->next
= XSYMBOL (*ptr
);
2932 XSYMBOL (sym
)->next
= 0;
2937 DEFUN ("intern-soft", Fintern_soft
, Sintern_soft
, 1, 2, 0,
2938 "Return the canonical symbol named NAME, or nil if none exists.\n\
2939 NAME may be a string or a symbol. If it is a symbol, that exact\n\
2940 symbol is searched for.\n\
2941 A second optional argument specifies the obarray to use;\n\
2942 it defaults to the value of `obarray'.")
2944 Lisp_Object name
, obarray
;
2946 register Lisp_Object tem
;
2947 struct Lisp_String
*string
;
2949 if (NILP (obarray
)) obarray
= Vobarray
;
2950 obarray
= check_obarray (obarray
);
2952 if (!SYMBOLP (name
))
2954 CHECK_STRING (name
, 0);
2955 string
= XSTRING (name
);
2958 string
= XSYMBOL (name
)->name
;
2960 tem
= oblookup (obarray
, string
->data
, string
->size
, STRING_BYTES (string
));
2961 if (INTEGERP (tem
) || (SYMBOLP (name
) && !EQ (name
, tem
)))
2967 DEFUN ("unintern", Funintern
, Sunintern
, 1, 2, 0,
2968 "Delete the symbol named NAME, if any, from OBARRAY.\n\
2969 The value is t if a symbol was found and deleted, nil otherwise.\n\
2970 NAME may be a string or a symbol. If it is a symbol, that symbol\n\
2971 is deleted, if it belongs to OBARRAY--no other symbol is deleted.\n\
2972 OBARRAY defaults to the value of the variable `obarray'.")
2974 Lisp_Object name
, obarray
;
2976 register Lisp_Object string
, tem
;
2979 if (NILP (obarray
)) obarray
= Vobarray
;
2980 obarray
= check_obarray (obarray
);
2983 XSETSTRING (string
, XSYMBOL (name
)->name
);
2986 CHECK_STRING (name
, 0);
2990 tem
= oblookup (obarray
, XSTRING (string
)->data
,
2991 XSTRING (string
)->size
,
2992 STRING_BYTES (XSTRING (string
)));
2995 /* If arg was a symbol, don't delete anything but that symbol itself. */
2996 if (SYMBOLP (name
) && !EQ (name
, tem
))
2999 XSYMBOL (tem
)->interned
= SYMBOL_UNINTERNED
;
3000 XSYMBOL (tem
)->constant
= 0;
3001 XSYMBOL (tem
)->indirect_variable
= 0;
3003 hash
= oblookup_last_bucket_number
;
3005 if (EQ (XVECTOR (obarray
)->contents
[hash
], tem
))
3007 if (XSYMBOL (tem
)->next
)
3008 XSETSYMBOL (XVECTOR (obarray
)->contents
[hash
], XSYMBOL (tem
)->next
);
3010 XSETINT (XVECTOR (obarray
)->contents
[hash
], 0);
3014 Lisp_Object tail
, following
;
3016 for (tail
= XVECTOR (obarray
)->contents
[hash
];
3017 XSYMBOL (tail
)->next
;
3020 XSETSYMBOL (following
, XSYMBOL (tail
)->next
);
3021 if (EQ (following
, tem
))
3023 XSYMBOL (tail
)->next
= XSYMBOL (following
)->next
;
3032 /* Return the symbol in OBARRAY whose names matches the string
3033 of SIZE characters (SIZE_BYTE bytes) at PTR.
3034 If there is no such symbol in OBARRAY, return nil.
3036 Also store the bucket number in oblookup_last_bucket_number. */
3039 oblookup (obarray
, ptr
, size
, size_byte
)
3040 Lisp_Object obarray
;
3042 int size
, size_byte
;
3046 register Lisp_Object tail
;
3047 Lisp_Object bucket
, tem
;
3049 if (!VECTORP (obarray
)
3050 || (obsize
= XVECTOR (obarray
)->size
) == 0)
3052 obarray
= check_obarray (obarray
);
3053 obsize
= XVECTOR (obarray
)->size
;
3055 /* This is sometimes needed in the middle of GC. */
3056 obsize
&= ~ARRAY_MARK_FLAG
;
3057 /* Combining next two lines breaks VMS C 2.3. */
3058 hash
= hash_string (ptr
, size_byte
);
3060 bucket
= XVECTOR (obarray
)->contents
[hash
];
3061 oblookup_last_bucket_number
= hash
;
3062 if (XFASTINT (bucket
) == 0)
3064 else if (!SYMBOLP (bucket
))
3065 error ("Bad data in guts of obarray"); /* Like CADR error message */
3067 for (tail
= bucket
; ; XSETSYMBOL (tail
, XSYMBOL (tail
)->next
))
3069 if (STRING_BYTES (XSYMBOL (tail
)->name
) == size_byte
3070 && XSYMBOL (tail
)->name
->size
== size
3071 && !bcmp (XSYMBOL (tail
)->name
->data
, ptr
, size_byte
))
3073 else if (XSYMBOL (tail
)->next
== 0)
3076 XSETINT (tem
, hash
);
3081 hash_string (ptr
, len
)
3085 register unsigned char *p
= ptr
;
3086 register unsigned char *end
= p
+ len
;
3087 register unsigned char c
;
3088 register int hash
= 0;
3093 if (c
>= 0140) c
-= 40;
3094 hash
= ((hash
<<3) + (hash
>>28) + c
);
3096 return hash
& 07777777777;
3100 map_obarray (obarray
, fn
, arg
)
3101 Lisp_Object obarray
;
3102 void (*fn
) P_ ((Lisp_Object
, Lisp_Object
));
3106 register Lisp_Object tail
;
3107 CHECK_VECTOR (obarray
, 1);
3108 for (i
= XVECTOR (obarray
)->size
- 1; i
>= 0; i
--)
3110 tail
= XVECTOR (obarray
)->contents
[i
];
3115 if (XSYMBOL (tail
)->next
== 0)
3117 XSETSYMBOL (tail
, XSYMBOL (tail
)->next
);
3123 mapatoms_1 (sym
, function
)
3124 Lisp_Object sym
, function
;
3126 call1 (function
, sym
);
3129 DEFUN ("mapatoms", Fmapatoms
, Smapatoms
, 1, 2, 0,
3130 "Call FUNCTION on every symbol in OBARRAY.\n\
3131 OBARRAY defaults to the value of `obarray'.")
3133 Lisp_Object function
, obarray
;
3135 if (NILP (obarray
)) obarray
= Vobarray
;
3136 obarray
= check_obarray (obarray
);
3138 map_obarray (obarray
, mapatoms_1
, function
);
3142 #define OBARRAY_SIZE 1511
3147 Lisp_Object oblength
;
3151 XSETFASTINT (oblength
, OBARRAY_SIZE
);
3153 Qnil
= Fmake_symbol (make_pure_string ("nil", 3, 3, 0));
3154 Vobarray
= Fmake_vector (oblength
, make_number (0));
3155 initial_obarray
= Vobarray
;
3156 staticpro (&initial_obarray
);
3157 /* Intern nil in the obarray */
3158 XSYMBOL (Qnil
)->interned
= SYMBOL_INTERNED_IN_INITIAL_OBARRAY
;
3159 XSYMBOL (Qnil
)->constant
= 1;
3161 /* These locals are to kludge around a pyramid compiler bug. */
3162 hash
= hash_string ("nil", 3);
3163 /* Separate statement here to avoid VAXC bug. */
3164 hash
%= OBARRAY_SIZE
;
3165 tem
= &XVECTOR (Vobarray
)->contents
[hash
];
3168 Qunbound
= Fmake_symbol (make_pure_string ("unbound", 7, 7, 0));
3169 XSYMBOL (Qnil
)->function
= Qunbound
;
3170 XSYMBOL (Qunbound
)->value
= Qunbound
;
3171 XSYMBOL (Qunbound
)->function
= Qunbound
;
3174 XSYMBOL (Qnil
)->value
= Qnil
;
3175 XSYMBOL (Qnil
)->plist
= Qnil
;
3176 XSYMBOL (Qt
)->value
= Qt
;
3177 XSYMBOL (Qt
)->constant
= 1;
3179 /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */
3182 Qvariable_documentation
= intern ("variable-documentation");
3183 staticpro (&Qvariable_documentation
);
3185 read_buffer_size
= 100 + MAX_MULTIBYTE_LENGTH
;
3186 read_buffer
= (char *) xmalloc (read_buffer_size
);
3191 struct Lisp_Subr
*sname
;
3194 sym
= intern (sname
->symbol_name
);
3195 XSETSUBR (XSYMBOL (sym
)->function
, sname
);
3198 #ifdef NOTDEF /* use fset in subr.el now */
3200 defalias (sname
, string
)
3201 struct Lisp_Subr
*sname
;
3205 sym
= intern (string
);
3206 XSETSUBR (XSYMBOL (sym
)->function
, sname
);
3210 /* Define an "integer variable"; a symbol whose value is forwarded
3211 to a C variable of type int. Sample call: */
3212 /* DEFVAR_INT ("indent-tabs-mode", &indent_tabs_mode, "Documentation"); */
3214 defvar_int (namestring
, address
)
3218 Lisp_Object sym
, val
;
3219 sym
= intern (namestring
);
3220 val
= allocate_misc ();
3221 XMISCTYPE (val
) = Lisp_Misc_Intfwd
;
3222 XINTFWD (val
)->intvar
= address
;
3223 SET_SYMBOL_VALUE (sym
, val
);
3226 /* Similar but define a variable whose value is T if address contains 1,
3227 NIL if address contains 0 */
3229 defvar_bool (namestring
, address
)
3233 Lisp_Object sym
, val
;
3234 sym
= intern (namestring
);
3235 val
= allocate_misc ();
3236 XMISCTYPE (val
) = Lisp_Misc_Boolfwd
;
3237 XBOOLFWD (val
)->boolvar
= address
;
3238 SET_SYMBOL_VALUE (sym
, val
);
3239 Vbyte_boolean_vars
= Fcons (sym
, Vbyte_boolean_vars
);
3242 /* Similar but define a variable whose value is the Lisp Object stored
3243 at address. Two versions: with and without gc-marking of the C
3244 variable. The nopro version is used when that variable will be
3245 gc-marked for some other reason, since marking the same slot twice
3246 can cause trouble with strings. */
3248 defvar_lisp_nopro (namestring
, address
)
3250 Lisp_Object
*address
;
3252 Lisp_Object sym
, val
;
3253 sym
= intern (namestring
);
3254 val
= allocate_misc ();
3255 XMISCTYPE (val
) = Lisp_Misc_Objfwd
;
3256 XOBJFWD (val
)->objvar
= address
;
3257 SET_SYMBOL_VALUE (sym
, val
);
3261 defvar_lisp (namestring
, address
)
3263 Lisp_Object
*address
;
3265 defvar_lisp_nopro (namestring
, address
);
3266 staticpro (address
);
3269 /* Similar but define a variable whose value is the Lisp Object stored in
3270 the current buffer. address is the address of the slot in the buffer
3271 that is current now. */
3274 defvar_per_buffer (namestring
, address
, type
, doc
)
3276 Lisp_Object
*address
;
3280 Lisp_Object sym
, val
;
3282 extern struct buffer buffer_local_symbols
;
3284 sym
= intern (namestring
);
3285 val
= allocate_misc ();
3286 offset
= (char *)address
- (char *)current_buffer
;
3288 XMISCTYPE (val
) = Lisp_Misc_Buffer_Objfwd
;
3289 XBUFFER_OBJFWD (val
)->offset
= offset
;
3290 SET_SYMBOL_VALUE (sym
, val
);
3291 PER_BUFFER_SYMBOL (offset
) = sym
;
3292 PER_BUFFER_TYPE (offset
) = type
;
3294 if (PER_BUFFER_IDX (offset
) == 0)
3295 /* Did a DEFVAR_PER_BUFFER without initializing the corresponding
3296 slot of buffer_local_flags */
3301 /* Similar but define a variable whose value is the Lisp Object stored
3302 at a particular offset in the current kboard object. */
3305 defvar_kboard (namestring
, offset
)
3309 Lisp_Object sym
, val
;
3310 sym
= intern (namestring
);
3311 val
= allocate_misc ();
3312 XMISCTYPE (val
) = Lisp_Misc_Kboard_Objfwd
;
3313 XKBOARD_OBJFWD (val
)->offset
= offset
;
3314 SET_SYMBOL_VALUE (sym
, val
);
3317 /* Record the value of load-path used at the start of dumping
3318 so we can see if the site changed it later during dumping. */
3319 static Lisp_Object dump_path
;
3325 int turn_off_warning
= 0;
3327 /* Compute the default load-path. */
3329 normal
= PATH_LOADSEARCH
;
3330 Vload_path
= decode_env_path (0, normal
);
3332 if (NILP (Vpurify_flag
))
3333 normal
= PATH_LOADSEARCH
;
3335 normal
= PATH_DUMPLOADSEARCH
;
3337 /* In a dumped Emacs, we normally have to reset the value of
3338 Vload_path from PATH_LOADSEARCH, since the value that was dumped
3339 uses ../lisp, instead of the path of the installed elisp
3340 libraries. However, if it appears that Vload_path was changed
3341 from the default before dumping, don't override that value. */
3344 if (! NILP (Fequal (dump_path
, Vload_path
)))
3346 Vload_path
= decode_env_path (0, normal
);
3347 if (!NILP (Vinstallation_directory
))
3349 /* Add to the path the lisp subdir of the
3350 installation dir, if it exists. */
3351 Lisp_Object tem
, tem1
;
3352 tem
= Fexpand_file_name (build_string ("lisp"),
3353 Vinstallation_directory
);
3354 tem1
= Ffile_exists_p (tem
);
3357 if (NILP (Fmember (tem
, Vload_path
)))
3359 turn_off_warning
= 1;
3360 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
3364 /* That dir doesn't exist, so add the build-time
3365 Lisp dirs instead. */
3366 Vload_path
= nconc2 (Vload_path
, dump_path
);
3368 /* Add leim under the installation dir, if it exists. */
3369 tem
= Fexpand_file_name (build_string ("leim"),
3370 Vinstallation_directory
);
3371 tem1
= Ffile_exists_p (tem
);
3374 if (NILP (Fmember (tem
, Vload_path
)))
3375 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
3378 /* Add site-list under the installation dir, if it exists. */
3379 tem
= Fexpand_file_name (build_string ("site-lisp"),
3380 Vinstallation_directory
);
3381 tem1
= Ffile_exists_p (tem
);
3384 if (NILP (Fmember (tem
, Vload_path
)))
3385 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
3388 /* If Emacs was not built in the source directory,
3389 and it is run from where it was built, add to load-path
3390 the lisp, leim and site-lisp dirs under that directory. */
3392 if (NILP (Fequal (Vinstallation_directory
, Vsource_directory
)))
3396 tem
= Fexpand_file_name (build_string ("src/Makefile"),
3397 Vinstallation_directory
);
3398 tem1
= Ffile_exists_p (tem
);
3400 /* Don't be fooled if they moved the entire source tree
3401 AFTER dumping Emacs. If the build directory is indeed
3402 different from the source dir, src/Makefile.in and
3403 src/Makefile will not be found together. */
3404 tem
= Fexpand_file_name (build_string ("src/Makefile.in"),
3405 Vinstallation_directory
);
3406 tem2
= Ffile_exists_p (tem
);
3407 if (!NILP (tem1
) && NILP (tem2
))
3409 tem
= Fexpand_file_name (build_string ("lisp"),
3412 if (NILP (Fmember (tem
, Vload_path
)))
3413 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
3415 tem
= Fexpand_file_name (build_string ("leim"),
3418 if (NILP (Fmember (tem
, Vload_path
)))
3419 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
3421 tem
= Fexpand_file_name (build_string ("site-lisp"),
3424 if (NILP (Fmember (tem
, Vload_path
)))
3425 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
3433 /* NORMAL refers to the lisp dir in the source directory. */
3434 /* We used to add ../lisp at the front here, but
3435 that caused trouble because it was copied from dump_path
3436 into Vload_path, aboe, when Vinstallation_directory was non-nil.
3437 It should be unnecessary. */
3438 Vload_path
= decode_env_path (0, normal
);
3439 dump_path
= Vload_path
;
3444 /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is
3445 almost never correct, thereby causing a warning to be printed out that
3446 confuses users. Since PATH_LOADSEARCH is always overridden by the
3447 EMACSLOADPATH environment variable below, disable the warning on NT. */
3449 /* Warn if dirs in the *standard* path don't exist. */
3450 if (!turn_off_warning
)
3452 Lisp_Object path_tail
;
3454 for (path_tail
= Vload_path
;
3456 path_tail
= XCDR (path_tail
))
3458 Lisp_Object dirfile
;
3459 dirfile
= Fcar (path_tail
);
3460 if (STRINGP (dirfile
))
3462 dirfile
= Fdirectory_file_name (dirfile
);
3463 if (access (XSTRING (dirfile
)->data
, 0) < 0)
3464 dir_warning ("Warning: Lisp directory `%s' does not exist.\n",
3469 #endif /* WINDOWSNT */
3471 /* If the EMACSLOADPATH environment variable is set, use its value.
3472 This doesn't apply if we're dumping. */
3474 if (NILP (Vpurify_flag
)
3475 && egetenv ("EMACSLOADPATH"))
3477 Vload_path
= decode_env_path ("EMACSLOADPATH", normal
);
3481 load_in_progress
= 0;
3482 Vload_file_name
= Qnil
;
3484 load_descriptor_list
= Qnil
;
3486 Vstandard_input
= Qt
;
3487 Vloads_in_progress
= Qnil
;
3490 /* Print a warning, using format string FORMAT, that directory DIRNAME
3491 does not exist. Print it on stderr and put it in *Message*. */
3494 dir_warning (format
, dirname
)
3496 Lisp_Object dirname
;
3499 = (char *) alloca (XSTRING (dirname
)->size
+ strlen (format
) + 5);
3501 fprintf (stderr
, format
, XSTRING (dirname
)->data
);
3502 sprintf (buffer
, format
, XSTRING (dirname
)->data
);
3503 /* Don't log the warning before we've initialized!! */
3505 message_dolog (buffer
, strlen (buffer
), 0, STRING_MULTIBYTE (dirname
));
3512 defsubr (&Sread_from_string
);
3514 defsubr (&Sintern_soft
);
3515 defsubr (&Sunintern
);
3517 defsubr (&Seval_buffer
);
3518 defsubr (&Seval_region
);
3519 defsubr (&Sread_char
);
3520 defsubr (&Sread_char_exclusive
);
3521 defsubr (&Sread_event
);
3522 defsubr (&Sget_file_char
);
3523 defsubr (&Smapatoms
);
3525 DEFVAR_LISP ("obarray", &Vobarray
,
3526 "Symbol table for use by `intern' and `read'.\n\
3527 It is a vector whose length ought to be prime for best results.\n\
3528 The vector's contents don't make sense if examined from Lisp programs;\n\
3529 to find all the symbols in an obarray, use `mapatoms'.");
3531 DEFVAR_LISP ("values", &Vvalues
,
3532 "List of values of all expressions which were read, evaluated and printed.\n\
3533 Order is reverse chronological.");
3535 DEFVAR_LISP ("standard-input", &Vstandard_input
,
3536 "Stream for read to get input from.\n\
3537 See documentation of `read' for possible values.");
3538 Vstandard_input
= Qt
;
3540 DEFVAR_LISP ("load-path", &Vload_path
,
3541 "*List of directories to search for files to load.\n\
3542 Each element is a string (directory name) or nil (try default directory).\n\
3543 Initialized based on EMACSLOADPATH environment variable, if any,\n\
3544 otherwise to default specified by file `epaths.h' when Emacs was built.");
3546 DEFVAR_LISP ("load-suffixes", &Vload_suffixes
,
3547 "*List of suffixes to try for files to load.
3548 This list should not include the empty string.");
3549 Vload_suffixes
= Fcons (build_string (".elc"),
3550 Fcons (build_string (".el"), Qnil
));
3551 default_suffixes
= Fcons (empty_string
, Qnil
);
3552 staticpro (&default_suffixes
);
3554 DEFVAR_BOOL ("load-in-progress", &load_in_progress
,
3555 "Non-nil iff inside of `load'.");
3557 DEFVAR_LISP ("after-load-alist", &Vafter_load_alist
,
3558 "An alist of expressions to be evalled when particular files are loaded.\n\
3559 Each element looks like (FILENAME FORMS...).\n\
3560 When `load' is run and the file-name argument is FILENAME,\n\
3561 the FORMS in the corresponding element are executed at the end of loading.\n\n\
3562 FILENAME must match exactly! Normally FILENAME is the name of a library,\n\
3563 with no directory specified, since that is how `load' is normally called.\n\
3564 An error in FORMS does not undo the load,\n\
3565 but does prevent execution of the rest of the FORMS.");
3566 Vafter_load_alist
= Qnil
;
3568 DEFVAR_LISP ("load-history", &Vload_history
,
3569 "Alist mapping source file names to symbols and features.\n\
3570 Each alist element is a list that starts with a file name,\n\
3571 except for one element (optional) that starts with nil and describes\n\
3572 definitions evaluated from buffers not visiting files.\n\
3573 The remaining elements of each list are symbols defined as functions\n\
3574 or variables, and cons cells `(provide . FEATURE)', `(require . FEATURE)',\n\
3575 and `(autoload . SYMBOL)'.");
3576 Vload_history
= Qnil
;
3578 DEFVAR_LISP ("load-file-name", &Vload_file_name
,
3579 "Full name of file being loaded by `load'.");
3580 Vload_file_name
= Qnil
;
3582 DEFVAR_LISP ("user-init-file", &Vuser_init_file
,
3583 "File name, including directory, of user's initialization file.\n\
3584 If the file loaded had extension `.elc' and there was a corresponding `.el'\n\
3585 file, this variable contains the name of the .el file, suitable for use\n\
3586 by functions like `custom-save-all' which edit the init file.");
3587 Vuser_init_file
= Qnil
;
3589 DEFVAR_LISP ("current-load-list", &Vcurrent_load_list
,
3590 "Used for internal purposes by `load'.");
3591 Vcurrent_load_list
= Qnil
;
3593 DEFVAR_LISP ("load-read-function", &Vload_read_function
,
3594 "Function used by `load' and `eval-region' for reading expressions.\n\
3595 The default is nil, which means use the function `read'.");
3596 Vload_read_function
= Qnil
;
3598 DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function
,
3599 "Function called in `load' for loading an Emacs lisp source file.\n\
3600 This function is for doing code conversion before reading the source file.\n\
3601 If nil, loading is done without any code conversion.\n\
3602 Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where\n\
3603 FULLNAME is the full name of FILE.\n\
3604 See `load' for the meaning of the remaining arguments.");
3605 Vload_source_file_function
= Qnil
;
3607 DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings
,
3608 "Non-nil means `load' should force-load all dynamic doc strings.\n\
3609 This is useful when the file being loaded is a temporary copy.");
3610 load_force_doc_strings
= 0;
3612 DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte
,
3613 "Non-nil means `read' converts strings to unibyte whenever possible.\n\
3614 This is normally bound by `load' and `eval-buffer' to control `read',\n\
3615 and is not meant for users to change.");
3616 load_convert_to_unibyte
= 0;
3618 DEFVAR_LISP ("source-directory", &Vsource_directory
,
3619 "Directory in which Emacs sources were found when Emacs was built.\n\
3620 You cannot count on them to still be there!");
3622 = Fexpand_file_name (build_string ("../"),
3623 Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH
)));
3625 DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list
,
3626 "List of files that were preloaded (when dumping Emacs).");
3627 Vpreloaded_file_list
= Qnil
;
3629 DEFVAR_LISP ("byte-boolean-vars", &Vbyte_boolean_vars
,
3630 "List of all DEFVAR_BOOL variables, used by the byte code optimizer.");
3631 Vbyte_boolean_vars
= Qnil
;
3633 DEFVAR_BOOL ("load-dangerous-libraries", &load_dangerous_libraries
,
3634 "Non-nil means load dangerous compiled Lisp files.\n\
3635 Some versions of XEmacs use different byte codes than Emacs. These\n\
3636 incompatible byte codes can make Emacs crash when it tries to execute\n\
3638 load_dangerous_libraries
= 0;
3640 DEFVAR_LISP ("bytecomp-version-regexp", &Vbytecomp_version_regexp
,
3641 "Regular expression matching safe to load compiled Lisp files.\n\
3642 When Emacs loads a compiled Lisp file, it reads the first 512 bytes\n\
3643 from the file, and matches them against this regular expression.\n\
3644 When the regular expression matches, the file is considered to be safe\n\
3645 to load. See also `load-dangerous-libraries'.");
3646 Vbytecomp_version_regexp
3647 = build_string ("^;;;.\\(in Emacs version\\|bytecomp version FSF\\)");
3649 DEFVAR_LISP ("recursive-load-depth-limit", &Vrecursive_load_depth_limit
,
3650 "Limit for depth of recursive loads.\n\
3651 Value should be either an integer > 0 specifying the limit, or nil for\n\
3653 Vrecursive_load_depth_limit
= make_number (10);
3655 /* Vsource_directory was initialized in init_lread. */
3657 load_descriptor_list
= Qnil
;
3658 staticpro (&load_descriptor_list
);
3660 Qcurrent_load_list
= intern ("current-load-list");
3661 staticpro (&Qcurrent_load_list
);
3663 Qstandard_input
= intern ("standard-input");
3664 staticpro (&Qstandard_input
);
3666 Qread_char
= intern ("read-char");
3667 staticpro (&Qread_char
);
3669 Qget_file_char
= intern ("get-file-char");
3670 staticpro (&Qget_file_char
);
3672 Qbackquote
= intern ("`");
3673 staticpro (&Qbackquote
);
3674 Qcomma
= intern (",");
3675 staticpro (&Qcomma
);
3676 Qcomma_at
= intern (",@");
3677 staticpro (&Qcomma_at
);
3678 Qcomma_dot
= intern (",.");
3679 staticpro (&Qcomma_dot
);
3681 Qinhibit_file_name_operation
= intern ("inhibit-file-name-operation");
3682 staticpro (&Qinhibit_file_name_operation
);
3684 Qascii_character
= intern ("ascii-character");
3685 staticpro (&Qascii_character
);
3687 Qfunction
= intern ("function");
3688 staticpro (&Qfunction
);
3690 Qload
= intern ("load");
3693 Qload_file_name
= intern ("load-file-name");
3694 staticpro (&Qload_file_name
);
3696 staticpro (&dump_path
);
3698 staticpro (&read_objects
);
3699 read_objects
= Qnil
;
3700 staticpro (&seen_list
);
3702 Vloads_in_progress
= Qnil
;
3703 staticpro (&Vloads_in_progress
);