1 /* Lisp parsing and input streams.
2 Copyright (C) 1985, 86, 87, 88, 89, 93, 94, 95, 1997
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>
37 #include "termhooks.h"
41 #include <sys/inode.h>
46 #include <unistd.h> /* to get X_OK */
55 #ifdef LISP_FLOAT_TYPE
61 #endif /* LISP_FLOAT_TYPE */
65 #endif /* HAVE_SETLOCALE */
73 Lisp_Object Qread_char
, Qget_file_char
, Qstandard_input
, Qcurrent_load_list
;
74 Lisp_Object Qvariable_documentation
, Vvalues
, Vstandard_input
, Vafter_load_alist
;
75 Lisp_Object Qascii_character
, Qload
, Qload_file_name
;
76 Lisp_Object Qbackquote
, Qcomma
, Qcomma_at
, Qcomma_dot
, Qfunction
;
77 Lisp_Object Qinhibit_file_name_operation
;
79 extern Lisp_Object Qevent_symbol_element_mask
;
80 extern Lisp_Object Qfile_exists_p
;
82 /* non-zero if inside `load' */
85 /* Directory in which the sources were found. */
86 Lisp_Object Vsource_directory
;
88 /* Search path for files to be loaded. */
89 Lisp_Object Vload_path
;
91 /* This is the user-visible association list that maps features to
92 lists of defs in their load files. */
93 Lisp_Object Vload_history
;
95 /* This is used to build the load history. */
96 Lisp_Object Vcurrent_load_list
;
98 /* List of files that were preloaded. */
99 Lisp_Object Vpreloaded_file_list
;
101 /* Name of file actually being read by `load'. */
102 Lisp_Object Vload_file_name
;
104 /* Function to use for reading, in `load' and friends. */
105 Lisp_Object Vload_read_function
;
107 /* The association list of objects read with the #n=object form.
108 Each member of the list has the form (n . object), and is used to
109 look up the object for the corresponding #n# construct.
110 It must be set to nil before all top-level calls to read0. */
111 Lisp_Object read_objects
;
113 /* Nonzero means load should forcibly load all dynamic doc strings. */
114 static int load_force_doc_strings
;
116 /* Function to use for loading an Emacs lisp source file (not
117 compiled) instead of readevalloop. */
118 Lisp_Object Vload_source_file_function
;
120 /* List of descriptors now open for Fload. */
121 static Lisp_Object load_descriptor_list
;
123 /* File for get_file_char to read from. Use by load. */
124 static FILE *instream
;
126 /* When nonzero, read conses in pure space */
127 static int read_pure
;
129 /* For use within read-from-string (this reader is non-reentrant!!) */
130 static int read_from_string_index
;
131 static int read_from_string_limit
;
133 /* This contains the last string skipped with #@. */
134 static char *saved_doc_string
;
135 /* Length of buffer allocated in saved_doc_string. */
136 static int saved_doc_string_size
;
137 /* Length of actual data in saved_doc_string. */
138 static int saved_doc_string_length
;
139 /* This is the file position that string came from. */
140 static int saved_doc_string_position
;
142 /* Nonzero means inside a new-style backquote
143 with no surrounding parentheses.
144 Fread initializes this to zero, so we need not specbind it
145 or worry about what happens to it when there is an error. */
146 static int new_backquote_flag
;
148 /* Handle unreading and rereading of characters.
149 Write READCHAR to read a character,
150 UNREAD(c) to unread c to be read again.
152 These macros actually read/unread a byte code, multibyte characters
153 are not handled here. The caller should manage them if necessary.
156 #define READCHAR readchar (readcharfun)
157 #define UNREAD(c) unreadchar (readcharfun, c)
160 readchar (readcharfun
)
161 Lisp_Object readcharfun
;
164 register struct buffer
*inbuffer
;
165 register int c
, mpos
;
167 if (BUFFERP (readcharfun
))
169 inbuffer
= XBUFFER (readcharfun
);
171 if (BUF_PT (inbuffer
) >= BUF_ZV (inbuffer
))
173 c
= *(unsigned char *) BUF_CHAR_ADDRESS (inbuffer
, BUF_PT (inbuffer
));
174 SET_BUF_PT (inbuffer
, BUF_PT (inbuffer
) + 1);
178 if (MARKERP (readcharfun
))
180 inbuffer
= XMARKER (readcharfun
)->buffer
;
182 mpos
= marker_position (readcharfun
);
184 if (mpos
> BUF_ZV (inbuffer
) - 1)
186 c
= *(unsigned char *) BUF_CHAR_ADDRESS (inbuffer
, mpos
);
187 if (mpos
!= BUF_GPT (inbuffer
))
188 XMARKER (readcharfun
)->bufpos
++;
190 Fset_marker (readcharfun
, make_number (mpos
+ 1),
191 Fmarker_buffer (readcharfun
));
194 if (EQ (readcharfun
, Qget_file_char
))
198 /* Interrupted reads have been observed while reading over the network */
199 while (c
== EOF
&& ferror (instream
) && errno
== EINTR
)
208 if (STRINGP (readcharfun
))
211 /* This used to be return of a conditional expression,
212 but that truncated -1 to a char on VMS. */
213 if (read_from_string_index
< read_from_string_limit
)
214 c
= XSTRING (readcharfun
)->data
[read_from_string_index
++];
220 tem
= call0 (readcharfun
);
227 /* Unread the character C in the way appropriate for the stream READCHARFUN.
228 If the stream is a user function, call it with the char as argument. */
231 unreadchar (readcharfun
, c
)
232 Lisp_Object readcharfun
;
236 /* Don't back up the pointer if we're unreading the end-of-input mark,
237 since readchar didn't advance it when we read it. */
239 else if (BUFFERP (readcharfun
))
241 if (XBUFFER (readcharfun
) == current_buffer
)
244 SET_BUF_PT (XBUFFER (readcharfun
), BUF_PT (XBUFFER (readcharfun
)) - 1);
246 else if (MARKERP (readcharfun
))
247 XMARKER (readcharfun
)->bufpos
--;
248 else if (STRINGP (readcharfun
))
249 read_from_string_index
--;
250 else if (EQ (readcharfun
, Qget_file_char
))
251 ungetc (c
, instream
);
253 call1 (readcharfun
, make_number (c
));
256 static Lisp_Object
read0 (), read1 (), read_list (), read_vector ();
258 /* get a character from the tty */
260 extern Lisp_Object
read_char ();
262 /* Read input events until we get one that's acceptable for our purposes.
264 If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed
265 until we get a character we like, and then stuffed into
268 If ASCII_REQUIRED is non-zero, we check function key events to see
269 if the unmodified version of the symbol has a Qascii_character
270 property, and use that character, if present.
272 If ERROR_NONASCII is non-zero, we signal an error if the input we
273 get isn't an ASCII character with modifiers. If it's zero but
274 ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII
278 read_filtered_event (no_switch_frame
, ascii_required
, error_nonascii
)
279 int no_switch_frame
, ascii_required
, error_nonascii
;
282 return make_number (getchar ());
284 register Lisp_Object val
, delayed_switch_frame
;
286 delayed_switch_frame
= Qnil
;
288 /* Read until we get an acceptable event. */
290 val
= read_char (0, 0, 0, Qnil
, 0);
295 /* switch-frame events are put off until after the next ASCII
296 character. This is better than signaling an error just because
297 the last characters were typed to a separate minibuffer frame,
298 for example. Eventually, some code which can deal with
299 switch-frame events will read it and process it. */
301 && EVENT_HAS_PARAMETERS (val
)
302 && EQ (EVENT_HEAD (val
), Qswitch_frame
))
304 delayed_switch_frame
= val
;
310 /* Convert certain symbols to their ASCII equivalents. */
313 Lisp_Object tem
, tem1
, tem2
;
314 tem
= Fget (val
, Qevent_symbol_element_mask
);
317 tem1
= Fget (Fcar (tem
), Qascii_character
);
318 /* Merge this symbol's modifier bits
319 with the ASCII equivalent of its basic code. */
321 XSETFASTINT (val
, XINT (tem1
) | XINT (Fcar (Fcdr (tem
))));
325 /* If we don't have a character now, deal with it appropriately. */
330 Vunread_command_events
= Fcons (val
, Qnil
);
331 error ("Non-character input-event");
338 if (! NILP (delayed_switch_frame
))
339 unread_switch_frame
= delayed_switch_frame
;
345 DEFUN ("read-char", Fread_char
, Sread_char
, 0, 0, 0,
346 "Read a character from the command input (keyboard or macro).\n\
347 It is returned as a number.\n\
348 If the user generates an event which is not a character (i.e. a mouse\n\
349 click or function key event), `read-char' signals an error. As an\n\
350 exception, switch-frame events are put off until non-ASCII events can\n\
352 If you want to read non-character events, or ignore them, call\n\
353 `read-event' or `read-char-exclusive' instead.")
356 return read_filtered_event (1, 1, 1);
359 DEFUN ("read-event", Fread_event
, Sread_event
, 0, 0, 0,
360 "Read an event object from the input stream.")
363 return read_filtered_event (0, 0, 0);
366 DEFUN ("read-char-exclusive", Fread_char_exclusive
, Sread_char_exclusive
, 0, 0, 0,
367 "Read a character from the command input (keyboard or macro).\n\
368 It is returned as a number. Non-character events are ignored.")
371 return read_filtered_event (1, 1, 0);
374 DEFUN ("get-file-char", Fget_file_char
, Sget_file_char
, 0, 0, 0,
375 "Don't use this yourself.")
378 register Lisp_Object val
;
379 XSETINT (val
, getc (instream
));
383 static void readevalloop ();
384 static Lisp_Object
load_unwind ();
385 static Lisp_Object
load_descriptor_unwind ();
387 DEFUN ("load", Fload
, Sload
, 1, 5, 0,
388 "Execute a file of Lisp code named FILE.\n\
389 First try FILE with `.elc' appended, then try with `.el',\n\
390 then try FILE unmodified.\n\
391 This function searches the directories in `load-path'.\n\
392 If optional second arg NOERROR is non-nil,\n\
393 report no error if FILE doesn't exist.\n\
394 Print messages at start and end of loading unless\n\
395 optional third arg NOMESSAGE is non-nil.\n\
396 If optional fourth arg NOSUFFIX is non-nil, don't try adding\n\
397 suffixes `.elc' or `.el' to the specified name FILE.\n\
398 If optional fifth arg MUST-SUFFIX is non-nil, insist on\n\
399 the suffix `.elc' or `.el'; don't accept just FILE unless\n\
400 it ends in one of those suffixes or includes a directory name.\n\
401 Return t if file exists.")
402 (file
, noerror
, nomessage
, nosuffix
, must_suffix
)
403 Lisp_Object file
, noerror
, nomessage
, nosuffix
, must_suffix
;
405 register FILE *stream
;
406 register int fd
= -1;
407 register Lisp_Object lispstream
;
408 int count
= specpdl_ptr
- specpdl
;
412 /* 1 means we printed the ".el is newer" message. */
414 /* 1 means we are loading a compiled file. */
418 char *dosmode
= "rt";
421 CHECK_STRING (file
, 0);
423 /* If file name is magic, call the handler. */
424 handler
= Ffind_file_name_handler (file
, Qload
);
426 return call5 (handler
, Qload
, file
, noerror
, nomessage
, nosuffix
);
428 /* Do this after the handler to avoid
429 the need to gcpro noerror, nomessage and nosuffix.
430 (Below here, we care only whether they are nil or not.) */
431 file
= Fsubstitute_in_file_name (file
);
433 /* Avoid weird lossage with null string as arg,
434 since it would try to load a directory as a Lisp file */
435 if (XSTRING (file
)->size
> 0)
437 int size
= XSTRING (file
)->size
;
441 if (! NILP (must_suffix
))
443 /* Don't insist on adding a suffix if FILE already ends with one. */
445 && !strcmp (XSTRING (file
)->data
+ size
- 3, ".el"))
448 && !strcmp (XSTRING (file
)->data
+ size
- 4, ".elc"))
450 /* Don't insist on adding a suffix
451 if the argument includes a directory name. */
452 else if (! NILP (Ffile_name_directory (file
)))
456 fd
= openp (Vload_path
, file
,
457 (!NILP (nosuffix
) ? ""
458 : ! NILP (must_suffix
) ? ".elc:.el"
468 Fsignal (Qfile_error
, Fcons (build_string ("Cannot open load file"),
469 Fcons (file
, Qnil
)));
474 /* If FD is 0, that means openp found a remote file. */
477 handler
= Ffind_file_name_handler (found
, Qload
);
478 return call5 (handler
, Qload
, found
, noerror
, nomessage
, Qt
);
481 if (!bcmp (&(XSTRING (found
)->data
[XSTRING (found
)->size
- 4]),
492 stat ((char *)XSTRING (found
)->data
, &s1
);
493 XSTRING (found
)->data
[XSTRING (found
)->size
- 1] = 0;
494 result
= stat ((char *)XSTRING (found
)->data
, &s2
);
495 if (result
>= 0 && (unsigned) s1
.st_mtime
< (unsigned) s2
.st_mtime
)
497 /* Make the progress messages mention that source is newer. */
500 /* If we won't print another message, mention this anyway. */
501 if (! NILP (nomessage
))
502 message ("Source file `%s' newer than byte-compiled file",
503 XSTRING (found
)->data
);
505 XSTRING (found
)->data
[XSTRING (found
)->size
- 1] = 'c';
509 /* We are loading a source file (*.el). */
510 if (!NILP (Vload_source_file_function
))
513 return call4 (Vload_source_file_function
, found
, file
,
514 NILP (noerror
) ? Qnil
: Qt
,
515 NILP (nomessage
) ? Qnil
: Qt
);
521 stream
= fopen ((char *) XSTRING (found
)->data
, dosmode
);
522 #else /* not DOS_NT */
523 stream
= fdopen (fd
, "r");
524 #endif /* not DOS_NT */
528 error ("Failure to create stdio stream for %s", XSTRING (file
)->data
);
531 if (! NILP (Vpurify_flag
))
532 Vpreloaded_file_list
= Fcons (file
, Vpreloaded_file_list
);
534 if (NILP (nomessage
))
537 message ("Loading %s (compiled; note, source file is newer)...",
538 XSTRING (file
)->data
);
540 message ("Loading %s (compiled)...", XSTRING (file
)->data
);
542 message ("Loading %s...", XSTRING (file
)->data
);
546 lispstream
= Fcons (Qnil
, Qnil
);
547 XSETFASTINT (XCONS (lispstream
)->car
, (EMACS_UINT
)stream
>> 16);
548 XSETFASTINT (XCONS (lispstream
)->cdr
, (EMACS_UINT
)stream
& 0xffff);
549 record_unwind_protect (load_unwind
, lispstream
);
550 record_unwind_protect (load_descriptor_unwind
, load_descriptor_list
);
551 specbind (Qload_file_name
, found
);
552 specbind (Qinhibit_file_name_operation
, Qnil
);
554 = Fcons (make_number (fileno (stream
)), load_descriptor_list
);
556 readevalloop (Qget_file_char
, stream
, file
, Feval
, 0);
557 unbind_to (count
, Qnil
);
559 /* Run any load-hooks for this file. */
560 temp
= Fassoc (file
, Vafter_load_alist
);
562 Fprogn (Fcdr (temp
));
565 if (saved_doc_string
)
566 free (saved_doc_string
);
567 saved_doc_string
= 0;
568 saved_doc_string_size
= 0;
570 if (!noninteractive
&& NILP (nomessage
))
573 message ("Loading %s (compiled; note, source file is newer)...done",
574 XSTRING (file
)->data
);
576 message ("Loading %s (compiled)...done", XSTRING (file
)->data
);
578 message ("Loading %s...done", XSTRING (file
)->data
);
584 load_unwind (stream
) /* used as unwind-protect function in load */
587 fclose ((FILE *) (XFASTINT (XCONS (stream
)->car
) << 16
588 | XFASTINT (XCONS (stream
)->cdr
)));
589 if (--load_in_progress
< 0) load_in_progress
= 0;
594 load_descriptor_unwind (oldlist
)
597 load_descriptor_list
= oldlist
;
601 /* Close all descriptors in use for Floads.
602 This is used when starting a subprocess. */
609 for (tail
= load_descriptor_list
; !NILP (tail
); tail
= XCONS (tail
)->cdr
)
610 close (XFASTINT (XCONS (tail
)->car
));
615 complete_filename_p (pathname
)
616 Lisp_Object pathname
;
618 register unsigned char *s
= XSTRING (pathname
)->data
;
619 return (IS_DIRECTORY_SEP (s
[0])
620 || (XSTRING (pathname
)->size
> 2
621 && IS_DEVICE_SEP (s
[1]) && IS_DIRECTORY_SEP (s
[2]))
631 /* Search for a file whose name is STR, looking in directories
632 in the Lisp list PATH, and trying suffixes from SUFFIX.
633 SUFFIX is a string containing possible suffixes separated by colons.
634 On success, returns a file descriptor. On failure, returns -1.
636 EXEC_ONLY nonzero means don't open the files,
637 just look for one that is executable. In this case,
638 returns 1 on success.
640 If STOREPTR is nonzero, it points to a slot where the name of
641 the file actually found should be stored as a Lisp string.
642 nil is stored there on failure.
644 If the file we find is remote, return 0
645 but store the found remote file name in *STOREPTR.
646 We do not check for remote files if EXEC_ONLY is nonzero. */
649 openp (path
, str
, suffix
, storeptr
, exec_only
)
650 Lisp_Object path
, str
;
652 Lisp_Object
*storeptr
;
658 register char *fn
= buf
;
661 Lisp_Object filename
;
669 if (complete_filename_p (str
))
672 for (; !NILP (path
); path
= Fcdr (path
))
676 filename
= Fexpand_file_name (str
, Fcar (path
));
677 if (!complete_filename_p (filename
))
678 /* If there are non-absolute elts in PATH (eg ".") */
679 /* Of course, this could conceivably lose if luser sets
680 default-directory to be something non-absolute... */
682 filename
= Fexpand_file_name (filename
, current_buffer
->directory
);
683 if (!complete_filename_p (filename
))
684 /* Give up on this path element! */
688 /* Calculate maximum size of any filename made from
689 this path element/specified file name and any possible suffix. */
690 want_size
= strlen (suffix
) + XSTRING (filename
)->size
+ 1;
691 if (fn_size
< want_size
)
692 fn
= (char *) alloca (fn_size
= 100 + want_size
);
696 /* Loop over suffixes. */
699 char *esuffix
= (char *) index (nsuffix
, ':');
700 int lsuffix
= esuffix
? esuffix
- nsuffix
: strlen (nsuffix
);
703 /* Concatenate path element/specified name with the suffix.
704 If the directory starts with /:, remove that. */
705 if (XSTRING (filename
)->size
> 2
706 && XSTRING (filename
)->data
[0] == '/'
707 && XSTRING (filename
)->data
[1] == ':')
709 strncpy (fn
, XSTRING (filename
)->data
+ 2,
710 XSTRING (filename
)->size
- 2);
711 fn
[XSTRING (filename
)->size
- 2] = 0;
715 strncpy (fn
, XSTRING (filename
)->data
, XSTRING (filename
)->size
);
716 fn
[XSTRING (filename
)->size
] = 0;
719 if (lsuffix
!= 0) /* Bug happens on CCI if lsuffix is 0. */
720 strncat (fn
, nsuffix
, lsuffix
);
722 /* Check that the file exists and is not a directory. */
726 handler
= Ffind_file_name_handler (filename
, Qfile_exists_p
);
727 if (! NILP (handler
) && ! exec_only
)
732 string
= build_string (fn
);
733 exists
= ! NILP (exec_only
? Ffile_executable_p (string
)
734 : Ffile_readable_p (string
));
736 && ! NILP (Ffile_directory_p (build_string (fn
))))
741 /* We succeeded; return this descriptor and filename. */
743 *storeptr
= build_string (fn
);
750 int exists
= (stat (fn
, &st
) >= 0
751 && (st
.st_mode
& S_IFMT
) != S_IFDIR
);
754 /* Check that we can access or open it. */
756 fd
= (access (fn
, X_OK
) == 0) ? 1 : -1;
758 fd
= open (fn
, O_RDONLY
, 0);
762 /* We succeeded; return this descriptor and filename. */
764 *storeptr
= build_string (fn
);
771 /* Advance to next suffix. */
774 nsuffix
+= lsuffix
+ 1;
785 /* Merge the list we've accumulated of globals from the current input source
786 into the load_history variable. The details depend on whether
787 the source has an associated file name or not. */
790 build_load_history (stream
, source
)
794 register Lisp_Object tail
, prev
, newelt
;
795 register Lisp_Object tem
, tem2
;
796 register int foundit
, loading
;
798 /* Don't bother recording anything for preloaded files. */
799 if (!NILP (Vpurify_flag
))
802 loading
= stream
|| !NARROWED
;
804 tail
= Vload_history
;
811 /* Find the feature's previous assoc list... */
812 if (!NILP (Fequal (source
, Fcar (tem
))))
816 /* If we're loading, remove it. */
820 Vload_history
= Fcdr (tail
);
822 Fsetcdr (prev
, Fcdr (tail
));
825 /* Otherwise, cons on new symbols that are not already members. */
828 tem2
= Vcurrent_load_list
;
832 newelt
= Fcar (tem2
);
834 if (NILP (Fmemq (newelt
, tem
)))
835 Fsetcar (tail
, Fcons (Fcar (tem
),
836 Fcons (newelt
, Fcdr (tem
))));
849 /* If we're loading, cons the new assoc onto the front of load-history,
850 the most-recently-loaded position. Also do this if we didn't find
851 an existing member for the current source. */
852 if (loading
|| !foundit
)
853 Vload_history
= Fcons (Fnreverse (Vcurrent_load_list
),
858 unreadpure () /* Used as unwind-protect function in readevalloop */
865 readevalloop (readcharfun
, stream
, sourcename
, evalfun
, printflag
)
866 Lisp_Object readcharfun
;
868 Lisp_Object sourcename
;
869 Lisp_Object (*evalfun
) ();
873 register Lisp_Object val
;
874 int count
= specpdl_ptr
- specpdl
;
876 struct buffer
*b
= 0;
878 if (BUFFERP (readcharfun
))
879 b
= XBUFFER (readcharfun
);
880 else if (MARKERP (readcharfun
))
881 b
= XMARKER (readcharfun
)->buffer
;
883 specbind (Qstandard_input
, readcharfun
);
884 specbind (Qcurrent_load_list
, Qnil
);
888 LOADHIST_ATTACH (sourcename
);
892 if (b
!= 0 && NILP (b
->name
))
893 error ("Reading from killed buffer");
899 while ((c
= READCHAR
) != '\n' && c
!= -1);
904 /* Ignore whitespace here, so we can detect eof. */
905 if (c
== ' ' || c
== '\t' || c
== '\n' || c
== '\f' || c
== '\r')
908 if (!NILP (Vpurify_flag
) && c
== '(')
910 int count1
= specpdl_ptr
- specpdl
;
911 record_unwind_protect (unreadpure
, Qnil
);
912 val
= read_list (-1, readcharfun
);
913 unbind_to (count1
, Qnil
);
919 if (NILP (Vload_read_function
))
920 val
= read0 (readcharfun
);
922 val
= call1 (Vload_read_function
, readcharfun
);
925 val
= (*evalfun
) (val
);
928 Vvalues
= Fcons (val
, Vvalues
);
929 if (EQ (Vstandard_output
, Qt
))
936 build_load_history (stream
, sourcename
);
939 unbind_to (count
, Qnil
);
944 DEFUN ("eval-buffer", Feval_buffer
, Seval_buffer
, 0, 3, "",
945 "Execute the current buffer as Lisp code.\n\
946 Programs can pass two arguments, BUFFER and PRINTFLAG.\n\
947 BUFFER is the buffer to evaluate (nil means use current buffer).\n\
948 PRINTFLAG controls printing of output:\n\
949 nil means discard it; anything else is stream for print.\n\
951 If the optional third argument FILENAME is non-nil,\n\
952 it specifies the file name to use for `load-history'.\n\
954 This function preserves the position of point.")
955 (buffer
, printflag
, filename
)
956 Lisp_Object buffer
, printflag
, filename
;
958 int count
= specpdl_ptr
- specpdl
;
959 Lisp_Object tem
, buf
;
962 buf
= Fcurrent_buffer ();
964 buf
= Fget_buffer (buffer
);
966 error ("No such buffer");
968 if (NILP (printflag
))
974 filename
= XBUFFER (buf
)->filename
;
976 specbind (Qstandard_output
, tem
);
977 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
978 BUF_SET_PT (XBUFFER (buf
), BUF_BEGV (XBUFFER (buf
)));
979 readevalloop (buf
, 0, filename
, Feval
, !NILP (printflag
));
980 unbind_to (count
, Qnil
);
986 XDEFUN ("eval-current-buffer", Feval_current_buffer
, Seval_current_buffer
, 0, 1, "",
987 "Execute the current buffer as Lisp code.\n\
988 Programs can pass argument PRINTFLAG which controls printing of output:\n\
989 nil means discard it; anything else is stream for print.\n\
991 If there is no error, point does not move. If there is an error,\n\
992 point remains at the end of the last character read from the buffer.")
994 Lisp_Object printflag
;
996 int count
= specpdl_ptr
- specpdl
;
997 Lisp_Object tem
, cbuf
;
999 cbuf
= Fcurrent_buffer ()
1001 if (NILP (printflag
))
1005 specbind (Qstandard_output
, tem
);
1006 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1008 readevalloop (cbuf
, 0, XBUFFER (cbuf
)->filename
, Feval
, !NILP (printflag
));
1009 return unbind_to (count
, Qnil
);
1013 DEFUN ("eval-region", Feval_region
, Seval_region
, 2, 3, "r",
1014 "Execute the region as Lisp code.\n\
1015 When called from programs, expects two arguments,\n\
1016 giving starting and ending indices in the current buffer\n\
1017 of the text to be executed.\n\
1018 Programs can pass third argument PRINTFLAG which controls output:\n\
1019 nil means discard it; anything else is stream for printing it.\n\
1021 If there is no error, point does not move. If there is an error,\n\
1022 point remains at the end of the last character read from the buffer.")
1023 (start
, end
, printflag
)
1024 Lisp_Object start
, end
, printflag
;
1026 int count
= specpdl_ptr
- specpdl
;
1027 Lisp_Object tem
, cbuf
;
1029 cbuf
= Fcurrent_buffer ();
1031 if (NILP (printflag
))
1035 specbind (Qstandard_output
, tem
);
1037 if (NILP (printflag
))
1038 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1039 record_unwind_protect (save_restriction_restore
, save_restriction_save ());
1041 /* This both uses start and checks its type. */
1043 Fnarrow_to_region (make_number (BEGV
), end
);
1044 readevalloop (cbuf
, 0, XBUFFER (cbuf
)->filename
, Feval
, !NILP (printflag
));
1046 return unbind_to (count
, Qnil
);
1049 #endif /* standalone */
1051 DEFUN ("read", Fread
, Sread
, 0, 1, 0,
1052 "Read one Lisp expression as text from STREAM, return as Lisp object.\n\
1053 If STREAM is nil, use the value of `standard-input' (which see).\n\
1054 STREAM or the value of `standard-input' may be:\n\
1055 a buffer (read from point and advance it)\n\
1056 a marker (read from where it points and advance it)\n\
1057 a function (call it with no arguments for each character,\n\
1058 call it with a char as argument to push a char back)\n\
1059 a string (takes text from string, starting at the beginning)\n\
1060 t (read text line using minibuffer and use it).")
1064 extern Lisp_Object
Fread_minibuffer ();
1067 stream
= Vstandard_input
;
1068 if (EQ (stream
, Qt
))
1069 stream
= Qread_char
;
1071 new_backquote_flag
= 0;
1072 read_objects
= Qnil
;
1075 if (EQ (stream
, Qread_char
))
1076 return Fread_minibuffer (build_string ("Lisp expression: "), Qnil
);
1079 if (STRINGP (stream
))
1080 return Fcar (Fread_from_string (stream
, Qnil
, Qnil
));
1082 return read0 (stream
);
1085 DEFUN ("read-from-string", Fread_from_string
, Sread_from_string
, 1, 3, 0,
1086 "Read one Lisp expression which is represented as text by STRING.\n\
1087 Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX).\n\
1088 START and END optionally delimit a substring of STRING from which to read;\n\
1089 they default to 0 and (length STRING) respectively.")
1090 (string
, start
, end
)
1091 Lisp_Object string
, start
, end
;
1093 int startval
, endval
;
1096 CHECK_STRING (string
,0);
1099 endval
= XSTRING (string
)->size
;
1101 { CHECK_NUMBER (end
,2);
1102 endval
= XINT (end
);
1103 if (endval
< 0 || endval
> XSTRING (string
)->size
)
1104 args_out_of_range (string
, end
);
1110 { CHECK_NUMBER (start
,1);
1111 startval
= XINT (start
);
1112 if (startval
< 0 || startval
> endval
)
1113 args_out_of_range (string
, start
);
1116 read_from_string_index
= startval
;
1117 read_from_string_limit
= endval
;
1119 new_backquote_flag
= 0;
1120 read_objects
= Qnil
;
1122 tem
= read0 (string
);
1123 return Fcons (tem
, make_number (read_from_string_index
));
1126 /* Use this for recursive reads, in contexts where internal tokens
1130 Lisp_Object readcharfun
;
1132 register Lisp_Object val
;
1135 val
= read1 (readcharfun
, &c
, 0);
1137 Fsignal (Qinvalid_read_syntax
, Fcons (make_string (&c
, 1), Qnil
));
1142 static int read_buffer_size
;
1143 static char *read_buffer
;
1145 /* Read multibyte form and return it as a character. C is a first
1146 byte of multibyte form, and rest of them are read from
1149 read_multibyte (c
, readcharfun
)
1151 Lisp_Object readcharfun
;
1153 /* We need the actual character code of this multibyte
1155 unsigned char str
[MAX_LENGTH_OF_MULTI_BYTE_FORM
];
1159 while ((c
= READCHAR
) >= 0xA0
1160 && len
< MAX_LENGTH_OF_MULTI_BYTE_FORM
)
1163 return STRING_CHAR (str
, len
);
1167 read_escape (readcharfun
)
1168 Lisp_Object readcharfun
;
1170 register int c
= READCHAR
;
1174 error ("End of file");
1200 error ("Invalid escape character syntax");
1203 c
= read_escape (readcharfun
);
1204 return c
| meta_modifier
;
1209 error ("Invalid escape character syntax");
1212 c
= read_escape (readcharfun
);
1213 return c
| shift_modifier
;
1218 error ("Invalid escape character syntax");
1221 c
= read_escape (readcharfun
);
1222 return c
| hyper_modifier
;
1227 error ("Invalid escape character syntax");
1230 c
= read_escape (readcharfun
);
1231 return c
| alt_modifier
;
1236 error ("Invalid escape character syntax");
1239 c
= read_escape (readcharfun
);
1240 return c
| super_modifier
;
1245 error ("Invalid escape character syntax");
1249 c
= read_escape (readcharfun
);
1250 if ((c
& 0177) == '?')
1252 /* ASCII control chars are made from letters (both cases),
1253 as well as the non-letters within 0100...0137. */
1254 else if ((c
& 0137) >= 0101 && (c
& 0137) <= 0132)
1255 return (c
& (037 | ~0177));
1256 else if ((c
& 0177) >= 0100 && (c
& 0177) <= 0137)
1257 return (c
& (037 | ~0177));
1259 return c
| ctrl_modifier
;
1269 /* An octal escape, as in ANSI C. */
1271 register int i
= c
- '0';
1272 register int count
= 0;
1275 if ((c
= READCHAR
) >= '0' && c
<= '7')
1290 /* A hex escape, as in ANSI C. */
1296 if (c
>= '0' && c
<= '9')
1301 else if ((c
>= 'a' && c
<= 'f')
1302 || (c
>= 'A' && c
<= 'F'))
1305 if (c
>= 'a' && c
<= 'f')
1320 if (BASE_LEADING_CODE_P (c
))
1321 c
= read_multibyte (c
, readcharfun
);
1326 /* If the next token is ')' or ']' or '.', we store that character
1327 in *PCH and the return value is not interesting. Else, we store
1328 zero in *PCH and we read and return one lisp object.
1330 FIRST_IN_LIST is nonzero if this is the first element of a list. */
1333 read1 (readcharfun
, pch
, first_in_list
)
1334 register Lisp_Object readcharfun
;
1339 int uninterned_symbol
= 0;
1346 if (c
< 0) return Fsignal (Qend_of_file
, Qnil
);
1351 return read_list (0, readcharfun
);
1354 return read_vector (readcharfun
);
1371 tmp
= read_vector (readcharfun
);
1372 if (XVECTOR (tmp
)->size
< CHAR_TABLE_STANDARD_SLOTS
1373 || XVECTOR (tmp
)->size
> CHAR_TABLE_STANDARD_SLOTS
+ 10)
1374 error ("Invalid size char-table");
1375 XSETCHAR_TABLE (tmp
, XCHAR_TABLE (tmp
));
1376 XCHAR_TABLE (tmp
)->top
= Qt
;
1385 tmp
= read_vector (readcharfun
);
1386 if (XVECTOR (tmp
)->size
!= SUB_CHAR_TABLE_STANDARD_SLOTS
)
1387 error ("Invalid size char-table");
1388 XSETCHAR_TABLE (tmp
, XCHAR_TABLE (tmp
));
1389 XCHAR_TABLE (tmp
)->top
= Qnil
;
1392 Fsignal (Qinvalid_read_syntax
,
1393 Fcons (make_string ("#^^", 3), Qnil
));
1395 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#^", 2), Qnil
));
1400 length
= read1 (readcharfun
, pch
, first_in_list
);
1404 Lisp_Object tmp
, val
;
1405 int size_in_chars
= ((XFASTINT (length
) + BITS_PER_CHAR
- 1)
1409 tmp
= read1 (readcharfun
, pch
, first_in_list
);
1410 if (size_in_chars
!= XSTRING (tmp
)->size
1411 /* We used to print 1 char too many
1412 when the number of bits was a multiple of 8.
1413 Accept such input in case it came from an old version. */
1414 && ! (XFASTINT (length
)
1415 == (XSTRING (tmp
)->size
- 1) * BITS_PER_CHAR
))
1416 Fsignal (Qinvalid_read_syntax
,
1417 Fcons (make_string ("#&...", 5), Qnil
));
1419 val
= Fmake_bool_vector (length
, Qnil
);
1420 bcopy (XSTRING (tmp
)->data
, XBOOL_VECTOR (val
)->data
,
1424 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#&...", 5),
1429 /* Accept compiled functions at read-time so that we don't have to
1430 build them using function calls. */
1432 tmp
= read_vector (readcharfun
);
1433 return Fmake_byte_code (XVECTOR (tmp
)->size
,
1434 XVECTOR (tmp
)->contents
);
1436 #ifdef USE_TEXT_PROPERTIES
1440 struct gcpro gcpro1
;
1443 /* Read the string itself. */
1444 tmp
= read1 (readcharfun
, &ch
, 0);
1445 if (ch
!= 0 || !STRINGP (tmp
))
1446 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#", 1), Qnil
));
1448 /* Read the intervals and their properties. */
1451 Lisp_Object beg
, end
, plist
;
1453 beg
= read1 (readcharfun
, &ch
, 0);
1457 end
= read1 (readcharfun
, &ch
, 0);
1459 plist
= read1 (readcharfun
, &ch
, 0);
1461 Fsignal (Qinvalid_read_syntax
,
1462 Fcons (build_string ("invalid string property list"),
1464 Fset_text_properties (beg
, end
, plist
, tmp
);
1470 /* #@NUMBER is used to skip NUMBER following characters.
1471 That's used in .elc files to skip over doc strings
1472 and function definitions. */
1477 /* Read a decimal integer. */
1478 while ((c
= READCHAR
) >= 0
1479 && c
>= '0' && c
<= '9')
1487 #ifndef DOS_NT /* I don't know if filepos works right on MSDOS and Windoze. */
1488 if (load_force_doc_strings
&& EQ (readcharfun
, Qget_file_char
))
1490 /* If we are supposed to force doc strings into core right now,
1491 record the last string that we skipped,
1492 and record where in the file it comes from. */
1493 if (saved_doc_string_size
== 0)
1495 saved_doc_string_size
= nskip
+ 100;
1496 saved_doc_string
= (char *) xmalloc (saved_doc_string_size
);
1498 if (nskip
> saved_doc_string_size
)
1500 saved_doc_string_size
= nskip
+ 100;
1501 saved_doc_string
= (char *) xrealloc (saved_doc_string
,
1502 saved_doc_string_size
);
1505 saved_doc_string_position
= ftell (instream
);
1507 /* Copy that many characters into saved_doc_string. */
1508 for (i
= 0; i
< nskip
&& c
>= 0; i
++)
1509 saved_doc_string
[i
] = c
= READCHAR
;
1511 saved_doc_string_length
= i
;
1514 #endif /* not DOS_NT */
1516 /* Skip that many characters. */
1517 for (i
= 0; i
< nskip
&& c
>= 0; i
++)
1523 return Vload_file_name
;
1525 return Fcons (Qfunction
, Fcons (read0 (readcharfun
), Qnil
));
1526 /* #:foo is the uninterned symbol named foo. */
1529 uninterned_symbol
= 1;
1533 /* Reader forms that can reuse previously read objects. */
1534 if (c
>= '0' && c
<= '9')
1539 /* Read a non-negative integer. */
1540 while (c
>= '0' && c
<= '9')
1546 /* #n=object returns object, but associates it with n for #n#. */
1549 tem
= read0 (readcharfun
);
1550 read_objects
= Fcons (Fcons (make_number (n
), tem
), read_objects
);
1553 /* #n# returns a previously read object. */
1556 tem
= Fassq (make_number (n
), read_objects
);
1559 /* Fall through to error message. */
1561 /* Fall through to error message. */
1565 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#", 1), Qnil
));
1568 while ((c
= READCHAR
) >= 0 && c
!= '\n');
1573 return Fcons (Qquote
, Fcons (read0 (readcharfun
), Qnil
));
1583 new_backquote_flag
= 1;
1584 value
= read0 (readcharfun
);
1585 new_backquote_flag
= 0;
1587 return Fcons (Qbackquote
, Fcons (value
, Qnil
));
1591 if (new_backquote_flag
)
1593 Lisp_Object comma_type
= Qnil
;
1598 comma_type
= Qcomma_at
;
1600 comma_type
= Qcomma_dot
;
1603 if (ch
>= 0) UNREAD (ch
);
1604 comma_type
= Qcomma
;
1607 new_backquote_flag
= 0;
1608 value
= read0 (readcharfun
);
1609 new_backquote_flag
= 1;
1610 return Fcons (comma_type
, Fcons (value
, Qnil
));
1617 register Lisp_Object val
;
1620 if (c
< 0) return Fsignal (Qend_of_file
, Qnil
);
1623 c
= read_escape (readcharfun
);
1624 else if (BASE_LEADING_CODE_P (c
))
1625 c
= read_multibyte (c
, readcharfun
);
1633 register char *p
= read_buffer
;
1634 register char *end
= read_buffer
+ read_buffer_size
;
1638 while ((c
= READCHAR
) >= 0
1643 char *new = (char *) xrealloc (read_buffer
, read_buffer_size
*= 2);
1644 p
+= new - read_buffer
;
1645 read_buffer
+= new - read_buffer
;
1646 end
= read_buffer
+ read_buffer_size
;
1650 c
= read_escape (readcharfun
);
1651 if (! SINGLE_BYTE_CHAR_P ((c
& ~CHAR_META
)))
1654 char *str
= workbuf
;
1657 length
= non_ascii_char_to_string (c
, workbuf
, &str
);
1659 if (p
+ length
> end
)
1661 char *new = (char *) xrealloc (read_buffer
, read_buffer_size
*= 2);
1662 p
+= new - read_buffer
;
1663 read_buffer
+= new - read_buffer
;
1664 end
= read_buffer
+ read_buffer_size
;
1667 bcopy (str
, p
, length
);
1672 /* c is -1 if \ newline has just been seen */
1675 if (p
== read_buffer
)
1680 /* Allow `\C- ' and `\C-?'. */
1681 if (c
== (CHAR_CTL
| ' '))
1683 else if (c
== (CHAR_CTL
| '?'))
1687 /* Move the meta bit to the right place for a string. */
1688 c
= (c
& ~CHAR_META
) | 0x80;
1690 error ("Invalid modifier in string");
1694 if (c
< 0) return Fsignal (Qend_of_file
, Qnil
);
1696 /* If purifying, and string starts with \ newline,
1697 return zero instead. This is for doc strings
1698 that we are really going to find in etc/DOC.nn.nn */
1699 if (!NILP (Vpurify_flag
) && NILP (Vdoc_file_name
) && cancel
)
1700 return make_number (0);
1703 return make_pure_string (read_buffer
, p
- read_buffer
);
1705 return make_string (read_buffer
, p
- read_buffer
);
1710 #ifdef LISP_FLOAT_TYPE
1711 /* If a period is followed by a number, then we should read it
1712 as a floating point number. Otherwise, it denotes a dotted
1714 int next_char
= READCHAR
;
1717 if (! (next_char
>= '0' && next_char
<= '9'))
1724 /* Otherwise, we fall through! Note that the atom-reading loop
1725 below will now loop at least once, assuring that we will not
1726 try to UNREAD two characters in a row. */
1730 if (c
<= 040) goto retry
;
1732 register char *p
= read_buffer
;
1736 register char *end
= read_buffer
+ read_buffer_size
;
1739 !(c
== '\"' || c
== '\'' || c
== ';' || c
== '?'
1740 || c
== '(' || c
== ')'
1741 #ifndef LISP_FLOAT_TYPE
1742 /* If we have floating-point support, then we need
1743 to allow <digits><dot><digits>. */
1745 #endif /* not LISP_FLOAT_TYPE */
1746 || c
== '[' || c
== ']' || c
== '#'
1751 register char *new = (char *) xrealloc (read_buffer
, read_buffer_size
*= 2);
1752 p
+= new - read_buffer
;
1753 read_buffer
+= new - read_buffer
;
1754 end
= read_buffer
+ read_buffer_size
;
1767 char *new = (char *) xrealloc (read_buffer
, read_buffer_size
*= 2);
1768 p
+= new - read_buffer
;
1769 read_buffer
+= new - read_buffer
;
1770 /* end = read_buffer + read_buffer_size; */
1777 if (!quoted
&& !uninterned_symbol
)
1780 register Lisp_Object val
;
1782 if (*p1
== '+' || *p1
== '-') p1
++;
1783 /* Is it an integer? */
1786 while (p1
!= p
&& (c
= *p1
) >= '0' && c
<= '9') p1
++;
1787 #ifdef LISP_FLOAT_TYPE
1788 /* Integers can have trailing decimal points. */
1789 if (p1
> read_buffer
&& p1
< p
&& *p1
== '.') p1
++;
1792 /* It is an integer. */
1794 #ifdef LISP_FLOAT_TYPE
1798 if (sizeof (int) == sizeof (EMACS_INT
))
1799 XSETINT (val
, atoi (read_buffer
));
1800 else if (sizeof (long) == sizeof (EMACS_INT
))
1801 XSETINT (val
, atol (read_buffer
));
1807 #ifdef LISP_FLOAT_TYPE
1808 if (isfloat_string (read_buffer
))
1809 return make_float (atof (read_buffer
));
1813 if (uninterned_symbol
)
1814 return make_symbol (read_buffer
);
1816 return intern (read_buffer
);
1821 #ifdef LISP_FLOAT_TYPE
1836 if (*cp
== '+' || *cp
== '-')
1839 if (*cp
>= '0' && *cp
<= '9')
1842 while (*cp
>= '0' && *cp
<= '9')
1850 if (*cp
>= '0' && *cp
<= '9')
1853 while (*cp
>= '0' && *cp
<= '9')
1856 if (*cp
== 'e' || *cp
== 'E')
1860 if (*cp
== '+' || *cp
== '-')
1864 if (*cp
>= '0' && *cp
<= '9')
1867 while (*cp
>= '0' && *cp
<= '9')
1870 return (((*cp
== 0) || (*cp
== ' ') || (*cp
== '\t') || (*cp
== '\n') || (*cp
== '\r') || (*cp
== '\f'))
1871 && (state
== (LEAD_INT
|DOT_CHAR
|TRAIL_INT
)
1872 || state
== (DOT_CHAR
|TRAIL_INT
)
1873 || state
== (LEAD_INT
|E_CHAR
|EXP_INT
)
1874 || state
== (LEAD_INT
|DOT_CHAR
|TRAIL_INT
|E_CHAR
|EXP_INT
)
1875 || state
== (DOT_CHAR
|TRAIL_INT
|E_CHAR
|EXP_INT
)));
1877 #endif /* LISP_FLOAT_TYPE */
1880 read_vector (readcharfun
)
1881 Lisp_Object readcharfun
;
1885 register Lisp_Object
*ptr
;
1886 register Lisp_Object tem
, vector
;
1887 register struct Lisp_Cons
*otem
;
1890 tem
= read_list (1, readcharfun
);
1891 len
= Flength (tem
);
1892 vector
= (read_pure
? make_pure_vector (XINT (len
)) : Fmake_vector (len
, Qnil
));
1895 size
= XVECTOR (vector
)->size
;
1896 ptr
= XVECTOR (vector
)->contents
;
1897 for (i
= 0; i
< size
; i
++)
1899 ptr
[i
] = read_pure
? Fpurecopy (Fcar (tem
)) : Fcar (tem
);
1907 /* flag = 1 means check for ] to terminate rather than ) and .
1908 flag = -1 means check for starting with defun
1909 and make structure pure. */
1912 read_list (flag
, readcharfun
)
1914 register Lisp_Object readcharfun
;
1916 /* -1 means check next element for defun,
1917 0 means don't check,
1918 1 means already checked and found defun. */
1919 int defunflag
= flag
< 0 ? -1 : 0;
1920 Lisp_Object val
, tail
;
1921 register Lisp_Object elt
, tem
;
1922 struct gcpro gcpro1
, gcpro2
;
1923 /* 0 is the normal case.
1924 1 means this list is a doc reference; replace it with the number 0.
1925 2 means this list is a doc reference; replace it with the doc string. */
1926 int doc_reference
= 0;
1928 /* Initialize this to 1 if we are reading a list. */
1929 int first_in_list
= flag
<= 0;
1938 elt
= read1 (readcharfun
, &ch
, first_in_list
);
1943 /* While building, if the list starts with #$, treat it specially. */
1944 if (EQ (elt
, Vload_file_name
)
1945 && !NILP (Vpurify_flag
))
1947 if (NILP (Vdoc_file_name
))
1948 /* We have not yet called Snarf-documentation, so assume
1949 this file is described in the DOC-MM.NN file
1950 and Snarf-documentation will fill in the right value later.
1951 For now, replace the whole list with 0. */
1954 /* We have already called Snarf-documentation, so make a relative
1955 file name for this file, so it can be found properly
1956 in the installed Lisp directory.
1957 We don't use Fexpand_file_name because that would make
1958 the directory absolute now. */
1959 elt
= concat2 (build_string ("../lisp/"),
1960 Ffile_name_nondirectory (elt
));
1962 else if (EQ (elt
, Vload_file_name
)
1963 && load_force_doc_strings
)
1972 Fsignal (Qinvalid_read_syntax
,
1973 Fcons (make_string (") or . in a vector", 18), Qnil
));
1981 XCONS (tail
)->cdr
= read0 (readcharfun
);
1983 val
= read0 (readcharfun
);
1984 read1 (readcharfun
, &ch
, 0);
1988 if (doc_reference
== 1)
1989 return make_number (0);
1990 if (doc_reference
== 2)
1992 /* Get a doc string from the file we are loading.
1993 If it's in saved_doc_string, get it from there. */
1994 int pos
= XINT (XCONS (val
)->cdr
);
1995 if (pos
>= saved_doc_string_position
1996 && pos
< (saved_doc_string_position
1997 + saved_doc_string_length
))
1999 int start
= pos
- saved_doc_string_position
;
2002 /* Process quoting with ^A,
2003 and find the end of the string,
2004 which is marked with ^_ (037). */
2005 for (from
= start
, to
= start
;
2006 saved_doc_string
[from
] != 037;)
2008 int c
= saved_doc_string
[from
++];
2011 c
= saved_doc_string
[from
++];
2013 saved_doc_string
[to
++] = c
;
2015 saved_doc_string
[to
++] = 0;
2017 saved_doc_string
[to
++] = 037;
2020 saved_doc_string
[to
++] = c
;
2023 return make_string (saved_doc_string
+ start
,
2027 return read_doc_string (val
);
2032 return Fsignal (Qinvalid_read_syntax
, Fcons (make_string (". in wrong context", 18), Qnil
));
2034 return Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("] in a list", 11), Qnil
));
2036 tem
= (read_pure
&& flag
<= 0
2037 ? pure_cons (elt
, Qnil
)
2038 : Fcons (elt
, Qnil
));
2040 XCONS (tail
)->cdr
= tem
;
2045 defunflag
= EQ (elt
, Qdefun
);
2046 else if (defunflag
> 0)
2051 Lisp_Object Vobarray
;
2052 Lisp_Object initial_obarray
;
2054 /* oblookup stores the bucket number here, for the sake of Funintern. */
2056 int oblookup_last_bucket_number
;
2058 static int hash_string ();
2059 Lisp_Object
oblookup ();
2061 /* Get an error if OBARRAY is not an obarray.
2062 If it is one, return it. */
2065 check_obarray (obarray
)
2066 Lisp_Object obarray
;
2068 while (!VECTORP (obarray
) || XVECTOR (obarray
)->size
== 0)
2070 /* If Vobarray is now invalid, force it to be valid. */
2071 if (EQ (Vobarray
, obarray
)) Vobarray
= initial_obarray
;
2073 obarray
= wrong_type_argument (Qvectorp
, obarray
);
2078 /* Intern the C string STR: return a symbol with that name,
2079 interned in the current obarray. */
2086 int len
= strlen (str
);
2087 Lisp_Object obarray
;
2090 if (!VECTORP (obarray
) || XVECTOR (obarray
)->size
== 0)
2091 obarray
= check_obarray (obarray
);
2092 tem
= oblookup (obarray
, str
, len
);
2095 return Fintern (make_string (str
, len
), obarray
);
2098 /* Create an uninterned symbol with name STR. */
2104 int len
= strlen (str
);
2106 return Fmake_symbol ((!NILP (Vpurify_flag
)
2107 ? make_pure_string (str
, len
)
2108 : make_string (str
, len
)));
2111 DEFUN ("intern", Fintern
, Sintern
, 1, 2, 0,
2112 "Return the canonical symbol whose name is STRING.\n\
2113 If there is none, one is created by this function and returned.\n\
2114 A second optional argument specifies the obarray to use;\n\
2115 it defaults to the value of `obarray'.")
2117 Lisp_Object string
, obarray
;
2119 register Lisp_Object tem
, sym
, *ptr
;
2121 if (NILP (obarray
)) obarray
= Vobarray
;
2122 obarray
= check_obarray (obarray
);
2124 CHECK_STRING (string
, 0);
2126 tem
= oblookup (obarray
, XSTRING (string
)->data
, XSTRING (string
)->size
);
2127 if (!INTEGERP (tem
))
2130 if (!NILP (Vpurify_flag
))
2131 string
= Fpurecopy (string
);
2132 sym
= Fmake_symbol (string
);
2133 XSYMBOL (sym
)->obarray
= obarray
;
2135 if (XSTRING (string
)->data
[0] == ':')
2136 XSYMBOL (sym
)->value
= sym
;
2138 ptr
= &XVECTOR (obarray
)->contents
[XINT (tem
)];
2140 XSYMBOL (sym
)->next
= XSYMBOL (*ptr
);
2142 XSYMBOL (sym
)->next
= 0;
2147 DEFUN ("intern-soft", Fintern_soft
, Sintern_soft
, 1, 2, 0,
2148 "Return the canonical symbol whose name is STRING, or nil if none exists.\n\
2149 A second optional argument specifies the obarray to use;\n\
2150 it defaults to the value of `obarray'.")
2152 Lisp_Object string
, obarray
;
2154 register Lisp_Object tem
;
2156 if (NILP (obarray
)) obarray
= Vobarray
;
2157 obarray
= check_obarray (obarray
);
2159 CHECK_STRING (string
, 0);
2161 tem
= oblookup (obarray
, XSTRING (string
)->data
, XSTRING (string
)->size
);
2162 if (!INTEGERP (tem
))
2167 DEFUN ("unintern", Funintern
, Sunintern
, 1, 2, 0,
2168 "Delete the symbol named NAME, if any, from OBARRAY.\n\
2169 The value is t if a symbol was found and deleted, nil otherwise.\n\
2170 NAME may be a string or a symbol. If it is a symbol, that symbol\n\
2171 is deleted, if it belongs to OBARRAY--no other symbol is deleted.\n\
2172 OBARRAY defaults to the value of the variable `obarray'.")
2174 Lisp_Object name
, obarray
;
2176 register Lisp_Object string
, tem
;
2179 if (NILP (obarray
)) obarray
= Vobarray
;
2180 obarray
= check_obarray (obarray
);
2183 XSETSTRING (string
, XSYMBOL (name
)->name
);
2186 CHECK_STRING (name
, 0);
2190 tem
= oblookup (obarray
, XSTRING (string
)->data
, XSTRING (string
)->size
);
2193 /* If arg was a symbol, don't delete anything but that symbol itself. */
2194 if (SYMBOLP (name
) && !EQ (name
, tem
))
2197 hash
= oblookup_last_bucket_number
;
2199 if (EQ (XVECTOR (obarray
)->contents
[hash
], tem
))
2201 if (XSYMBOL (tem
)->next
)
2202 XSETSYMBOL (XVECTOR (obarray
)->contents
[hash
], XSYMBOL (tem
)->next
);
2204 XSETINT (XVECTOR (obarray
)->contents
[hash
], 0);
2208 Lisp_Object tail
, following
;
2210 for (tail
= XVECTOR (obarray
)->contents
[hash
];
2211 XSYMBOL (tail
)->next
;
2214 XSETSYMBOL (following
, XSYMBOL (tail
)->next
);
2215 if (EQ (following
, tem
))
2217 XSYMBOL (tail
)->next
= XSYMBOL (following
)->next
;
2226 /* Return the symbol in OBARRAY whose names matches the string
2227 of SIZE characters at PTR. If there is no such symbol in OBARRAY,
2230 Also store the bucket number in oblookup_last_bucket_number. */
2233 oblookup (obarray
, ptr
, size
)
2234 Lisp_Object obarray
;
2240 register Lisp_Object tail
;
2241 Lisp_Object bucket
, tem
;
2243 if (!VECTORP (obarray
)
2244 || (obsize
= XVECTOR (obarray
)->size
) == 0)
2246 obarray
= check_obarray (obarray
);
2247 obsize
= XVECTOR (obarray
)->size
;
2249 /* This is sometimes needed in the middle of GC. */
2250 obsize
&= ~ARRAY_MARK_FLAG
;
2251 /* Combining next two lines breaks VMS C 2.3. */
2252 hash
= hash_string (ptr
, size
);
2254 bucket
= XVECTOR (obarray
)->contents
[hash
];
2255 oblookup_last_bucket_number
= hash
;
2256 if (XFASTINT (bucket
) == 0)
2258 else if (!SYMBOLP (bucket
))
2259 error ("Bad data in guts of obarray"); /* Like CADR error message */
2261 for (tail
= bucket
; ; XSETSYMBOL (tail
, XSYMBOL (tail
)->next
))
2263 if (XSYMBOL (tail
)->name
->size
== size
2264 && !bcmp (XSYMBOL (tail
)->name
->data
, ptr
, size
))
2266 else if (XSYMBOL (tail
)->next
== 0)
2269 XSETINT (tem
, hash
);
2274 hash_string (ptr
, len
)
2278 register unsigned char *p
= ptr
;
2279 register unsigned char *end
= p
+ len
;
2280 register unsigned char c
;
2281 register int hash
= 0;
2286 if (c
>= 0140) c
-= 40;
2287 hash
= ((hash
<<3) + (hash
>>28) + c
);
2289 return hash
& 07777777777;
2293 map_obarray (obarray
, fn
, arg
)
2294 Lisp_Object obarray
;
2299 register Lisp_Object tail
;
2300 CHECK_VECTOR (obarray
, 1);
2301 for (i
= XVECTOR (obarray
)->size
- 1; i
>= 0; i
--)
2303 tail
= XVECTOR (obarray
)->contents
[i
];
2308 if (XSYMBOL (tail
)->next
== 0)
2310 XSETSYMBOL (tail
, XSYMBOL (tail
)->next
);
2315 mapatoms_1 (sym
, function
)
2316 Lisp_Object sym
, function
;
2318 call1 (function
, sym
);
2321 DEFUN ("mapatoms", Fmapatoms
, Smapatoms
, 1, 2, 0,
2322 "Call FUNCTION on every symbol in OBARRAY.\n\
2323 OBARRAY defaults to the value of `obarray'.")
2325 Lisp_Object function
, obarray
;
2329 if (NILP (obarray
)) obarray
= Vobarray
;
2330 obarray
= check_obarray (obarray
);
2332 map_obarray (obarray
, mapatoms_1
, function
);
2336 #define OBARRAY_SIZE 1511
2341 Lisp_Object oblength
;
2345 XSETFASTINT (oblength
, OBARRAY_SIZE
);
2347 Qnil
= Fmake_symbol (make_pure_string ("nil", 3));
2348 Vobarray
= Fmake_vector (oblength
, make_number (0));
2349 initial_obarray
= Vobarray
;
2350 staticpro (&initial_obarray
);
2351 /* Intern nil in the obarray */
2352 XSYMBOL (Qnil
)->obarray
= Vobarray
;
2353 /* These locals are to kludge around a pyramid compiler bug. */
2354 hash
= hash_string ("nil", 3);
2355 /* Separate statement here to avoid VAXC bug. */
2356 hash
%= OBARRAY_SIZE
;
2357 tem
= &XVECTOR (Vobarray
)->contents
[hash
];
2360 Qunbound
= Fmake_symbol (make_pure_string ("unbound", 7));
2361 XSYMBOL (Qnil
)->function
= Qunbound
;
2362 XSYMBOL (Qunbound
)->value
= Qunbound
;
2363 XSYMBOL (Qunbound
)->function
= Qunbound
;
2366 XSYMBOL (Qnil
)->value
= Qnil
;
2367 XSYMBOL (Qnil
)->plist
= Qnil
;
2368 XSYMBOL (Qt
)->value
= Qt
;
2370 /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */
2373 Qvariable_documentation
= intern ("variable-documentation");
2374 staticpro (&Qvariable_documentation
);
2376 read_buffer_size
= 100;
2377 read_buffer
= (char *) malloc (read_buffer_size
);
2382 struct Lisp_Subr
*sname
;
2385 sym
= intern (sname
->symbol_name
);
2386 XSETSUBR (XSYMBOL (sym
)->function
, sname
);
2389 #ifdef NOTDEF /* use fset in subr.el now */
2391 defalias (sname
, string
)
2392 struct Lisp_Subr
*sname
;
2396 sym
= intern (string
);
2397 XSETSUBR (XSYMBOL (sym
)->function
, sname
);
2401 /* Define an "integer variable"; a symbol whose value is forwarded
2402 to a C variable of type int. Sample call: */
2403 /* DEFVAR_INT ("indent-tabs-mode", &indent_tabs_mode, "Documentation"); */
2405 defvar_int (namestring
, address
)
2409 Lisp_Object sym
, val
;
2410 sym
= intern (namestring
);
2411 val
= allocate_misc ();
2412 XMISCTYPE (val
) = Lisp_Misc_Intfwd
;
2413 XINTFWD (val
)->intvar
= address
;
2414 XSYMBOL (sym
)->value
= val
;
2417 /* Similar but define a variable whose value is T if address contains 1,
2418 NIL if address contains 0 */
2420 defvar_bool (namestring
, address
)
2424 Lisp_Object sym
, val
;
2425 sym
= intern (namestring
);
2426 val
= allocate_misc ();
2427 XMISCTYPE (val
) = Lisp_Misc_Boolfwd
;
2428 XBOOLFWD (val
)->boolvar
= address
;
2429 XSYMBOL (sym
)->value
= val
;
2432 /* Similar but define a variable whose value is the Lisp Object stored
2433 at address. Two versions: with and without gc-marking of the C
2434 variable. The nopro version is used when that variable will be
2435 gc-marked for some other reason, since marking the same slot twice
2436 can cause trouble with strings. */
2438 defvar_lisp_nopro (namestring
, address
)
2440 Lisp_Object
*address
;
2442 Lisp_Object sym
, val
;
2443 sym
= intern (namestring
);
2444 val
= allocate_misc ();
2445 XMISCTYPE (val
) = Lisp_Misc_Objfwd
;
2446 XOBJFWD (val
)->objvar
= address
;
2447 XSYMBOL (sym
)->value
= val
;
2451 defvar_lisp (namestring
, address
)
2453 Lisp_Object
*address
;
2455 defvar_lisp_nopro (namestring
, address
);
2456 staticpro (address
);
2461 /* Similar but define a variable whose value is the Lisp Object stored in
2462 the current buffer. address is the address of the slot in the buffer
2463 that is current now. */
2466 defvar_per_buffer (namestring
, address
, type
, doc
)
2468 Lisp_Object
*address
;
2472 Lisp_Object sym
, val
;
2474 extern struct buffer buffer_local_symbols
;
2476 sym
= intern (namestring
);
2477 val
= allocate_misc ();
2478 offset
= (char *)address
- (char *)current_buffer
;
2480 XMISCTYPE (val
) = Lisp_Misc_Buffer_Objfwd
;
2481 XBUFFER_OBJFWD (val
)->offset
= offset
;
2482 XSYMBOL (sym
)->value
= val
;
2483 *(Lisp_Object
*)(offset
+ (char *)&buffer_local_symbols
) = sym
;
2484 *(Lisp_Object
*)(offset
+ (char *)&buffer_local_types
) = type
;
2485 if (XINT (*(Lisp_Object
*)(offset
+ (char *)&buffer_local_flags
)) == 0)
2486 /* Did a DEFVAR_PER_BUFFER without initializing the corresponding
2487 slot of buffer_local_flags */
2491 #endif /* standalone */
2493 /* Similar but define a variable whose value is the Lisp Object stored
2494 at a particular offset in the current kboard object. */
2497 defvar_kboard (namestring
, offset
)
2501 Lisp_Object sym
, val
;
2502 sym
= intern (namestring
);
2503 val
= allocate_misc ();
2504 XMISCTYPE (val
) = Lisp_Misc_Kboard_Objfwd
;
2505 XKBOARD_OBJFWD (val
)->offset
= offset
;
2506 XSYMBOL (sym
)->value
= val
;
2509 /* Record the value of load-path used at the start of dumping
2510 so we can see if the site changed it later during dumping. */
2511 static Lisp_Object dump_path
;
2516 int turn_off_warning
= 0;
2518 #ifdef HAVE_SETLOCALE
2519 /* Make sure numbers are parsed as we expect. */
2520 setlocale (LC_NUMERIC
, "C");
2521 #endif /* HAVE_SETLOCALE */
2523 /* Compute the default load-path. */
2525 normal
= PATH_LOADSEARCH
;
2526 Vload_path
= decode_env_path (0, normal
);
2528 if (NILP (Vpurify_flag
))
2529 normal
= PATH_LOADSEARCH
;
2531 normal
= PATH_DUMPLOADSEARCH
;
2533 /* In a dumped Emacs, we normally have to reset the value of
2534 Vload_path from PATH_LOADSEARCH, since the value that was dumped
2535 uses ../lisp, instead of the path of the installed elisp
2536 libraries. However, if it appears that Vload_path was changed
2537 from the default before dumping, don't override that value. */
2540 if (! NILP (Fequal (dump_path
, Vload_path
)))
2542 Vload_path
= decode_env_path (0, normal
);
2543 if (!NILP (Vinstallation_directory
))
2545 /* Add to the path the lisp subdir of the
2546 installation dir, if it exists. */
2547 Lisp_Object tem
, tem1
;
2548 tem
= Fexpand_file_name (build_string ("lisp"),
2549 Vinstallation_directory
);
2550 tem1
= Ffile_exists_p (tem
);
2553 if (NILP (Fmember (tem
, Vload_path
)))
2555 turn_off_warning
= 1;
2556 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2560 /* That dir doesn't exist, so add the build-time
2561 Lisp dirs instead. */
2562 Vload_path
= nconc2 (Vload_path
, dump_path
);
2564 /* Add leim under the installation dir, if it exists. */
2565 tem
= Fexpand_file_name (build_string ("leim"),
2566 Vinstallation_directory
);
2567 tem1
= Ffile_exists_p (tem
);
2570 if (NILP (Fmember (tem
, Vload_path
)))
2571 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2574 /* Add site-list under the installation dir, if it exists. */
2575 tem
= Fexpand_file_name (build_string ("site-lisp"),
2576 Vinstallation_directory
);
2577 tem1
= Ffile_exists_p (tem
);
2580 if (NILP (Fmember (tem
, Vload_path
)))
2581 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2584 /* If Emacs was not built in the source directory,
2585 and it is run from where it was built, add to load-path
2586 the lisp, leim and site-lisp dirs under that directory. */
2588 if (NILP (Fequal (Vinstallation_directory
, Vsource_directory
)))
2592 tem
= Fexpand_file_name (build_string ("src/Makefile"),
2593 Vinstallation_directory
);
2594 tem1
= Ffile_exists_p (tem
);
2596 /* Don't be fooled if they moved the entire source tree
2597 AFTER dumping Emacs. If the build directory is indeed
2598 different from the source dir, src/Makefile.in and
2599 src/Makefile will not be found together. */
2600 tem
= Fexpand_file_name (build_string ("src/Makefile.in"),
2601 Vinstallation_directory
);
2602 tem2
= Ffile_exists_p (tem
);
2603 if (!NILP (tem1
) && NILP (tem2
))
2605 tem
= Fexpand_file_name (build_string ("lisp"),
2608 if (NILP (Fmember (tem
, Vload_path
)))
2609 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2611 tem
= Fexpand_file_name (build_string ("leim"),
2614 if (NILP (Fmember (tem
, Vload_path
)))
2615 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2617 tem
= Fexpand_file_name (build_string ("site-lisp"),
2620 if (NILP (Fmember (tem
, Vload_path
)))
2621 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2629 /* NORMAL refers to the lisp dir in the source directory. */
2630 /* We used to add ../lisp at the front here, but
2631 that caused trouble because it was copied from dump_path
2632 into Vload_path, aboe, when Vinstallation_directory was non-nil.
2633 It should be unnecessary. */
2634 Vload_path
= decode_env_path (0, normal
);
2635 dump_path
= Vload_path
;
2640 /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is
2641 almost never correct, thereby causing a warning to be printed out that
2642 confuses users. Since PATH_LOADSEARCH is always overridden by the
2643 EMACSLOADPATH environment variable below, disable the warning on NT. */
2645 /* Warn if dirs in the *standard* path don't exist. */
2646 if (!turn_off_warning
)
2648 Lisp_Object path_tail
;
2650 for (path_tail
= Vload_path
;
2652 path_tail
= XCONS (path_tail
)->cdr
)
2654 Lisp_Object dirfile
;
2655 dirfile
= Fcar (path_tail
);
2656 if (STRINGP (dirfile
))
2658 dirfile
= Fdirectory_file_name (dirfile
);
2659 if (access (XSTRING (dirfile
)->data
, 0) < 0)
2660 dir_warning ("Warning: Lisp directory `%s' does not exist.\n",
2661 XCONS (path_tail
)->car
);
2665 #endif /* WINDOWSNT */
2667 /* If the EMACSLOADPATH environment variable is set, use its value.
2668 This doesn't apply if we're dumping. */
2670 if (NILP (Vpurify_flag
)
2671 && egetenv ("EMACSLOADPATH"))
2673 Vload_path
= decode_env_path ("EMACSLOADPATH", normal
);
2677 load_in_progress
= 0;
2678 Vload_file_name
= Qnil
;
2680 load_descriptor_list
= Qnil
;
2683 /* Print a warning, using format string FORMAT, that directory DIRNAME
2684 does not exist. Print it on stderr and put it in *Message*. */
2686 dir_warning (format
, dirname
)
2688 Lisp_Object dirname
;
2691 = (char *) alloca (XSTRING (dirname
)->size
+ strlen (format
) + 5);
2693 fprintf (stderr
, format
, XSTRING (dirname
)->data
);
2694 sprintf (buffer
, format
, XSTRING (dirname
)->data
);
2695 message_dolog (buffer
, strlen (buffer
), 0);
2702 defsubr (&Sread_from_string
);
2704 defsubr (&Sintern_soft
);
2705 defsubr (&Sunintern
);
2707 defsubr (&Seval_buffer
);
2708 defsubr (&Seval_region
);
2709 defsubr (&Sread_char
);
2710 defsubr (&Sread_char_exclusive
);
2711 defsubr (&Sread_event
);
2712 defsubr (&Sget_file_char
);
2713 defsubr (&Smapatoms
);
2715 DEFVAR_LISP ("obarray", &Vobarray
,
2716 "Symbol table for use by `intern' and `read'.\n\
2717 It is a vector whose length ought to be prime for best results.\n\
2718 The vector's contents don't make sense if examined from Lisp programs;\n\
2719 to find all the symbols in an obarray, use `mapatoms'.");
2721 DEFVAR_LISP ("values", &Vvalues
,
2722 "List of values of all expressions which were read, evaluated and printed.\n\
2723 Order is reverse chronological.");
2725 DEFVAR_LISP ("standard-input", &Vstandard_input
,
2726 "Stream for read to get input from.\n\
2727 See documentation of `read' for possible values.");
2728 Vstandard_input
= Qt
;
2730 DEFVAR_LISP ("load-path", &Vload_path
,
2731 "*List of directories to search for files to load.\n\
2732 Each element is a string (directory name) or nil (try default directory).\n\
2733 Initialized based on EMACSLOADPATH environment variable, if any,\n\
2734 otherwise to default specified by file `paths.h' when Emacs was built.");
2736 DEFVAR_BOOL ("load-in-progress", &load_in_progress
,
2737 "Non-nil iff inside of `load'.");
2739 DEFVAR_LISP ("after-load-alist", &Vafter_load_alist
,
2740 "An alist of expressions to be evalled when particular files are loaded.\n\
2741 Each element looks like (FILENAME FORMS...).\n\
2742 When `load' is run and the file-name argument is FILENAME,\n\
2743 the FORMS in the corresponding element are executed at the end of loading.\n\n\
2744 FILENAME must match exactly! Normally FILENAME is the name of a library,\n\
2745 with no directory specified, since that is how `load' is normally called.\n\
2746 An error in FORMS does not undo the load,\n\
2747 but does prevent execution of the rest of the FORMS.");
2748 Vafter_load_alist
= Qnil
;
2750 DEFVAR_LISP ("load-history", &Vload_history
,
2751 "Alist mapping source file names to symbols and features.\n\
2752 Each alist element is a list that starts with a file name,\n\
2753 except for one element (optional) that starts with nil and describes\n\
2754 definitions evaluated from buffers not visiting files.\n\
2755 The remaining elements of each list are symbols defined as functions\n\
2756 or variables, and cons cells `(provide . FEATURE)' and `(require . FEATURE)'.");
2757 Vload_history
= Qnil
;
2759 DEFVAR_LISP ("load-file-name", &Vload_file_name
,
2760 "Full name of file being loaded by `load'.");
2761 Vload_file_name
= Qnil
;
2763 DEFVAR_LISP ("current-load-list", &Vcurrent_load_list
,
2764 "Used for internal purposes by `load'.");
2765 Vcurrent_load_list
= Qnil
;
2767 DEFVAR_LISP ("load-read-function", &Vload_read_function
,
2768 "Function used by `load' and `eval-region' for reading expressions.\n\
2769 The default is nil, which means use the function `read'.");
2770 Vload_read_function
= Qnil
;
2772 DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function
,
2773 "Function called in `load' for loading an Emacs lisp source file.\n\
2774 This function is for doing code conversion before reading the source file.\n\
2775 If nil, loading is done without any code conversion.\n\
2776 Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where\n\
2777 FULLNAME is the full name of FILE.\n\
2778 See `load' for the meaning of the remaining arguments.");
2779 Vload_source_file_function
= Qnil
;
2781 DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings
,
2782 "Non-nil means `load' should force-load all dynamic doc strings.\n\
2783 This is useful when the file being loaded is a temporary copy.");
2784 load_force_doc_strings
= 0;
2786 DEFVAR_LISP ("source-directory", &Vsource_directory
,
2787 "Directory in which Emacs sources were found when Emacs was built.\n\
2788 You cannot count on them to still be there!");
2790 = Fexpand_file_name (build_string ("../"),
2791 Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH
)));
2793 DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list
,
2794 "List of files that were preloaded (when dumping Emacs).");
2795 Vpreloaded_file_list
= Qnil
;
2797 /* Vsource_directory was initialized in init_lread. */
2799 load_descriptor_list
= Qnil
;
2800 staticpro (&load_descriptor_list
);
2802 Qcurrent_load_list
= intern ("current-load-list");
2803 staticpro (&Qcurrent_load_list
);
2805 Qstandard_input
= intern ("standard-input");
2806 staticpro (&Qstandard_input
);
2808 Qread_char
= intern ("read-char");
2809 staticpro (&Qread_char
);
2811 Qget_file_char
= intern ("get-file-char");
2812 staticpro (&Qget_file_char
);
2814 Qbackquote
= intern ("`");
2815 staticpro (&Qbackquote
);
2816 Qcomma
= intern (",");
2817 staticpro (&Qcomma
);
2818 Qcomma_at
= intern (",@");
2819 staticpro (&Qcomma_at
);
2820 Qcomma_dot
= intern (",.");
2821 staticpro (&Qcomma_dot
);
2823 Qinhibit_file_name_operation
= intern ("inhibit-file-name-operation");
2824 staticpro (&Qinhibit_file_name_operation
);
2826 Qascii_character
= intern ("ascii-character");
2827 staticpro (&Qascii_character
);
2829 Qfunction
= intern ("function");
2830 staticpro (&Qfunction
);
2832 Qload
= intern ("load");
2835 Qload_file_name
= intern ("load-file-name");
2836 staticpro (&Qload_file_name
);
2838 staticpro (&dump_path
);
2840 staticpro (&read_objects
);
2841 read_objects
= Qnil
;