1 /* Lisp parsing and input streams.
2 Copyright (C) 1985, 1986, 1987, 1988, 1989, 1993, 1994, 1995,
3 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
4 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
24 #include <sys/types.h>
30 #include "intervals.h"
32 #include "character.h"
39 #include "termhooks.h"
41 #include "blockinput.h"
45 #include <unistd.h> /* to get X_OK */
62 #endif /* HAVE_SETLOCALE */
72 #define file_offset off_t
73 #define file_tell ftello
75 #define file_offset long
76 #define file_tell ftell
83 Lisp_Object Qread_char
, Qget_file_char
, Qstandard_input
, Qcurrent_load_list
;
84 Lisp_Object Qvariable_documentation
, Vvalues
, Vstandard_input
, Vafter_load_alist
;
85 Lisp_Object Qascii_character
, Qload
, Qload_file_name
;
86 Lisp_Object Qbackquote
, Qcomma
, Qcomma_at
, Qcomma_dot
, Qfunction
;
87 Lisp_Object Qinhibit_file_name_operation
;
88 Lisp_Object Qeval_buffer_list
, Veval_buffer_list
;
89 Lisp_Object Qfile_truename
, Qdo_after_load_evaluation
; /* ACM 2006/5/16 */
91 /* Used instead of Qget_file_char while loading *.elc files compiled
92 by Emacs 21 or older. */
93 static Lisp_Object Qget_emacs_mule_file_char
;
95 static Lisp_Object Qload_force_doc_strings
;
97 extern Lisp_Object Qevent_symbol_element_mask
;
98 extern Lisp_Object Qfile_exists_p
;
100 /* non-zero if inside `load' */
101 int load_in_progress
;
103 /* Directory in which the sources were found. */
104 Lisp_Object Vsource_directory
;
106 /* Search path and suffixes for files to be loaded. */
107 Lisp_Object Vload_path
, Vload_suffixes
, Vload_file_rep_suffixes
;
109 /* File name of user's init file. */
110 Lisp_Object Vuser_init_file
;
112 /* This is the user-visible association list that maps features to
113 lists of defs in their load files. */
114 Lisp_Object Vload_history
;
116 /* This is used to build the load history. */
117 Lisp_Object Vcurrent_load_list
;
119 /* List of files that were preloaded. */
120 Lisp_Object Vpreloaded_file_list
;
122 /* Name of file actually being read by `load'. */
123 Lisp_Object Vload_file_name
;
125 /* Function to use for reading, in `load' and friends. */
126 Lisp_Object Vload_read_function
;
128 /* The association list of objects read with the #n=object form.
129 Each member of the list has the form (n . object), and is used to
130 look up the object for the corresponding #n# construct.
131 It must be set to nil before all top-level calls to read0. */
132 Lisp_Object read_objects
;
134 /* Nonzero means load should forcibly load all dynamic doc strings. */
135 static int load_force_doc_strings
;
137 /* Nonzero means read should convert strings to unibyte. */
138 static int load_convert_to_unibyte
;
140 /* Nonzero means READCHAR should read bytes one by one (not character)
141 when READCHARFUN is Qget_file_char or Qget_emacs_mule_file_char.
142 This is set to 1 by read1 temporarily while handling #@NUMBER. */
143 static int load_each_byte
;
145 /* Function to use for loading an Emacs Lisp source file (not
146 compiled) instead of readevalloop. */
147 Lisp_Object Vload_source_file_function
;
149 /* List of all DEFVAR_BOOL variables. Used by the byte optimizer. */
150 Lisp_Object Vbyte_boolean_vars
;
152 /* Whether or not to add a `read-positions' property to symbols
154 Lisp_Object Vread_with_symbol_positions
;
156 /* List of (SYMBOL . POSITION) accumulated so far. */
157 Lisp_Object Vread_symbol_positions_list
;
159 /* List of descriptors now open for Fload. */
160 static Lisp_Object load_descriptor_list
;
162 /* File for get_file_char to read from. Use by load. */
163 static FILE *instream
;
165 /* When nonzero, read conses in pure space */
166 static int read_pure
;
168 /* For use within read-from-string (this reader is non-reentrant!!) */
169 static int read_from_string_index
;
170 static int read_from_string_index_byte
;
171 static int read_from_string_limit
;
173 /* Number of characters read in the current call to Fread or
174 Fread_from_string. */
175 static int readchar_count
;
177 /* This contains the last string skipped with #@. */
178 static char *saved_doc_string
;
179 /* Length of buffer allocated in saved_doc_string. */
180 static int saved_doc_string_size
;
181 /* Length of actual data in saved_doc_string. */
182 static int saved_doc_string_length
;
183 /* This is the file position that string came from. */
184 static file_offset saved_doc_string_position
;
186 /* This contains the previous string skipped with #@.
187 We copy it from saved_doc_string when a new string
188 is put in saved_doc_string. */
189 static char *prev_saved_doc_string
;
190 /* Length of buffer allocated in prev_saved_doc_string. */
191 static int prev_saved_doc_string_size
;
192 /* Length of actual data in prev_saved_doc_string. */
193 static int prev_saved_doc_string_length
;
194 /* This is the file position that string came from. */
195 static file_offset prev_saved_doc_string_position
;
197 /* Nonzero means inside a new-style backquote
198 with no surrounding parentheses.
199 Fread initializes this to zero, so we need not specbind it
200 or worry about what happens to it when there is an error. */
201 static int new_backquote_flag
;
202 static Lisp_Object Vold_style_backquotes
, Qold_style_backquotes
;
204 /* A list of file names for files being loaded in Fload. Used to
205 check for recursive loads. */
207 static Lisp_Object Vloads_in_progress
;
209 /* Non-zero means load dangerous compiled Lisp files. */
211 int load_dangerous_libraries
;
213 /* A regular expression used to detect files compiled with Emacs. */
215 static Lisp_Object Vbytecomp_version_regexp
;
217 static int read_emacs_mule_char
P_ ((int, int (*) (int, Lisp_Object
),
220 static void readevalloop
P_ ((Lisp_Object
, FILE*, Lisp_Object
,
221 Lisp_Object (*) (), int,
222 Lisp_Object
, Lisp_Object
,
223 Lisp_Object
, Lisp_Object
));
224 static Lisp_Object load_unwind
P_ ((Lisp_Object
));
225 static Lisp_Object load_descriptor_unwind
P_ ((Lisp_Object
));
227 static void invalid_syntax
P_ ((const char *, int)) NO_RETURN
;
228 static void end_of_file_error
P_ (()) NO_RETURN
;
231 /* Functions that read one byte from the current source READCHARFUN
232 or unreads one byte. If the integer argument C is -1, it returns
233 one read byte, or -1 when there's no more byte in the source. If C
234 is 0 or positive, it unreads C, and the return value is not
237 static int readbyte_for_lambda
P_ ((int, Lisp_Object
));
238 static int readbyte_from_file
P_ ((int, Lisp_Object
));
239 static int readbyte_from_string
P_ ((int, Lisp_Object
));
241 /* Handle unreading and rereading of characters.
242 Write READCHAR to read a character,
243 UNREAD(c) to unread c to be read again.
245 These macros correctly read/unread multibyte characters. */
247 #define READCHAR readchar (readcharfun, NULL)
248 #define UNREAD(c) unreadchar (readcharfun, c)
250 /* Same as READCHAR but set *MULTIBYTE to the multibyteness of the source. */
251 #define READCHAR_REPORT_MULTIBYTE(multibyte) readchar (readcharfun, multibyte)
253 /* When READCHARFUN is Qget_file_char, Qget_emacs_mule_file_char,
254 Qlambda, or a cons, we use this to keep an unread character because
255 a file stream can't handle multibyte-char unreading. The value -1
256 means that there's no unread character. */
257 static int unread_char
;
260 readchar (readcharfun
, multibyte
)
261 Lisp_Object readcharfun
;
266 int (*readbyte
) P_ ((int, Lisp_Object
));
267 unsigned char buf
[MAX_MULTIBYTE_LENGTH
];
269 int emacs_mule_encoding
= 0;
276 if (BUFFERP (readcharfun
))
278 register struct buffer
*inbuffer
= XBUFFER (readcharfun
);
280 int pt_byte
= BUF_PT_BYTE (inbuffer
);
282 if (pt_byte
>= BUF_ZV_BYTE (inbuffer
))
285 if (! NILP (inbuffer
->enable_multibyte_characters
))
287 /* Fetch the character code from the buffer. */
288 unsigned char *p
= BUF_BYTE_ADDRESS (inbuffer
, pt_byte
);
289 BUF_INC_POS (inbuffer
, pt_byte
);
290 c
= STRING_CHAR (p
, pt_byte
- orig_pt_byte
);
296 c
= BUF_FETCH_BYTE (inbuffer
, pt_byte
);
297 if (! ASCII_BYTE_P (c
))
298 c
= BYTE8_TO_CHAR (c
);
301 SET_BUF_PT_BOTH (inbuffer
, BUF_PT (inbuffer
) + 1, pt_byte
);
305 if (MARKERP (readcharfun
))
307 register struct buffer
*inbuffer
= XMARKER (readcharfun
)->buffer
;
309 int bytepos
= marker_byte_position (readcharfun
);
311 if (bytepos
>= BUF_ZV_BYTE (inbuffer
))
314 if (! NILP (inbuffer
->enable_multibyte_characters
))
316 /* Fetch the character code from the buffer. */
317 unsigned char *p
= BUF_BYTE_ADDRESS (inbuffer
, bytepos
);
318 BUF_INC_POS (inbuffer
, bytepos
);
319 c
= STRING_CHAR (p
, bytepos
- orig_bytepos
);
325 c
= BUF_FETCH_BYTE (inbuffer
, bytepos
);
326 if (! ASCII_BYTE_P (c
))
327 c
= BYTE8_TO_CHAR (c
);
331 XMARKER (readcharfun
)->bytepos
= bytepos
;
332 XMARKER (readcharfun
)->charpos
++;
337 if (EQ (readcharfun
, Qlambda
))
339 readbyte
= readbyte_for_lambda
;
343 if (EQ (readcharfun
, Qget_file_char
))
345 readbyte
= readbyte_from_file
;
349 if (STRINGP (readcharfun
))
351 if (read_from_string_index
>= read_from_string_limit
)
353 else if (STRING_MULTIBYTE (readcharfun
))
357 FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c
, readcharfun
,
358 read_from_string_index
,
359 read_from_string_index_byte
);
363 c
= SREF (readcharfun
, read_from_string_index_byte
);
364 read_from_string_index
++;
365 read_from_string_index_byte
++;
370 if (CONSP (readcharfun
))
372 /* This is the case that read_vector is reading from a unibyte
373 string that contains a byte sequence previously skipped
374 because of #@NUMBER. The car part of readcharfun is that
375 string, and the cdr part is a value of readcharfun given to
377 readbyte
= readbyte_from_string
;
378 if (EQ (XCDR (readcharfun
), Qget_emacs_mule_file_char
))
379 emacs_mule_encoding
= 1;
383 if (EQ (readcharfun
, Qget_emacs_mule_file_char
))
385 readbyte
= readbyte_from_file
;
386 emacs_mule_encoding
= 1;
390 tem
= call0 (readcharfun
);
397 if (unread_char
>= 0)
403 c
= (*readbyte
) (-1, readcharfun
);
404 if (c
< 0 || load_each_byte
)
408 if (ASCII_BYTE_P (c
))
410 if (emacs_mule_encoding
)
411 return read_emacs_mule_char (c
, readbyte
, readcharfun
);
414 len
= BYTES_BY_CHAR_HEAD (c
);
417 c
= (*readbyte
) (-1, readcharfun
);
418 if (c
< 0 || ! TRAILING_CODE_P (c
))
421 (*readbyte
) (buf
[i
], readcharfun
);
422 return BYTE8_TO_CHAR (buf
[0]);
426 return STRING_CHAR (buf
, i
);
429 /* Unread the character C in the way appropriate for the stream READCHARFUN.
430 If the stream is a user function, call it with the char as argument. */
433 unreadchar (readcharfun
, c
)
434 Lisp_Object readcharfun
;
439 /* Don't back up the pointer if we're unreading the end-of-input mark,
440 since readchar didn't advance it when we read it. */
442 else if (BUFFERP (readcharfun
))
444 struct buffer
*b
= XBUFFER (readcharfun
);
445 int bytepos
= BUF_PT_BYTE (b
);
448 if (! NILP (b
->enable_multibyte_characters
))
449 BUF_DEC_POS (b
, bytepos
);
453 BUF_PT_BYTE (b
) = bytepos
;
455 else if (MARKERP (readcharfun
))
457 struct buffer
*b
= XMARKER (readcharfun
)->buffer
;
458 int bytepos
= XMARKER (readcharfun
)->bytepos
;
460 XMARKER (readcharfun
)->charpos
--;
461 if (! NILP (b
->enable_multibyte_characters
))
462 BUF_DEC_POS (b
, bytepos
);
466 XMARKER (readcharfun
)->bytepos
= bytepos
;
468 else if (STRINGP (readcharfun
))
470 read_from_string_index
--;
471 read_from_string_index_byte
472 = string_char_to_byte (readcharfun
, read_from_string_index
);
474 else if (CONSP (readcharfun
))
478 else if (EQ (readcharfun
, Qlambda
))
482 else if (EQ (readcharfun
, Qget_file_char
)
483 || EQ (readcharfun
, Qget_emacs_mule_file_char
))
488 ungetc (c
, instream
);
495 call1 (readcharfun
, make_number (c
));
499 readbyte_for_lambda (c
, readcharfun
)
501 Lisp_Object readcharfun
;
503 return read_bytecode_char (c
>= 0);
508 readbyte_from_file (c
, readcharfun
)
510 Lisp_Object readcharfun
;
515 ungetc (c
, instream
);
524 /* Interrupted reads have been observed while reading over the network */
525 while (c
== EOF
&& ferror (instream
) && errno
== EINTR
)
537 return (c
== EOF
? -1 : c
);
541 readbyte_from_string (c
, readcharfun
)
543 Lisp_Object readcharfun
;
545 Lisp_Object string
= XCAR (readcharfun
);
549 read_from_string_index
--;
550 read_from_string_index_byte
551 = string_char_to_byte (string
, read_from_string_index
);
554 if (read_from_string_index
>= read_from_string_limit
)
557 FETCH_STRING_CHAR_ADVANCE (c
, string
,
558 read_from_string_index
,
559 read_from_string_index_byte
);
564 /* Read one non-ASCII character from INSTREAM. The character is
565 encoded in `emacs-mule' and the first byte is already read in
568 extern char emacs_mule_bytes
[256];
571 read_emacs_mule_char (c
, readbyte
, readcharfun
)
573 int (*readbyte
) P_ ((int, Lisp_Object
));
574 Lisp_Object readcharfun
;
576 /* Emacs-mule coding uses at most 4-byte for one character. */
577 unsigned char buf
[4];
578 int len
= emacs_mule_bytes
[c
];
579 struct charset
*charset
;
584 /* C is not a valid leading-code of `emacs-mule'. */
585 return BYTE8_TO_CHAR (c
);
591 c
= (*readbyte
) (-1, readcharfun
);
595 (*readbyte
) (buf
[i
], readcharfun
);
596 return BYTE8_TO_CHAR (buf
[0]);
603 charset
= emacs_mule_charset
[buf
[0]];
604 code
= buf
[1] & 0x7F;
608 if (buf
[0] == EMACS_MULE_LEADING_CODE_PRIVATE_11
609 || buf
[0] == EMACS_MULE_LEADING_CODE_PRIVATE_12
)
611 charset
= emacs_mule_charset
[buf
[1]];
612 code
= buf
[2] & 0x7F;
616 charset
= emacs_mule_charset
[buf
[0]];
617 code
= ((buf
[1] << 8) | buf
[2]) & 0x7F7F;
622 charset
= emacs_mule_charset
[buf
[1]];
623 code
= ((buf
[2] << 8) | buf
[3]) & 0x7F7F;
625 c
= DECODE_CHAR (charset
, code
);
627 Fsignal (Qinvalid_read_syntax
,
628 Fcons (build_string ("invalid multibyte form"), Qnil
));
633 static Lisp_Object read_internal_start
P_ ((Lisp_Object
, Lisp_Object
,
635 static Lisp_Object read0
P_ ((Lisp_Object
));
636 static Lisp_Object read1
P_ ((Lisp_Object
, int *, int));
638 static Lisp_Object read_list
P_ ((int, Lisp_Object
));
639 static Lisp_Object read_vector
P_ ((Lisp_Object
, int));
641 static Lisp_Object substitute_object_recurse
P_ ((Lisp_Object
, Lisp_Object
,
643 static void substitute_object_in_subtree
P_ ((Lisp_Object
,
645 static void substitute_in_interval
P_ ((INTERVAL
, Lisp_Object
));
648 /* Get a character from the tty. */
650 /* Read input events until we get one that's acceptable for our purposes.
652 If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed
653 until we get a character we like, and then stuffed into
656 If ASCII_REQUIRED is non-zero, we check function key events to see
657 if the unmodified version of the symbol has a Qascii_character
658 property, and use that character, if present.
660 If ERROR_NONASCII is non-zero, we signal an error if the input we
661 get isn't an ASCII character with modifiers. If it's zero but
662 ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII
665 If INPUT_METHOD is nonzero, we invoke the current input method
666 if the character warrants that.
668 If SECONDS is a number, we wait that many seconds for input, and
669 return Qnil if no input arrives within that time. */
672 read_filtered_event (no_switch_frame
, ascii_required
, error_nonascii
,
673 input_method
, seconds
)
674 int no_switch_frame
, ascii_required
, error_nonascii
, input_method
;
677 Lisp_Object val
, delayed_switch_frame
;
680 #ifdef HAVE_WINDOW_SYSTEM
681 if (display_hourglass_p
)
685 delayed_switch_frame
= Qnil
;
687 /* Compute timeout. */
688 if (NUMBERP (seconds
))
690 EMACS_TIME wait_time
;
692 double duration
= extract_float (seconds
);
694 sec
= (int) duration
;
695 usec
= (duration
- sec
) * 1000000;
696 EMACS_GET_TIME (end_time
);
697 EMACS_SET_SECS_USECS (wait_time
, sec
, usec
);
698 EMACS_ADD_TIME (end_time
, end_time
, wait_time
);
701 /* Read until we get an acceptable event. */
704 val
= read_char (0, 0, 0, (input_method
? Qnil
: Qt
), 0,
705 NUMBERP (seconds
) ? &end_time
: NULL
);
706 while (INTEGERP (val
) && XINT (val
) == -2); /* wrong_kboard_jmpbuf */
711 /* switch-frame events are put off until after the next ASCII
712 character. This is better than signaling an error just because
713 the last characters were typed to a separate minibuffer frame,
714 for example. Eventually, some code which can deal with
715 switch-frame events will read it and process it. */
717 && EVENT_HAS_PARAMETERS (val
)
718 && EQ (EVENT_HEAD_KIND (EVENT_HEAD (val
)), Qswitch_frame
))
720 delayed_switch_frame
= val
;
724 if (ascii_required
&& !(NUMBERP (seconds
) && NILP (val
)))
726 /* Convert certain symbols to their ASCII equivalents. */
729 Lisp_Object tem
, tem1
;
730 tem
= Fget (val
, Qevent_symbol_element_mask
);
733 tem1
= Fget (Fcar (tem
), Qascii_character
);
734 /* Merge this symbol's modifier bits
735 with the ASCII equivalent of its basic code. */
737 XSETFASTINT (val
, XINT (tem1
) | XINT (Fcar (Fcdr (tem
))));
741 /* If we don't have a character now, deal with it appropriately. */
746 Vunread_command_events
= Fcons (val
, Qnil
);
747 error ("Non-character input-event");
754 if (! NILP (delayed_switch_frame
))
755 unread_switch_frame
= delayed_switch_frame
;
759 #ifdef HAVE_WINDOW_SYSTEM
760 if (display_hourglass_p
)
769 DEFUN ("read-char", Fread_char
, Sread_char
, 0, 3, 0,
770 doc
: /* Read a character from the command input (keyboard or macro).
771 It is returned as a number.
772 If the character has modifiers, they are resolved and reflected to the
773 character code if possible (e.g. C-SPC -> 0).
775 If the user generates an event which is not a character (i.e. a mouse
776 click or function key event), `read-char' signals an error. As an
777 exception, switch-frame events are put off until non-character events
779 If you want to read non-character events, or ignore them, call
780 `read-event' or `read-char-exclusive' instead.
782 If the optional argument PROMPT is non-nil, display that as a prompt.
783 If the optional argument INHERIT-INPUT-METHOD is non-nil and some
784 input method is turned on in the current buffer, that input method
785 is used for reading a character.
786 If the optional argument SECONDS is non-nil, it should be a number
787 specifying the maximum number of seconds to wait for input. If no
788 input arrives in that time, return nil. SECONDS may be a
789 floating-point value. */)
790 (prompt
, inherit_input_method
, seconds
)
791 Lisp_Object prompt
, inherit_input_method
, seconds
;
797 message_with_string ("%s", prompt
, 0);
798 val
= read_filtered_event (1, 1, 1, ! NILP (inherit_input_method
), seconds
);
800 return make_number (char_resolve_modifier_mask (c
));
803 DEFUN ("read-event", Fread_event
, Sread_event
, 0, 3, 0,
804 doc
: /* Read an event object from the input stream.
805 If the optional argument PROMPT is non-nil, display that as a prompt.
806 If the optional argument INHERIT-INPUT-METHOD is non-nil and some
807 input method is turned on in the current buffer, that input method
808 is used for reading a character.
809 If the optional argument SECONDS is non-nil, it should be a number
810 specifying the maximum number of seconds to wait for input. If no
811 input arrives in that time, return nil. SECONDS may be a
812 floating-point value. */)
813 (prompt
, inherit_input_method
, seconds
)
814 Lisp_Object prompt
, inherit_input_method
, seconds
;
817 message_with_string ("%s", prompt
, 0);
818 return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method
), seconds
);
821 DEFUN ("read-char-exclusive", Fread_char_exclusive
, Sread_char_exclusive
, 0, 3, 0,
822 doc
: /* Read a character from the command input (keyboard or macro).
823 It is returned as a number. Non-character events are ignored.
824 If the character has modifiers, they are resolved and reflected to the
825 character code if possible (e.g. C-SPC -> 0).
827 If the optional argument PROMPT is non-nil, display that as a prompt.
828 If the optional argument INHERIT-INPUT-METHOD is non-nil and some
829 input method is turned on in the current buffer, that input method
830 is used for reading a character.
831 If the optional argument SECONDS is non-nil, it should be a number
832 specifying the maximum number of seconds to wait for input. If no
833 input arrives in that time, return nil. SECONDS may be a
834 floating-point value. */)
835 (prompt
, inherit_input_method
, seconds
)
836 Lisp_Object prompt
, inherit_input_method
, seconds
;
842 message_with_string ("%s", prompt
, 0);
843 val
= read_filtered_event (1, 1, 0, ! NILP (inherit_input_method
), seconds
);
845 return make_number (char_resolve_modifier_mask (c
));
848 DEFUN ("get-file-char", Fget_file_char
, Sget_file_char
, 0, 0, 0,
849 doc
: /* Don't use this yourself. */)
852 register Lisp_Object val
;
854 XSETINT (val
, getc (instream
));
861 /* Value is a version number of byte compiled code if the file
862 associated with file descriptor FD is a compiled Lisp file that's
863 safe to load. Only files compiled with Emacs are safe to load.
864 Files compiled with XEmacs can lead to a crash in Fbyte_code
865 because of an incompatible change in the byte compiler. */
876 /* Read the first few bytes from the file, and look for a line
877 specifying the byte compiler version used. */
878 nbytes
= emacs_read (fd
, buf
, sizeof buf
- 1);
883 /* Skip to the next newline, skipping over the initial `ELC'
884 with NUL bytes following it, but note the version. */
885 for (i
= 0; i
< nbytes
&& buf
[i
] != '\n'; ++i
)
890 || fast_c_string_match_ignore_case (Vbytecomp_version_regexp
,
897 lseek (fd
, 0, SEEK_SET
);
902 /* Callback for record_unwind_protect. Restore the old load list OLD,
903 after loading a file successfully. */
906 record_load_unwind (old
)
909 return Vloads_in_progress
= old
;
912 /* This handler function is used via internal_condition_case_1. */
915 load_error_handler (data
)
922 load_warn_old_style_backquotes (file
)
925 if (!NILP (Vold_style_backquotes
))
928 args
[0] = build_string ("Loading `%s': old-style backquotes detected!");
935 DEFUN ("get-load-suffixes", Fget_load_suffixes
, Sget_load_suffixes
, 0, 0, 0,
936 doc
: /* Return the suffixes that `load' should try if a suffix is \
938 This uses the variables `load-suffixes' and `load-file-rep-suffixes'. */)
941 Lisp_Object lst
= Qnil
, suffixes
= Vload_suffixes
, suffix
, ext
;
942 while (CONSP (suffixes
))
944 Lisp_Object exts
= Vload_file_rep_suffixes
;
945 suffix
= XCAR (suffixes
);
946 suffixes
= XCDR (suffixes
);
951 lst
= Fcons (concat2 (suffix
, ext
), lst
);
954 return Fnreverse (lst
);
957 DEFUN ("load", Fload
, Sload
, 1, 5, 0,
958 doc
: /* Execute a file of Lisp code named FILE.
959 First try FILE with `.elc' appended, then try with `.el',
960 then try FILE unmodified (the exact suffixes in the exact order are
961 determined by `load-suffixes'). Environment variable references in
962 FILE are replaced with their values by calling `substitute-in-file-name'.
963 This function searches the directories in `load-path'.
965 If optional second arg NOERROR is non-nil,
966 report no error if FILE doesn't exist.
967 Print messages at start and end of loading unless
968 optional third arg NOMESSAGE is non-nil.
969 If optional fourth arg NOSUFFIX is non-nil, don't try adding
970 suffixes `.elc' or `.el' to the specified name FILE.
971 If optional fifth arg MUST-SUFFIX is non-nil, insist on
972 the suffix `.elc' or `.el'; don't accept just FILE unless
973 it ends in one of those suffixes or includes a directory name.
975 If this function fails to find a file, it may look for different
976 representations of that file before trying another file.
977 It does so by adding the non-empty suffixes in `load-file-rep-suffixes'
978 to the file name. Emacs uses this feature mainly to find compressed
979 versions of files when Auto Compression mode is enabled.
981 The exact suffixes that this function tries out, in the exact order,
982 are given by the value of the variable `load-file-rep-suffixes' if
983 NOSUFFIX is non-nil and by the return value of the function
984 `get-load-suffixes' if MUST-SUFFIX is non-nil. If both NOSUFFIX and
985 MUST-SUFFIX are nil, this function first tries out the latter suffixes
988 Loading a file records its definitions, and its `provide' and
989 `require' calls, in an element of `load-history' whose
990 car is the file name loaded. See `load-history'.
992 Return t if the file exists and loads successfully. */)
993 (file
, noerror
, nomessage
, nosuffix
, must_suffix
)
994 Lisp_Object file
, noerror
, nomessage
, nosuffix
, must_suffix
;
996 register FILE *stream
;
997 register int fd
= -1;
998 int count
= SPECPDL_INDEX ();
999 struct gcpro gcpro1
, gcpro2
, gcpro3
;
1000 Lisp_Object found
, efound
, hist_file_name
;
1001 /* 1 means we printed the ".el is newer" message. */
1003 /* 1 means we are loading a compiled file. */
1005 Lisp_Object handler
;
1015 CHECK_STRING (file
);
1017 /* If file name is magic, call the handler. */
1018 /* This shouldn't be necessary any more now that `openp' handles it right.
1019 handler = Ffind_file_name_handler (file, Qload);
1020 if (!NILP (handler))
1021 return call5 (handler, Qload, file, noerror, nomessage, nosuffix); */
1023 /* Do this after the handler to avoid
1024 the need to gcpro noerror, nomessage and nosuffix.
1025 (Below here, we care only whether they are nil or not.)
1026 The presence of this call is the result of a historical accident:
1027 it used to be in every file-operation and when it got removed
1028 everywhere, it accidentally stayed here. Since then, enough people
1029 supposedly have things like (load "$PROJECT/foo.el") in their .emacs
1030 that it seemed risky to remove. */
1031 if (! NILP (noerror
))
1033 file
= internal_condition_case_1 (Fsubstitute_in_file_name
, file
,
1034 Qt
, load_error_handler
);
1039 file
= Fsubstitute_in_file_name (file
);
1042 /* Avoid weird lossage with null string as arg,
1043 since it would try to load a directory as a Lisp file */
1044 if (SCHARS (file
) > 0)
1046 int size
= SBYTES (file
);
1049 GCPRO2 (file
, found
);
1051 if (! NILP (must_suffix
))
1053 /* Don't insist on adding a suffix if FILE already ends with one. */
1055 && !strcmp (SDATA (file
) + size
- 3, ".el"))
1058 && !strcmp (SDATA (file
) + size
- 4, ".elc"))
1060 /* Don't insist on adding a suffix
1061 if the argument includes a directory name. */
1062 else if (! NILP (Ffile_name_directory (file
)))
1066 fd
= openp (Vload_path
, file
,
1067 (!NILP (nosuffix
) ? Qnil
1068 : !NILP (must_suffix
) ? Fget_load_suffixes ()
1069 : Fappend (2, (tmp
[0] = Fget_load_suffixes (),
1070 tmp
[1] = Vload_file_rep_suffixes
,
1079 xsignal2 (Qfile_error
, build_string ("Cannot open load file"), file
);
1083 /* Tell startup.el whether or not we found the user's init file. */
1084 if (EQ (Qt
, Vuser_init_file
))
1085 Vuser_init_file
= found
;
1087 /* If FD is -2, that means openp found a magic file. */
1090 if (NILP (Fequal (found
, file
)))
1091 /* If FOUND is a different file name from FILE,
1092 find its handler even if we have already inhibited
1093 the `load' operation on FILE. */
1094 handler
= Ffind_file_name_handler (found
, Qt
);
1096 handler
= Ffind_file_name_handler (found
, Qload
);
1097 if (! NILP (handler
))
1098 return call5 (handler
, Qload
, found
, noerror
, nomessage
, Qt
);
1101 /* Check if we're stuck in a recursive load cycle.
1103 2000-09-21: It's not possible to just check for the file loaded
1104 being a member of Vloads_in_progress. This fails because of the
1105 way the byte compiler currently works; `provide's are not
1106 evaluted, see font-lock.el/jit-lock.el as an example. This
1107 leads to a certain amount of ``normal'' recursion.
1109 Also, just loading a file recursively is not always an error in
1110 the general case; the second load may do something different. */
1114 for (tem
= Vloads_in_progress
; CONSP (tem
); tem
= XCDR (tem
))
1115 if (!NILP (Fequal (found
, XCAR (tem
))))
1121 signal_error ("Recursive load", Fcons (found
, Vloads_in_progress
));
1123 record_unwind_protect (record_load_unwind
, Vloads_in_progress
);
1124 Vloads_in_progress
= Fcons (found
, Vloads_in_progress
);
1127 /* Get the name for load-history. */
1128 hist_file_name
= (! NILP (Vpurify_flag
)
1129 ? Fconcat (2, (tmp
[0] = Ffile_name_directory (file
),
1130 tmp
[1] = Ffile_name_nondirectory (found
),
1136 /* Check for the presence of old-style quotes and warn about them. */
1137 specbind (Qold_style_backquotes
, Qnil
);
1138 record_unwind_protect (load_warn_old_style_backquotes
, file
);
1140 if (!bcmp (SDATA (found
) + SBYTES (found
) - 4,
1142 || (version
= safe_to_load_p (fd
)) > 0)
1143 /* Load .elc files directly, but not when they are
1144 remote and have no handler! */
1151 GCPRO3 (file
, found
, hist_file_name
);
1154 && ! (version
= safe_to_load_p (fd
)))
1157 if (!load_dangerous_libraries
)
1161 error ("File `%s' was not compiled in Emacs",
1164 else if (!NILP (nomessage
))
1165 message_with_string ("File `%s' not compiled in Emacs", found
, 1);
1170 efound
= ENCODE_FILE (found
);
1175 stat ((char *)SDATA (efound
), &s1
);
1176 SSET (efound
, SBYTES (efound
) - 1, 0);
1177 result
= stat ((char *)SDATA (efound
), &s2
);
1178 SSET (efound
, SBYTES (efound
) - 1, 'c');
1180 if (result
>= 0 && (unsigned) s1
.st_mtime
< (unsigned) s2
.st_mtime
)
1182 /* Make the progress messages mention that source is newer. */
1185 /* If we won't print another message, mention this anyway. */
1186 if (!NILP (nomessage
))
1188 Lisp_Object msg_file
;
1189 msg_file
= Fsubstring (found
, make_number (0), make_number (-1));
1190 message_with_string ("Source file `%s' newer than byte-compiled file",
1199 /* We are loading a source file (*.el). */
1200 if (!NILP (Vload_source_file_function
))
1206 val
= call4 (Vload_source_file_function
, found
, hist_file_name
,
1207 NILP (noerror
) ? Qnil
: Qt
,
1208 NILP (nomessage
) ? Qnil
: Qt
);
1209 return unbind_to (count
, val
);
1213 GCPRO3 (file
, found
, hist_file_name
);
1217 efound
= ENCODE_FILE (found
);
1218 stream
= fopen ((char *) SDATA (efound
), fmode
);
1219 #else /* not WINDOWSNT */
1220 stream
= fdopen (fd
, fmode
);
1221 #endif /* not WINDOWSNT */
1225 error ("Failure to create stdio stream for %s", SDATA (file
));
1228 if (! NILP (Vpurify_flag
))
1229 Vpreloaded_file_list
= Fcons (file
, Vpreloaded_file_list
);
1231 if (NILP (nomessage
))
1234 message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...",
1237 message_with_string ("Loading %s (source)...", file
, 1);
1239 message_with_string ("Loading %s (compiled; note, source file is newer)...",
1241 else /* The typical case; compiled file newer than source file. */
1242 message_with_string ("Loading %s...", file
, 1);
1245 record_unwind_protect (load_unwind
, make_save_value (stream
, 0));
1246 record_unwind_protect (load_descriptor_unwind
, load_descriptor_list
);
1247 specbind (Qload_file_name
, found
);
1248 specbind (Qinhibit_file_name_operation
, Qnil
);
1249 load_descriptor_list
1250 = Fcons (make_number (fileno (stream
)), load_descriptor_list
);
1252 if (! version
|| version
>= 22)
1253 readevalloop (Qget_file_char
, stream
, hist_file_name
,
1254 Feval
, 0, Qnil
, Qnil
, Qnil
, Qnil
);
1257 /* We can't handle a file which was compiled with
1258 byte-compile-dynamic by older version of Emacs. */
1259 specbind (Qload_force_doc_strings
, Qt
);
1260 readevalloop (Qget_emacs_mule_file_char
, stream
, hist_file_name
, Feval
,
1261 0, Qnil
, Qnil
, Qnil
, Qnil
);
1263 unbind_to (count
, Qnil
);
1265 /* Run any eval-after-load forms for this file */
1266 if (NILP (Vpurify_flag
)
1267 && (!NILP (Ffboundp (Qdo_after_load_evaluation
))))
1268 call1 (Qdo_after_load_evaluation
, hist_file_name
) ;
1272 xfree (saved_doc_string
);
1273 saved_doc_string
= 0;
1274 saved_doc_string_size
= 0;
1276 xfree (prev_saved_doc_string
);
1277 prev_saved_doc_string
= 0;
1278 prev_saved_doc_string_size
= 0;
1280 if (!noninteractive
&& NILP (nomessage
))
1283 message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...done",
1286 message_with_string ("Loading %s (source)...done", file
, 1);
1288 message_with_string ("Loading %s (compiled; note, source file is newer)...done",
1290 else /* The typical case; compiled file newer than source file. */
1291 message_with_string ("Loading %s...done", file
, 1);
1294 if (!NILP (Fequal (build_string ("obsolete"),
1295 Ffile_name_nondirectory
1296 (Fdirectory_file_name (Ffile_name_directory (found
))))))
1297 message_with_string ("Package %s is obsolete", file
, 1);
1303 load_unwind (arg
) /* used as unwind-protect function in load */
1306 FILE *stream
= (FILE *) XSAVE_VALUE (arg
)->pointer
;
1313 if (--load_in_progress
< 0) load_in_progress
= 0;
1318 load_descriptor_unwind (oldlist
)
1319 Lisp_Object oldlist
;
1321 load_descriptor_list
= oldlist
;
1325 /* Close all descriptors in use for Floads.
1326 This is used when starting a subprocess. */
1333 for (tail
= load_descriptor_list
; CONSP (tail
); tail
= XCDR (tail
))
1334 emacs_close (XFASTINT (XCAR (tail
)));
1339 complete_filename_p (pathname
)
1340 Lisp_Object pathname
;
1342 register const unsigned char *s
= SDATA (pathname
);
1343 return (IS_DIRECTORY_SEP (s
[0])
1344 || (SCHARS (pathname
) > 2
1345 && IS_DEVICE_SEP (s
[1]) && IS_DIRECTORY_SEP (s
[2])));
1348 DEFUN ("locate-file-internal", Flocate_file_internal
, Slocate_file_internal
, 2, 4, 0,
1349 doc
: /* Search for FILENAME through PATH.
1350 Returns the file's name in absolute form, or nil if not found.
1351 If SUFFIXES is non-nil, it should be a list of suffixes to append to
1352 file name when searching.
1353 If non-nil, PREDICATE is used instead of `file-readable-p'.
1354 PREDICATE can also be an integer to pass to the access(2) function,
1355 in which case file-name-handlers are ignored. */)
1356 (filename
, path
, suffixes
, predicate
)
1357 Lisp_Object filename
, path
, suffixes
, predicate
;
1360 int fd
= openp (path
, filename
, suffixes
, &file
, predicate
);
1361 if (NILP (predicate
) && fd
> 0)
1367 /* Search for a file whose name is STR, looking in directories
1368 in the Lisp list PATH, and trying suffixes from SUFFIX.
1369 On success, returns a file descriptor. On failure, returns -1.
1371 SUFFIXES is a list of strings containing possible suffixes.
1372 The empty suffix is automatically added if the list is empty.
1374 PREDICATE non-nil means don't open the files,
1375 just look for one that satisfies the predicate. In this case,
1376 returns 1 on success. The predicate can be a lisp function or
1377 an integer to pass to `access' (in which case file-name-handlers
1380 If STOREPTR is nonzero, it points to a slot where the name of
1381 the file actually found should be stored as a Lisp string.
1382 nil is stored there on failure.
1384 If the file we find is remote, return -2
1385 but store the found remote file name in *STOREPTR. */
1388 openp (path
, str
, suffixes
, storeptr
, predicate
)
1389 Lisp_Object path
, str
;
1390 Lisp_Object suffixes
;
1391 Lisp_Object
*storeptr
;
1392 Lisp_Object predicate
;
1397 register char *fn
= buf
;
1400 Lisp_Object filename
;
1402 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
, gcpro5
, gcpro6
;
1403 Lisp_Object string
, tail
, encoded_fn
;
1404 int max_suffix_len
= 0;
1408 for (tail
= suffixes
; CONSP (tail
); tail
= XCDR (tail
))
1410 CHECK_STRING_CAR (tail
);
1411 max_suffix_len
= max (max_suffix_len
,
1412 SBYTES (XCAR (tail
)));
1415 string
= filename
= encoded_fn
= Qnil
;
1416 GCPRO6 (str
, string
, filename
, path
, suffixes
, encoded_fn
);
1421 if (complete_filename_p (str
))
1424 for (; CONSP (path
); path
= XCDR (path
))
1426 filename
= Fexpand_file_name (str
, XCAR (path
));
1427 if (!complete_filename_p (filename
))
1428 /* If there are non-absolute elts in PATH (eg ".") */
1429 /* Of course, this could conceivably lose if luser sets
1430 default-directory to be something non-absolute... */
1432 filename
= Fexpand_file_name (filename
, current_buffer
->directory
);
1433 if (!complete_filename_p (filename
))
1434 /* Give up on this path element! */
1438 /* Calculate maximum size of any filename made from
1439 this path element/specified file name and any possible suffix. */
1440 want_size
= max_suffix_len
+ SBYTES (filename
) + 1;
1441 if (fn_size
< want_size
)
1442 fn
= (char *) alloca (fn_size
= 100 + want_size
);
1444 /* Loop over suffixes. */
1445 for (tail
= NILP (suffixes
) ? Fcons (empty_unibyte_string
, Qnil
) : suffixes
;
1446 CONSP (tail
); tail
= XCDR (tail
))
1448 int lsuffix
= SBYTES (XCAR (tail
));
1449 Lisp_Object handler
;
1452 /* Concatenate path element/specified name with the suffix.
1453 If the directory starts with /:, remove that. */
1454 if (SCHARS (filename
) > 2
1455 && SREF (filename
, 0) == '/'
1456 && SREF (filename
, 1) == ':')
1458 strncpy (fn
, SDATA (filename
) + 2,
1459 SBYTES (filename
) - 2);
1460 fn
[SBYTES (filename
) - 2] = 0;
1464 strncpy (fn
, SDATA (filename
),
1466 fn
[SBYTES (filename
)] = 0;
1469 if (lsuffix
!= 0) /* Bug happens on CCI if lsuffix is 0. */
1470 strncat (fn
, SDATA (XCAR (tail
)), lsuffix
);
1472 /* Check that the file exists and is not a directory. */
1473 /* We used to only check for handlers on non-absolute file names:
1477 handler = Ffind_file_name_handler (filename, Qfile_exists_p);
1478 It's not clear why that was the case and it breaks things like
1479 (load "/bar.el") where the file is actually "/bar.el.gz". */
1480 string
= build_string (fn
);
1481 handler
= Ffind_file_name_handler (string
, Qfile_exists_p
);
1482 if ((!NILP (handler
) || !NILP (predicate
)) && !NATNUMP (predicate
))
1484 if (NILP (predicate
))
1485 exists
= !NILP (Ffile_readable_p (string
));
1487 exists
= !NILP (call1 (predicate
, string
));
1488 if (exists
&& !NILP (Ffile_directory_p (string
)))
1493 /* We succeeded; return this descriptor and filename. */
1504 encoded_fn
= ENCODE_FILE (string
);
1505 pfn
= SDATA (encoded_fn
);
1506 exists
= (stat (pfn
, &st
) >= 0
1507 && (st
.st_mode
& S_IFMT
) != S_IFDIR
);
1510 /* Check that we can access or open it. */
1511 if (NATNUMP (predicate
))
1512 fd
= (access (pfn
, XFASTINT (predicate
)) == 0) ? 1 : -1;
1514 fd
= emacs_open (pfn
, O_RDONLY
, 0);
1518 /* We succeeded; return this descriptor and filename. */
1536 /* Merge the list we've accumulated of globals from the current input source
1537 into the load_history variable. The details depend on whether
1538 the source has an associated file name or not.
1540 FILENAME is the file name that we are loading from.
1541 ENTIRE is 1 if loading that entire file, 0 if evaluating part of it. */
1544 build_load_history (filename
, entire
)
1545 Lisp_Object filename
;
1548 register Lisp_Object tail
, prev
, newelt
;
1549 register Lisp_Object tem
, tem2
;
1550 register int foundit
= 0;
1552 tail
= Vload_history
;
1555 while (CONSP (tail
))
1559 /* Find the feature's previous assoc list... */
1560 if (!NILP (Fequal (filename
, Fcar (tem
))))
1564 /* If we're loading the entire file, remove old data. */
1568 Vload_history
= XCDR (tail
);
1570 Fsetcdr (prev
, XCDR (tail
));
1573 /* Otherwise, cons on new symbols that are not already members. */
1576 tem2
= Vcurrent_load_list
;
1578 while (CONSP (tem2
))
1580 newelt
= XCAR (tem2
);
1582 if (NILP (Fmember (newelt
, tem
)))
1583 Fsetcar (tail
, Fcons (XCAR (tem
),
1584 Fcons (newelt
, XCDR (tem
))));
1597 /* If we're loading an entire file, cons the new assoc onto the
1598 front of load-history, the most-recently-loaded position. Also
1599 do this if we didn't find an existing member for the file. */
1600 if (entire
|| !foundit
)
1601 Vload_history
= Fcons (Fnreverse (Vcurrent_load_list
),
1606 unreadpure (junk
) /* Used as unwind-protect function in readevalloop */
1614 readevalloop_1 (old
)
1617 load_convert_to_unibyte
= ! NILP (old
);
1621 /* Signal an `end-of-file' error, if possible with file name
1625 end_of_file_error ()
1627 if (STRINGP (Vload_file_name
))
1628 xsignal1 (Qend_of_file
, Vload_file_name
);
1630 xsignal0 (Qend_of_file
);
1633 /* UNIBYTE specifies how to set load_convert_to_unibyte
1634 for this invocation.
1635 READFUN, if non-nil, is used instead of `read'.
1637 START, END specify region to read in current buffer (from eval-region).
1638 If the input is not from a buffer, they must be nil. */
1641 readevalloop (readcharfun
, stream
, sourcename
, evalfun
,
1642 printflag
, unibyte
, readfun
, start
, end
)
1643 Lisp_Object readcharfun
;
1645 Lisp_Object sourcename
;
1646 Lisp_Object (*evalfun
) ();
1648 Lisp_Object unibyte
, readfun
;
1649 Lisp_Object start
, end
;
1652 register Lisp_Object val
;
1653 int count
= SPECPDL_INDEX ();
1654 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1655 struct buffer
*b
= 0;
1656 int continue_reading_p
;
1657 /* Nonzero if reading an entire buffer. */
1658 int whole_buffer
= 0;
1659 /* 1 on the first time around. */
1662 if (MARKERP (readcharfun
))
1665 start
= readcharfun
;
1668 if (BUFFERP (readcharfun
))
1669 b
= XBUFFER (readcharfun
);
1670 else if (MARKERP (readcharfun
))
1671 b
= XMARKER (readcharfun
)->buffer
;
1673 /* We assume START is nil when input is not from a buffer. */
1674 if (! NILP (start
) && !b
)
1677 specbind (Qstandard_input
, readcharfun
); /* GCPROs readcharfun. */
1678 specbind (Qcurrent_load_list
, Qnil
);
1679 record_unwind_protect (readevalloop_1
, load_convert_to_unibyte
? Qt
: Qnil
);
1680 load_convert_to_unibyte
= !NILP (unibyte
);
1682 GCPRO4 (sourcename
, readfun
, start
, end
);
1684 /* Try to ensure sourcename is a truename, except whilst preloading. */
1685 if (NILP (Vpurify_flag
)
1686 && !NILP (sourcename
) && !NILP (Ffile_name_absolute_p (sourcename
))
1687 && !NILP (Ffboundp (Qfile_truename
)))
1688 sourcename
= call1 (Qfile_truename
, sourcename
) ;
1690 LOADHIST_ATTACH (sourcename
);
1692 continue_reading_p
= 1;
1693 while (continue_reading_p
)
1695 int count1
= SPECPDL_INDEX ();
1697 if (b
!= 0 && NILP (b
->name
))
1698 error ("Reading from killed buffer");
1702 /* Switch to the buffer we are reading from. */
1703 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1704 set_buffer_internal (b
);
1706 /* Save point in it. */
1707 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1708 /* Save ZV in it. */
1709 record_unwind_protect (save_restriction_restore
, save_restriction_save ());
1710 /* Those get unbound after we read one expression. */
1712 /* Set point and ZV around stuff to be read. */
1715 Fnarrow_to_region (make_number (BEGV
), end
);
1717 /* Just for cleanliness, convert END to a marker
1718 if it is an integer. */
1720 end
= Fpoint_max_marker ();
1723 /* On the first cycle, we can easily test here
1724 whether we are reading the whole buffer. */
1725 if (b
&& first_sexp
)
1726 whole_buffer
= (PT
== BEG
&& ZV
== Z
);
1733 while ((c
= READCHAR
) != '\n' && c
!= -1);
1738 unbind_to (count1
, Qnil
);
1742 /* Ignore whitespace here, so we can detect eof. */
1743 if (c
== ' ' || c
== '\t' || c
== '\n' || c
== '\f' || c
== '\r'
1744 || c
== 0x8a0) /* NBSP */
1747 if (!NILP (Vpurify_flag
) && c
== '(')
1749 record_unwind_protect (unreadpure
, Qnil
);
1750 val
= read_list (-1, readcharfun
);
1755 read_objects
= Qnil
;
1756 if (!NILP (readfun
))
1758 val
= call1 (readfun
, readcharfun
);
1760 /* If READCHARFUN has set point to ZV, we should
1761 stop reading, even if the form read sets point
1762 to a different value when evaluated. */
1763 if (BUFFERP (readcharfun
))
1765 struct buffer
*b
= XBUFFER (readcharfun
);
1766 if (BUF_PT (b
) == BUF_ZV (b
))
1767 continue_reading_p
= 0;
1770 else if (! NILP (Vload_read_function
))
1771 val
= call1 (Vload_read_function
, readcharfun
);
1773 val
= read_internal_start (readcharfun
, Qnil
, Qnil
);
1776 if (!NILP (start
) && continue_reading_p
)
1777 start
= Fpoint_marker ();
1779 /* Restore saved point and BEGV. */
1780 unbind_to (count1
, Qnil
);
1782 /* Now eval what we just read. */
1783 val
= (*evalfun
) (val
);
1787 Vvalues
= Fcons (val
, Vvalues
);
1788 if (EQ (Vstandard_output
, Qt
))
1797 build_load_history (sourcename
,
1798 stream
|| whole_buffer
);
1802 unbind_to (count
, Qnil
);
1805 DEFUN ("eval-buffer", Feval_buffer
, Seval_buffer
, 0, 5, "",
1806 doc
: /* Execute the current buffer as Lisp code.
1807 Programs can pass two arguments, BUFFER and PRINTFLAG.
1808 BUFFER is the buffer to evaluate (nil means use current buffer).
1809 PRINTFLAG controls printing of output:
1810 A value of nil means discard it; anything else is stream for print.
1812 If the optional third argument FILENAME is non-nil,
1813 it specifies the file name to use for `load-history'.
1814 The optional fourth argument UNIBYTE specifies `load-convert-to-unibyte'
1815 for this invocation.
1817 The optional fifth argument DO-ALLOW-PRINT, if non-nil, specifies that
1818 `print' and related functions should work normally even if PRINTFLAG is nil.
1820 This function preserves the position of point. */)
1821 (buffer
, printflag
, filename
, unibyte
, do_allow_print
)
1822 Lisp_Object buffer
, printflag
, filename
, unibyte
, do_allow_print
;
1824 int count
= SPECPDL_INDEX ();
1825 Lisp_Object tem
, buf
;
1828 buf
= Fcurrent_buffer ();
1830 buf
= Fget_buffer (buffer
);
1832 error ("No such buffer");
1834 if (NILP (printflag
) && NILP (do_allow_print
))
1839 if (NILP (filename
))
1840 filename
= XBUFFER (buf
)->filename
;
1842 specbind (Qeval_buffer_list
, Fcons (buf
, Veval_buffer_list
));
1843 specbind (Qstandard_output
, tem
);
1844 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1845 BUF_TEMP_SET_PT (XBUFFER (buf
), BUF_BEGV (XBUFFER (buf
)));
1846 readevalloop (buf
, 0, filename
, Feval
,
1847 !NILP (printflag
), unibyte
, Qnil
, Qnil
, Qnil
);
1848 unbind_to (count
, Qnil
);
1853 DEFUN ("eval-region", Feval_region
, Seval_region
, 2, 4, "r",
1854 doc
: /* Execute the region as Lisp code.
1855 When called from programs, expects two arguments,
1856 giving starting and ending indices in the current buffer
1857 of the text to be executed.
1858 Programs can pass third argument PRINTFLAG which controls output:
1859 A value of nil means discard it; anything else is stream for printing it.
1860 Also the fourth argument READ-FUNCTION, if non-nil, is used
1861 instead of `read' to read each expression. It gets one argument
1862 which is the input stream for reading characters.
1864 This function does not move point. */)
1865 (start
, end
, printflag
, read_function
)
1866 Lisp_Object start
, end
, printflag
, read_function
;
1868 int count
= SPECPDL_INDEX ();
1869 Lisp_Object tem
, cbuf
;
1871 cbuf
= Fcurrent_buffer ();
1873 if (NILP (printflag
))
1877 specbind (Qstandard_output
, tem
);
1878 specbind (Qeval_buffer_list
, Fcons (cbuf
, Veval_buffer_list
));
1880 /* readevalloop calls functions which check the type of start and end. */
1881 readevalloop (cbuf
, 0, XBUFFER (cbuf
)->filename
, Feval
,
1882 !NILP (printflag
), Qnil
, read_function
,
1885 return unbind_to (count
, Qnil
);
1889 DEFUN ("read", Fread
, Sread
, 0, 1, 0,
1890 doc
: /* Read one Lisp expression as text from STREAM, return as Lisp object.
1891 If STREAM is nil, use the value of `standard-input' (which see).
1892 STREAM or the value of `standard-input' may be:
1893 a buffer (read from point and advance it)
1894 a marker (read from where it points and advance it)
1895 a function (call it with no arguments for each character,
1896 call it with a char as argument to push a char back)
1897 a string (takes text from string, starting at the beginning)
1898 t (read text line using minibuffer and use it, or read from
1899 standard input in batch mode). */)
1904 stream
= Vstandard_input
;
1905 if (EQ (stream
, Qt
))
1906 stream
= Qread_char
;
1907 if (EQ (stream
, Qread_char
))
1908 return Fread_minibuffer (build_string ("Lisp expression: "), Qnil
);
1910 return read_internal_start (stream
, Qnil
, Qnil
);
1913 DEFUN ("read-from-string", Fread_from_string
, Sread_from_string
, 1, 3, 0,
1914 doc
: /* Read one Lisp expression which is represented as text by STRING.
1915 Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX).
1916 START and END optionally delimit a substring of STRING from which to read;
1917 they default to 0 and (length STRING) respectively. */)
1918 (string
, start
, end
)
1919 Lisp_Object string
, start
, end
;
1922 CHECK_STRING (string
);
1923 /* read_internal_start sets read_from_string_index. */
1924 ret
= read_internal_start (string
, start
, end
);
1925 return Fcons (ret
, make_number (read_from_string_index
));
1928 /* Function to set up the global context we need in toplevel read
1931 read_internal_start (stream
, start
, end
)
1933 Lisp_Object start
; /* Only used when stream is a string. */
1934 Lisp_Object end
; /* Only used when stream is a string. */
1939 new_backquote_flag
= 0;
1940 read_objects
= Qnil
;
1941 if (EQ (Vread_with_symbol_positions
, Qt
)
1942 || EQ (Vread_with_symbol_positions
, stream
))
1943 Vread_symbol_positions_list
= Qnil
;
1945 if (STRINGP (stream
)
1946 || ((CONSP (stream
) && STRINGP (XCAR (stream
)))))
1948 int startval
, endval
;
1951 if (STRINGP (stream
))
1954 string
= XCAR (stream
);
1957 endval
= SCHARS (string
);
1961 endval
= XINT (end
);
1962 if (endval
< 0 || endval
> SCHARS (string
))
1963 args_out_of_range (string
, end
);
1970 CHECK_NUMBER (start
);
1971 startval
= XINT (start
);
1972 if (startval
< 0 || startval
> endval
)
1973 args_out_of_range (string
, start
);
1975 read_from_string_index
= startval
;
1976 read_from_string_index_byte
= string_char_to_byte (string
, startval
);
1977 read_from_string_limit
= endval
;
1980 retval
= read0 (stream
);
1981 if (EQ (Vread_with_symbol_positions
, Qt
)
1982 || EQ (Vread_with_symbol_positions
, stream
))
1983 Vread_symbol_positions_list
= Fnreverse (Vread_symbol_positions_list
);
1988 /* Signal Qinvalid_read_syntax error.
1989 S is error string of length N (if > 0) */
1992 invalid_syntax (s
, n
)
1998 xsignal1 (Qinvalid_read_syntax
, make_string (s
, n
));
2002 /* Use this for recursive reads, in contexts where internal tokens
2007 Lisp_Object readcharfun
;
2009 register Lisp_Object val
;
2012 val
= read1 (readcharfun
, &c
, 0);
2016 xsignal1 (Qinvalid_read_syntax
,
2017 Fmake_string (make_number (1), make_number (c
)));
2020 static int read_buffer_size
;
2021 static char *read_buffer
;
2023 /* Read a \-escape sequence, assuming we already read the `\'.
2024 If the escape sequence forces unibyte, return eight-bit char. */
2027 read_escape (readcharfun
, stringp
)
2028 Lisp_Object readcharfun
;
2031 register int c
= READCHAR
;
2032 /* \u allows up to four hex digits, \U up to eight. Default to the
2033 behavior for \u, and change this value in the case that \U is seen. */
2034 int unicode_hex_count
= 4;
2039 end_of_file_error ();
2069 error ("Invalid escape character syntax");
2072 c
= read_escape (readcharfun
, 0);
2073 return c
| meta_modifier
;
2078 error ("Invalid escape character syntax");
2081 c
= read_escape (readcharfun
, 0);
2082 return c
| shift_modifier
;
2087 error ("Invalid escape character syntax");
2090 c
= read_escape (readcharfun
, 0);
2091 return c
| hyper_modifier
;
2096 error ("Invalid escape character syntax");
2099 c
= read_escape (readcharfun
, 0);
2100 return c
| alt_modifier
;
2104 if (stringp
|| c
!= '-')
2111 c
= read_escape (readcharfun
, 0);
2112 return c
| super_modifier
;
2117 error ("Invalid escape character syntax");
2121 c
= read_escape (readcharfun
, 0);
2122 if ((c
& ~CHAR_MODIFIER_MASK
) == '?')
2123 return 0177 | (c
& CHAR_MODIFIER_MASK
);
2124 else if (! SINGLE_BYTE_CHAR_P ((c
& ~CHAR_MODIFIER_MASK
)))
2125 return c
| ctrl_modifier
;
2126 /* ASCII control chars are made from letters (both cases),
2127 as well as the non-letters within 0100...0137. */
2128 else if ((c
& 0137) >= 0101 && (c
& 0137) <= 0132)
2129 return (c
& (037 | ~0177));
2130 else if ((c
& 0177) >= 0100 && (c
& 0177) <= 0137)
2131 return (c
& (037 | ~0177));
2133 return c
| ctrl_modifier
;
2143 /* An octal escape, as in ANSI C. */
2145 register int i
= c
- '0';
2146 register int count
= 0;
2149 if ((c
= READCHAR
) >= '0' && c
<= '7')
2161 if (i
>= 0x80 && i
< 0x100)
2162 i
= BYTE8_TO_CHAR (i
);
2167 /* A hex escape, as in ANSI C. */
2174 if (c
>= '0' && c
<= '9')
2179 else if ((c
>= 'a' && c
<= 'f')
2180 || (c
>= 'A' && c
<= 'F'))
2183 if (c
>= 'a' && c
<= 'f')
2196 if (count
< 3 && i
>= 0x80)
2197 return BYTE8_TO_CHAR (i
);
2202 /* Post-Unicode-2.0: Up to eight hex chars. */
2203 unicode_hex_count
= 8;
2206 /* A Unicode escape. We only permit them in strings and characters,
2207 not arbitrarily in the source code, as in some other languages. */
2212 while (++count
<= unicode_hex_count
)
2215 /* isdigit and isalpha may be locale-specific, which we don't
2217 if (c
>= '0' && c
<= '9') i
= (i
<< 4) + (c
- '0');
2218 else if (c
>= 'a' && c
<= 'f') i
= (i
<< 4) + (c
- 'a') + 10;
2219 else if (c
>= 'A' && c
<= 'F') i
= (i
<< 4) + (c
- 'A') + 10;
2222 error ("Non-hex digit used for Unicode escape");
2235 /* Read an integer in radix RADIX using READCHARFUN to read
2236 characters. RADIX must be in the interval [2..36]; if it isn't, a
2237 read error is signaled . Value is the integer read. Signals an
2238 error if encountering invalid read syntax or if RADIX is out of
2242 read_integer (readcharfun
, radix
)
2243 Lisp_Object readcharfun
;
2246 int ndigits
= 0, invalid_p
, c
, sign
= 0;
2247 EMACS_INT number
= 0;
2249 if (radix
< 2 || radix
> 36)
2253 number
= ndigits
= invalid_p
= 0;
2269 if (c
>= '0' && c
<= '9')
2271 else if (c
>= 'a' && c
<= 'z')
2272 digit
= c
- 'a' + 10;
2273 else if (c
>= 'A' && c
<= 'Z')
2274 digit
= c
- 'A' + 10;
2281 if (digit
< 0 || digit
>= radix
)
2284 number
= radix
* number
+ digit
;
2290 if (ndigits
== 0 || invalid_p
)
2293 sprintf (buf
, "integer, radix %d", radix
);
2294 invalid_syntax (buf
, 0);
2297 return make_number (sign
* number
);
2301 /* If the next token is ')' or ']' or '.', we store that character
2302 in *PCH and the return value is not interesting. Else, we store
2303 zero in *PCH and we read and return one lisp object.
2305 FIRST_IN_LIST is nonzero if this is the first element of a list. */
2308 read1 (readcharfun
, pch
, first_in_list
)
2309 register Lisp_Object readcharfun
;
2314 int uninterned_symbol
= 0;
2322 c
= READCHAR_REPORT_MULTIBYTE (&multibyte
);
2324 end_of_file_error ();
2329 return read_list (0, readcharfun
);
2332 return read_vector (readcharfun
, 0);
2349 tmp
= read_vector (readcharfun
, 0);
2350 if (XVECTOR (tmp
)->size
< CHAR_TABLE_STANDARD_SLOTS
)
2351 error ("Invalid size char-table");
2352 XSETPVECTYPE (XVECTOR (tmp
), PVEC_CHAR_TABLE
);
2363 tmp
= read_vector (readcharfun
, 0);
2364 if (!INTEGERP (AREF (tmp
, 0)))
2365 error ("Invalid depth in char-table");
2366 depth
= XINT (AREF (tmp
, 0));
2367 if (depth
< 1 || depth
> 3)
2368 error ("Invalid depth in char-table");
2369 size
= XVECTOR (tmp
)->size
- 2;
2370 if (chartab_size
[depth
] != size
)
2371 error ("Invalid size char-table");
2372 XSETPVECTYPE (XVECTOR (tmp
), PVEC_SUB_CHAR_TABLE
);
2375 invalid_syntax ("#^^", 3);
2377 invalid_syntax ("#^", 2);
2382 length
= read1 (readcharfun
, pch
, first_in_list
);
2386 Lisp_Object tmp
, val
;
2388 = ((XFASTINT (length
) + BOOL_VECTOR_BITS_PER_CHAR
- 1)
2389 / BOOL_VECTOR_BITS_PER_CHAR
);
2392 tmp
= read1 (readcharfun
, pch
, first_in_list
);
2393 if (STRING_MULTIBYTE (tmp
)
2394 || (size_in_chars
!= SCHARS (tmp
)
2395 /* We used to print 1 char too many
2396 when the number of bits was a multiple of 8.
2397 Accept such input in case it came from an old
2399 && ! (XFASTINT (length
)
2400 == (SCHARS (tmp
) - 1) * BOOL_VECTOR_BITS_PER_CHAR
)))
2401 invalid_syntax ("#&...", 5);
2403 val
= Fmake_bool_vector (length
, Qnil
);
2404 bcopy (SDATA (tmp
), XBOOL_VECTOR (val
)->data
,
2406 /* Clear the extraneous bits in the last byte. */
2407 if (XINT (length
) != size_in_chars
* BOOL_VECTOR_BITS_PER_CHAR
)
2408 XBOOL_VECTOR (val
)->data
[size_in_chars
- 1]
2409 &= (1 << (XINT (length
) % BOOL_VECTOR_BITS_PER_CHAR
)) - 1;
2412 invalid_syntax ("#&...", 5);
2416 /* Accept compiled functions at read-time so that we don't have to
2417 build them using function calls. */
2419 tmp
= read_vector (readcharfun
, 1);
2420 return Fmake_byte_code (XVECTOR (tmp
)->size
,
2421 XVECTOR (tmp
)->contents
);
2426 struct gcpro gcpro1
;
2429 /* Read the string itself. */
2430 tmp
= read1 (readcharfun
, &ch
, 0);
2431 if (ch
!= 0 || !STRINGP (tmp
))
2432 invalid_syntax ("#", 1);
2434 /* Read the intervals and their properties. */
2437 Lisp_Object beg
, end
, plist
;
2439 beg
= read1 (readcharfun
, &ch
, 0);
2444 end
= read1 (readcharfun
, &ch
, 0);
2446 plist
= read1 (readcharfun
, &ch
, 0);
2448 invalid_syntax ("Invalid string property list", 0);
2449 Fset_text_properties (beg
, end
, plist
, tmp
);
2455 /* #@NUMBER is used to skip NUMBER following characters.
2456 That's used in .elc files to skip over doc strings
2457 and function definitions. */
2463 /* Read a decimal integer. */
2464 while ((c
= READCHAR
) >= 0
2465 && c
>= '0' && c
<= '9')
2473 if (load_force_doc_strings
2474 && (EQ (readcharfun
, Qget_file_char
)
2475 || EQ (readcharfun
, Qget_emacs_mule_file_char
)))
2477 /* If we are supposed to force doc strings into core right now,
2478 record the last string that we skipped,
2479 and record where in the file it comes from. */
2481 /* But first exchange saved_doc_string
2482 with prev_saved_doc_string, so we save two strings. */
2484 char *temp
= saved_doc_string
;
2485 int temp_size
= saved_doc_string_size
;
2486 file_offset temp_pos
= saved_doc_string_position
;
2487 int temp_len
= saved_doc_string_length
;
2489 saved_doc_string
= prev_saved_doc_string
;
2490 saved_doc_string_size
= prev_saved_doc_string_size
;
2491 saved_doc_string_position
= prev_saved_doc_string_position
;
2492 saved_doc_string_length
= prev_saved_doc_string_length
;
2494 prev_saved_doc_string
= temp
;
2495 prev_saved_doc_string_size
= temp_size
;
2496 prev_saved_doc_string_position
= temp_pos
;
2497 prev_saved_doc_string_length
= temp_len
;
2500 if (saved_doc_string_size
== 0)
2502 saved_doc_string_size
= nskip
+ 100;
2503 saved_doc_string
= (char *) xmalloc (saved_doc_string_size
);
2505 if (nskip
> saved_doc_string_size
)
2507 saved_doc_string_size
= nskip
+ 100;
2508 saved_doc_string
= (char *) xrealloc (saved_doc_string
,
2509 saved_doc_string_size
);
2512 saved_doc_string_position
= file_tell (instream
);
2514 /* Copy that many characters into saved_doc_string. */
2515 for (i
= 0; i
< nskip
&& c
>= 0; i
++)
2516 saved_doc_string
[i
] = c
= READCHAR
;
2518 saved_doc_string_length
= i
;
2522 /* Skip that many characters. */
2523 for (i
= 0; i
< nskip
&& c
>= 0; i
++)
2532 /* #! appears at the beginning of an executable file.
2533 Skip the first line. */
2534 while (c
!= '\n' && c
>= 0)
2539 return Vload_file_name
;
2541 return Fcons (Qfunction
, Fcons (read0 (readcharfun
), Qnil
));
2542 /* #:foo is the uninterned symbol named foo. */
2545 uninterned_symbol
= 1;
2549 /* Reader forms that can reuse previously read objects. */
2550 if (c
>= '0' && c
<= '9')
2555 /* Read a non-negative integer. */
2556 while (c
>= '0' && c
<= '9')
2562 /* #n=object returns object, but associates it with n for #n#. */
2565 /* Make a placeholder for #n# to use temporarily */
2566 Lisp_Object placeholder
;
2569 placeholder
= Fcons(Qnil
, Qnil
);
2570 cell
= Fcons (make_number (n
), placeholder
);
2571 read_objects
= Fcons (cell
, read_objects
);
2573 /* Read the object itself. */
2574 tem
= read0 (readcharfun
);
2576 /* Now put it everywhere the placeholder was... */
2577 substitute_object_in_subtree (tem
, placeholder
);
2579 /* ...and #n# will use the real value from now on. */
2580 Fsetcdr (cell
, tem
);
2584 /* #n# returns a previously read object. */
2587 tem
= Fassq (make_number (n
), read_objects
);
2590 /* Fall through to error message. */
2592 else if (c
== 'r' || c
== 'R')
2593 return read_integer (readcharfun
, n
);
2595 /* Fall through to error message. */
2597 else if (c
== 'x' || c
== 'X')
2598 return read_integer (readcharfun
, 16);
2599 else if (c
== 'o' || c
== 'O')
2600 return read_integer (readcharfun
, 8);
2601 else if (c
== 'b' || c
== 'B')
2602 return read_integer (readcharfun
, 2);
2605 invalid_syntax ("#", 1);
2608 while ((c
= READCHAR
) >= 0 && c
!= '\n');
2613 return Fcons (Qquote
, Fcons (read0 (readcharfun
), Qnil
));
2619 Vold_style_backquotes
= Qt
;
2626 new_backquote_flag
++;
2627 value
= read0 (readcharfun
);
2628 new_backquote_flag
--;
2630 return Fcons (Qbackquote
, Fcons (value
, Qnil
));
2634 if (new_backquote_flag
)
2636 Lisp_Object comma_type
= Qnil
;
2641 comma_type
= Qcomma_at
;
2643 comma_type
= Qcomma_dot
;
2646 if (ch
>= 0) UNREAD (ch
);
2647 comma_type
= Qcomma
;
2650 new_backquote_flag
--;
2651 value
= read0 (readcharfun
);
2652 new_backquote_flag
++;
2653 return Fcons (comma_type
, Fcons (value
, Qnil
));
2657 Vold_style_backquotes
= Qt
;
2669 end_of_file_error ();
2671 /* Accept `single space' syntax like (list ? x) where the
2672 whitespace character is SPC or TAB.
2673 Other literal whitespace like NL, CR, and FF are not accepted,
2674 as there are well-established escape sequences for these. */
2675 if (c
== ' ' || c
== '\t')
2676 return make_number (c
);
2679 c
= read_escape (readcharfun
, 0);
2680 modifiers
= c
& CHAR_MODIFIER_MASK
;
2681 c
&= ~CHAR_MODIFIER_MASK
;
2682 if (CHAR_BYTE8_P (c
))
2683 c
= CHAR_TO_BYTE8 (c
);
2686 next_char
= READCHAR
;
2687 if (next_char
== '.')
2689 /* Only a dotted-pair dot is valid after a char constant. */
2690 int next_next_char
= READCHAR
;
2691 UNREAD (next_next_char
);
2693 ok
= (next_next_char
<= 040
2694 || (next_next_char
< 0200
2695 && (index ("\"';([#?", next_next_char
)
2696 || (!first_in_list
&& next_next_char
== '`')
2697 || (new_backquote_flag
&& next_next_char
== ','))));
2701 ok
= (next_char
<= 040
2702 || (next_char
< 0200
2703 && (index ("\"';()[]#?", next_char
)
2704 || (!first_in_list
&& next_char
== '`')
2705 || (new_backquote_flag
&& next_char
== ','))));
2709 return make_number (c
);
2711 invalid_syntax ("?", 1);
2716 char *p
= read_buffer
;
2717 char *end
= read_buffer
+ read_buffer_size
;
2719 /* Nonzero if we saw an escape sequence specifying
2720 a multibyte character. */
2721 int force_multibyte
= 0;
2722 /* Nonzero if we saw an escape sequence specifying
2723 a single-byte character. */
2724 int force_singlebyte
= 0;
2728 while ((c
= READCHAR
) >= 0
2731 if (end
- p
< MAX_MULTIBYTE_LENGTH
)
2733 int offset
= p
- read_buffer
;
2734 read_buffer
= (char *) xrealloc (read_buffer
,
2735 read_buffer_size
*= 2);
2736 p
= read_buffer
+ offset
;
2737 end
= read_buffer
+ read_buffer_size
;
2744 c
= read_escape (readcharfun
, 1);
2746 /* C is -1 if \ newline has just been seen */
2749 if (p
== read_buffer
)
2754 modifiers
= c
& CHAR_MODIFIER_MASK
;
2755 c
= c
& ~CHAR_MODIFIER_MASK
;
2757 if (CHAR_BYTE8_P (c
))
2758 force_singlebyte
= 1;
2759 else if (! ASCII_CHAR_P (c
))
2760 force_multibyte
= 1;
2761 else /* i.e. ASCII_CHAR_P (c) */
2763 /* Allow `\C- ' and `\C-?'. */
2764 if (modifiers
== CHAR_CTL
)
2767 c
= 0, modifiers
= 0;
2769 c
= 127, modifiers
= 0;
2771 if (modifiers
& CHAR_SHIFT
)
2773 /* Shift modifier is valid only with [A-Za-z]. */
2774 if (c
>= 'A' && c
<= 'Z')
2775 modifiers
&= ~CHAR_SHIFT
;
2776 else if (c
>= 'a' && c
<= 'z')
2777 c
-= ('a' - 'A'), modifiers
&= ~CHAR_SHIFT
;
2780 if (modifiers
& CHAR_META
)
2782 /* Move the meta bit to the right place for a
2784 modifiers
&= ~CHAR_META
;
2785 c
= BYTE8_TO_CHAR (c
| 0x80);
2786 force_singlebyte
= 1;
2790 /* Any modifiers remaining are invalid. */
2792 error ("Invalid modifier in string");
2793 p
+= CHAR_STRING (c
, (unsigned char *) p
);
2797 p
+= CHAR_STRING (c
, (unsigned char *) p
);
2798 if (CHAR_BYTE8_P (c
))
2799 force_singlebyte
= 1;
2800 else if (! ASCII_CHAR_P (c
))
2801 force_multibyte
= 1;
2807 end_of_file_error ();
2809 /* If purifying, and string starts with \ newline,
2810 return zero instead. This is for doc strings
2811 that we are really going to find in etc/DOC.nn.nn */
2812 if (!NILP (Vpurify_flag
) && NILP (Vdoc_file_name
) && cancel
)
2813 return make_number (0);
2815 if (force_multibyte
)
2816 /* READ_BUFFER already contains valid multibyte forms. */
2818 else if (force_singlebyte
)
2820 nchars
= str_as_unibyte (read_buffer
, p
- read_buffer
);
2821 p
= read_buffer
+ nchars
;
2824 /* Otherwise, READ_BUFFER contains only ASCII. */
2827 /* We want readchar_count to be the number of characters, not
2828 bytes. Hence we adjust for multibyte characters in the
2829 string. ... But it doesn't seem to be necessary, because
2830 READCHAR *does* read multibyte characters from buffers. */
2831 /* readchar_count -= (p - read_buffer) - nchars; */
2833 return make_pure_string (read_buffer
, nchars
, p
- read_buffer
,
2835 || (p
- read_buffer
!= nchars
)));
2836 return make_specified_string (read_buffer
, nchars
, p
- read_buffer
,
2838 || (p
- read_buffer
!= nchars
)));
2843 int next_char
= READCHAR
;
2846 if (next_char
<= 040
2847 || (next_char
< 0200
2848 && (index ("\"';([#?", next_char
)
2849 || (!first_in_list
&& next_char
== '`')
2850 || (new_backquote_flag
&& next_char
== ','))))
2856 /* Otherwise, we fall through! Note that the atom-reading loop
2857 below will now loop at least once, assuring that we will not
2858 try to UNREAD two characters in a row. */
2862 if (c
<= 040) goto retry
;
2863 if (c
== 0x8a0) /* NBSP */
2866 char *p
= read_buffer
;
2870 char *end
= read_buffer
+ read_buffer_size
;
2873 && c
!= 0x8a0 /* NBSP */
2875 || (!index ("\"';()[]#", c
)
2876 && !(!first_in_list
&& c
== '`')
2877 && !(new_backquote_flag
&& c
== ','))))
2879 if (end
- p
< MAX_MULTIBYTE_LENGTH
)
2881 int offset
= p
- read_buffer
;
2882 read_buffer
= (char *) xrealloc (read_buffer
,
2883 read_buffer_size
*= 2);
2884 p
= read_buffer
+ offset
;
2885 end
= read_buffer
+ read_buffer_size
;
2892 end_of_file_error ();
2897 p
+= CHAR_STRING (c
, p
);
2905 int offset
= p
- read_buffer
;
2906 read_buffer
= (char *) xrealloc (read_buffer
,
2907 read_buffer_size
*= 2);
2908 p
= read_buffer
+ offset
;
2909 end
= read_buffer
+ read_buffer_size
;
2916 if (!quoted
&& !uninterned_symbol
)
2919 register Lisp_Object val
;
2921 if (*p1
== '+' || *p1
== '-') p1
++;
2922 /* Is it an integer? */
2925 while (p1
!= p
&& (c
= *p1
) >= '0' && c
<= '9') p1
++;
2926 /* Integers can have trailing decimal points. */
2927 if (p1
> read_buffer
&& p1
< p
&& *p1
== '.') p1
++;
2929 /* It is an integer. */
2933 /* Fixme: if we have strtol, use that, and check
2935 if (sizeof (int) == sizeof (EMACS_INT
))
2936 XSETINT (val
, atoi (read_buffer
));
2937 else if (sizeof (long) == sizeof (EMACS_INT
))
2938 XSETINT (val
, atol (read_buffer
));
2944 if (isfloat_string (read_buffer
))
2946 /* Compute NaN and infinities using 0.0 in a variable,
2947 to cope with compilers that think they are smarter
2953 /* Negate the value ourselves. This treats 0, NaNs,
2954 and infinity properly on IEEE floating point hosts,
2955 and works around a common bug where atof ("-0.0")
2957 int negative
= read_buffer
[0] == '-';
2959 /* The only way p[-1] can be 'F' or 'N', after isfloat_string
2960 returns 1, is if the input ends in e+INF or e+NaN. */
2967 value
= zero
/ zero
;
2969 /* If that made a "negative" NaN, negate it. */
2973 union { double d
; char c
[sizeof (double)]; } u_data
, u_minus_zero
;
2976 u_minus_zero
.d
= - 0.0;
2977 for (i
= 0; i
< sizeof (double); i
++)
2978 if (u_data
.c
[i
] & u_minus_zero
.c
[i
])
2984 /* Now VALUE is a positive NaN. */
2987 value
= atof (read_buffer
+ negative
);
2991 return make_float (negative
? - value
: value
);
2995 Lisp_Object name
, result
;
2996 EMACS_INT nbytes
= p
- read_buffer
;
2998 = (multibyte
? multibyte_chars_in_text (read_buffer
, nbytes
)
3001 if (uninterned_symbol
&& ! NILP (Vpurify_flag
))
3002 name
= make_pure_string (read_buffer
, nchars
, nbytes
, multibyte
);
3004 name
= make_specified_string (read_buffer
, nchars
, nbytes
,multibyte
);
3005 result
= (uninterned_symbol
? Fmake_symbol (name
)
3006 : Fintern (name
, Qnil
));
3008 if (EQ (Vread_with_symbol_positions
, Qt
)
3009 || EQ (Vread_with_symbol_positions
, readcharfun
))
3010 Vread_symbol_positions_list
=
3011 /* Kind of a hack; this will probably fail if characters
3012 in the symbol name were escaped. Not really a big
3014 Fcons (Fcons (result
,
3015 make_number (readchar_count
3016 - XFASTINT (Flength (Fsymbol_name (result
))))),
3017 Vread_symbol_positions_list
);
3025 /* List of nodes we've seen during substitute_object_in_subtree. */
3026 static Lisp_Object seen_list
;
3029 substitute_object_in_subtree (object
, placeholder
)
3031 Lisp_Object placeholder
;
3033 Lisp_Object check_object
;
3035 /* We haven't seen any objects when we start. */
3038 /* Make all the substitutions. */
3040 = substitute_object_recurse (object
, placeholder
, object
);
3042 /* Clear seen_list because we're done with it. */
3045 /* The returned object here is expected to always eq the
3047 if (!EQ (check_object
, object
))
3048 error ("Unexpected mutation error in reader");
3051 /* Feval doesn't get called from here, so no gc protection is needed. */
3052 #define SUBSTITUTE(get_val, set_val) \
3054 Lisp_Object old_value = get_val; \
3055 Lisp_Object true_value \
3056 = substitute_object_recurse (object, placeholder, \
3059 if (!EQ (old_value, true_value)) \
3066 substitute_object_recurse (object
, placeholder
, subtree
)
3068 Lisp_Object placeholder
;
3069 Lisp_Object subtree
;
3071 /* If we find the placeholder, return the target object. */
3072 if (EQ (placeholder
, subtree
))
3075 /* If we've been to this node before, don't explore it again. */
3076 if (!EQ (Qnil
, Fmemq (subtree
, seen_list
)))
3079 /* If this node can be the entry point to a cycle, remember that
3080 we've seen it. It can only be such an entry point if it was made
3081 by #n=, which means that we can find it as a value in
3083 if (!EQ (Qnil
, Frassq (subtree
, read_objects
)))
3084 seen_list
= Fcons (subtree
, seen_list
);
3086 /* Recurse according to subtree's type.
3087 Every branch must return a Lisp_Object. */
3088 switch (XTYPE (subtree
))
3090 case Lisp_Vectorlike
:
3093 if (BOOL_VECTOR_P (subtree
))
3094 return subtree
; /* No sub-objects anyway. */
3095 else if (CHAR_TABLE_P (subtree
) || SUB_CHAR_TABLE_P (subtree
)
3096 || COMPILEDP (subtree
))
3097 length
= ASIZE (subtree
) & PSEUDOVECTOR_SIZE_MASK
;
3098 else if (VECTORP (subtree
))
3099 length
= ASIZE (subtree
);
3101 /* An unknown pseudovector may contain non-Lisp fields, so we
3102 can't just blindly traverse all its fields. We used to call
3103 `Flength' which signaled `sequencep', so I just preserved this
3105 wrong_type_argument (Qsequencep
, subtree
);
3107 for (i
= 0; i
< length
; i
++)
3108 SUBSTITUTE (AREF (subtree
, i
),
3109 ASET (subtree
, i
, true_value
));
3115 SUBSTITUTE (XCAR (subtree
),
3116 XSETCAR (subtree
, true_value
));
3117 SUBSTITUTE (XCDR (subtree
),
3118 XSETCDR (subtree
, true_value
));
3124 /* Check for text properties in each interval.
3125 substitute_in_interval contains part of the logic. */
3127 INTERVAL root_interval
= STRING_INTERVALS (subtree
);
3128 Lisp_Object arg
= Fcons (object
, placeholder
);
3130 traverse_intervals_noorder (root_interval
,
3131 &substitute_in_interval
, arg
);
3136 /* Other types don't recurse any further. */
3142 /* Helper function for substitute_object_recurse. */
3144 substitute_in_interval (interval
, arg
)
3148 Lisp_Object object
= Fcar (arg
);
3149 Lisp_Object placeholder
= Fcdr (arg
);
3151 SUBSTITUTE(interval
->plist
, interval
->plist
= true_value
);
3170 if (*cp
== '+' || *cp
== '-')
3173 if (*cp
>= '0' && *cp
<= '9')
3176 while (*cp
>= '0' && *cp
<= '9')
3184 if (*cp
>= '0' && *cp
<= '9')
3187 while (*cp
>= '0' && *cp
<= '9')
3190 if (*cp
== 'e' || *cp
== 'E')
3194 if (*cp
== '+' || *cp
== '-')
3198 if (*cp
>= '0' && *cp
<= '9')
3201 while (*cp
>= '0' && *cp
<= '9')
3204 else if (cp
== start
)
3206 else if (cp
[-1] == '+' && cp
[0] == 'I' && cp
[1] == 'N' && cp
[2] == 'F')
3211 else if (cp
[-1] == '+' && cp
[0] == 'N' && cp
[1] == 'a' && cp
[2] == 'N')
3217 return (((*cp
== 0) || (*cp
== ' ') || (*cp
== '\t') || (*cp
== '\n') || (*cp
== '\r') || (*cp
== '\f'))
3218 && (state
== (LEAD_INT
|DOT_CHAR
|TRAIL_INT
)
3219 || state
== (DOT_CHAR
|TRAIL_INT
)
3220 || state
== (LEAD_INT
|E_CHAR
|EXP_INT
)
3221 || state
== (LEAD_INT
|DOT_CHAR
|TRAIL_INT
|E_CHAR
|EXP_INT
)
3222 || state
== (DOT_CHAR
|TRAIL_INT
|E_CHAR
|EXP_INT
)));
3227 read_vector (readcharfun
, bytecodeflag
)
3228 Lisp_Object readcharfun
;
3233 register Lisp_Object
*ptr
;
3234 register Lisp_Object tem
, item
, vector
;
3235 register struct Lisp_Cons
*otem
;
3238 tem
= read_list (1, readcharfun
);
3239 len
= Flength (tem
);
3240 vector
= (read_pure
? make_pure_vector (XINT (len
)) : Fmake_vector (len
, Qnil
));
3242 size
= XVECTOR (vector
)->size
;
3243 ptr
= XVECTOR (vector
)->contents
;
3244 for (i
= 0; i
< size
; i
++)
3247 /* If `load-force-doc-strings' is t when reading a lazily-loaded
3248 bytecode object, the docstring containing the bytecode and
3249 constants values must be treated as unibyte and passed to
3250 Fread, to get the actual bytecode string and constants vector. */
3251 if (bytecodeflag
&& load_force_doc_strings
)
3253 if (i
== COMPILED_BYTECODE
)
3255 if (!STRINGP (item
))
3256 error ("Invalid byte code");
3258 /* Delay handling the bytecode slot until we know whether
3259 it is lazily-loaded (we can tell by whether the
3260 constants slot is nil). */
3261 ptr
[COMPILED_CONSTANTS
] = item
;
3264 else if (i
== COMPILED_CONSTANTS
)
3266 Lisp_Object bytestr
= ptr
[COMPILED_CONSTANTS
];
3270 /* Coerce string to unibyte (like string-as-unibyte,
3271 but without generating extra garbage and
3272 guaranteeing no change in the contents). */
3273 STRING_SET_CHARS (bytestr
, SBYTES (bytestr
));
3274 STRING_SET_UNIBYTE (bytestr
);
3276 item
= Fread (Fcons (bytestr
, readcharfun
));
3278 error ("Invalid byte code");
3280 otem
= XCONS (item
);
3281 bytestr
= XCAR (item
);
3286 /* Now handle the bytecode slot. */
3287 ptr
[COMPILED_BYTECODE
] = read_pure
? Fpurecopy (bytestr
) : bytestr
;
3289 else if (i
== COMPILED_DOC_STRING
3291 && ! STRING_MULTIBYTE (item
))
3293 if (EQ (readcharfun
, Qget_emacs_mule_file_char
))
3294 item
= Fdecode_coding_string (item
, Qemacs_mule
, Qnil
, Qnil
);
3296 item
= Fstring_as_multibyte (item
);
3299 ptr
[i
] = read_pure
? Fpurecopy (item
) : item
;
3307 /* FLAG = 1 means check for ] to terminate rather than ) and .
3308 FLAG = -1 means check for starting with defun
3309 and make structure pure. */
3312 read_list (flag
, readcharfun
)
3314 register Lisp_Object readcharfun
;
3316 /* -1 means check next element for defun,
3317 0 means don't check,
3318 1 means already checked and found defun. */
3319 int defunflag
= flag
< 0 ? -1 : 0;
3320 Lisp_Object val
, tail
;
3321 register Lisp_Object elt
, tem
;
3322 struct gcpro gcpro1
, gcpro2
;
3323 /* 0 is the normal case.
3324 1 means this list is a doc reference; replace it with the number 0.
3325 2 means this list is a doc reference; replace it with the doc string. */
3326 int doc_reference
= 0;
3328 /* Initialize this to 1 if we are reading a list. */
3329 int first_in_list
= flag
<= 0;
3338 elt
= read1 (readcharfun
, &ch
, first_in_list
);
3343 /* While building, if the list starts with #$, treat it specially. */
3344 if (EQ (elt
, Vload_file_name
)
3346 && !NILP (Vpurify_flag
))
3348 if (NILP (Vdoc_file_name
))
3349 /* We have not yet called Snarf-documentation, so assume
3350 this file is described in the DOC-MM.NN file
3351 and Snarf-documentation will fill in the right value later.
3352 For now, replace the whole list with 0. */
3355 /* We have already called Snarf-documentation, so make a relative
3356 file name for this file, so it can be found properly
3357 in the installed Lisp directory.
3358 We don't use Fexpand_file_name because that would make
3359 the directory absolute now. */
3360 elt
= concat2 (build_string ("../lisp/"),
3361 Ffile_name_nondirectory (elt
));
3363 else if (EQ (elt
, Vload_file_name
)
3365 && load_force_doc_strings
)
3374 invalid_syntax (") or . in a vector", 18);
3382 XSETCDR (tail
, read0 (readcharfun
));
3384 val
= read0 (readcharfun
);
3385 read1 (readcharfun
, &ch
, 0);
3389 if (doc_reference
== 1)
3390 return make_number (0);
3391 if (doc_reference
== 2)
3393 /* Get a doc string from the file we are loading.
3394 If it's in saved_doc_string, get it from there.
3396 Here, we don't know if the string is a
3397 bytecode string or a doc string. As a
3398 bytecode string must be unibyte, we always
3399 return a unibyte string. If it is actually a
3400 doc string, caller must make it
3403 int pos
= XINT (XCDR (val
));
3404 /* Position is negative for user variables. */
3405 if (pos
< 0) pos
= -pos
;
3406 if (pos
>= saved_doc_string_position
3407 && pos
< (saved_doc_string_position
3408 + saved_doc_string_length
))
3410 int start
= pos
- saved_doc_string_position
;
3413 /* Process quoting with ^A,
3414 and find the end of the string,
3415 which is marked with ^_ (037). */
3416 for (from
= start
, to
= start
;
3417 saved_doc_string
[from
] != 037;)
3419 int c
= saved_doc_string
[from
++];
3422 c
= saved_doc_string
[from
++];
3424 saved_doc_string
[to
++] = c
;
3426 saved_doc_string
[to
++] = 0;
3428 saved_doc_string
[to
++] = 037;
3431 saved_doc_string
[to
++] = c
;
3434 return make_unibyte_string (saved_doc_string
+ start
,
3437 /* Look in prev_saved_doc_string the same way. */
3438 else if (pos
>= prev_saved_doc_string_position
3439 && pos
< (prev_saved_doc_string_position
3440 + prev_saved_doc_string_length
))
3442 int start
= pos
- prev_saved_doc_string_position
;
3445 /* Process quoting with ^A,
3446 and find the end of the string,
3447 which is marked with ^_ (037). */
3448 for (from
= start
, to
= start
;
3449 prev_saved_doc_string
[from
] != 037;)
3451 int c
= prev_saved_doc_string
[from
++];
3454 c
= prev_saved_doc_string
[from
++];
3456 prev_saved_doc_string
[to
++] = c
;
3458 prev_saved_doc_string
[to
++] = 0;
3460 prev_saved_doc_string
[to
++] = 037;
3463 prev_saved_doc_string
[to
++] = c
;
3466 return make_unibyte_string (prev_saved_doc_string
3471 return get_doc_string (val
, 1, 0);
3476 invalid_syntax (". in wrong context", 18);
3478 invalid_syntax ("] in a list", 11);
3480 tem
= (read_pure
&& flag
<= 0
3481 ? pure_cons (elt
, Qnil
)
3482 : Fcons (elt
, Qnil
));
3484 XSETCDR (tail
, tem
);
3489 defunflag
= EQ (elt
, Qdefun
);
3490 else if (defunflag
> 0)
3495 Lisp_Object Vobarray
;
3496 Lisp_Object initial_obarray
;
3498 /* oblookup stores the bucket number here, for the sake of Funintern. */
3500 int oblookup_last_bucket_number
;
3502 static int hash_string ();
3504 /* Get an error if OBARRAY is not an obarray.
3505 If it is one, return it. */
3508 check_obarray (obarray
)
3509 Lisp_Object obarray
;
3511 if (!VECTORP (obarray
) || XVECTOR (obarray
)->size
== 0)
3513 /* If Vobarray is now invalid, force it to be valid. */
3514 if (EQ (Vobarray
, obarray
)) Vobarray
= initial_obarray
;
3515 wrong_type_argument (Qvectorp
, obarray
);
3520 /* Intern the C string STR: return a symbol with that name,
3521 interned in the current obarray. */
3528 int len
= strlen (str
);
3529 Lisp_Object obarray
;
3532 if (!VECTORP (obarray
) || XVECTOR (obarray
)->size
== 0)
3533 obarray
= check_obarray (obarray
);
3534 tem
= oblookup (obarray
, str
, len
, len
);
3537 return Fintern (make_string (str
, len
), obarray
);
3540 /* Create an uninterned symbol with name STR. */
3546 int len
= strlen (str
);
3548 return Fmake_symbol ((!NILP (Vpurify_flag
)
3549 ? make_pure_string (str
, len
, len
, 0)
3550 : make_string (str
, len
)));
3553 DEFUN ("intern", Fintern
, Sintern
, 1, 2, 0,
3554 doc
: /* Return the canonical symbol whose name is STRING.
3555 If there is none, one is created by this function and returned.
3556 A second optional argument specifies the obarray to use;
3557 it defaults to the value of `obarray'. */)
3559 Lisp_Object string
, obarray
;
3561 register Lisp_Object tem
, sym
, *ptr
;
3563 if (NILP (obarray
)) obarray
= Vobarray
;
3564 obarray
= check_obarray (obarray
);
3566 CHECK_STRING (string
);
3568 tem
= oblookup (obarray
, SDATA (string
),
3571 if (!INTEGERP (tem
))
3574 if (!NILP (Vpurify_flag
))
3575 string
= Fpurecopy (string
);
3576 sym
= Fmake_symbol (string
);
3578 if (EQ (obarray
, initial_obarray
))
3579 XSYMBOL (sym
)->interned
= SYMBOL_INTERNED_IN_INITIAL_OBARRAY
;
3581 XSYMBOL (sym
)->interned
= SYMBOL_INTERNED
;
3583 if ((SREF (string
, 0) == ':')
3584 && EQ (obarray
, initial_obarray
))
3586 XSYMBOL (sym
)->constant
= 1;
3587 XSYMBOL (sym
)->value
= sym
;
3590 ptr
= &XVECTOR (obarray
)->contents
[XINT (tem
)];
3592 XSYMBOL (sym
)->next
= XSYMBOL (*ptr
);
3594 XSYMBOL (sym
)->next
= 0;
3599 DEFUN ("intern-soft", Fintern_soft
, Sintern_soft
, 1, 2, 0,
3600 doc
: /* Return the canonical symbol named NAME, or nil if none exists.
3601 NAME may be a string or a symbol. If it is a symbol, that exact
3602 symbol is searched for.
3603 A second optional argument specifies the obarray to use;
3604 it defaults to the value of `obarray'. */)
3606 Lisp_Object name
, obarray
;
3608 register Lisp_Object tem
, string
;
3610 if (NILP (obarray
)) obarray
= Vobarray
;
3611 obarray
= check_obarray (obarray
);
3613 if (!SYMBOLP (name
))
3615 CHECK_STRING (name
);
3619 string
= SYMBOL_NAME (name
);
3621 tem
= oblookup (obarray
, SDATA (string
), SCHARS (string
), SBYTES (string
));
3622 if (INTEGERP (tem
) || (SYMBOLP (name
) && !EQ (name
, tem
)))
3628 DEFUN ("unintern", Funintern
, Sunintern
, 1, 2, 0,
3629 doc
: /* Delete the symbol named NAME, if any, from OBARRAY.
3630 The value is t if a symbol was found and deleted, nil otherwise.
3631 NAME may be a string or a symbol. If it is a symbol, that symbol
3632 is deleted, if it belongs to OBARRAY--no other symbol is deleted.
3633 OBARRAY defaults to the value of the variable `obarray'. */)
3635 Lisp_Object name
, obarray
;
3637 register Lisp_Object string
, tem
;
3640 if (NILP (obarray
)) obarray
= Vobarray
;
3641 obarray
= check_obarray (obarray
);
3644 string
= SYMBOL_NAME (name
);
3647 CHECK_STRING (name
);
3651 tem
= oblookup (obarray
, SDATA (string
),
3656 /* If arg was a symbol, don't delete anything but that symbol itself. */
3657 if (SYMBOLP (name
) && !EQ (name
, tem
))
3660 XSYMBOL (tem
)->interned
= SYMBOL_UNINTERNED
;
3661 XSYMBOL (tem
)->constant
= 0;
3662 XSYMBOL (tem
)->indirect_variable
= 0;
3664 hash
= oblookup_last_bucket_number
;
3666 if (EQ (XVECTOR (obarray
)->contents
[hash
], tem
))
3668 if (XSYMBOL (tem
)->next
)
3669 XSETSYMBOL (XVECTOR (obarray
)->contents
[hash
], XSYMBOL (tem
)->next
);
3671 XSETINT (XVECTOR (obarray
)->contents
[hash
], 0);
3675 Lisp_Object tail
, following
;
3677 for (tail
= XVECTOR (obarray
)->contents
[hash
];
3678 XSYMBOL (tail
)->next
;
3681 XSETSYMBOL (following
, XSYMBOL (tail
)->next
);
3682 if (EQ (following
, tem
))
3684 XSYMBOL (tail
)->next
= XSYMBOL (following
)->next
;
3693 /* Return the symbol in OBARRAY whose names matches the string
3694 of SIZE characters (SIZE_BYTE bytes) at PTR.
3695 If there is no such symbol in OBARRAY, return nil.
3697 Also store the bucket number in oblookup_last_bucket_number. */
3700 oblookup (obarray
, ptr
, size
, size_byte
)
3701 Lisp_Object obarray
;
3702 register const char *ptr
;
3703 int size
, size_byte
;
3707 register Lisp_Object tail
;
3708 Lisp_Object bucket
, tem
;
3710 if (!VECTORP (obarray
)
3711 || (obsize
= XVECTOR (obarray
)->size
) == 0)
3713 obarray
= check_obarray (obarray
);
3714 obsize
= XVECTOR (obarray
)->size
;
3716 /* This is sometimes needed in the middle of GC. */
3717 obsize
&= ~ARRAY_MARK_FLAG
;
3718 hash
= hash_string (ptr
, size_byte
) % obsize
;
3719 bucket
= XVECTOR (obarray
)->contents
[hash
];
3720 oblookup_last_bucket_number
= hash
;
3721 if (EQ (bucket
, make_number (0)))
3723 else if (!SYMBOLP (bucket
))
3724 error ("Bad data in guts of obarray"); /* Like CADR error message */
3726 for (tail
= bucket
; ; XSETSYMBOL (tail
, XSYMBOL (tail
)->next
))
3728 if (SBYTES (SYMBOL_NAME (tail
)) == size_byte
3729 && SCHARS (SYMBOL_NAME (tail
)) == size
3730 && !bcmp (SDATA (SYMBOL_NAME (tail
)), ptr
, size_byte
))
3732 else if (XSYMBOL (tail
)->next
== 0)
3735 XSETINT (tem
, hash
);
3740 hash_string (ptr
, len
)
3741 const unsigned char *ptr
;
3744 register const unsigned char *p
= ptr
;
3745 register const unsigned char *end
= p
+ len
;
3746 register unsigned char c
;
3747 register int hash
= 0;
3752 if (c
>= 0140) c
-= 40;
3753 hash
= ((hash
<<3) + (hash
>>28) + c
);
3755 return hash
& 07777777777;
3759 map_obarray (obarray
, fn
, arg
)
3760 Lisp_Object obarray
;
3761 void (*fn
) P_ ((Lisp_Object
, Lisp_Object
));
3765 register Lisp_Object tail
;
3766 CHECK_VECTOR (obarray
);
3767 for (i
= XVECTOR (obarray
)->size
- 1; i
>= 0; i
--)
3769 tail
= XVECTOR (obarray
)->contents
[i
];
3774 if (XSYMBOL (tail
)->next
== 0)
3776 XSETSYMBOL (tail
, XSYMBOL (tail
)->next
);
3782 mapatoms_1 (sym
, function
)
3783 Lisp_Object sym
, function
;
3785 call1 (function
, sym
);
3788 DEFUN ("mapatoms", Fmapatoms
, Smapatoms
, 1, 2, 0,
3789 doc
: /* Call FUNCTION on every symbol in OBARRAY.
3790 OBARRAY defaults to the value of `obarray'. */)
3792 Lisp_Object function
, obarray
;
3794 if (NILP (obarray
)) obarray
= Vobarray
;
3795 obarray
= check_obarray (obarray
);
3797 map_obarray (obarray
, mapatoms_1
, function
);
3801 #define OBARRAY_SIZE 1511
3806 Lisp_Object oblength
;
3810 XSETFASTINT (oblength
, OBARRAY_SIZE
);
3812 Qnil
= Fmake_symbol (make_pure_string ("nil", 3, 3, 0));
3813 Vobarray
= Fmake_vector (oblength
, make_number (0));
3814 initial_obarray
= Vobarray
;
3815 staticpro (&initial_obarray
);
3816 /* Intern nil in the obarray */
3817 XSYMBOL (Qnil
)->interned
= SYMBOL_INTERNED_IN_INITIAL_OBARRAY
;
3818 XSYMBOL (Qnil
)->constant
= 1;
3820 /* These locals are to kludge around a pyramid compiler bug. */
3821 hash
= hash_string ("nil", 3);
3822 /* Separate statement here to avoid VAXC bug. */
3823 hash
%= OBARRAY_SIZE
;
3824 tem
= &XVECTOR (Vobarray
)->contents
[hash
];
3827 Qunbound
= Fmake_symbol (make_pure_string ("unbound", 7, 7, 0));
3828 XSYMBOL (Qnil
)->function
= Qunbound
;
3829 XSYMBOL (Qunbound
)->value
= Qunbound
;
3830 XSYMBOL (Qunbound
)->function
= Qunbound
;
3833 XSYMBOL (Qnil
)->value
= Qnil
;
3834 XSYMBOL (Qnil
)->plist
= Qnil
;
3835 XSYMBOL (Qt
)->value
= Qt
;
3836 XSYMBOL (Qt
)->constant
= 1;
3838 /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */
3841 Qvariable_documentation
= intern ("variable-documentation");
3842 staticpro (&Qvariable_documentation
);
3844 read_buffer_size
= 100 + MAX_MULTIBYTE_LENGTH
;
3845 read_buffer
= (char *) xmalloc (read_buffer_size
);
3850 struct Lisp_Subr
*sname
;
3853 sym
= intern (sname
->symbol_name
);
3854 XSETPVECTYPE (sname
, PVEC_SUBR
);
3855 XSETSUBR (XSYMBOL (sym
)->function
, sname
);
3858 #ifdef NOTDEF /* use fset in subr.el now */
3860 defalias (sname
, string
)
3861 struct Lisp_Subr
*sname
;
3865 sym
= intern (string
);
3866 XSETSUBR (XSYMBOL (sym
)->function
, sname
);
3870 /* Define an "integer variable"; a symbol whose value is forwarded
3871 to a C variable of type int. Sample call:
3872 DEFVAR_INT ("emacs-priority", &emacs_priority, "Documentation"); */
3874 defvar_int (namestring
, address
)
3878 Lisp_Object sym
, val
;
3879 sym
= intern (namestring
);
3880 val
= allocate_misc ();
3881 XMISCTYPE (val
) = Lisp_Misc_Intfwd
;
3882 XINTFWD (val
)->intvar
= address
;
3883 SET_SYMBOL_VALUE (sym
, val
);
3886 /* Similar but define a variable whose value is t if address contains 1,
3887 nil if address contains 0. */
3889 defvar_bool (namestring
, address
)
3893 Lisp_Object sym
, val
;
3894 sym
= intern (namestring
);
3895 val
= allocate_misc ();
3896 XMISCTYPE (val
) = Lisp_Misc_Boolfwd
;
3897 XBOOLFWD (val
)->boolvar
= address
;
3898 SET_SYMBOL_VALUE (sym
, val
);
3899 Vbyte_boolean_vars
= Fcons (sym
, Vbyte_boolean_vars
);
3902 /* Similar but define a variable whose value is the Lisp Object stored
3903 at address. Two versions: with and without gc-marking of the C
3904 variable. The nopro version is used when that variable will be
3905 gc-marked for some other reason, since marking the same slot twice
3906 can cause trouble with strings. */
3908 defvar_lisp_nopro (namestring
, address
)
3910 Lisp_Object
*address
;
3912 Lisp_Object sym
, val
;
3913 sym
= intern (namestring
);
3914 val
= allocate_misc ();
3915 XMISCTYPE (val
) = Lisp_Misc_Objfwd
;
3916 XOBJFWD (val
)->objvar
= address
;
3917 SET_SYMBOL_VALUE (sym
, val
);
3921 defvar_lisp (namestring
, address
)
3923 Lisp_Object
*address
;
3925 defvar_lisp_nopro (namestring
, address
);
3926 staticpro (address
);
3929 /* Similar but define a variable whose value is the Lisp Object stored
3930 at a particular offset in the current kboard object. */
3933 defvar_kboard (namestring
, offset
)
3937 Lisp_Object sym
, val
;
3938 sym
= intern (namestring
);
3939 val
= allocate_misc ();
3940 XMISCTYPE (val
) = Lisp_Misc_Kboard_Objfwd
;
3941 XKBOARD_OBJFWD (val
)->offset
= offset
;
3942 SET_SYMBOL_VALUE (sym
, val
);
3945 /* Record the value of load-path used at the start of dumping
3946 so we can see if the site changed it later during dumping. */
3947 static Lisp_Object dump_path
;
3953 int turn_off_warning
= 0;
3955 /* Compute the default load-path. */
3957 normal
= PATH_LOADSEARCH
;
3958 Vload_path
= decode_env_path (0, normal
);
3960 if (NILP (Vpurify_flag
))
3961 normal
= PATH_LOADSEARCH
;
3963 normal
= PATH_DUMPLOADSEARCH
;
3965 /* In a dumped Emacs, we normally have to reset the value of
3966 Vload_path from PATH_LOADSEARCH, since the value that was dumped
3967 uses ../lisp, instead of the path of the installed elisp
3968 libraries. However, if it appears that Vload_path was changed
3969 from the default before dumping, don't override that value. */
3972 if (! NILP (Fequal (dump_path
, Vload_path
)))
3974 Vload_path
= decode_env_path (0, normal
);
3975 if (!NILP (Vinstallation_directory
))
3977 Lisp_Object tem
, tem1
, sitelisp
;
3979 /* Remove site-lisp dirs from path temporarily and store
3980 them in sitelisp, then conc them on at the end so
3981 they're always first in path. */
3985 tem
= Fcar (Vload_path
);
3986 tem1
= Fstring_match (build_string ("site-lisp"),
3990 Vload_path
= Fcdr (Vload_path
);
3991 sitelisp
= Fcons (tem
, sitelisp
);
3997 /* Add to the path the lisp subdir of the
3998 installation dir, if it exists. */
3999 tem
= Fexpand_file_name (build_string ("lisp"),
4000 Vinstallation_directory
);
4001 tem1
= Ffile_exists_p (tem
);
4004 if (NILP (Fmember (tem
, Vload_path
)))
4006 turn_off_warning
= 1;
4007 Vload_path
= Fcons (tem
, Vload_path
);
4011 /* That dir doesn't exist, so add the build-time
4012 Lisp dirs instead. */
4013 Vload_path
= nconc2 (Vload_path
, dump_path
);
4015 /* Add leim under the installation dir, if it exists. */
4016 tem
= Fexpand_file_name (build_string ("leim"),
4017 Vinstallation_directory
);
4018 tem1
= Ffile_exists_p (tem
);
4021 if (NILP (Fmember (tem
, Vload_path
)))
4022 Vload_path
= Fcons (tem
, Vload_path
);
4025 /* Add site-lisp under the installation dir, if it exists. */
4026 tem
= Fexpand_file_name (build_string ("site-lisp"),
4027 Vinstallation_directory
);
4028 tem1
= Ffile_exists_p (tem
);
4031 if (NILP (Fmember (tem
, Vload_path
)))
4032 Vload_path
= Fcons (tem
, Vload_path
);
4035 /* If Emacs was not built in the source directory,
4036 and it is run from where it was built, add to load-path
4037 the lisp, leim and site-lisp dirs under that directory. */
4039 if (NILP (Fequal (Vinstallation_directory
, Vsource_directory
)))
4043 tem
= Fexpand_file_name (build_string ("src/Makefile"),
4044 Vinstallation_directory
);
4045 tem1
= Ffile_exists_p (tem
);
4047 /* Don't be fooled if they moved the entire source tree
4048 AFTER dumping Emacs. If the build directory is indeed
4049 different from the source dir, src/Makefile.in and
4050 src/Makefile will not be found together. */
4051 tem
= Fexpand_file_name (build_string ("src/Makefile.in"),
4052 Vinstallation_directory
);
4053 tem2
= Ffile_exists_p (tem
);
4054 if (!NILP (tem1
) && NILP (tem2
))
4056 tem
= Fexpand_file_name (build_string ("lisp"),
4059 if (NILP (Fmember (tem
, Vload_path
)))
4060 Vload_path
= Fcons (tem
, Vload_path
);
4062 tem
= Fexpand_file_name (build_string ("leim"),
4065 if (NILP (Fmember (tem
, Vload_path
)))
4066 Vload_path
= Fcons (tem
, Vload_path
);
4068 tem
= Fexpand_file_name (build_string ("site-lisp"),
4071 if (NILP (Fmember (tem
, Vload_path
)))
4072 Vload_path
= Fcons (tem
, Vload_path
);
4075 if (!NILP (sitelisp
))
4076 Vload_path
= nconc2 (Fnreverse (sitelisp
), Vload_path
);
4082 /* NORMAL refers to the lisp dir in the source directory. */
4083 /* We used to add ../lisp at the front here, but
4084 that caused trouble because it was copied from dump_path
4085 into Vload_path, above, when Vinstallation_directory was non-nil.
4086 It should be unnecessary. */
4087 Vload_path
= decode_env_path (0, normal
);
4088 dump_path
= Vload_path
;
4092 #if (!(defined(WINDOWSNT) || (defined(HAVE_NS))))
4093 /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is
4094 almost never correct, thereby causing a warning to be printed out that
4095 confuses users. Since PATH_LOADSEARCH is always overridden by the
4096 EMACSLOADPATH environment variable below, disable the warning on NT. */
4098 /* Warn if dirs in the *standard* path don't exist. */
4099 if (!turn_off_warning
)
4101 Lisp_Object path_tail
;
4103 for (path_tail
= Vload_path
;
4105 path_tail
= XCDR (path_tail
))
4107 Lisp_Object dirfile
;
4108 dirfile
= Fcar (path_tail
);
4109 if (STRINGP (dirfile
))
4111 dirfile
= Fdirectory_file_name (dirfile
);
4112 if (access (SDATA (dirfile
), 0) < 0)
4113 dir_warning ("Warning: Lisp directory `%s' does not exist.\n",
4118 #endif /* !(WINDOWSNT || HAVE_NS) */
4120 /* If the EMACSLOADPATH environment variable is set, use its value.
4121 This doesn't apply if we're dumping. */
4123 if (NILP (Vpurify_flag
)
4124 && egetenv ("EMACSLOADPATH"))
4126 Vload_path
= decode_env_path ("EMACSLOADPATH", normal
);
4130 load_in_progress
= 0;
4131 Vload_file_name
= Qnil
;
4133 load_descriptor_list
= Qnil
;
4135 Vstandard_input
= Qt
;
4136 Vloads_in_progress
= Qnil
;
4139 /* Print a warning, using format string FORMAT, that directory DIRNAME
4140 does not exist. Print it on stderr and put it in *Messages*. */
4143 dir_warning (format
, dirname
)
4145 Lisp_Object dirname
;
4148 = (char *) alloca (SCHARS (dirname
) + strlen (format
) + 5);
4150 fprintf (stderr
, format
, SDATA (dirname
));
4151 sprintf (buffer
, format
, SDATA (dirname
));
4152 /* Don't log the warning before we've initialized!! */
4154 message_dolog (buffer
, strlen (buffer
), 0, STRING_MULTIBYTE (dirname
));
4161 defsubr (&Sread_from_string
);
4163 defsubr (&Sintern_soft
);
4164 defsubr (&Sunintern
);
4165 defsubr (&Sget_load_suffixes
);
4167 defsubr (&Seval_buffer
);
4168 defsubr (&Seval_region
);
4169 defsubr (&Sread_char
);
4170 defsubr (&Sread_char_exclusive
);
4171 defsubr (&Sread_event
);
4172 defsubr (&Sget_file_char
);
4173 defsubr (&Smapatoms
);
4174 defsubr (&Slocate_file_internal
);
4176 DEFVAR_LISP ("obarray", &Vobarray
,
4177 doc
: /* Symbol table for use by `intern' and `read'.
4178 It is a vector whose length ought to be prime for best results.
4179 The vector's contents don't make sense if examined from Lisp programs;
4180 to find all the symbols in an obarray, use `mapatoms'. */);
4182 DEFVAR_LISP ("values", &Vvalues
,
4183 doc
: /* List of values of all expressions which were read, evaluated and printed.
4184 Order is reverse chronological. */);
4186 DEFVAR_LISP ("standard-input", &Vstandard_input
,
4187 doc
: /* Stream for read to get input from.
4188 See documentation of `read' for possible values. */);
4189 Vstandard_input
= Qt
;
4191 DEFVAR_LISP ("read-with-symbol-positions", &Vread_with_symbol_positions
,
4192 doc
: /* If non-nil, add position of read symbols to `read-symbol-positions-list'.
4194 If this variable is a buffer, then only forms read from that buffer
4195 will be added to `read-symbol-positions-list'.
4196 If this variable is t, then all read forms will be added.
4197 The effect of all other values other than nil are not currently
4198 defined, although they may be in the future.
4200 The positions are relative to the last call to `read' or
4201 `read-from-string'. It is probably a bad idea to set this variable at
4202 the toplevel; bind it instead. */);
4203 Vread_with_symbol_positions
= Qnil
;
4205 DEFVAR_LISP ("read-symbol-positions-list", &Vread_symbol_positions_list
,
4206 doc
: /* A list mapping read symbols to their positions.
4207 This variable is modified during calls to `read' or
4208 `read-from-string', but only when `read-with-symbol-positions' is
4211 Each element of the list looks like (SYMBOL . CHAR-POSITION), where
4212 CHAR-POSITION is an integer giving the offset of that occurrence of the
4213 symbol from the position where `read' or `read-from-string' started.
4215 Note that a symbol will appear multiple times in this list, if it was
4216 read multiple times. The list is in the same order as the symbols
4218 Vread_symbol_positions_list
= Qnil
;
4220 DEFVAR_LISP ("load-path", &Vload_path
,
4221 doc
: /* *List of directories to search for files to load.
4222 Each element is a string (directory name) or nil (try default directory).
4223 Initialized based on EMACSLOADPATH environment variable, if any,
4224 otherwise to default specified by file `epaths.h' when Emacs was built. */);
4226 DEFVAR_LISP ("load-suffixes", &Vload_suffixes
,
4227 doc
: /* List of suffixes for (compiled or source) Emacs Lisp files.
4228 This list should not include the empty string.
4229 `load' and related functions try to append these suffixes, in order,
4230 to the specified file name if a Lisp suffix is allowed or required. */);
4231 Vload_suffixes
= Fcons (build_string (".elc"),
4232 Fcons (build_string (".el"), Qnil
));
4233 DEFVAR_LISP ("load-file-rep-suffixes", &Vload_file_rep_suffixes
,
4234 doc
: /* List of suffixes that indicate representations of \
4236 This list should normally start with the empty string.
4238 Enabling Auto Compression mode appends the suffixes in
4239 `jka-compr-load-suffixes' to this list and disabling Auto Compression
4240 mode removes them again. `load' and related functions use this list to
4241 determine whether they should look for compressed versions of a file
4242 and, if so, which suffixes they should try to append to the file name
4243 in order to do so. However, if you want to customize which suffixes
4244 the loading functions recognize as compression suffixes, you should
4245 customize `jka-compr-load-suffixes' rather than the present variable. */);
4246 Vload_file_rep_suffixes
= Fcons (empty_unibyte_string
, Qnil
);
4248 DEFVAR_BOOL ("load-in-progress", &load_in_progress
,
4249 doc
: /* Non-nil if inside of `load'. */);
4251 DEFVAR_LISP ("after-load-alist", &Vafter_load_alist
,
4252 doc
: /* An alist of expressions to be evalled when particular files are loaded.
4253 Each element looks like (REGEXP-OR-FEATURE FORMS...).
4255 REGEXP-OR-FEATURE is either a regular expression to match file names, or
4256 a symbol \(a feature name).
4258 When `load' is run and the file-name argument matches an element's
4259 REGEXP-OR-FEATURE, or when `provide' is run and provides the symbol
4260 REGEXP-OR-FEATURE, the FORMS in the element are executed.
4262 An error in FORMS does not undo the load, but does prevent execution of
4263 the rest of the FORMS. */);
4264 Vafter_load_alist
= Qnil
;
4266 DEFVAR_LISP ("load-history", &Vload_history
,
4267 doc
: /* Alist mapping file names to symbols and features.
4268 Each alist element is a list that starts with a file name,
4269 except for one element (optional) that starts with nil and describes
4270 definitions evaluated from buffers not visiting files.
4272 The file name is absolute and is the true file name (i.e. it doesn't
4273 contain symbolic links) of the loaded file.
4275 The remaining elements of each list are symbols defined as variables
4276 and cons cells of the form `(provide . FEATURE)', `(require . FEATURE)',
4277 `(defun . FUNCTION)', `(autoload . SYMBOL)', `(defface . SYMBOL)'
4278 and `(t . SYMBOL)'. An element `(t . SYMBOL)' precedes an entry
4279 `(defun . FUNCTION)', and means that SYMBOL was an autoload before
4280 this file redefined it as a function.
4282 During preloading, the file name recorded is relative to the main Lisp
4283 directory. These file names are converted to absolute at startup. */);
4284 Vload_history
= Qnil
;
4286 DEFVAR_LISP ("load-file-name", &Vload_file_name
,
4287 doc
: /* Full name of file being loaded by `load'. */);
4288 Vload_file_name
= Qnil
;
4290 DEFVAR_LISP ("user-init-file", &Vuser_init_file
,
4291 doc
: /* File name, including directory, of user's initialization file.
4292 If the file loaded had extension `.elc', and the corresponding source file
4293 exists, this variable contains the name of source file, suitable for use
4294 by functions like `custom-save-all' which edit the init file.
4295 While Emacs loads and evaluates the init file, value is the real name
4296 of the file, regardless of whether or not it has the `.elc' extension. */);
4297 Vuser_init_file
= Qnil
;
4299 DEFVAR_LISP ("current-load-list", &Vcurrent_load_list
,
4300 doc
: /* Used for internal purposes by `load'. */);
4301 Vcurrent_load_list
= Qnil
;
4303 DEFVAR_LISP ("load-read-function", &Vload_read_function
,
4304 doc
: /* Function used by `load' and `eval-region' for reading expressions.
4305 The default is nil, which means use the function `read'. */);
4306 Vload_read_function
= Qnil
;
4308 DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function
,
4309 doc
: /* Function called in `load' for loading an Emacs Lisp source file.
4310 This function is for doing code conversion before reading the source file.
4311 If nil, loading is done without any code conversion.
4312 Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where
4313 FULLNAME is the full name of FILE.
4314 See `load' for the meaning of the remaining arguments. */);
4315 Vload_source_file_function
= Qnil
;
4317 DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings
,
4318 doc
: /* Non-nil means `load' should force-load all dynamic doc strings.
4319 This is useful when the file being loaded is a temporary copy. */);
4320 load_force_doc_strings
= 0;
4322 DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte
,
4323 doc
: /* Non-nil means `read' converts strings to unibyte whenever possible.
4324 This is normally bound by `load' and `eval-buffer' to control `read',
4325 and is not meant for users to change. */);
4326 load_convert_to_unibyte
= 0;
4328 DEFVAR_LISP ("source-directory", &Vsource_directory
,
4329 doc
: /* Directory in which Emacs sources were found when Emacs was built.
4330 You cannot count on them to still be there! */);
4332 = Fexpand_file_name (build_string ("../"),
4333 Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH
)));
4335 DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list
,
4336 doc
: /* List of files that were preloaded (when dumping Emacs). */);
4337 Vpreloaded_file_list
= Qnil
;
4339 DEFVAR_LISP ("byte-boolean-vars", &Vbyte_boolean_vars
,
4340 doc
: /* List of all DEFVAR_BOOL variables, used by the byte code optimizer. */);
4341 Vbyte_boolean_vars
= Qnil
;
4343 DEFVAR_BOOL ("load-dangerous-libraries", &load_dangerous_libraries
,
4344 doc
: /* Non-nil means load dangerous compiled Lisp files.
4345 Some versions of XEmacs use different byte codes than Emacs. These
4346 incompatible byte codes can make Emacs crash when it tries to execute
4348 load_dangerous_libraries
= 0;
4350 DEFVAR_LISP ("bytecomp-version-regexp", &Vbytecomp_version_regexp
,
4351 doc
: /* Regular expression matching safe to load compiled Lisp files.
4352 When Emacs loads a compiled Lisp file, it reads the first 512 bytes
4353 from the file, and matches them against this regular expression.
4354 When the regular expression matches, the file is considered to be safe
4355 to load. See also `load-dangerous-libraries'. */);
4356 Vbytecomp_version_regexp
4357 = build_string ("^;;;.\\(in Emacs version\\|bytecomp version FSF\\)");
4359 DEFVAR_LISP ("eval-buffer-list", &Veval_buffer_list
,
4360 doc
: /* List of buffers being read from by calls to `eval-buffer' and `eval-region'. */);
4361 Veval_buffer_list
= Qnil
;
4363 DEFVAR_LISP ("old-style-backquotes", &Vold_style_backquotes
,
4364 doc
: /* Set to non-nil when `read' encounters an old-style backquote. */);
4365 Vold_style_backquotes
= Qnil
;
4366 Qold_style_backquotes
= intern ("old-style-backquotes");
4367 staticpro (&Qold_style_backquotes
);
4369 /* Vsource_directory was initialized in init_lread. */
4371 load_descriptor_list
= Qnil
;
4372 staticpro (&load_descriptor_list
);
4374 Qcurrent_load_list
= intern ("current-load-list");
4375 staticpro (&Qcurrent_load_list
);
4377 Qstandard_input
= intern ("standard-input");
4378 staticpro (&Qstandard_input
);
4380 Qread_char
= intern ("read-char");
4381 staticpro (&Qread_char
);
4383 Qget_file_char
= intern ("get-file-char");
4384 staticpro (&Qget_file_char
);
4386 Qget_emacs_mule_file_char
= intern ("get-emacs-mule-file-char");
4387 staticpro (&Qget_emacs_mule_file_char
);
4389 Qload_force_doc_strings
= intern ("load-force-doc-strings");
4390 staticpro (&Qload_force_doc_strings
);
4392 Qbackquote
= intern ("`");
4393 staticpro (&Qbackquote
);
4394 Qcomma
= intern (",");
4395 staticpro (&Qcomma
);
4396 Qcomma_at
= intern (",@");
4397 staticpro (&Qcomma_at
);
4398 Qcomma_dot
= intern (",.");
4399 staticpro (&Qcomma_dot
);
4401 Qinhibit_file_name_operation
= intern ("inhibit-file-name-operation");
4402 staticpro (&Qinhibit_file_name_operation
);
4404 Qascii_character
= intern ("ascii-character");
4405 staticpro (&Qascii_character
);
4407 Qfunction
= intern ("function");
4408 staticpro (&Qfunction
);
4410 Qload
= intern ("load");
4413 Qload_file_name
= intern ("load-file-name");
4414 staticpro (&Qload_file_name
);
4416 Qeval_buffer_list
= intern ("eval-buffer-list");
4417 staticpro (&Qeval_buffer_list
);
4419 Qfile_truename
= intern ("file-truename");
4420 staticpro (&Qfile_truename
) ;
4422 Qdo_after_load_evaluation
= intern ("do-after-load-evaluation");
4423 staticpro (&Qdo_after_load_evaluation
) ;
4425 staticpro (&dump_path
);
4427 staticpro (&read_objects
);
4428 read_objects
= Qnil
;
4429 staticpro (&seen_list
);
4432 Vloads_in_progress
= Qnil
;
4433 staticpro (&Vloads_in_progress
);
4436 /* arch-tag: a0d02733-0f96-4844-a659-9fd53c4f414d
4437 (do not change this comment) */