1 /* Lisp object printing and output streams.
2 Copyright (C) 1985, 86, 88, 93, 94, 95, 97, 1998
3 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
33 #include "dispextern.h"
36 #endif /* not standalone */
38 #ifdef USE_TEXT_PROPERTIES
39 #include "intervals.h"
42 Lisp_Object Vstandard_output
, Qstandard_output
;
44 /* These are used to print like we read. */
45 extern Lisp_Object Qbackquote
, Qcomma
, Qcomma_at
, Qcomma_dot
, Qfunction
;
47 #ifdef LISP_FLOAT_TYPE
48 Lisp_Object Vfloat_output_format
, Qfloat_output_format
;
50 /* Work around a problem that happens because math.h on hpux 7
51 defines two static variables--which, in Emacs, are not really static,
52 because `static' is defined as nothing. The problem is that they are
53 defined both here and in lread.c.
54 These macros prevent the name conflict. */
55 #if defined (HPUX) && !defined (HPUX8)
56 #define _MAXLDBL print_maxldbl
57 #define _NMAXLDBL print_nmaxldbl
67 /* Default to values appropriate for IEEE floating point. */
72 #define DBL_MANT_DIG 53
78 #define DBL_MIN 2.2250738585072014e-308
81 #ifdef DBL_MIN_REPLACEMENT
83 #define DBL_MIN DBL_MIN_REPLACEMENT
86 /* Define DOUBLE_DIGITS_BOUND, an upper bound on the number of decimal digits
87 needed to express a float without losing information.
88 The general-case formula is valid for the usual case, IEEE floating point,
89 but many compilers can't optimize the formula to an integer constant,
90 so make a special case for it. */
91 #if FLT_RADIX == 2 && DBL_MANT_DIG == 53
92 #define DOUBLE_DIGITS_BOUND 17 /* IEEE floating point */
94 #define DOUBLE_DIGITS_BOUND ((int) ceil (log10 (pow (FLT_RADIX, DBL_MANT_DIG))))
97 #endif /* LISP_FLOAT_TYPE */
99 /* Avoid actual stack overflow in print. */
102 /* Detect most circularities to print finite output. */
103 #define PRINT_CIRCLE 200
104 Lisp_Object being_printed
[PRINT_CIRCLE
];
106 /* When printing into a buffer, first we put the text in this
107 block, then insert it all at once. */
110 /* Size allocated in print_buffer. */
111 int print_buffer_size
;
112 /* Chars stored in print_buffer. */
113 int print_buffer_pos
;
114 /* Bytes stored in print_buffer. */
115 int print_buffer_pos_byte
;
117 /* Maximum length of list to print in full; noninteger means
118 effectively infinity */
120 Lisp_Object Vprint_length
;
122 /* Maximum depth of list to print in full; noninteger means
123 effectively infinity. */
125 Lisp_Object Vprint_level
;
127 /* Nonzero means print newlines in strings as \n. */
129 int print_escape_newlines
;
131 Lisp_Object Qprint_escape_newlines
;
133 /* Nonzero means print (quote foo) forms as 'foo, etc. */
137 /* Non-nil means print #: before uninterned symbols.
138 Neither t nor nil means so that and don't clear Vprint_gensym_alist
139 on entry to and exit from print functions. */
141 Lisp_Object Vprint_gensym
;
143 /* Association list of certain objects that are `eq' in the form being
144 printed and which should be `eq' when read back in, using the #n=object
145 and #n# reader forms. Each element has the form (object . n). */
147 Lisp_Object Vprint_gensym_alist
;
149 /* Nonzero means print newline to stdout before next minibuffer message.
150 Defined in xdisp.c */
152 extern int noninteractive_need_newline
;
154 extern int minibuffer_auto_raise
;
156 #ifdef MAX_PRINT_CHARS
157 static int print_chars
;
158 static int max_print
;
159 #endif /* MAX_PRINT_CHARS */
161 void print_interval ();
164 /* Convert between chars and GLYPHs */
168 register GLYPH
*glyphs
;
178 str_to_glyph_cpy (str
, glyphs
)
182 register GLYPH
*gp
= glyphs
;
183 register char *cp
= str
;
190 str_to_glyph_ncpy (str
, glyphs
, n
)
195 register GLYPH
*gp
= glyphs
;
196 register char *cp
= str
;
203 glyph_to_str_cpy (glyphs
, str
)
207 register GLYPH
*gp
= glyphs
;
208 register char *cp
= str
;
211 *str
++ = *gp
++ & 0377;
215 /* Low level output routines for characters and strings */
217 /* Lisp functions to do output using a stream
218 must have the stream in a variable called printcharfun
219 and must start with PRINTPREPARE, end with PRINTFINISH,
220 and use PRINTDECLARE to declare common variables.
221 Use PRINTCHAR to output one character,
222 or call strout to output a block of characters.
225 #define PRINTDECLARE \
226 struct buffer *old = current_buffer; \
227 int old_point = -1, start_point; \
228 int old_point_byte, start_point_byte; \
229 int specpdl_count = specpdl_ptr - specpdl; \
230 int free_print_buffer = 0; \
233 #define PRINTPREPARE \
234 original = printcharfun; \
235 if (NILP (printcharfun)) printcharfun = Qt; \
236 if (BUFFERP (printcharfun)) \
238 if (XBUFFER (printcharfun) != current_buffer) \
239 Fset_buffer (printcharfun); \
240 printcharfun = Qnil; \
242 if (MARKERP (printcharfun)) \
244 if (!(XMARKER (original)->buffer)) \
245 error ("Marker does not point anywhere"); \
246 if (XMARKER (original)->buffer != current_buffer) \
247 set_buffer_internal (XMARKER (original)->buffer); \
249 old_point_byte = PT_BYTE; \
250 SET_PT_BOTH (marker_position (printcharfun), \
251 marker_byte_position (printcharfun)); \
253 start_point_byte = PT_BYTE; \
254 printcharfun = Qnil; \
256 if (NILP (printcharfun)) \
258 Lisp_Object string; \
259 if (print_buffer != 0) \
261 string = make_string_from_bytes (print_buffer, \
263 print_buffer_pos_byte); \
264 record_unwind_protect (print_unwind, string); \
268 print_buffer_size = 1000; \
269 print_buffer = (char *) xmalloc (print_buffer_size); \
270 free_print_buffer = 1; \
272 print_buffer_pos = 0; \
273 print_buffer_pos_byte = 0; \
275 if (!CONSP (Vprint_gensym)) \
276 Vprint_gensym_alist = Qnil
278 #define PRINTFINISH \
279 if (NILP (printcharfun)) \
280 insert_1_both (print_buffer, print_buffer_pos, \
281 print_buffer_pos_byte, 0, 1, 0); \
282 if (free_print_buffer) \
284 xfree (print_buffer); \
287 unbind_to (specpdl_count, Qnil); \
288 if (MARKERP (original)) \
289 set_marker_both (original, Qnil, PT, PT_BYTE); \
290 if (old_point >= 0) \
291 SET_PT_BOTH (old_point + (old_point >= start_point \
292 ? PT - start_point : 0), \
293 old_point_byte + (old_point_byte >= start_point_byte \
294 ? PT_BYTE - start_point_byte : 0)); \
295 if (old != current_buffer) \
296 set_buffer_internal (old); \
297 if (!CONSP (Vprint_gensym)) \
298 Vprint_gensym_alist = Qnil
300 #define PRINTCHAR(ch) printchar (ch, printcharfun)
302 /* Nonzero if there is no room to print any more characters
303 so print might as well return right away. */
305 #define PRINTFULLP() \
306 (EQ (printcharfun, Qt) && !noninteractive \
307 && printbufidx >= FRAME_WIDTH (XFRAME (WINDOW_FRAME (XWINDOW (minibuf_window)))))
309 /* This is used to restore the saved contents of print_buffer
310 when there is a recursive call to print. */
312 print_unwind (saved_text
)
313 Lisp_Object saved_text
;
315 bcopy (XSTRING (saved_text
)->data
, print_buffer
, XSTRING (saved_text
)->size
);
318 /* Index of first unused element of FRAME_MESSAGE_BUF (mini_frame). */
319 static int printbufidx
;
328 #ifdef MAX_PRINT_CHARS
331 #endif /* MAX_PRINT_CHARS */
336 unsigned char work
[4], *str
;
339 len
= CHAR_STRING (ch
, work
, str
);
340 if (print_buffer_pos_byte
+ len
>= print_buffer_size
)
341 print_buffer
= (char *) xrealloc (print_buffer
,
342 print_buffer_size
*= 2);
343 bcopy (str
, print_buffer
+ print_buffer_pos_byte
, len
);
344 print_buffer_pos
+= 1;
345 print_buffer_pos_byte
+= len
;
352 = XFRAME (WINDOW_FRAME (XWINDOW (minibuf_window
)));
353 unsigned char work
[4], *str
;
354 int len
= CHAR_STRING (ch
, work
, str
);
361 putchar (*str
), str
++;
362 noninteractive_need_newline
= 1;
366 if (echo_area_glyphs
!= FRAME_MESSAGE_BUF (mini_frame
)
367 || !message_buf_print
)
369 message_log_maybe_newline ();
370 echo_area_glyphs
= FRAME_MESSAGE_BUF (mini_frame
);
372 echo_area_glyphs_length
= 0;
373 message_buf_print
= 1;
375 if (minibuffer_auto_raise
)
377 Lisp_Object mini_window
;
379 /* Get the frame containing the minibuffer
380 that the selected frame is using. */
381 mini_window
= FRAME_MINIBUF_WINDOW (selected_frame
);
383 Fraise_frame (WINDOW_FRAME (XWINDOW (mini_window
)));
387 message_dolog (str
, len
, 0, len
> 1);
389 /* Convert message to multibyte if we are now adding multibyte text. */
390 if (! NILP (current_buffer
->enable_multibyte_characters
)
391 && ! message_enable_multibyte
394 int size
= count_size_as_multibyte (FRAME_MESSAGE_BUF (mini_frame
),
396 unsigned char *tembuf
= (unsigned char *) alloca (size
+ 1);
397 copy_text (FRAME_MESSAGE_BUF (mini_frame
), tembuf
, printbufidx
,
400 if (printbufidx
> FRAME_MESSAGE_BUF_SIZE (mini_frame
))
402 printbufidx
= FRAME_MESSAGE_BUF_SIZE (mini_frame
);
403 /* Rewind incomplete multi-byte form. */
404 while (printbufidx
> 0 && tembuf
[printbufidx
] >= 0xA0)
407 bcopy (tembuf
, FRAME_MESSAGE_BUF (mini_frame
), printbufidx
);
408 message_enable_multibyte
= 1;
411 if (printbufidx
< FRAME_MESSAGE_BUF_SIZE (mini_frame
) - len
)
412 bcopy (str
, &FRAME_MESSAGE_BUF (mini_frame
)[printbufidx
], len
),
414 FRAME_MESSAGE_BUF (mini_frame
)[printbufidx
] = 0;
415 echo_area_glyphs_length
= printbufidx
;
419 #endif /* not standalone */
421 XSETFASTINT (ch1
, ch
);
426 strout (ptr
, size
, size_byte
, printcharfun
, multibyte
)
429 Lisp_Object printcharfun
;
435 size_byte
= size
= strlen (ptr
);
437 if (EQ (printcharfun
, Qnil
))
439 if (print_buffer_pos_byte
+ size_byte
> print_buffer_size
)
441 print_buffer_size
= print_buffer_size
* 2 + size_byte
;
442 print_buffer
= (char *) xrealloc (print_buffer
,
445 bcopy (ptr
, print_buffer
+ print_buffer_pos_byte
, size_byte
);
446 print_buffer_pos
+= size
;
447 print_buffer_pos_byte
+= size_byte
;
449 #ifdef MAX_PRINT_CHARS
452 #endif /* MAX_PRINT_CHARS */
455 if (EQ (printcharfun
, Qt
))
458 = XFRAME (WINDOW_FRAME (XWINDOW (minibuf_window
)));
462 #ifdef MAX_PRINT_CHARS
465 #endif /* MAX_PRINT_CHARS */
469 fwrite (ptr
, 1, size_byte
, stdout
);
470 noninteractive_need_newline
= 1;
474 if (echo_area_glyphs
!= FRAME_MESSAGE_BUF (mini_frame
)
475 || !message_buf_print
)
477 message_log_maybe_newline ();
478 echo_area_glyphs
= FRAME_MESSAGE_BUF (mini_frame
);
480 echo_area_glyphs_length
= 0;
481 message_buf_print
= 1;
483 if (minibuffer_auto_raise
)
485 Lisp_Object mini_window
;
487 /* Get the frame containing the minibuffer
488 that the selected frame is using. */
489 mini_window
= FRAME_MINIBUF_WINDOW (selected_frame
);
491 Fraise_frame (WINDOW_FRAME (XWINDOW (mini_window
)));
495 message_dolog (ptr
, size_byte
, 0, multibyte
);
497 /* Convert message to multibyte if we are now adding multibyte text. */
499 && ! message_enable_multibyte
502 int size
= count_size_as_multibyte (FRAME_MESSAGE_BUF (mini_frame
),
504 unsigned char *tembuf
= (unsigned char *) alloca (size
+ 1);
505 copy_text (FRAME_MESSAGE_BUF (mini_frame
), tembuf
, printbufidx
,
508 if (printbufidx
> FRAME_MESSAGE_BUF_SIZE (mini_frame
))
510 printbufidx
= FRAME_MESSAGE_BUF_SIZE (mini_frame
);
511 /* Rewind incomplete multi-byte form. */
512 while (printbufidx
> 0 && tembuf
[printbufidx
] >= 0xA0)
516 bcopy (tembuf
, FRAME_MESSAGE_BUF (mini_frame
), printbufidx
);
517 message_enable_multibyte
= 1;
520 /* Compute how much of the new text will fit there. */
521 if (size_byte
> FRAME_MESSAGE_BUF_SIZE (mini_frame
) - printbufidx
- 1)
523 size_byte
= FRAME_MESSAGE_BUF_SIZE (mini_frame
) - printbufidx
- 1;
524 /* Rewind incomplete multi-byte form. */
525 while (size_byte
&& (unsigned char) ptr
[size_byte
] >= 0xA0)
529 /* Put that part of the new text in. */
530 bcopy (ptr
, &FRAME_MESSAGE_BUF (mini_frame
) [printbufidx
], size_byte
);
531 printbufidx
+= size_byte
;
532 FRAME_MESSAGE_BUF (mini_frame
) [printbufidx
] = 0;
533 echo_area_glyphs_length
= printbufidx
;
539 if (size
== size_byte
)
540 while (i
< size_byte
)
547 while (i
< size_byte
)
549 /* Here, we must convert each multi-byte form to the
550 corresponding character code before handing it to PRINTCHAR. */
552 int ch
= STRING_CHAR_AND_LENGTH (ptr
+ i
, size_byte
- i
, len
);
559 /* Print the contents of a string STRING using PRINTCHARFUN.
560 It isn't safe to use strout in many cases,
561 because printing one char can relocate. */
564 print_string (string
, printcharfun
)
566 Lisp_Object printcharfun
;
568 if (EQ (printcharfun
, Qt
) || NILP (printcharfun
))
569 /* strout is safe for output to a frame (echo area) or to print_buffer. */
570 strout (XSTRING (string
)->data
,
571 XSTRING (string
)->size
,
572 STRING_BYTES (XSTRING (string
)),
573 printcharfun
, STRING_MULTIBYTE (string
));
576 /* Otherwise, string may be relocated by printing one char.
577 So re-fetch the string address for each character. */
579 int size
= XSTRING (string
)->size
;
580 int size_byte
= STRING_BYTES (XSTRING (string
));
583 if (size
== size_byte
)
584 for (i
= 0; i
< size
; i
++)
585 PRINTCHAR (XSTRING (string
)->data
[i
]);
587 for (i
= 0; i
< size_byte
; i
++)
589 /* Here, we must convert each multi-byte form to the
590 corresponding character code before handing it to PRINTCHAR. */
592 int ch
= STRING_CHAR_AND_LENGTH (XSTRING (string
)->data
+ i
,
602 DEFUN ("write-char", Fwrite_char
, Swrite_char
, 1, 2, 0,
603 "Output character CHARACTER to stream PRINTCHARFUN.\n\
604 PRINTCHARFUN defaults to the value of `standard-output' (which see).")
605 (character
, printcharfun
)
606 Lisp_Object character
, printcharfun
;
610 if (NILP (printcharfun
))
611 printcharfun
= Vstandard_output
;
612 CHECK_NUMBER (character
, 0);
614 PRINTCHAR (XINT (character
));
619 /* Used from outside of print.c to print a block of SIZE
620 single-byte chars at DATA on the default output stream.
621 Do not use this on the contents of a Lisp string. */
624 write_string (data
, size
)
629 Lisp_Object printcharfun
;
631 printcharfun
= Vstandard_output
;
634 strout (data
, size
, size
, printcharfun
, 0);
638 /* Used from outside of print.c to print a block of SIZE
639 single-byte chars at DATA on a specified stream PRINTCHARFUN.
640 Do not use this on the contents of a Lisp string. */
643 write_string_1 (data
, size
, printcharfun
)
646 Lisp_Object printcharfun
;
651 strout (data
, size
, size
, printcharfun
, 0);
659 temp_output_buffer_setup (bufname
)
662 register struct buffer
*old
= current_buffer
;
663 register Lisp_Object buf
;
665 Fset_buffer (Fget_buffer_create (build_string (bufname
)));
667 current_buffer
->directory
= old
->directory
;
668 current_buffer
->read_only
= Qnil
;
669 current_buffer
->filename
= Qnil
;
670 current_buffer
->undo_list
= Qt
;
671 current_buffer
->overlays_before
= Qnil
;
672 current_buffer
->overlays_after
= Qnil
;
673 current_buffer
->enable_multibyte_characters
674 = buffer_defaults
.enable_multibyte_characters
;
677 XSETBUFFER (buf
, current_buffer
);
678 specbind (Qstandard_output
, buf
);
680 set_buffer_internal (old
);
684 internal_with_output_to_temp_buffer (bufname
, function
, args
)
686 Lisp_Object (*function
) P_ ((Lisp_Object
));
689 int count
= specpdl_ptr
- specpdl
;
690 Lisp_Object buf
, val
;
694 record_unwind_protect (Fset_buffer
, Fcurrent_buffer ());
695 temp_output_buffer_setup (bufname
);
696 buf
= Vstandard_output
;
699 val
= (*function
) (args
);
702 temp_output_buffer_show (buf
);
705 return unbind_to (count
, val
);
708 DEFUN ("with-output-to-temp-buffer", Fwith_output_to_temp_buffer
, Swith_output_to_temp_buffer
,
710 "Bind `standard-output' to buffer BUFNAME, eval BODY, then show that buffer.\n\
711 The buffer is cleared out initially, and marked as unmodified when done.\n\
712 All output done by BODY is inserted in that buffer by default.\n\
713 The buffer is displayed in another window, but not selected.\n\
714 The value of the last form in BODY is returned.\n\
715 If BODY does not finish normally, the buffer BUFNAME is not displayed.\n\n\
716 If variable `temp-buffer-show-function' is non-nil, call it at the end\n\
717 to get the buffer displayed. It gets one argument, the buffer to display.")
723 int count
= specpdl_ptr
- specpdl
;
724 Lisp_Object buf
, val
;
727 name
= Feval (Fcar (args
));
730 CHECK_STRING (name
, 0);
731 temp_output_buffer_setup (XSTRING (name
)->data
);
732 buf
= Vstandard_output
;
734 val
= Fprogn (Fcdr (args
));
736 temp_output_buffer_show (buf
);
738 return unbind_to (count
, val
);
740 #endif /* not standalone */
742 static void print ();
744 DEFUN ("terpri", Fterpri
, Sterpri
, 0, 1, 0,
745 "Output a newline to stream PRINTCHARFUN.\n\
746 If PRINTCHARFUN is omitted or nil, the value of `standard-output' is used.")
748 Lisp_Object printcharfun
;
752 if (NILP (printcharfun
))
753 printcharfun
= Vstandard_output
;
760 DEFUN ("prin1", Fprin1
, Sprin1
, 1, 2, 0,
761 "Output the printed representation of OBJECT, any Lisp object.\n\
762 Quoting characters are printed when needed to make output that `read'\n\
763 can handle, whenever this is possible.\n\
764 Output stream is PRINTCHARFUN, or value of `standard-output' (which see).")
765 (object
, printcharfun
)
766 Lisp_Object object
, printcharfun
;
770 #ifdef MAX_PRINT_CHARS
772 #endif /* MAX_PRINT_CHARS */
773 if (NILP (printcharfun
))
774 printcharfun
= Vstandard_output
;
777 print (object
, printcharfun
, 1);
782 /* a buffer which is used to hold output being built by prin1-to-string */
783 Lisp_Object Vprin1_to_string_buffer
;
785 DEFUN ("prin1-to-string", Fprin1_to_string
, Sprin1_to_string
, 1, 2, 0,
786 "Return a string containing the printed representation of OBJECT,\n\
787 any Lisp object. Quoting characters are used when needed to make output\n\
788 that `read' can handle, whenever this is possible, unless the optional\n\
789 second argument NOESCAPE is non-nil.")
791 Lisp_Object object
, noescape
;
794 Lisp_Object printcharfun
;
795 struct gcpro gcpro1
, gcpro2
;
798 /* Save and restore this--we are altering a buffer
799 but we don't want to deactivate the mark just for that.
800 No need for specbind, since errors deactivate the mark. */
801 tem
= Vdeactivate_mark
;
802 GCPRO2 (object
, tem
);
804 printcharfun
= Vprin1_to_string_buffer
;
807 print (object
, printcharfun
, NILP (noescape
));
808 /* Make Vprin1_to_string_buffer be the default buffer after PRINTFINSH */
810 set_buffer_internal (XBUFFER (Vprin1_to_string_buffer
));
811 object
= Fbuffer_string ();
814 set_buffer_internal (old
);
816 Vdeactivate_mark
= tem
;
822 DEFUN ("princ", Fprinc
, Sprinc
, 1, 2, 0,
823 "Output the printed representation of OBJECT, any Lisp object.\n\
824 No quoting characters are used; no delimiters are printed around\n\
825 the contents of strings.\n\
826 Output stream is PRINTCHARFUN, or value of standard-output (which see).")
827 (object
, printcharfun
)
828 Lisp_Object object
, printcharfun
;
832 if (NILP (printcharfun
))
833 printcharfun
= Vstandard_output
;
836 print (object
, printcharfun
, 0);
841 DEFUN ("print", Fprint
, Sprint
, 1, 2, 0,
842 "Output the printed representation of OBJECT, with newlines around it.\n\
843 Quoting characters are printed when needed to make output that `read'\n\
844 can handle, whenever this is possible.\n\
845 Output stream is PRINTCHARFUN, or value of `standard-output' (which see).")
846 (object
, printcharfun
)
847 Lisp_Object object
, printcharfun
;
852 #ifdef MAX_PRINT_CHARS
854 max_print
= MAX_PRINT_CHARS
;
855 #endif /* MAX_PRINT_CHARS */
856 if (NILP (printcharfun
))
857 printcharfun
= Vstandard_output
;
862 print (object
, printcharfun
, 1);
865 #ifdef MAX_PRINT_CHARS
868 #endif /* MAX_PRINT_CHARS */
873 /* The subroutine object for external-debugging-output is kept here
874 for the convenience of the debugger. */
875 Lisp_Object Qexternal_debugging_output
;
877 DEFUN ("external-debugging-output", Fexternal_debugging_output
, Sexternal_debugging_output
, 1, 1, 0,
878 "Write CHARACTER to stderr.\n\
879 You can call print while debugging emacs, and pass it this function\n\
880 to make it write to the debugging output.\n")
882 Lisp_Object character
;
884 CHECK_NUMBER (character
, 0);
885 putc (XINT (character
), stderr
);
888 /* Send the output to a debugger (nothing happens if there isn't one). */
890 char buf
[2] = {(char) XINT (character
), '\0'};
891 OutputDebugString (buf
);
898 /* This is the interface for debugging printing. */
904 Fprin1 (arg
, Qexternal_debugging_output
);
905 fprintf (stderr
, "\r\n");
908 DEFUN ("error-message-string", Ferror_message_string
, Serror_message_string
,
910 "Convert an error value (ERROR-SYMBOL . DATA) to an error message.")
914 struct buffer
*old
= current_buffer
;
915 Lisp_Object original
, printcharfun
, value
;
918 /* If OBJ is (error STRING), just return STRING.
919 That is not only faster, it also avoids the need to allocate
920 space here when the error is due to memory full. */
921 if (CONSP (obj
) && EQ (XCONS (obj
)->car
, Qerror
)
922 && CONSP (XCONS (obj
)->cdr
)
923 && STRINGP (XCONS (XCONS (obj
)->cdr
)->car
)
924 && NILP (XCONS (XCONS (obj
)->cdr
)->cdr
))
925 return XCONS (XCONS (obj
)->cdr
)->car
;
927 print_error_message (obj
, Vprin1_to_string_buffer
);
929 set_buffer_internal (XBUFFER (Vprin1_to_string_buffer
));
930 value
= Fbuffer_string ();
934 set_buffer_internal (old
);
940 /* Print an error message for the error DATA
941 onto Lisp output stream STREAM (suitable for the print functions). */
944 print_error_message (data
, stream
)
945 Lisp_Object data
, stream
;
947 Lisp_Object errname
, errmsg
, file_error
, tail
;
951 errname
= Fcar (data
);
953 if (EQ (errname
, Qerror
))
956 if (!CONSP (data
)) data
= Qnil
;
957 errmsg
= Fcar (data
);
962 errmsg
= Fget (errname
, Qerror_message
);
963 file_error
= Fmemq (Qfile_error
,
964 Fget (errname
, Qerror_conditions
));
967 /* Print an error message including the data items. */
969 tail
= Fcdr_safe (data
);
972 /* For file-error, make error message by concatenating
973 all the data items. They are all strings. */
974 if (!NILP (file_error
) && !NILP (tail
))
975 errmsg
= XCONS (tail
)->car
, tail
= XCONS (tail
)->cdr
;
977 if (STRINGP (errmsg
))
978 Fprinc (errmsg
, stream
);
980 write_string_1 ("peculiar error", -1, stream
);
982 for (i
= 0; CONSP (tail
); tail
= Fcdr (tail
), i
++)
984 write_string_1 (i
? ", " : ": ", 2, stream
);
985 if (!NILP (file_error
))
986 Fprinc (Fcar (tail
), stream
);
988 Fprin1 (Fcar (tail
), stream
);
993 #ifdef LISP_FLOAT_TYPE
996 * The buffer should be at least as large as the max string size of the
997 * largest float, printed in the biggest notation. This is undoubtedly
998 * 20d float_output_format, with the negative of the C-constant "HUGE"
1001 * On the vax the worst case is -1e38 in 20d format which takes 61 bytes.
1003 * I assume that IEEE-754 format numbers can take 329 bytes for the worst
1004 * case of -1e307 in 20d float_output_format. What is one to do (short of
1005 * re-writing _doprnt to be more sane)?
1010 float_to_string (buf
, data
)
1017 /* Check for plus infinity in a way that won't lose
1018 if there is no plus infinity. */
1019 if (data
== data
/ 2 && data
> 1.0)
1021 strcpy (buf
, "1.0e+INF");
1024 /* Likewise for minus infinity. */
1025 if (data
== data
/ 2 && data
< -1.0)
1027 strcpy (buf
, "-1.0e+INF");
1030 /* Check for NaN in a way that won't fail if there are no NaNs. */
1031 if (! (data
* 0.0 >= 0.0))
1033 strcpy (buf
, "0.0e+NaN");
1037 if (NILP (Vfloat_output_format
)
1038 || !STRINGP (Vfloat_output_format
))
1041 /* Generate the fewest number of digits that represent the
1042 floating point value without losing information.
1043 The following method is simple but a bit slow.
1044 For ideas about speeding things up, please see:
1046 Guy L Steele Jr & Jon L White, How to print floating-point numbers
1047 accurately. SIGPLAN notices 25, 6 (June 1990), 112-126.
1049 Robert G Burger & R Kent Dybvig, Printing floating point numbers
1050 quickly and accurately, SIGPLAN notices 31, 5 (May 1996), 108-116. */
1052 width
= fabs (data
) < DBL_MIN
? 1 : DBL_DIG
;
1054 sprintf (buf
, "%.*g", width
, data
);
1055 while (width
++ < DOUBLE_DIGITS_BOUND
&& atof (buf
) != data
);
1057 else /* oink oink */
1059 /* Check that the spec we have is fully valid.
1060 This means not only valid for printf,
1061 but meant for floats, and reasonable. */
1062 cp
= XSTRING (Vfloat_output_format
)->data
;
1071 /* Check the width specification. */
1073 if ('0' <= *cp
&& *cp
<= '9')
1077 width
= (width
* 10) + (*cp
++ - '0');
1078 while (*cp
>= '0' && *cp
<= '9');
1080 /* A precision of zero is valid only for %f. */
1082 || (width
== 0 && *cp
!= 'f'))
1086 if (*cp
!= 'e' && *cp
!= 'f' && *cp
!= 'g')
1092 sprintf (buf
, XSTRING (Vfloat_output_format
)->data
, data
);
1095 /* Make sure there is a decimal point with digit after, or an
1096 exponent, so that the value is readable as a float. But don't do
1097 this with "%.0f"; it's valid for that not to produce a decimal
1098 point. Note that width can be 0 only for %.0f. */
1101 for (cp
= buf
; *cp
; cp
++)
1102 if ((*cp
< '0' || *cp
> '9') && *cp
!= '-')
1105 if (*cp
== '.' && cp
[1] == 0)
1119 #endif /* LISP_FLOAT_TYPE */
1122 print (obj
, printcharfun
, escapeflag
)
1124 register Lisp_Object printcharfun
;
1131 #if 1 /* I'm not sure this is really worth doing. */
1132 /* Detect circularities and truncate them.
1133 No need to offer any alternative--this is better than an error. */
1134 if (CONSP (obj
) || VECTORP (obj
) || COMPILEDP (obj
))
1137 for (i
= 0; i
< print_depth
; i
++)
1138 if (EQ (obj
, being_printed
[i
]))
1140 sprintf (buf
, "#%d", i
);
1141 strout (buf
, -1, -1, printcharfun
, 0);
1147 being_printed
[print_depth
] = obj
;
1150 if (print_depth
> PRINT_CIRCLE
)
1151 error ("Apparently circular structure being printed");
1152 #ifdef MAX_PRINT_CHARS
1153 if (max_print
&& print_chars
> max_print
)
1158 #endif /* MAX_PRINT_CHARS */
1160 switch (XGCTYPE (obj
))
1163 if (sizeof (int) == sizeof (EMACS_INT
))
1164 sprintf (buf
, "%d", XINT (obj
));
1165 else if (sizeof (long) == sizeof (EMACS_INT
))
1166 sprintf (buf
, "%ld", XINT (obj
));
1169 strout (buf
, -1, -1, printcharfun
, 0);
1172 #ifdef LISP_FLOAT_TYPE
1175 char pigbuf
[350]; /* see comments in float_to_string */
1177 float_to_string (pigbuf
, XFLOAT(obj
)->data
);
1178 strout (pigbuf
, -1, -1, printcharfun
, 0);
1185 print_string (obj
, printcharfun
);
1188 register int i
, i_byte
;
1189 register unsigned char c
;
1190 struct gcpro gcpro1
;
1192 /* 1 means we must ensure that the next character we output
1193 cannot be taken as part of a hex character escape. */
1194 int need_nonhex
= 0;
1198 #ifdef USE_TEXT_PROPERTIES
1199 if (!NULL_INTERVAL_P (XSTRING (obj
)->intervals
))
1207 size_byte
= STRING_BYTES (XSTRING (obj
));
1209 for (i
= 0, i_byte
= 0; i_byte
< size_byte
;)
1211 /* Here, we must convert each multi-byte form to the
1212 corresponding character code before handing it to PRINTCHAR. */
1216 if (STRING_MULTIBYTE (obj
))
1217 FETCH_STRING_CHAR_ADVANCE (c
, obj
, i
, i_byte
);
1219 c
= XSTRING (obj
)->data
[i_byte
++];
1223 if (c
== '\n' && print_escape_newlines
)
1228 else if (c
== '\f' && print_escape_newlines
)
1233 else if ((! SINGLE_BYTE_CHAR_P (c
)
1234 && NILP (current_buffer
->enable_multibyte_characters
)))
1236 /* When multibyte is disabled,
1237 print multibyte string chars using hex escapes. */
1238 unsigned char outbuf
[50];
1239 sprintf (outbuf
, "\\x%x", c
);
1240 strout (outbuf
, -1, -1, printcharfun
, 0);
1243 else if (SINGLE_BYTE_CHAR_P (c
)
1244 && ! ASCII_BYTE_P (c
)
1245 && ! NILP (current_buffer
->enable_multibyte_characters
))
1247 /* When multibyte is enabled,
1248 print single-byte non-ASCII string chars
1249 using octal escapes. */
1250 unsigned char outbuf
[5];
1251 sprintf (outbuf
, "\\%03o", c
);
1252 strout (outbuf
, -1, -1, printcharfun
, 0);
1256 /* If we just had a hex escape, and this character
1257 could be taken as part of it,
1258 output `\ ' to prevent that. */
1262 if ((c
>= 'a' && c
<= 'f')
1263 || (c
>= 'A' && c
<= 'F')
1264 || (c
>= '0' && c
<= '9'))
1265 strout ("\\ ", -1, -1, printcharfun
, 0);
1268 if (c
== '\"' || c
== '\\')
1275 #ifdef USE_TEXT_PROPERTIES
1276 if (!NULL_INTERVAL_P (XSTRING (obj
)->intervals
))
1278 traverse_intervals (XSTRING (obj
)->intervals
,
1279 0, 0, print_interval
, printcharfun
);
1290 register int confusing
;
1291 register unsigned char *p
= XSYMBOL (obj
)->name
->data
;
1292 register unsigned char *end
= p
+ STRING_BYTES (XSYMBOL (obj
)->name
);
1294 int i
, i_byte
, size_byte
;
1297 XSETSTRING (name
, XSYMBOL (obj
)->name
);
1299 if (p
!= end
&& (*p
== '-' || *p
== '+')) p
++;
1302 /* If symbol name begins with a digit, and ends with a digit,
1303 and contains nothing but digits and `e', it could be treated
1304 as a number. So set CONFUSING.
1306 Symbols that contain periods could also be taken as numbers,
1307 but periods are always escaped, so we don't have to worry
1309 else if (*p
>= '0' && *p
<= '9'
1310 && end
[-1] >= '0' && end
[-1] <= '9')
1312 while (p
!= end
&& ((*p
>= '0' && *p
<= '9')
1313 /* Needed for \2e10. */
1316 confusing
= (end
== p
);
1321 /* If we print an uninterned symbol as part of a complex object and
1322 the flag print-gensym is non-nil, prefix it with #n= to read the
1323 object back with the #n# reader syntax later if needed. */
1324 if (! NILP (Vprint_gensym
) && NILP (XSYMBOL (obj
)->obarray
))
1326 if (print_depth
> 1)
1329 tem
= Fassq (obj
, Vprint_gensym_alist
);
1333 print (XCDR (tem
), printcharfun
, escapeflag
);
1339 if (CONSP (Vprint_gensym_alist
))
1340 XSETFASTINT (tem
, XFASTINT (XCDR (XCAR (Vprint_gensym_alist
))) + 1);
1342 XSETFASTINT (tem
, 1);
1343 Vprint_gensym_alist
= Fcons (Fcons (obj
, tem
), Vprint_gensym_alist
);
1346 print (tem
, printcharfun
, escapeflag
);
1354 size_byte
= STRING_BYTES (XSTRING (name
));
1356 for (i
= 0, i_byte
= 0; i_byte
< size_byte
;)
1358 /* Here, we must convert each multi-byte form to the
1359 corresponding character code before handing it to PRINTCHAR. */
1361 if (STRING_MULTIBYTE (name
))
1362 FETCH_STRING_CHAR_ADVANCE (c
, name
, i
, i_byte
);
1364 c
= XSTRING (name
)->data
[i_byte
++];
1370 if (c
== '\"' || c
== '\\' || c
== '\''
1371 || c
== ';' || c
== '#' || c
== '(' || c
== ')'
1372 || c
== ',' || c
=='.' || c
== '`'
1373 || c
== '[' || c
== ']' || c
== '?' || c
<= 040
1375 PRINTCHAR ('\\'), confusing
= 0;
1383 /* If deeper than spec'd depth, print placeholder. */
1384 if (INTEGERP (Vprint_level
)
1385 && print_depth
> XINT (Vprint_level
))
1386 strout ("...", -1, -1, printcharfun
, 0);
1387 else if (print_quoted
&& CONSP (XCDR (obj
)) && NILP (XCDR (XCDR (obj
)))
1388 && (EQ (XCAR (obj
), Qquote
)))
1391 print (XCAR (XCDR (obj
)), printcharfun
, escapeflag
);
1393 else if (print_quoted
&& CONSP (XCDR (obj
)) && NILP (XCDR (XCDR (obj
)))
1394 && (EQ (XCAR (obj
), Qfunction
)))
1398 print (XCAR (XCDR (obj
)), printcharfun
, escapeflag
);
1400 else if (print_quoted
&& CONSP (XCDR (obj
)) && NILP (XCDR (XCDR (obj
)))
1401 && ((EQ (XCAR (obj
), Qbackquote
)
1402 || EQ (XCAR (obj
), Qcomma
)
1403 || EQ (XCAR (obj
), Qcomma_at
)
1404 || EQ (XCAR (obj
), Qcomma_dot
))))
1406 print (XCAR (obj
), printcharfun
, 0);
1407 print (XCAR (XCDR (obj
)), printcharfun
, escapeflag
);
1414 register int print_length
= 0;
1416 if (INTEGERP (Vprint_length
))
1417 print_length
= XINT (Vprint_length
);
1418 /* Could recognize circularities in cdrs here,
1419 but that would make printing of long lists quadratic.
1420 It's not worth doing. */
1425 if (print_length
&& i
> print_length
)
1427 strout ("...", 3, 3, printcharfun
, 0);
1430 print (XCAR (obj
), printcharfun
, escapeflag
);
1436 strout (" . ", 3, 3, printcharfun
, 0);
1437 print (obj
, printcharfun
, escapeflag
);
1443 case Lisp_Vectorlike
:
1448 strout ("#<process ", -1, -1, printcharfun
, 0);
1449 print_string (XPROCESS (obj
)->name
, printcharfun
);
1453 print_string (XPROCESS (obj
)->name
, printcharfun
);
1455 else if (BOOL_VECTOR_P (obj
))
1458 register unsigned char c
;
1459 struct gcpro gcpro1
;
1461 = (XBOOL_VECTOR (obj
)->size
+ BITS_PER_CHAR
- 1) / BITS_PER_CHAR
;
1467 sprintf (buf
, "%d", XBOOL_VECTOR (obj
)->size
);
1468 strout (buf
, -1, -1, printcharfun
, 0);
1471 /* Don't print more characters than the specified maximum. */
1472 if (INTEGERP (Vprint_length
)
1473 && XINT (Vprint_length
) < size_in_chars
)
1474 size_in_chars
= XINT (Vprint_length
);
1476 for (i
= 0; i
< size_in_chars
; i
++)
1479 c
= XBOOL_VECTOR (obj
)->data
[i
];
1480 if (c
== '\n' && print_escape_newlines
)
1485 else if (c
== '\f' && print_escape_newlines
)
1492 if (c
== '\"' || c
== '\\')
1501 else if (SUBRP (obj
))
1503 strout ("#<subr ", -1, -1, printcharfun
, 0);
1504 strout (XSUBR (obj
)->symbol_name
, -1, -1, printcharfun
, 0);
1508 else if (WINDOWP (obj
))
1510 strout ("#<window ", -1, -1, printcharfun
, 0);
1511 sprintf (buf
, "%d", XFASTINT (XWINDOW (obj
)->sequence_number
));
1512 strout (buf
, -1, -1, printcharfun
, 0);
1513 if (!NILP (XWINDOW (obj
)->buffer
))
1515 strout (" on ", -1, -1, printcharfun
, 0);
1516 print_string (XBUFFER (XWINDOW (obj
)->buffer
)->name
, printcharfun
);
1520 else if (BUFFERP (obj
))
1522 if (NILP (XBUFFER (obj
)->name
))
1523 strout ("#<killed buffer>", -1, -1, printcharfun
, 0);
1524 else if (escapeflag
)
1526 strout ("#<buffer ", -1, -1, printcharfun
, 0);
1527 print_string (XBUFFER (obj
)->name
, printcharfun
);
1531 print_string (XBUFFER (obj
)->name
, printcharfun
);
1533 else if (WINDOW_CONFIGURATIONP (obj
))
1535 strout ("#<window-configuration>", -1, -1, printcharfun
, 0);
1537 else if (FRAMEP (obj
))
1539 strout ((FRAME_LIVE_P (XFRAME (obj
))
1540 ? "#<frame " : "#<dead frame "),
1541 -1, -1, printcharfun
, 0);
1542 print_string (XFRAME (obj
)->name
, printcharfun
);
1543 sprintf (buf
, " 0x%lx\\ ", (unsigned long) (XFRAME (obj
)));
1544 strout (buf
, -1, -1, printcharfun
, 0);
1547 #endif /* not standalone */
1550 int size
= XVECTOR (obj
)->size
;
1551 if (COMPILEDP (obj
))
1554 size
&= PSEUDOVECTOR_SIZE_MASK
;
1556 if (CHAR_TABLE_P (obj
))
1558 /* We print a char-table as if it were a vector,
1559 lumping the parent and default slots in with the
1560 character slots. But we add #^ as a prefix. */
1563 if (SUB_CHAR_TABLE_P (obj
))
1565 size
&= PSEUDOVECTOR_SIZE_MASK
;
1567 if (size
& PSEUDOVECTOR_FLAG
)
1573 register Lisp_Object tem
;
1575 /* Don't print more elements than the specified maximum. */
1576 if (INTEGERP (Vprint_length
)
1577 && XINT (Vprint_length
) < size
)
1578 size
= XINT (Vprint_length
);
1580 for (i
= 0; i
< size
; i
++)
1582 if (i
) PRINTCHAR (' ');
1583 tem
= XVECTOR (obj
)->contents
[i
];
1584 print (tem
, printcharfun
, escapeflag
);
1593 switch (XMISCTYPE (obj
))
1595 case Lisp_Misc_Marker
:
1596 strout ("#<marker ", -1, -1, printcharfun
, 0);
1597 /* Do you think this is necessary? */
1598 if (XMARKER (obj
)->insertion_type
!= 0)
1599 strout ("(before-insertion) ", -1, -1, printcharfun
, 0);
1600 if (!(XMARKER (obj
)->buffer
))
1601 strout ("in no buffer", -1, -1, printcharfun
, 0);
1604 sprintf (buf
, "at %d", marker_position (obj
));
1605 strout (buf
, -1, -1, printcharfun
, 0);
1606 strout (" in ", -1, -1, printcharfun
, 0);
1607 print_string (XMARKER (obj
)->buffer
->name
, printcharfun
);
1612 case Lisp_Misc_Overlay
:
1613 strout ("#<overlay ", -1, -1, printcharfun
, 0);
1614 if (!(XMARKER (OVERLAY_START (obj
))->buffer
))
1615 strout ("in no buffer", -1, -1, printcharfun
, 0);
1618 sprintf (buf
, "from %d to %d in ",
1619 marker_position (OVERLAY_START (obj
)),
1620 marker_position (OVERLAY_END (obj
)));
1621 strout (buf
, -1, -1, printcharfun
, 0);
1622 print_string (XMARKER (OVERLAY_START (obj
))->buffer
->name
,
1628 /* Remaining cases shouldn't happen in normal usage, but let's print
1629 them anyway for the benefit of the debugger. */
1630 case Lisp_Misc_Free
:
1631 strout ("#<misc free cell>", -1, -1, printcharfun
, 0);
1634 case Lisp_Misc_Intfwd
:
1635 sprintf (buf
, "#<intfwd to %d>", *XINTFWD (obj
)->intvar
);
1636 strout (buf
, -1, -1, printcharfun
, 0);
1639 case Lisp_Misc_Boolfwd
:
1640 sprintf (buf
, "#<boolfwd to %s>",
1641 (*XBOOLFWD (obj
)->boolvar
? "t" : "nil"));
1642 strout (buf
, -1, -1, printcharfun
, 0);
1645 case Lisp_Misc_Objfwd
:
1646 strout ("#<objfwd to ", -1, -1, printcharfun
, 0);
1647 print (*XOBJFWD (obj
)->objvar
, printcharfun
, escapeflag
);
1651 case Lisp_Misc_Buffer_Objfwd
:
1652 strout ("#<buffer_objfwd to ", -1, -1, printcharfun
, 0);
1653 print (*(Lisp_Object
*)((char *)current_buffer
1654 + XBUFFER_OBJFWD (obj
)->offset
),
1655 printcharfun
, escapeflag
);
1659 case Lisp_Misc_Kboard_Objfwd
:
1660 strout ("#<kboard_objfwd to ", -1, -1, printcharfun
, 0);
1661 print (*(Lisp_Object
*)((char *) current_kboard
1662 + XKBOARD_OBJFWD (obj
)->offset
),
1663 printcharfun
, escapeflag
);
1667 case Lisp_Misc_Buffer_Local_Value
:
1668 strout ("#<buffer_local_value ", -1, -1, printcharfun
, 0);
1669 goto do_buffer_local
;
1670 case Lisp_Misc_Some_Buffer_Local_Value
:
1671 strout ("#<some_buffer_local_value ", -1, -1, printcharfun
, 0);
1673 strout ("[realvalue] ", -1, -1, printcharfun
, 0);
1674 print (XBUFFER_LOCAL_VALUE (obj
)->realvalue
, printcharfun
, escapeflag
);
1675 if (XBUFFER_LOCAL_VALUE (obj
)->found_for_buffer
)
1676 strout ("[local in buffer] ", -1, -1, printcharfun
, 0);
1678 strout ("[buffer] ", -1, -1, printcharfun
, 0);
1679 print (XBUFFER_LOCAL_VALUE (obj
)->buffer
,
1680 printcharfun
, escapeflag
);
1681 if (XBUFFER_LOCAL_VALUE (obj
)->check_frame
)
1683 if (XBUFFER_LOCAL_VALUE (obj
)->found_for_frame
)
1684 strout ("[local in frame] ", -1, -1, printcharfun
, 0);
1686 strout ("[frame] ", -1, -1, printcharfun
, 0);
1687 print (XBUFFER_LOCAL_VALUE (obj
)->frame
,
1688 printcharfun
, escapeflag
);
1690 strout ("[alist-elt] ", -1, -1, printcharfun
, 0);
1691 print (XCONS (XBUFFER_LOCAL_VALUE (obj
)->cdr
)->car
,
1692 printcharfun
, escapeflag
);
1693 strout ("[default-value] ", -1, -1, printcharfun
, 0);
1694 print (XCONS (XBUFFER_LOCAL_VALUE (obj
)->cdr
)->cdr
,
1695 printcharfun
, escapeflag
);
1703 #endif /* standalone */
1708 /* We're in trouble if this happens!
1709 Probably should just abort () */
1710 strout ("#<EMACS BUG: INVALID DATATYPE ", -1, -1, printcharfun
, 0);
1712 sprintf (buf
, "(MISC 0x%04x)", (int) XMISCTYPE (obj
));
1713 else if (VECTORLIKEP (obj
))
1714 sprintf (buf
, "(PVEC 0x%08x)", (int) XVECTOR (obj
)->size
);
1716 sprintf (buf
, "(0x%02x)", (int) XTYPE (obj
));
1717 strout (buf
, -1, -1, printcharfun
, 0);
1718 strout (" Save your buffers immediately and please report this bug>",
1719 -1, -1, printcharfun
, 0);
1726 #ifdef USE_TEXT_PROPERTIES
1728 /* Print a description of INTERVAL using PRINTCHARFUN.
1729 This is part of printing a string that has text properties. */
1732 print_interval (interval
, printcharfun
)
1734 Lisp_Object printcharfun
;
1737 print (make_number (interval
->position
), printcharfun
, 1);
1739 print (make_number (interval
->position
+ LENGTH (interval
)),
1742 print (interval
->plist
, printcharfun
, 1);
1745 #endif /* USE_TEXT_PROPERTIES */
1750 DEFVAR_LISP ("standard-output", &Vstandard_output
,
1751 "Output stream `print' uses by default for outputting a character.\n\
1752 This may be any function of one argument.\n\
1753 It may also be a buffer (output is inserted before point)\n\
1754 or a marker (output is inserted and the marker is advanced)\n\
1755 or the symbol t (output appears in the echo area).");
1756 Vstandard_output
= Qt
;
1757 Qstandard_output
= intern ("standard-output");
1758 staticpro (&Qstandard_output
);
1760 #ifdef LISP_FLOAT_TYPE
1761 DEFVAR_LISP ("float-output-format", &Vfloat_output_format
,
1762 "The format descriptor string used to print floats.\n\
1763 This is a %-spec like those accepted by `printf' in C,\n\
1764 but with some restrictions. It must start with the two characters `%.'.\n\
1765 After that comes an integer precision specification,\n\
1766 and then a letter which controls the format.\n\
1767 The letters allowed are `e', `f' and `g'.\n\
1768 Use `e' for exponential notation \"DIG.DIGITSeEXPT\"\n\
1769 Use `f' for decimal point notation \"DIGITS.DIGITS\".\n\
1770 Use `g' to choose the shorter of those two formats for the number at hand.\n\
1771 The precision in any of these cases is the number of digits following\n\
1772 the decimal point. With `f', a precision of 0 means to omit the\n\
1773 decimal point. 0 is not allowed with `e' or `g'.\n\n\
1774 A value of nil means to use the shortest notation\n\
1775 that represents the number without losing information.");
1776 Vfloat_output_format
= Qnil
;
1777 Qfloat_output_format
= intern ("float-output-format");
1778 staticpro (&Qfloat_output_format
);
1779 #endif /* LISP_FLOAT_TYPE */
1781 DEFVAR_LISP ("print-length", &Vprint_length
,
1782 "Maximum length of list to print before abbreviating.\n\
1783 A value of nil means no limit.");
1784 Vprint_length
= Qnil
;
1786 DEFVAR_LISP ("print-level", &Vprint_level
,
1787 "Maximum depth of list nesting to print before abbreviating.\n\
1788 A value of nil means no limit.");
1789 Vprint_level
= Qnil
;
1791 DEFVAR_BOOL ("print-escape-newlines", &print_escape_newlines
,
1792 "Non-nil means print newlines in strings as backslash-n.\n\
1793 Also print formfeeds as backslash-f.");
1794 print_escape_newlines
= 0;
1796 DEFVAR_BOOL ("print-quoted", &print_quoted
,
1797 "Non-nil means print quoted forms with reader syntax.\n\
1798 I.e., (quote foo) prints as 'foo, (function foo) as #'foo, and, backquoted\n\
1799 forms print in the new syntax.");
1802 DEFVAR_LISP ("print-gensym", &Vprint_gensym
,
1803 "Non-nil means print uninterned symbols so they will read as uninterned.\n\
1804 I.e., the value of (make-symbol \"foobar\") prints as #:foobar.\n\
1805 When the uninterned symbol appears within a larger data structure,\n\
1806 in addition use the #...# and #...= constructs as needed,\n\
1807 so that multiple references to the same symbol are shared once again\n\
1808 when the text is read back.\n\
1810 If the value of `print-gensym' is a cons cell, then in addition refrain from\n\
1811 clearing `print-gensym-alist' on entry to and exit from printing functions,\n\
1812 so that the use of #...# and #...= can carry over for several separately\n\
1814 Vprint_gensym
= Qnil
;
1816 DEFVAR_LISP ("print-gensym-alist", &Vprint_gensym_alist
,
1817 "Association list of elements (GENSYM . N) to guide use of #N# and #N=.\n\
1818 In each element, GENSYM is an uninterned symbol that has been associated\n\
1819 with #N= for the specified value of N.");
1820 Vprint_gensym_alist
= Qnil
;
1822 /* prin1_to_string_buffer initialized in init_buffer_once in buffer.c */
1823 staticpro (&Vprin1_to_string_buffer
);
1826 defsubr (&Sprin1_to_string
);
1827 defsubr (&Serror_message_string
);
1831 defsubr (&Swrite_char
);
1832 defsubr (&Sexternal_debugging_output
);
1834 Qexternal_debugging_output
= intern ("external-debugging-output");
1835 staticpro (&Qexternal_debugging_output
);
1837 Qprint_escape_newlines
= intern ("print-escape-newlines");
1838 staticpro (&Qprint_escape_newlines
);
1841 defsubr (&Swith_output_to_temp_buffer
);
1842 #endif /* not standalone */