[bpt/emacs.git] / src / intervals.h

/* Definitions and global variables for intervals.
   Copyright (C) 1993, 1994 Free Software Foundation, Inc.

This file is part of GNU Emacs.

GNU Emacs is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

#ifdef USE_TEXT_PROPERTIES
#ifndef NORMAL_FACE
#include "dispextern.h"
#endif

#define NULL_INTERVAL 0
#define INTERVAL_DEFAULT NULL_INTERVAL

/* These are macros for dealing with the interval tree. */

/* Size of the structure used to represent an interval */
#define INTERVAL_SIZE (sizeof (struct interval))

/* Size of a pointer to an interval structure */
#define INTERVAL_PTR_SIZE (sizeof (struct interval *))

/* True if an interval pointer is null, or is a Lisp_Buffer or
   Lisp_String pointer (meaning it points to the owner of this
   interval tree). */
#ifdef NO_UNION_TYPE
#define NULL_INTERVAL_P(i) ((i) == NULL_INTERVAL           \
			    || BUFFERP ((Lisp_Object)(i)) \
			    || STRINGP ((Lisp_Object)(i)))
#else
#define NULL_INTERVAL_P(i) ((i) == NULL_INTERVAL           \
			    || BUFFERP ((Lisp_Object){(EMACS_INT)(i)}) \
			    || STRINGP ((Lisp_Object){(EMACS_INT)(i)}))
#endif

/* True if this interval has no right child. */
#define NULL_RIGHT_CHILD(i) ((i)->right == NULL_INTERVAL)

/* True if this interval has no left child. */
#define NULL_LEFT_CHILD(i) ((i)->left == NULL_INTERVAL)

/* True if this interval has no parent. */
#define NULL_PARENT(i) (NULL_INTERVAL_P ((i)->parent))

/* True if this interval is the left child of some other interval. */
#define AM_LEFT_CHILD(i) (! NULL_INTERVAL_P ((i)->parent) \
			  && (i)->parent->left == (i))

/* True if this interval is the right child of some other interval. */
#define AM_RIGHT_CHILD(i) (! NULL_INTERVAL_P ((i)->parent) \
			   && (i)->parent->right == (i))

/* True if this interval has no children. */
#define LEAF_INTERVAL_P(i) ((i)->left == NULL_INTERVAL \
			    && (i)->right == NULL_INTERVAL)

/* True if this interval has no parent and is therefore the root. */
#define ROOT_INTERVAL_P(i) (NULL_PARENT (i))

/* True if this interval is the only interval in the interval tree. */
#define ONLY_INTERVAL_P(i) (ROOT_INTERVAL_P ((i)) && LEAF_INTERVAL_P ((i)))

/* True if this interval has both left and right children. */
#define BOTH_KIDS_P(i) ((i)->left != NULL_INTERVAL     \
			&& (i)->right != NULL_INTERVAL)

/* The total size of all text represented by this interval and all its
   children in the tree.   This is zero if the interval is null. */
#define TOTAL_LENGTH(i) ((i) == NULL_INTERVAL ? 0 : (i)->total_length)

/* The size of text represented by this interval alone. */
#define LENGTH(i) ((i) == NULL_INTERVAL ? 0 : (TOTAL_LENGTH ((i))          \
					       - TOTAL_LENGTH ((i)->right) \
					       - TOTAL_LENGTH ((i)->left)))

/* The position of the character just past the end of I.  Note that
   the position cache i->position must be valid for this to work. */
#define INTERVAL_LAST_POS(i) ((i)->position + LENGTH ((i)))

/* The total size of the left subtree of this interval. */
#define LEFT_TOTAL_LENGTH(i) ((i)->left ? (i)->left->total_length : 0)

/* The total size of the right subtree of this interval. */
#define RIGHT_TOTAL_LENGTH(i) ((i)->right ? (i)->right->total_length : 0)


/* These macros are for dealing with the interval properties. */

/* True if this is a default interval, which is the same as being null
   or having no properties. */
#define DEFAULT_INTERVAL_P(i) (NULL_INTERVAL_P (i) || EQ ((i)->plist, Qnil))

/* Reset this interval to its vanilla, or no-property state. */
#define RESET_INTERVAL(i) \
{ \
    (i)->total_length = (i)->position = 0;    \
    (i)->left = (i)->right = NULL_INTERVAL;   \
    (i)->parent = NULL_INTERVAL;              \
    (i)->write_protect = 0;                   \
    (i)->visible = 0;                         \
    (i)->front_sticky = (i)->rear_sticky = 0; \
    (i)->plist = Qnil;         	              \
}

/* Copy the cached property values of interval FROM to interval TO. */
#define COPY_INTERVAL_CACHE(from,to) \
{ \
  (to)->write_protect = (from)->write_protect; \
  (to)->visible = (from)->visible;             \
  (to)->front_sticky = (from)->front_sticky;   \
  (to)->rear_sticky = (from)->rear_sticky;     \
}

/* Copy only the set bits of FROM's cache. */
#define MERGE_INTERVAL_CACHE(from,to) \
{ \
  if ((from)->write_protect) (to)->write_protect = 1; \
  if ((from)->visible) (to)->visible = 1;             \
  if ((from)->front_sticky) (to)->front_sticky = 1;   \
  if ((from)->rear_sticky) (to)->rear_sticky = 1;     \
}

/* Macro determining whether the properties of an interval being
   inserted should be merged with the properties of the text where
   they are being inserted. */
#define MERGE_INSERTIONS(i) 1

/* Macro determining if an invisible interval should be displayed
   as a special glyph, or not at all. */
#define DISPLAY_INVISIBLE_GLYPH(i) 0

/* Is this interval visible?  Replace later with cache access */
#define INTERVAL_VISIBLE_P(i) \
  (! NULL_INTERVAL_P (i) && NILP (textget ((i)->plist, Qinvisible)))

/* Is this interval writable?  Replace later with cache access */
#define INTERVAL_WRITABLE_P(i)					\
  (! NULL_INTERVAL_P (i)					\
   && (NILP (textget ((i)->plist, Qread_only))			\
       || ((CONSP (Vinhibit_read_only)				\
	    ? !NILP (Fmemq (textget ((i)->plist, Qread_only),	\
			    Vinhibit_read_only))		\
	    : !NILP (Vinhibit_read_only)))))			\

/* Macros to tell whether insertions before or after this interval
   should stick to it. */
/* Replace later with cache access */
/*#define FRONT_STICKY_P(i) ((i)->front_sticky != 0)
  #define END_STICKY_P(i) ((i)->rear_sticky != 0)*/
#define FRONT_STICKY_P(i) \
  (! NULL_INTERVAL_P (i) && ! NILP (textget ((i)->plist, Qfront_sticky)))
#define END_NONSTICKY_P(i) \
  (! NULL_INTERVAL_P (i) && ! NILP (textget ((i)->plist, Qrear_nonsticky)))
#define FRONT_NONSTICKY_P(i) \
  (! NULL_INTERVAL_P (i) && ! EQ (Qt, textget ((i)->plist, Qfront_sticky)))


/* If PROP is the `invisible' property of a character,
   this is 1 if the character should be treated as invisible.  */

#define TEXT_PROP_MEANS_INVISIBLE(prop)				\
  (EQ (current_buffer->invisibility_spec, Qt)			\
   ? ! NILP (prop)						\
   : invisible_p (prop, current_buffer->invisibility_spec))

/* If PROP is the `invisible' property of a character,
   this is 1 if the character should be treated as invisible
   and should have an ellipsis.  */

#define TEXT_PROP_MEANS_INVISIBLE_WITH_ELLIPSIS(prop)		\
  (EQ (current_buffer->invisibility_spec, Qt)			\
   ? 0								\
   : invisible_ellipsis_p (prop, current_buffer->invisibility_spec))

/* Declared in alloc.c */

extern INTERVAL make_interval ();

/* Declared in intervals.c */

extern INTERVAL create_root_interval ();
extern void copy_properties ();
extern int intervals_equal ();
extern void traverse_intervals ();
extern INTERVAL split_interval_right (), split_interval_left ();
extern INLINE INTERVAL find_interval ();
extern INTERVAL next_interval (), previous_interval ();
extern INTERVAL merge_interval_left (), merge_interval_right ();
extern void delete_interval ();
extern INLINE void offset_intervals ();
extern void graft_intervals_into_buffer ();
extern void set_point ();
extern INLINE void temp_set_point ();
extern void verify_interval_modification ();
extern INTERVAL balance_intervals ();
extern INLINE void copy_intervals_to_string ();
extern INTERVAL copy_intervals ();
extern Lisp_Object textget ();
extern Lisp_Object get_local_map ();
extern INTERVAL update_interval ();

/* Declared in textprop.c */

/* Types of hooks. */
extern Lisp_Object Qmouse_left;
extern Lisp_Object Qmouse_entered;
extern Lisp_Object Qpoint_left;
extern Lisp_Object Qpoint_entered;
extern Lisp_Object Qmodification_hooks;
extern Lisp_Object Qcategory;
extern Lisp_Object Qlocal_map;

/* Visual properties text (including strings) may have. */
extern Lisp_Object Qforeground, Qbackground, Qfont, Qunderline, Qstipple;
extern Lisp_Object Qinvisible, Qintangible, Qread_only;

extern Lisp_Object Vinhibit_point_motion_hooks;
extern Lisp_Object Vdefault_text_properties;

/* Sticky properties */
extern Lisp_Object Qfront_sticky, Qrear_nonsticky;

extern Lisp_Object Fget_char_property (), Fget_text_property ();
extern Lisp_Object Ftext_properties_at ();
extern Lisp_Object Fnext_property_change (), Fprevious_property_change ();
extern Lisp_Object Fadd_text_properties (), Fset_text_properties ();
extern Lisp_Object Fremove_text_properties (), Ferase_text_properties ();
extern Lisp_Object Ftext_property_any (), Ftext_property_not_all ();
extern Lisp_Object copy_text_properties ();

extern void syms_of_textprop ();

#else  /* don't support text properties */

#define NULL_INTERVAL_P(i) 1
#define INTERVAL_SIZE 0
#define INTERVAL_PTR_SIZE 0

#define copy_intervals_to_string(string,buffer,position,length)
#define verify_interval_modification(buffer,start,end)
#define insert_interval_copy(source,position,end,sink,at)
#define graft_intervals_into_buffer(tree,position,bufferptr)
#define offset_intervals(buffer,position,length)
#define copy_intervals(tree,start,length)

#define syms_of_textprop()

#endif /* don't support text properties */
Commit	Line	Data
90ba40fc	1	/* Definitions and global variables for intervals.
3a22ee35	2	Copyright (C) 1993, 1994 Free Software Foundation, Inc.
90ba40fc JA	3
	4	This file is part of GNU Emacs.
	5
	6	GNU Emacs is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
7c938215	8	the Free Software Foundation; either version 2, or (at your option)
90ba40fc JA	9	any later version.
	10
	11	GNU Emacs is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with GNU Emacs; see the file COPYING. If not, write to
3b7ad313 EN	18	the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
3b7ad313 EN	19	Boston, MA 02111-1307, USA. */
90ba40fc	20
e115a65b	21	#ifdef USE_TEXT_PROPERTIES
a994e161	22	#ifndef NORMAL_FACE
90ba40fc	23	#include "dispextern.h"
a994e161	24	#endif
90ba40fc JA	25
	26	#define NULL_INTERVAL 0
	27	#define INTERVAL_DEFAULT NULL_INTERVAL
	28
	29	/* These are macros for dealing with the interval tree. */
	30
	31	/* Size of the structure used to represent an interval */
	32	#define INTERVAL_SIZE (sizeof (struct interval))
	33
	34	/* Size of a pointer to an interval structure */
	35	#define INTERVAL_PTR_SIZE (sizeof (struct interval *))
	36
	37	/* True if an interval pointer is null, or is a Lisp_Buffer or
	38	Lisp_String pointer (meaning it points to the owner of this
7ac78c9a	39	interval tree). */
2e34157c	40	#ifdef NO_UNION_TYPE
693f8fb0 KH	41	#define NULL_INTERVAL_P(i) ((i) == NULL_INTERVAL \
	42	\|\| BUFFERP ((Lisp_Object)(i)) \
	43	\|\| STRINGP ((Lisp_Object)(i)))
2e34157c RS	44	#else
	45	#define NULL_INTERVAL_P(i) ((i) == NULL_INTERVAL \
	46	\|\| BUFFERP ((Lisp_Object){(EMACS_INT)(i)}) \
	47	\|\| STRINGP ((Lisp_Object){(EMACS_INT)(i)}))
	48	#endif
90ba40fc JA	49
90ba40fc JA	50	/* True if this interval has no right child. */
7ac78c9a	51	#define NULL_RIGHT_CHILD(i) ((i)->right == NULL_INTERVAL)
90ba40fc JA	52
90ba40fc JA	53	/* True if this interval has no left child. */
7ac78c9a	54	#define NULL_LEFT_CHILD(i) ((i)->left == NULL_INTERVAL)
90ba40fc JA	55
90ba40fc JA	56	/* True if this interval has no parent. */
7ac78c9a	57	#define NULL_PARENT(i) (NULL_INTERVAL_P ((i)->parent))
90ba40fc JA	58
	59	/* True if this interval is the left child of some other interval. */
	60	#define AM_LEFT_CHILD(i) (! NULL_INTERVAL_P ((i)->parent) \
	61	&& (i)->parent->left == (i))
	62
7ac78c9a	63	/* True if this interval is the right child of some other interval. */
90ba40fc JA	64	#define AM_RIGHT_CHILD(i) (! NULL_INTERVAL_P ((i)->parent) \
	65	&& (i)->parent->right == (i))
	66
	67	/* True if this interval has no children. */
	68	#define LEAF_INTERVAL_P(i) ((i)->left == NULL_INTERVAL \
	69	&& (i)->right == NULL_INTERVAL)
	70
	71	/* True if this interval has no parent and is therefore the root. */
	72	#define ROOT_INTERVAL_P(i) (NULL_PARENT (i))
	73
	74	/* True if this interval is the only interval in the interval tree. */
7ac78c9a	75	#define ONLY_INTERVAL_P(i) (ROOT_INTERVAL_P ((i)) && LEAF_INTERVAL_P ((i)))
90ba40fc JA	76
	77	/* True if this interval has both left and right children. */
	78	#define BOTH_KIDS_P(i) ((i)->left != NULL_INTERVAL \
	79	&& (i)->right != NULL_INTERVAL)
	80
	81	/* The total size of all text represented by this interval and all its
	82	children in the tree. This is zero if the interval is null. */
	83	#define TOTAL_LENGTH(i) ((i) == NULL_INTERVAL ? 0 : (i)->total_length)
	84
	85	/* The size of text represented by this interval alone. */
	86	#define LENGTH(i) ((i) == NULL_INTERVAL ? 0 : (TOTAL_LENGTH ((i)) \
	87	- TOTAL_LENGTH ((i)->right) \
	88	- TOTAL_LENGTH ((i)->left)))
	89
3fc86d4b	90	/* The position of the character just past the end of I. Note that
90ba40fc	91	the position cache i->position must be valid for this to work. */
3fc86d4b	92	#define INTERVAL_LAST_POS(i) ((i)->position + LENGTH ((i)))
90ba40fc JA	93
	94	/* The total size of the left subtree of this interval. */
	95	#define LEFT_TOTAL_LENGTH(i) ((i)->left ? (i)->left->total_length : 0)
	96
	97	/* The total size of the right subtree of this interval. */
	98	#define RIGHT_TOTAL_LENGTH(i) ((i)->right ? (i)->right->total_length : 0)
	99
	100
	101	/* These macros are for dealing with the interval properties. */
	102
	103	/* True if this is a default interval, which is the same as being null
	104	or having no properties. */
	105	#define DEFAULT_INTERVAL_P(i) (NULL_INTERVAL_P (i) \|\| EQ ((i)->plist, Qnil))
	106
	107	/* Reset this interval to its vanilla, or no-property state. */
7ac78c9a RS	108	#define RESET_INTERVAL(i) \
	109	{ \
	110	(i)->total_length = (i)->position = 0; \
	111	(i)->left = (i)->right = NULL_INTERVAL; \
	112	(i)->parent = NULL_INTERVAL; \
	113	(i)->write_protect = 0; \
	114	(i)->visible = 0; \
	115	(i)->front_sticky = (i)->rear_sticky = 0; \
	116	(i)->plist = Qnil; \
	117	}
90ba40fc JA	118
	119	/* Copy the cached property values of interval FROM to interval TO. */
	120	#define COPY_INTERVAL_CACHE(from,to) \
	121	{ \
	122	(to)->write_protect = (from)->write_protect; \
	123	(to)->visible = (from)->visible; \
	124	(to)->front_sticky = (from)->front_sticky; \
	125	(to)->rear_sticky = (from)->rear_sticky; \
	126	}
	127
	128	/* Copy only the set bits of FROM's cache. */
	129	#define MERGE_INTERVAL_CACHE(from,to) \
	130	{ \
	131	if ((from)->write_protect) (to)->write_protect = 1; \
	132	if ((from)->visible) (to)->visible = 1; \
	133	if ((from)->front_sticky) (to)->front_sticky = 1; \
	134	if ((from)->rear_sticky) (to)->rear_sticky = 1; \
	135	}
	136
	137	/* Macro determining whether the properties of an interval being
	138	inserted should be merged with the properties of the text where
	139	they are being inserted. */
58943db0	140	#define MERGE_INSERTIONS(i) 1
90ba40fc JA	141
	142	/* Macro determining if an invisible interval should be displayed
	143	as a special glyph, or not at all. */
	144	#define DISPLAY_INVISIBLE_GLYPH(i) 0
	145
	146	/* Is this interval visible? Replace later with cache access */
	147	#define INTERVAL_VISIBLE_P(i) \
9207deb2	148	(! NULL_INTERVAL_P (i) && NILP (textget ((i)->plist, Qinvisible)))
90ba40fc JA	149
90ba40fc JA	150	/* Is this interval writable? Replace later with cache access */
5f8a398a RS	151	#define INTERVAL_WRITABLE_P(i) \
	152	(! NULL_INTERVAL_P (i) \
	153	&& (NILP (textget ((i)->plist, Qread_only)) \
	154	\|\| ((CONSP (Vinhibit_read_only) \
	155	? !NILP (Fmemq (textget ((i)->plist, Qread_only), \
	156	Vinhibit_read_only)) \
	157	: !NILP (Vinhibit_read_only))))) \
90ba40fc JA	158
	159	/* Macros to tell whether insertions before or after this interval
	160	should stick to it. */
58943db0 RS	161	/* Replace later with cache access */
	162	/*#define FRONT_STICKY_P(i) ((i)->front_sticky != 0)
	163	#define END_STICKY_P(i) ((i)->rear_sticky != 0)*/
	164	#define FRONT_STICKY_P(i) \
	165	(! NULL_INTERVAL_P (i) && ! NILP (textget ((i)->plist, Qfront_sticky)))
	166	#define END_NONSTICKY_P(i) \
	167	(! NULL_INTERVAL_P (i) && ! NILP (textget ((i)->plist, Qrear_nonsticky)))
97f7b3b2 RS	168	#define FRONT_NONSTICKY_P(i) \
97f7b3b2 RS	169	(! NULL_INTERVAL_P (i) && ! EQ (Qt, textget ((i)->plist, Qfront_sticky)))
90ba40fc JA	170
90ba40fc JA	171
47b4c04d RS	172	/* If PROP is the `invisible' property of a character,
	173	this is 1 if the character should be treated as invisible. */
	174
	175	#define TEXT_PROP_MEANS_INVISIBLE(prop) \
	176	(EQ (current_buffer->invisibility_spec, Qt) \
	177	? ! NILP (prop) \
	178	: invisible_p (prop, current_buffer->invisibility_spec))
	179
	180	/* If PROP is the `invisible' property of a character,
	181	this is 1 if the character should be treated as invisible
	182	and should have an ellipsis. */
	183
	184	#define TEXT_PROP_MEANS_INVISIBLE_WITH_ELLIPSIS(prop) \
	185	(EQ (current_buffer->invisibility_spec, Qt) \
	186	? 0 \
	187	: invisible_ellipsis_p (prop, current_buffer->invisibility_spec))
	188
90ba40fc JA	189	/* Declared in alloc.c */
	190
	191	extern INTERVAL make_interval ();
	192
	193	/* Declared in intervals.c */
	194
90ba40fc JA	195	extern INTERVAL create_root_interval ();
	196	extern void copy_properties ();
	197	extern int intervals_equal ();
	198	extern void traverse_intervals ();
	199	extern INTERVAL split_interval_right (), split_interval_left ();
c1f6cc77 JA	200	extern INLINE INTERVAL find_interval ();
c1f6cc77 JA	201	extern INTERVAL next_interval (), previous_interval ();
90ba40fc JA	202	extern INTERVAL merge_interval_left (), merge_interval_right ();
	203	extern void delete_interval ();
	204	extern INLINE void offset_intervals ();
90ba40fc JA	205	extern void graft_intervals_into_buffer ();
90ba40fc JA	206	extern void set_point ();
c1f6cc77	207	extern INLINE void temp_set_point ();
90ba40fc JA	208	extern void verify_interval_modification ();
90ba40fc JA	209	extern INTERVAL balance_intervals ();
c1f6cc77 JA	210	extern INLINE void copy_intervals_to_string ();
c1f6cc77 JA	211	extern INTERVAL copy_intervals ();
1a7c673b RS	212	extern Lisp_Object textget ();
1a7c673b RS	213	extern Lisp_Object get_local_map ();
add1fffc	214	extern INTERVAL update_interval ();
90ba40fc JA	215
	216	/* Declared in textprop.c */
	217
	218	/* Types of hooks. */
	219	extern Lisp_Object Qmouse_left;
	220	extern Lisp_Object Qmouse_entered;
	221	extern Lisp_Object Qpoint_left;
	222	extern Lisp_Object Qpoint_entered;
1a7c673b RS	223	extern Lisp_Object Qmodification_hooks;
	224	extern Lisp_Object Qcategory;
	225	extern Lisp_Object Qlocal_map;
90ba40fc JA	226
	227	/* Visual properties text (including strings) may have. */
	228	extern Lisp_Object Qforeground, Qbackground, Qfont, Qunderline, Qstipple;
86d62d76	229	extern Lisp_Object Qinvisible, Qintangible, Qread_only;
90ba40fc	230
b81de1f7	231	extern Lisp_Object Vinhibit_point_motion_hooks;
b9439338	232	extern Lisp_Object Vdefault_text_properties;
b81de1f7	233
58943db0 RS	234	/* Sticky properties */
	235	extern Lisp_Object Qfront_sticky, Qrear_nonsticky;
	236
023c80d0	237	extern Lisp_Object Fget_char_property (), Fget_text_property ();
90ba40fc JA	238	extern Lisp_Object Ftext_properties_at ();
	239	extern Lisp_Object Fnext_property_change (), Fprevious_property_change ();
	240	extern Lisp_Object Fadd_text_properties (), Fset_text_properties ();
	241	extern Lisp_Object Fremove_text_properties (), Ferase_text_properties ();
edc28db1	242	extern Lisp_Object Ftext_property_any (), Ftext_property_not_all ();
15e92aba	243	extern Lisp_Object copy_text_properties ();
90ba40fc JA	244
	245	extern void syms_of_textprop ();
	246
e115a65b	247	#else /* don't support text properties */
90ba40fc JA	248
	249	#define NULL_INTERVAL_P(i) 1
	250	#define INTERVAL_SIZE 0
	251	#define INTERVAL_PTR_SIZE 0
	252
	253	#define copy_intervals_to_string(string,buffer,position,length)
	254	#define verify_interval_modification(buffer,start,end)
	255	#define insert_interval_copy(source,position,end,sink,at)
	256	#define graft_intervals_into_buffer(tree,position,bufferptr)
	257	#define offset_intervals(buffer,position,length)
c1f6cc77	258	#define copy_intervals(tree,start,length)
90ba40fc	259
e115a65b JA	260	#define syms_of_textprop()
	261
	262	#endif /* don't support text properties */