X-Git-Url: http://git.hcoop.net/bpt/emacs.git/blobdiff_plain/b079118d839503d4238ccb15ba54df43c5a1d4e4..d95ebe75a0471e700cfddecb68329f9970c128c4:/src/textprop.c diff --git a/src/textprop.c b/src/textprop.c index 401e26f1a3..e2f9c53173 100644 --- a/src/textprop.c +++ b/src/textprop.c @@ -1,6 +1,6 @@ /* Interface code for dealing with text properties. - Copyright (C) 1993, 1994, 1995, 1997, 1999, 2000, 2001, 2002 - Free Software Foundation, Inc. + Copyright (C) 1993, 1994, 1995, 1997, 1999, 2000, 2001, 2002, 2003, + 2004, 2005, 2006 Free Software Foundation, Inc. This file is part of GNU Emacs. @@ -16,8 +16,8 @@ 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. */ +the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, +Boston, MA 02110-1301, USA. */ #include #include "lisp.h" @@ -70,6 +70,7 @@ Lisp_Object Qfront_sticky, Qrear_nonsticky; Lisp_Object Vinhibit_point_motion_hooks; Lisp_Object Vdefault_text_properties; +Lisp_Object Vchar_property_alias_alist; Lisp_Object Vtext_property_default_nonsticky; /* verify_interval_modification saves insertion hooks here @@ -82,9 +83,10 @@ Lisp_Object interval_insert_in_front_hooks; to capture that error in GDB by putting a breakpoint on it. */ static void -text_read_only () +text_read_only (propval) + Lisp_Object propval; { - Fsignal (Qtext_read_only, Qnil); + Fsignal (Qtext_read_only, STRINGP (propval) ? Fcons (propval, Qnil) : Qnil); } @@ -157,17 +159,17 @@ validate_interval_range (object, begin, end, force) } else { - register struct Lisp_String *s = XSTRING (object); + int len = SCHARS (object); if (! (0 <= XINT (*begin) && XINT (*begin) <= XINT (*end) - && XINT (*end) <= s->size)) + && XINT (*end) <= len)) args_out_of_range (*begin, *end); XSETFASTINT (*begin, XFASTINT (*begin)); if (begin != end) XSETFASTINT (*end, XFASTINT (*end)); - i = s->intervals; + i = STRING_INTERVALS (object); - if (s->size == 0) + if (len == 0) return NULL_INTERVAL; searchpos = XINT (*begin); @@ -175,7 +177,7 @@ validate_interval_range (object, begin, end, force) if (NULL_INTERVAL_P (i)) return (force ? create_root_interval (object) : i); - + return find_interval (i, searchpos); } @@ -524,7 +526,7 @@ erase_properties (i) } #endif -/* Returns the interval of POSITION in OBJECT. +/* Returns the interval of POSITION in OBJECT. POSITION is BEG-based. */ INTERVAL @@ -552,26 +554,25 @@ interval_of (position, object) } else { - register struct Lisp_String *s = XSTRING (object); - beg = 0; - end = s->size; - i = s->intervals; + end = SCHARS (object); + i = STRING_INTERVALS (object); } if (!(beg <= position && position <= end)) args_out_of_range (make_number (position), make_number (position)); if (beg == end || NULL_INTERVAL_P (i)) return NULL_INTERVAL; - + return find_interval (i, position); } DEFUN ("text-properties-at", Ftext_properties_at, Stext_properties_at, 1, 2, 0, doc: /* Return the list of properties of the character at POSITION in OBJECT. -OBJECT is the string or buffer to look for the properties in; -nil means the current buffer. +If the optional second argument OBJECT is a buffer (or nil, which means +the current buffer), POSITION is a buffer position (integer or marker). +If OBJECT is a string, POSITION is a 0-based index into it. If POSITION is at the end of OBJECT, the value is nil. */) (position, object) Lisp_Object position, object; @@ -605,7 +606,7 @@ If POSITION is at the end of OBJECT, the value is nil. */) return textget (Ftext_properties_at (position, object), prop); } -/* Return the value of POSITION's property PROP, in OBJECT. +/* Return the value of char's property PROP, in OBJECT at POSITION. OBJECT is optional and defaults to the current buffer. If OVERLAY is non-0, then in the case that the returned property is from an overlay, the overlay found is returned in *OVERLAY, otherwise nil is @@ -636,31 +637,13 @@ get_char_property_and_overlay (position, prop, object, overlay) } if (BUFFERP (object)) { - int posn = XINT (position); int noverlays; - Lisp_Object *overlay_vec, tem; - int next_overlay; - int len; + Lisp_Object *overlay_vec; struct buffer *obuf = current_buffer; set_buffer_temp (XBUFFER (object)); - /* First try with room for 40 overlays. */ - len = 40; - overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); - - noverlays = overlays_at (posn, 0, &overlay_vec, &len, - &next_overlay, NULL, 0); - - /* If there are more than 40, - make enough space for all, and try again. */ - if (noverlays > len) - { - len = noverlays; - overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); - noverlays = overlays_at (posn, 0, &overlay_vec, &len, - &next_overlay, NULL, 0); - } + GET_OVERLAYS_AT (XINT (position), overlay_vec, noverlays, NULL, 0); noverlays = sort_overlays (overlay_vec, noverlays, w); set_buffer_temp (obuf); @@ -668,7 +651,7 @@ get_char_property_and_overlay (position, prop, object, overlay) /* Now check the overlays in order of decreasing priority. */ while (--noverlays >= 0) { - tem = Foverlay_get (overlay_vec[noverlays], prop); + Lisp_Object tem = Foverlay_get (overlay_vec[noverlays], prop); if (!NILP (tem)) { if (overlay) @@ -703,16 +686,40 @@ overlays are considered only if they are associated with OBJECT. */) { return get_char_property_and_overlay (position, prop, object, 0); } + +DEFUN ("get-char-property-and-overlay", Fget_char_property_and_overlay, + Sget_char_property_and_overlay, 2, 3, 0, + doc: /* Like `get-char-property', but with extra overlay information. +Return a cons whose car is the return value of `get-char-property' +with the same arguments, that is, the value of POSITION's property +PROP in OBJECT, and whose cdr is the overlay in which the property was +found, or nil, if it was found as a text property or not found at all. +OBJECT is optional and defaults to the current buffer. OBJECT may be +a string, a buffer or a window. For strings, the cdr of the return +value is always nil, since strings do not have overlays. If OBJECT is +a window, then that window's buffer is used, but window-specific +overlays are considered only if they are associated with OBJECT. If +POSITION is at the end of OBJECT, both car and cdr are nil. */) + (position, prop, object) + Lisp_Object position, object; + register Lisp_Object prop; +{ + Lisp_Object overlay; + Lisp_Object val + = get_char_property_and_overlay (position, prop, object, &overlay); + return Fcons(val, overlay); +} + DEFUN ("next-char-property-change", Fnext_char_property_change, Snext_char_property_change, 1, 2, 0, doc: /* Return the position of next text property or overlay change. -This scans characters forward from POSITION till it finds a change in -some text property, or the beginning or end of an overlay, and returns -the position of that. +This scans characters forward in the current buffer from POSITION till +it finds a change in some text property, or the beginning or end of an +overlay, and returns the position of that. If none is found, the function returns (point-max). -If the optional third argument LIMIT is non-nil, don't search +If the optional second argument LIMIT is non-nil, don't search past position LIMIT; return LIMIT if nothing is found before LIMIT. */) (position, limit) Lisp_Object position, limit; @@ -722,7 +729,7 @@ past position LIMIT; return LIMIT if nothing is found before LIMIT. */) temp = Fnext_overlay_change (position); if (! NILP (limit)) { - CHECK_NUMBER (limit); + CHECK_NUMBER_COERCE_MARKER (limit); if (XINT (limit) < XINT (temp)) temp = limit; } @@ -732,12 +739,12 @@ past position LIMIT; return LIMIT if nothing is found before LIMIT. */) DEFUN ("previous-char-property-change", Fprevious_char_property_change, Sprevious_char_property_change, 1, 2, 0, doc: /* Return the position of previous text property or overlay change. -Scans characters backward from POSITION till it finds a change in some -text property, or the beginning or end of an overlay, and returns the -position of that. +Scans characters backward in the current buffer from POSITION till it +finds a change in some text property, or the beginning or end of an +overlay, and returns the position of that. If none is found, the function returns (point-max). -If the optional third argument LIMIT is non-nil, don't search +If the optional second argument LIMIT is non-nil, don't search past position LIMIT; return LIMIT if nothing is found before LIMIT. */) (position, limit) Lisp_Object position, limit; @@ -747,7 +754,7 @@ past position LIMIT; return LIMIT if nothing is found before LIMIT. */) temp = Fprevious_overlay_change (position); if (! NILP (limit)) { - CHECK_NUMBER (limit); + CHECK_NUMBER_COERCE_MARKER (limit); if (XINT (limit) > XINT (temp)) temp = limit; } @@ -760,7 +767,10 @@ DEFUN ("next-single-char-property-change", Fnext_single_char_property_change, doc: /* Return the position of next text property or overlay change for a specific property. Scans characters forward from POSITION till it finds a change in the PROP property, then returns the position of the change. -The optional third argument OBJECT is the string or buffer to scan. +If the optional third argument OBJECT is a buffer (or nil, which means +the current buffer), POSITION is a buffer position (integer or marker). +If OBJECT is a string, POSITION is a 0-based index into it. + The property values are compared with `eq'. If the property is constant all the way to the end of OBJECT, return the last valid position in OBJECT. @@ -775,27 +785,32 @@ past position LIMIT; return LIMIT if nothing is found before LIMIT. */) if (NILP (position)) { if (NILP (limit)) - position = make_number (XSTRING (object)->size); + position = make_number (SCHARS (object)); else - position = limit; + { + CHECK_NUMBER (limit); + position = limit; + } } } else { Lisp_Object initial_value, value; - int count = specpdl_ptr - specpdl; + int count = SPECPDL_INDEX (); if (! NILP (object)) CHECK_BUFFER (object); - + if (BUFFERP (object) && current_buffer != XBUFFER (object)) { record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); Fset_buffer (object); } + CHECK_NUMBER_COERCE_MARKER (position); + initial_value = Fget_char_property (position, prop, object); - + if (NILP (limit)) XSETFASTINT (limit, BUF_ZV (current_buffer)); else @@ -826,7 +841,10 @@ DEFUN ("previous-single-char-property-change", doc: /* Return the position of previous text property or overlay change for a specific property. Scans characters backward from POSITION till it finds a change in the PROP property, then returns the position of the change. -The optional third argument OBJECT is the string or buffer to scan. +If the optional third argument OBJECT is a buffer (or nil, which means +the current buffer), POSITION is a buffer position (integer or marker). +If OBJECT is a string, POSITION is a 0-based index into it. + The property values are compared with `eq'. If the property is constant all the way to the start of OBJECT, return the first valid position in OBJECT. @@ -841,24 +859,29 @@ back past position LIMIT; return LIMIT if nothing is found before LIMIT. */) if (NILP (position)) { if (NILP (limit)) - position = make_number (XSTRING (object)->size); + position = make_number (SCHARS (object)); else - position = limit; + { + CHECK_NUMBER (limit); + position = limit; + } } } else { - int count = specpdl_ptr - specpdl; + int count = SPECPDL_INDEX (); if (! NILP (object)) CHECK_BUFFER (object); - + if (BUFFERP (object) && current_buffer != XBUFFER (object)) { record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); Fset_buffer (object); } - + + CHECK_NUMBER_COERCE_MARKER (position); + if (NILP (limit)) XSETFASTINT (limit, BUF_BEGV (current_buffer)); else @@ -871,7 +894,7 @@ back past position LIMIT; return LIMIT if nothing is found before LIMIT. */) Lisp_Object initial_value = Fget_char_property (make_number (XFASTINT (position) - 1), prop, object); - + for (;;) { position = Fprevious_char_property_change (position, limit); @@ -904,7 +927,9 @@ DEFUN ("next-property-change", Fnext_property_change, doc: /* Return the position of next property change. Scans characters forward from POSITION in OBJECT till it finds a change in some text property, then returns the position of the change. -The optional second argument OBJECT is the string or buffer to scan. +If the optional second argument OBJECT is a buffer (or nil, which means +the current buffer), POSITION is a buffer position (integer or marker). +If OBJECT is a string, POSITION is a 0-based index into it. Return nil if the property is constant all the way to the end of OBJECT. If the value is non-nil, it is a position greater than POSITION, never equal. @@ -931,10 +956,10 @@ past position LIMIT; return LIMIT if nothing is found before LIMIT. */) next = i; else next = next_interval (i); - + if (NULL_INTERVAL_P (next)) XSETFASTINT (position, (STRINGP (object) - ? XSTRING (object)->size + ? SCHARS (object) : BUF_ZV (XBUFFER (object)))); else XSETFASTINT (position, next->position); @@ -954,7 +979,7 @@ past position LIMIT; return LIMIT if nothing is found before LIMIT. */) return limit; if (NILP (limit)) XSETFASTINT (limit, (STRINGP (object) - ? XSTRING (object)->size + ? SCHARS (object) : BUF_ZV (XBUFFER (object)))); if (!(next->position < XFASTINT (limit))) return limit; @@ -1000,7 +1025,9 @@ DEFUN ("next-single-property-change", Fnext_single_property_change, doc: /* Return the position of next property change for a specific property. Scans characters forward from POSITION till it finds a change in the PROP property, then returns the position of the change. -The optional third argument OBJECT is the string or buffer to scan. +If the optional third argument OBJECT is a buffer (or nil, which means +the current buffer), POSITION is a buffer position (integer or marker). +If OBJECT is a string, POSITION is a 0-based index into it. The property values are compared with `eq'. Return nil if the property is constant all the way to the end of OBJECT. If the value is non-nil, it is a position greater than POSITION, never equal. @@ -1025,7 +1052,7 @@ past position LIMIT; return LIMIT if nothing is found before LIMIT. */) here_val = textget (i->plist, prop); next = next_interval (i); - while (! NULL_INTERVAL_P (next) + while (! NULL_INTERVAL_P (next) && EQ (here_val, textget (next->plist, prop)) && (NILP (limit) || next->position < XFASTINT (limit))) next = next_interval (next); @@ -1034,7 +1061,7 @@ past position LIMIT; return LIMIT if nothing is found before LIMIT. */) return limit; if (NILP (limit)) XSETFASTINT (limit, (STRINGP (object) - ? XSTRING (object)->size + ? SCHARS (object) : BUF_ZV (XBUFFER (object)))); if (!(next->position < XFASTINT (limit))) return limit; @@ -1047,7 +1074,9 @@ DEFUN ("previous-property-change", Fprevious_property_change, doc: /* Return the position of previous property change. Scans characters backwards from POSITION in OBJECT till it finds a change in some text property, then returns the position of the change. -The optional second argument OBJECT is the string or buffer to scan. +If the optional second argument OBJECT is a buffer (or nil, which means +the current buffer), POSITION is a buffer position (integer or marker). +If OBJECT is a string, POSITION is a 0-based index into it. Return nil if the property is constant all the way to the start of OBJECT. If the value is non-nil, it is a position less than POSITION, never equal. @@ -1092,7 +1121,9 @@ DEFUN ("previous-single-property-change", Fprevious_single_property_change, doc: /* Return the position of previous property change for a specific property. Scans characters backward from POSITION till it finds a change in the PROP property, then returns the position of the change. -The optional third argument OBJECT is the string or buffer to scan. +If the optional third argument OBJECT is a buffer (or nil, which means +the current buffer), POSITION is a buffer position (integer or marker). +If OBJECT is a string, POSITION is a 0-based index into it. The property values are compared with `eq'. Return nil if the property is constant all the way to the start of OBJECT. If the value is non-nil, it is a position less than POSITION, never equal. @@ -1143,9 +1174,10 @@ DEFUN ("add-text-properties", Fadd_text_properties, Sadd_text_properties, 3, 4, 0, doc: /* Add properties to the text from START to END. The third argument PROPERTIES is a property list -specifying the property values to add. -The optional fourth argument, OBJECT, -is the string or buffer containing the text. +specifying the property values to add. If the optional fourth argument +OBJECT is a buffer (or nil, which means the current buffer), +START and END are buffer positions (integers or markers). +If OBJECT is a string, START and END are 0-based indices into it. Return t if any property value actually changed, nil otherwise. */) (start, end, properties, object) Lisp_Object start, end, properties, object; @@ -1252,8 +1284,9 @@ DEFUN ("put-text-property", Fput_text_property, doc: /* Set one property of the text from START to END. The third and fourth arguments PROPERTY and VALUE specify the property to add. -The optional fifth argument, OBJECT, -is the string or buffer containing the text. */) +If the optional fifth argument OBJECT is a buffer (or nil, which means +the current buffer), START and END are buffer positions (integers or +markers). If OBJECT is a string, START and END are 0-based indices into it. */) (start, end, property, value, object) Lisp_Object start, end, property, value, object; { @@ -1267,9 +1300,9 @@ DEFUN ("set-text-properties", Fset_text_properties, Sset_text_properties, 3, 4, 0, doc: /* Completely replace properties of text from START to END. The third argument PROPERTIES is the new property list. -The optional fourth argument, OBJECT, -is the string or buffer containing the text. -If OBJECT is omitted or nil, it defaults to the current buffer. +If the optional fourth argument OBJECT is a buffer (or nil, which means +the current buffer), START and END are buffer positions (integers or +markers). If OBJECT is a string, START and END are 0-based indices into it. If PROPERTIES is nil, the effect is to remove all properties from the designated part of OBJECT. */) (start, end, properties, object) @@ -1283,8 +1316,8 @@ the designated part of OBJECT. */) properties PROPERTIES. OBJECT is the buffer or string containing the text. OBJECT nil means use the current buffer. SIGNAL_AFTER_CHANGE_P nil means don't signal after changes. Value - is non-nil if properties were replaced; it is nil if there weren't - any properties to replace. */ + is nil if the function _detected_ that it did not replace any + properties, non-nil otherwise. */ Lisp_Object set_text_properties (start, end, properties, object, signal_after_change_p) @@ -1305,12 +1338,12 @@ set_text_properties (start, end, properties, object, signal_after_change_p) get rid of its intervals. */ if (NILP (properties) && STRINGP (object) && XFASTINT (start) == 0 - && XFASTINT (end) == XSTRING (object)->size) + && XFASTINT (end) == SCHARS (object)) { - if (! XSTRING (object)->intervals) - return Qt; + if (! STRING_INTERVALS (object)) + return Qnil; - XSTRING (object)->intervals = 0; + STRING_SET_INTERVALS (object, NULL_INTERVAL); return Qt; } @@ -1437,9 +1470,12 @@ DEFUN ("remove-text-properties", Fremove_text_properties, The third argument PROPERTIES is a property list whose property names specify the properties to remove. \(The values stored in PROPERTIES are ignored.) -The optional fourth argument, OBJECT, -is the string or buffer containing the text. -Return t if any property was actually removed, nil otherwise. */) +If the optional fourth argument OBJECT is a buffer (or nil, which means +the current buffer), START and END are buffer positions (integers or +markers). If OBJECT is a string, START and END are 0-based indices into it. +Return t if any property was actually removed, nil otherwise. + +Use set-text-properties if you want to remove all text properties. */) (start, end, properties, object) Lisp_Object start, end, properties, object; { @@ -1522,8 +1558,9 @@ DEFUN ("remove-list-of-text-properties", Fremove_list_of_text_properties, Sremove_list_of_text_properties, 3, 4, 0, doc: /* Remove some properties from text from START to END. The third argument LIST-OF-PROPERTIES is a list of property names to remove. -The optional fourth argument, OBJECT, -is the string or buffer containing the text, defaulting to the current buffer. +If the optional fourth argument OBJECT is a buffer (or nil, which means +the current buffer), START and END are buffer positions (integers or +markers). If OBJECT is a string, START and END are 0-based indices into it. Return t if any property was actually removed, nil otherwise. */) (start, end, list_of_properties, object) Lisp_Object start, end, list_of_properties, object; @@ -1565,10 +1602,12 @@ Return t if any property was actually removed, nil otherwise. */) } } - if (BUFFERP (object)) - modify_region (XBUFFER (object), XINT (start), XINT (end)); - - /* We are at the beginning of an interval, with len to scan */ + /* We are at the beginning of an interval, with len to scan. + The flag `modified' records if changes have been made. + When object is a buffer, we must call modify_region before changes are + made and signal_after_change when we are done. + We call modify_region before calling remove_properties iff modified == 0, + and we call signal_after_change before returning iff modified != 0. */ for (;;) { if (i == 0) @@ -1577,10 +1616,20 @@ Return t if any property was actually removed, nil otherwise. */) if (LENGTH (i) >= len) { if (! interval_has_some_properties_list (properties, i)) - return modified ? Qt : Qnil; + if (modified) + { + if (BUFFERP (object)) + signal_after_change (XINT (start), XINT (end) - XINT (start), + XINT (end) - XINT (start)); + return Qt; + } + else + return Qnil; if (LENGTH (i) == len) { + if (!modified && BUFFERP (object)) + modify_region (XBUFFER (object), XINT (start), XINT (end)); remove_properties (Qnil, properties, i, object); if (BUFFERP (object)) signal_after_change (XINT (start), XINT (end) - XINT (start), @@ -1592,6 +1641,8 @@ Return t if any property was actually removed, nil otherwise. */) unchanged = i; i = split_interval_left (i, len); copy_properties (unchanged, i); + if (!modified && BUFFERP (object)) + modify_region (XBUFFER (object), XINT (start), XINT (end)); remove_properties (Qnil, properties, i, object); if (BUFFERP (object)) signal_after_change (XINT (start), XINT (end) - XINT (start), @@ -1599,8 +1650,14 @@ Return t if any property was actually removed, nil otherwise. */) return Qt; } + if (interval_has_some_properties_list (properties, i)) + { + if (!modified && BUFFERP (object)) + modify_region (XBUFFER (object), XINT (start), XINT (end)); + remove_properties (Qnil, properties, i, object); + modified = 1; + } len -= LENGTH (i); - modified += remove_properties (Qnil, properties, i, object); i = next_interval (i); } } @@ -1610,8 +1667,9 @@ DEFUN ("text-property-any", Ftext_property_any, doc: /* Check text from START to END for property PROPERTY equalling VALUE. If so, return the position of the first character whose property PROPERTY is `eq' to VALUE. Otherwise return nil. -The optional fifth argument, OBJECT, is the string or buffer -containing the text. */) +If the optional fifth argument OBJECT is a buffer (or nil, which means +the current buffer), START and END are buffer positions (integers or +markers). If OBJECT is a string, START and END are 0-based indices into it. */) (start, end, property, value, object) Lisp_Object start, end, property, value, object; { @@ -1646,8 +1704,9 @@ DEFUN ("text-property-not-all", Ftext_property_not_all, doc: /* Check text from START to END for property PROPERTY not equalling VALUE. If so, return the position of the first character whose property PROPERTY is not `eq' to VALUE. Otherwise, return nil. -The optional fifth argument, OBJECT, is the string or buffer -containing the text. */) +If the optional fifth argument OBJECT is a buffer (or nil, which means +the current buffer), START and END are buffer positions (integers or +markers). If OBJECT is a string, START and END are 0-based indices into it. */) (start, end, property, value, object) Lisp_Object start, end, property, value, object; { @@ -1681,23 +1740,26 @@ containing the text. */) /* Return the direction from which the text-property PROP would be inherited by any new text inserted at POS: 1 if it would be inherited from the char after POS, -1 if it would be inherited from - the char before POS, and 0 if from neither. */ + the char before POS, and 0 if from neither. + BUFFER can be either a buffer or nil (meaning current buffer). */ int -text_property_stickiness (prop, pos) - Lisp_Object prop; - Lisp_Object pos; +text_property_stickiness (prop, pos, buffer) + Lisp_Object prop, pos, buffer; { Lisp_Object prev_pos, front_sticky; int is_rear_sticky = 1, is_front_sticky = 0; /* defaults */ - if (XINT (pos) > BEGV) + if (NILP (buffer)) + XSETBUFFER (buffer, current_buffer); + + if (XINT (pos) > BUF_BEGV (XBUFFER (buffer))) /* Consider previous character. */ { Lisp_Object rear_non_sticky; prev_pos = make_number (XINT (pos) - 1); - rear_non_sticky = Fget_text_property (prev_pos, Qrear_nonsticky, Qnil); + rear_non_sticky = Fget_text_property (prev_pos, Qrear_nonsticky, buffer); if (!NILP (CONSP (rear_non_sticky) ? Fmemq (prop, rear_non_sticky) @@ -1707,7 +1769,7 @@ text_property_stickiness (prop, pos) } /* Consider following character. */ - front_sticky = Fget_text_property (pos, Qfront_sticky, Qnil); + front_sticky = Fget_text_property (pos, Qfront_sticky, buffer); if (EQ (front_sticky, Qt) || (CONSP (front_sticky) @@ -1727,7 +1789,8 @@ text_property_stickiness (prop, pos) disambiguate. Basically, rear-sticky wins, _except_ if the property that would be inherited has a value of nil, in which case front-sticky wins. */ - if (XINT (pos) == BEGV || NILP (Fget_text_property (prev_pos, prop, Qnil))) + if (XINT (pos) == BUF_BEGV (XBUFFER (buffer)) + || NILP (Fget_text_property (prev_pos, prop, buffer))) return 1; else return -1; @@ -1851,23 +1914,23 @@ text_property_list (object, start, end, prop) Lisp_Object result; result = Qnil; - + i = validate_interval_range (object, &start, &end, soft); if (!NULL_INTERVAL_P (i)) { int s = XINT (start); int e = XINT (end); - + while (s < e) { int interval_end, len; Lisp_Object plist; - + interval_end = i->position + LENGTH (i); if (interval_end > e) interval_end = e; len = interval_end - s; - + plist = i->plist; if (!NILP (prop)) @@ -1883,14 +1946,14 @@ text_property_list (object, start, end, prop) Fcons (make_number (s + len), Fcons (plist, Qnil))), result); - + i = next_interval (i); if (NULL_INTERVAL_P (i)) break; s = i->position; } } - + return result; } @@ -1907,18 +1970,18 @@ add_text_properties_from_list (object, list, delta) { struct gcpro gcpro1, gcpro2; int modified_p = 0; - + GCPRO2 (list, object); - + for (; CONSP (list); list = XCDR (list)) { Lisp_Object item, start, end, plist, tem; - + item = XCAR (list); start = make_number (XINT (XCAR (item)) + XINT (delta)); end = make_number (XINT (XCAR (XCDR (item))) + XINT (delta)); plist = XCAR (XCDR (XCDR (item))); - + tem = Fadd_text_properties (start, end, plist, object); if (!NILP (tem)) modified_p = 1; @@ -1941,7 +2004,7 @@ extend_property_ranges (list, old_end, new_end) for (; CONSP (list); list = XCDR (list)) { Lisp_Object item, end; - + item = XCAR (list); end = XCAR (XCDR (item)); @@ -2039,7 +2102,7 @@ verify_interval_modification (buf, start, end) if (! NULL_INTERVAL_P (i)) { after = textget (i->plist, Qread_only); - + /* If interval I is read-only and read-only is front-sticky, inhibit insertion. Check for read-only as well as category. */ @@ -2052,14 +2115,14 @@ verify_interval_modification (buf, start, end) if (TMEM (Qread_only, tem) || (NILP (Fplist_get (i->plist, Qread_only)) && TMEM (Qcategory, tem))) - text_read_only (); + text_read_only (after); } } if (! NULL_INTERVAL_P (prev)) { before = textget (prev->plist, Qread_only); - + /* If interval PREV is read-only and read-only isn't rear-nonsticky, inhibit insertion. Check for read-only as well as category. */ @@ -2072,14 +2135,14 @@ verify_interval_modification (buf, start, end) if (! TMEM (Qread_only, tem) && (! NILP (Fplist_get (prev->plist,Qread_only)) || ! TMEM (Qcategory, tem))) - text_read_only (); + text_read_only (before); } } } else if (! NULL_INTERVAL_P (i)) { after = textget (i->plist, Qread_only); - + /* If interval I is read-only and read-only is front-sticky, inhibit insertion. Check for read-only as well as category. */ @@ -2091,13 +2154,13 @@ verify_interval_modification (buf, start, end) if (TMEM (Qread_only, tem) || (NILP (Fplist_get (i->plist, Qread_only)) && TMEM (Qcategory, tem))) - text_read_only (); + text_read_only (after); tem = textget (prev->plist, Qrear_nonsticky); if (! TMEM (Qread_only, tem) && (! NILP (Fplist_get (prev->plist, Qread_only)) || ! TMEM (Qcategory, tem))) - text_read_only (); + text_read_only (after); } } } @@ -2119,7 +2182,7 @@ verify_interval_modification (buf, start, end) do { if (! INTERVAL_WRITABLE_P (i)) - text_read_only (); + text_read_only (textget (i->plist, Qread_only)); if (!inhibit_modification_hooks) { @@ -2177,6 +2240,15 @@ The value of a property in this list is seen as the value for every character that does not have its own value for that property. */); Vdefault_text_properties = Qnil; + DEFVAR_LISP ("char-property-alias-alist", &Vchar_property_alias_alist, + doc: /* Alist of alternative properties for properties without a value. +Each element should look like (PROPERTY ALTERNATIVE1 ALTERNATIVE2...). +If a piece of text has no direct value for a particular property, then +this alist is consulted. If that property appears in the alist, then +the first non-nil value from the associated alternative properties is +returned. */); + Vchar_property_alias_alist = Qnil; + DEFVAR_LISP ("inhibit-point-motion-hooks", &Vinhibit_point_motion_hooks, doc: /* If non-nil, don't run `point-left' and `point-entered' text properties. This also inhibits the use of the `intangible' text property. */); @@ -2191,14 +2263,16 @@ If a character in a buffer has PROPERTY, new text inserted adjacent to the character doesn't inherit PROPERTY if NONSTICKINESS is non-nil, inherits it if NONSTICKINESS is nil. The front-sticky and rear-nonsticky properties of the character overrides NONSTICKINESS. */); - Vtext_property_default_nonsticky = Qnil; + /* Text property `syntax-table' should be nonsticky by default. */ + Vtext_property_default_nonsticky + = Fcons (Fcons (intern ("syntax-table"), Qt), Qnil); staticpro (&interval_insert_behind_hooks); staticpro (&interval_insert_in_front_hooks); interval_insert_behind_hooks = Qnil; interval_insert_in_front_hooks = Qnil; - + /* Common attributes one might give text */ staticpro (&Qforeground); @@ -2242,6 +2316,7 @@ rear-nonsticky properties of the character overrides NONSTICKINESS. */); defsubr (&Stext_properties_at); defsubr (&Sget_text_property); defsubr (&Sget_char_property); + defsubr (&Sget_char_property_and_overlay); defsubr (&Snext_char_property_change); defsubr (&Sprevious_char_property_change); defsubr (&Snext_single_char_property_change); @@ -2261,3 +2336,5 @@ rear-nonsticky properties of the character overrides NONSTICKINESS. */); /* defsubr (&Scopy_text_properties); */ } +/* arch-tag: 454cdde8-5f86-4faa-a078-101e3625d479 + (do not change this comment) */