/* Interface code for dealing with text properties.
- Copyright (C) 1993-1995, 1997, 1999-2013 Free Software Foundation,
+ Copyright (C) 1993-1995, 1997, 1999-2014 Free Software Foundation,
Inc.
This file is part of GNU Emacs.
DEFUN ("add-face-text-property", Fadd_face_text_property,
Sadd_face_text_property, 3, 5, 0,
doc: /* Add the face property to the text from START to END.
-The third argument FACE specifies the face to add.
-If any text in the region already has any face properties, this new
-face property will be added to the front of the face property list.
-If the optional fourth argument APPENDP is non-nil, append to the end
-of the face property list instead.
-If the optional fifth argument OBJECT is a buffer (or nil, which means
-the current buffer), START and END are buffer positions (integers or
+FACE specifies the face to add. It should be a valid value of the
+`face' property (typically a face name or a plist of face attributes
+and values).
+
+If any text in the region already has a non-nil `face' property, those
+face(s) are retained. This is done by setting the `face' property to
+a list of faces, with FACE as the first element (by default) and the
+pre-existing faces as the remaining elements.
+
+If optional fourth argument APPEND is non-nil, append FACE to the end
+of the face list instead.
+
+If 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. */)
(Lisp_Object start, Lisp_Object end, Lisp_Object face,
- Lisp_Object appendp, Lisp_Object object)
+ Lisp_Object append, Lisp_Object object)
{
add_text_properties_1 (start, end, list2 (Qface, face), object,
- (NILP (appendp)
+ (NILP (append)
? TEXT_PROPERTY_PREPEND
: TEXT_PROPERTY_APPEND));
return Qnil;
}
len -= LENGTH (i);
i = next_interval (i);
+ if (!i)
+ {
+ if (modified)
+ {
+ if (BUFFERP (object))
+ signal_after_change (XINT (start),
+ XINT (end) - XINT (start),
+ XINT (end) - XINT (start));
+ return Qt;
+ }
+ else
+ return Qnil;
+ }
}
}
\f
int
text_property_stickiness (Lisp_Object prop, Lisp_Object pos, Lisp_Object buffer)
{
- Lisp_Object prev_pos, front_sticky;
- bool is_rear_sticky = 1, is_front_sticky = 0; /* defaults */
+ bool ignore_previous_character;
+ Lisp_Object prev_pos = make_number (XINT (pos) - 1);
+ Lisp_Object front_sticky;
+ bool is_rear_sticky = true, is_front_sticky = false; /* defaults */
Lisp_Object defalt = Fassq (prop, Vtext_property_default_nonsticky);
if (NILP (buffer))
XSETBUFFER (buffer, current_buffer);
- if (CONSP (defalt) && !NILP (XCDR (defalt)))
- is_rear_sticky = 0;
+ ignore_previous_character = XINT (pos) <= BUF_BEGV (XBUFFER (buffer));
- if (XINT (pos) > BUF_BEGV (XBUFFER (buffer)))
- /* Consider previous character. */
+ if (ignore_previous_character || (CONSP (defalt) && !NILP (XCDR (defalt))))
+ is_rear_sticky = false;
+ else
{
- Lisp_Object rear_non_sticky;
-
- prev_pos = make_number (XINT (pos) - 1);
- rear_non_sticky = Fget_text_property (prev_pos, Qrear_nonsticky, buffer);
+ Lisp_Object rear_non_sticky
+ = Fget_text_property (prev_pos, Qrear_nonsticky, buffer);
if (!NILP (CONSP (rear_non_sticky)
? Fmemq (prop, rear_non_sticky)
: rear_non_sticky))
/* PROP is rear-non-sticky. */
- is_rear_sticky = 0;
+ is_rear_sticky = false;
}
- else
- return 0;
/* Consider following character. */
/* This signals an arg-out-of-range error if pos is outside the
|| (CONSP (front_sticky)
&& !NILP (Fmemq (prop, front_sticky))))
/* PROP is inherited from after. */
- is_front_sticky = 1;
+ is_front_sticky = true;
/* Simple cases, where the properties are consistent. */
if (is_rear_sticky && !is_front_sticky)
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) == BUF_BEGV (XBUFFER (buffer))
+ if (ignore_previous_character
|| NILP (Fget_text_property (prev_pos, prop, buffer)))
return 1;
else