simpler case. */
return (Fget_text_property (position, prop, object));
}
+\f
+DEFUN ("next-char-property-change", Fnext_char_property_change,
+ Snext_char_property_change, 1, 2, 0,
+ "Return the position of next text property or overlay change.\n\
+This scans characters forward from POSITION in OBJECT till it finds\n\
+a change in some text property, or the beginning or end of an overlay,\n\
+and returns the position of that.\n\
+If none is found, the function returns (point-max).\n\
+\n\
+If the optional third argument LIMIT is non-nil, don't search\n\
+past position LIMIT; return LIMIT if nothing is found before LIMIT.")
+ (position, limit)
+ Lisp_Object position, limit;
+{
+ Lisp_Object temp;
+
+ temp = Fnext_overlay_change (position);
+ if (! NILP (limit))
+ {
+ CHECK_NUMBER (limit, 2);
+ if (XINT (limit) < XINT (temp))
+ temp = limit;
+ }
+ return Fnext_property_change (position, Qnil, temp);
+}
+
+DEFUN ("previous-char-property-change", Fprevious_char_property_change,
+ Sprevious_char_property_change, 1, 2, 0,
+ "Return the position of previous text property or overlay change.\n\
+Scans characters backward from POSITION in OBJECT till it finds\n\
+a change in some text property, or the beginning or end of an overlay,\n\
+and returns the position of that.\n\
+If none is found, the function returns (point-max).\n\
+\n\
+If the optional third argument LIMIT is non-nil, don't search\n\
+past position LIMIT; return LIMIT if nothing is found before LIMIT.")
+ (position, limit)
+ Lisp_Object position, limit;
+{
+ Lisp_Object temp;
+ temp = Fprevious_overlay_change (position);
+ if (! NILP (limit))
+ {
+ CHECK_NUMBER (limit, 2);
+ if (XINT (limit) > XINT (temp))
+ temp = limit;
+ }
+ return Fprevious_property_change (position, Qnil, temp);
+}
+\f
DEFUN ("next-property-change", Fnext_property_change,
Snext_property_change, 1, 3, 0,
"Return the position of next property change.\n\
- (STRINGP (object))));
return position;
}
-
+\f
/* Callers note, this can GC when OBJECT is a buffer (or nil). */
DEFUN ("add-text-properties", Fadd_text_properties,
i = next_interval (i);
}
}
-
+\f
DEFUN ("text-property-any", Ftext_property_any,
Stext_property_any, 4, 5, 0,
"Check text from START to END for property PROPERTY equalling VALUE.\n\
}
return Qnil;
}
-
+\f
#if 0 /* You can use set-text-properties for this. */
DEFUN ("erase-text-properties", Ferase_text_properties,
Return t if any property value actually changed, nil otherwise. */
/* Note this can GC when DEST is a buffer. */
-
+\f
Lisp_Object
copy_text_properties (start, end, src, pos, dest, prop)
Lisp_Object start, end, src, pos, dest, prop;
defsubr (&Stext_properties_at);
defsubr (&Sget_text_property);
defsubr (&Sget_char_property);
+ defsubr (&Snext_char_property_change);
+ defsubr (&Sprevious_char_property_change);
defsubr (&Snext_property_change);
defsubr (&Snext_single_property_change);
defsubr (&Sprevious_property_change);