+MSInstanceMessageHook4(CGSize, NSString, sizeWithFont,forWidth,lineBreakMode,letterSpacing, UIFont *, font, float, width, UILineBreakMode, mode, float, spacing) {
+ //NSLog(@"XXX: #\"%@\" \"%@\" %g %u %g", self, font, width, mode, spacing);
+
+ WBStringDrawingState *state(stringDrawingState_);
+ if (state == NULL)
+ return MSOldCall(font, width, mode, spacing);
+
+ if (--state->count_ == 0)
+ stringDrawingState_ = state->next_;
+ if (state->info_ == nil)
+ return MSOldCall(font, width, mode, spacing);
+
+ NSString *info([Info_ objectForKey:state->info_]);
+ if (info == nil)
+ return MSOldCall(font, width, mode, spacing);
+
+ NSString *base(state->base_ ?: @"");
+ NSString *extra([NSString stringWithFormat:@"letter-spacing: %gpx", spacing]);
+ return [self sizeWithStyle:[NSString stringWithFormat:@"%@;%@;%@;%@", [font markupDescription], extra, base, info] forWidth:width];
+}
+