Computes the effect of any tags applied to this spot in the text.
The values parameter should be initialized to the default settings you wish to use if no tags are in effect. You’d
typically obtain the defaults from get_default_attributes.
get_attributes will modify values, applying the effects of any tags present at
this. If any tags affected values, the function returns true
.
| this |
an iterator |
| values |
a TextAttributes to be filled in |
|
true if |