chgat() is weird

[Chris Cramer]

I'm having diffculties with chgat(), but I'm not sure if it's just
because I don't know what it's supposed to do.

What I am observing is that chgat() adds the specified attributes
to the characters, but does not remove attributes. That is, if
you specify no attributes, it does nothing, whereas I expected
it to remove all the attributes. I don't know if this is a bug.

In addition, it doesn't touch the characters; it's necessary to call
touchline() in order for anything to get updated on the screen. I'm
pretty sure this is a bug.

-- 
C. Ray C. aka Christopher Cramer
address@hidden
http://www.pyro.net/~crayc/