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Re: pos-visible-in-window-p at ellipsis
From: |
Richard Stallman |
Subject: |
Re: pos-visible-in-window-p at ellipsis |
Date: |
Thu, 17 Jan 2008 09:10:42 -0500 |
This happens because the pixel position reported by pos_visible_p can
overshoot when there is invisible text (see the comment in
xdisp.c:1321). It would be rather complicated to compensate for this
(and potentially buggy since pos_visible_p is used by many other
functions).
Why is invisible text difficult? Can't it just skip to the
next visible character? (The comment doesn't say what is hard.)
I think we should simply change the documentation of
pos-visible-in-window-p to say that the pixel positions may not be
accurate when there is invisible text at the specified position.
That is ok if this really is hard. I just wonder why it is hard,
since it seems like it ought to be easy.