GNU bug report logs - #52302
28.0.50; [PATCH] Overlay strings should not increment vpos

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Message #20 received at 52302 <at> debbugs.gnu.org (full text, mbox):

From: dick <dick.r.chiang <at> gmail.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 52302 <at> debbugs.gnu.org
Subject: Re: bug#52302: 28.0.50; [PATCH] Overlay strings should not
 increment vpos
Date: Sun, 05 Dec 2021 17:10:05 -0500

> Are you using "invisible" here as in "text with the invisible
> property"?

Good question.  I'm also annoyed when comments use "invisible"
interchangeably.  I have come to refer to display prop strings as
"unvisible," so my bad.

> I see just one call to move_it_vertically_backward, not "as many as".

Two:

move_it_vertically (&it, unit - bottom_y); // unit - bottom_y is zero
move_it_by_lines (&it, 0); // that's the second one

> And the overall motivation is also not clear -- is it just to save us
> one call to move_it_vertically_backward?

I want to live in an xdisp world where calling move_it_vertically_backward(0)
once gets me to line start without exception.

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