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Re: display bug for empty lines in recent git snapshot

From: Eli Zaretskii
Subject: Re: display bug for empty lines in recent git snapshot
Date: Wed, 17 Nov 2010 07:54:23 -0500

> From: Giorgos Keramidas <address@hidden>
> Cc: Tassilo Horn <address@hidden>, address@hidden
> Date: Wed, 17 Nov 2010 11:43:23 +0100
> On Wed, 17 Nov 2010 10:31:08 +0100, Tassilo Horn <address@hidden> wrote:
> > Hi Giorgos,
> >
> > I've already filed this as bug#7417.
> The change that introduced this bug in my local mirror of the git trunk
> is one committed by Eli on Nov 13:

Yes, it's my bad, sorry.  Cursor positioning is a tricksy business,
with lots of different use-cases.  I guess I failed to test the TTY
display properly after this change.

> I think there's some exception we have to add here for newline
> characters, because they are treated as GLYPHLESS_DISPLAY_THIN_SPACE or
> as GLYPHLESS_DISPLAY_EMPTY_BOX with a width of 1 space, but I am not
> sure what the best way to do this would be.  Maybe Eli has a good idea
> of how this can be fixed?

No, this isn't the problem, I'm quite sure.

The problem is that I installed a fix for displaying glyphless
characters using the zero-width method (see the change in
set_cursor_from_row in the changeset), and that fix inadvertently
introduced this bug.

I will try to fix this as soon as possible.

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