Re: fringe bugs and issues (and a couple display margin bugs)

[Eli Zaretskii]

> From: Alveola Petrofsky <alveola@petrofsky.org>
> Date: Mon, 21 Jan 2002 13:11:59 -0800
> 
> The theme of this message is that there is no reason for the
> divergence of X and tty fringe behavior.

The reason is that the display code is different in these two cases.
In Emacs 21, these differences are much more significant than they
were before.  So making the two versions support the same features
got harder.

In other words, these issues wait for motivated individuals who have
enough resources to make them happen.

> Is there any other aspect of fringes that's actually inherently
> specific to window systems?

The way the display code works is totally different.

> * Fringes on wrong side of display margins.
> Fringes should be inside display margins, shouldn't they?

I'm not sure.  Please tell why do you think so.

> In any case they should be consistent on tty and X frames.
> Currently the fringes are inside the display margins on ttys and
> outside on X frames.

That's because tty's don't support fringes at all.  If you refer to
the places where continuation and truncation glyphs are displayed as
the fringe, then the behavior is inconsistent.  But that's not how
Emacs refers to that.  For Emacs display code, fringes simply don't
exist on a character terminal.