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Re: Fill column indicator functionality


From: Mattias Engdegård
Subject: Re: Fill column indicator functionality
Date: Fri, 15 Mar 2019 16:05:33 +0100
User-agent: Evolution 3.30.5 (3.30.5-1.fc29)

fre 2019-03-15 klockan 16:24 +0200 skrev Eli Zaretskii:

> Unfortunately, this is not currently possible, not without
> significant changes in how the Emacs display engine works
> internally.  The display routines are currently called in a way that
> doesn't allow them to have a window-global view of the display, not
> even a way of knowing what's on the previous and the next screen
> lines.

Sorry, I was being unclear. What I meant to say was that if some box-
drawing glyph does not go all the way to the edge of its cell, then
Emacs could attempt to improve on the rendering of that glyph instead
of being bound by the font. It would not need to know anything about
what is drawn elsewhere. It's just a way of fixing the font.

I don't even know how common the problem is with modern fonts, or what
the underlying causes are. I've mostly observed it with scaled pixel
fonts.





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