Re: Fill column indicator functionality

[Eli Zaretskii]

> From: Mattias Engdegård <address@hidden>
> Cc: address@hidden, address@hidden
> Date: Fri, 15 Mar 2019 16:05:33 +0100
> 
> 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.

Emacs never examines the glyphs that the font produces, it just calls
an API that displays text using glyph numbers it receives from the
font back-end.