Re: [Patch]: Allow overlay arrows to be inserted before the text at column zero rather than splatting it.

[Eli Zaretskii]

> Date: Sun, 18 Aug 2019 19:23:10 +0000
> Cc: address@hidden
> From: Alan Mackenzie <address@hidden>
> 
> > Sorry, I'm confused now: how can you insert the arrow without either
> > moving the rest of the line to the right or overwriting its first few
> > glyphs?  Where does the space for the arrow come from?
> 
> Sorry for being a bit inexact.  In that bit I meant inserting "=>" by
> overwriting the two characters in columns 0 and 1.  We need to be able
> to do this.

But AFAIR that's exactly what the current implementation of
overlay-arrow on TTY frames does.  So how exactly is your
implementation different in this regard, and why did you need any new
code for it?

Still confused.