Re: Window splitting issues with margins

[Eli Zaretskii <eliz@gnu.org>]

> Date: Thu, 26 Nov 2015 17:58:34 +0100
> From: martin rudalics <rudalics@gmx.at>
> CC: joostkremers@fastmail.fm, emacs-devel@gnu.org
> 
>  > When a window's got non-zero width display margin, that margin gets a
>  > portion of the window's glyph matrix allocated for it.  So each glyph
>  > row has a portion that belongs to the margin.  Then any display spec
>  > that writes into the margin produces glyphs which are added to the
>  > margin portion of the glyph row, until all the available width there
>  > is exhausted, at which point any additional text (or images) written
>  > into the margin simply gets discarded (there's no "continuation" or
>  > line-wrapping for display margins).  But until then, you get
>  > effectively the concatenation of everything written into the margins,
>  > in the order the display engine examines the buffer and its associated
>  > display strings/images and overlays.
> 
> So this discussion is not hypothetical.  Does anyone take care of
> inserting spaces between the specs?

Spaces?  What spaces?

> If not this is yet another thing modes had to agree upon.

Sorry, I don't follow.