Re: Variable pitch text filling

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: emacs-devel@gnu.org
> Date: Sat, 27 Nov 2021 15:28:08 +0100
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > It is trivial to add some pixels to the width of a glyph we produce
> > for a character: it just involves enlarging the it->pixel_width and/or
> > the glyph->pixel_width when we produce the glyph for that character.
> 
> Right.  This reminds me -- perhaps we'd want to distribute the extra
> space both before and after the glyph, to centre it within its allotted
> width?

I don't think so, because that would move the leftmost character away
from the window-edge.

> > What would be the exact meaning of "char-spacing 1.0" here?  IOW, how
> > would we compute the number of pixels to add to each glyph's width in
> > this case? what is a "normal character" for this purpose?
> 
> It's the same as for all these width specs -- it's FRAME_COLUMN_WIDTH.

That's not the best possibility, because if some part of the affected
text uses a smaller font, you'd see glyphs that are too-widely spaced?