Re: Tk Unicode is slow

Keith Nash wrote: 
Ideally, one would be able to create a virtual font that borrows different
glyphs from different real fonts.  It sounds as if this is what Tcl's font
lookup actually does


Yes.

but it doesn't cache the virtual font metadata, and
it doesn't tell us what it is.


It does cache the metadata, within the font as long as the font (or is
it as long as the font is in use? This stuff is fairly deep in the guts
of font management.) You're right that it doesn't let you inspect (let
alone control) the real font data though. That sucks.

Donal.
.

Relevant Pages