Re: Ligature support

[Lars Ingebrigtsen]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> the same as running all text through harfbuzz.  Which we don't want to
> do in general.

But what's the effect of that, then, I wonder?  Uhm...

(aset composition-function-table
        ?\s
        '([" [^ \n\t]+" 0 font-shape-gstring]))

Is this the correct incantation for "send (almost) all words to
harfbuzz"?  (I.e., a space and then a non-space sequence.)

In xdisp.c with this:

(benchmark-run 1 (while (not (eobp)) (forward-page 1) (redisplay t)))

Without: 1.2s
With: 1.3s

Sending all words to harfbuzz is probably the right solution in a
variable-pitch font buffer anyway (to get proper kerning), but it
probably doesn't make that much sense in a monospace-font buffer.

-- 
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   bloggy blog: http://lars.ingebrigtsen.no