[ft-devel] Fw: Re: GETVARIATION and GETDATA

[Hin-Tak Leung]

--- On Mon, 8/8/16, Alexei Podtelezhnikov <address@hidden> wrote:

> On Tue, Aug 2, 2016 at 1:32
> AM, Hin-Tak Leung <address@hidden>
> wrote:
> the apple
> font editor in that era seems to be capable of using
> GETDATA!
> 
> 
> Two more RoyalT
> instructions that did not make it into the specs:
> ADJUST (either 0x8F or 0x90) richard's
> secret instruction
> RAW (0x28) read advance
> width
> Let's see how many fonts with
> those you can find ;)
> 

more of Alexei's findings, to share with the wider community, I hope.

Yes, I remember seeing the "richard's secret instruction" string too. That's 
obviously undocumented :-).

ADJUST is documented-ish - it is both 8F and 0x90 .

/* This code adjusts strokes so that their width is closer to the target width.
 * Only 1 bit is added or subtracted.
 * If the boolean part of the opCode is set, the edge that is moved is specified
 * the first argument; otherwise the edge that needs to move the least is moved.
 */