> On Dec 1, 2016, at 11:20 AM, Alastair Houghton <alast...@alastairs-place.net> > wrote: > > On 1 Dec 2016, at 19:05, Doug Hill <cocoa...@breaqz.com> wrote: >> >> Just made another breakthrough. I finally figured out why we have the >> vertically centerd colon (I’ll now call it VCC) by default but has >> requirements of numbers on either side of the colon. >> The SF font setting is “Contextual Alternatives” (I’ll now call it CA). When >> CA is on, it will use the logic of numbers on either side of a colon to get >> VCC. Turning off CA turns off this logic and no VCC. But even if CA is on, >> and you have a character stream that isn’t <number>:<number>, you can turn >> on VCC explicitly with it’s own selector to get that behavior. >> >> Other than VCC I’m not sure what other contextual alternatives there are. >> Fractions didn’t seem to do anything differently. > > I think we’ve headed off topic somewhat, so this is likely my final word on > the subject. Contextual alternates’ usual abbreviation is “calt” (which is > its OpenType tag). It might also, at this point, be worth pointing you at > the OpenType specification > > https://www.microsoft.com/en-us/Typography/OpenTypeSpecification.aspx > > and in particular the registered features page: > > https://www.microsoft.com/typography/otspec/featurelist.htm > > The pages on advanced layout may also be informative.
Thanks for the info! At this point, I think we figured out the original VCC bug, and I was able to document a number of SF font features and how to easily use them. I hope this has some value to the developer community; at the very least Google searches will now bring up info about these features. Going forward, I personally hope I don’t have to do a deep dive into the OpenType spec everytime I want to use cool features of San Francisco. ;) Thanks again everyone. Doug Hil _______________________________________________ Cocoa-dev mailing list (Cocoafirstname.lastname@example.org) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com