VTT sources and fonts built with build chain are incompatible

[m4rc1e]

The glyphs in the VTT hinted sources have nodes which don't match the glyphs generated from the build chain. This means we won't be able to successfully transfer the hints from the VTT sources to the build chain fonts.

glyph: a | top path: build chain | bottom path: VTT source

If I run gftools check-vtt-compatibility --compatible ./source/TTF_VTT_source/OpenSans-Roman.ttf ./fonts/variable_ttf/OpenSans-Roman-VF.ttf, I get the following incompatible glyphs:

partialdiff, ycircumflex, dollar.rvrn, alpha, ucircumflex, g893, uni047C, ae, ecircumflex, comma, D, divide, estimated, braceleft, g887, jcircumflex, ring, exclamdown, quotedblbase, adieresis, tildecomb, X, upsilondieresis, wcircumflex, semicolon, quotereversed, seven.numr, U, phi, V, tau, Abreve, ccaron, germandbls, obreve, perthousand, d, circumflex, OE, emacron, ldot, greater, quotedbl, copyright, R, rcaron, sigma, longs, S, j, g888, brokenbar, periodcentered, A, product, equal, c, umacron, theta, less, r, zeta, G, ccedilla, uni047C.rvrn, xi, second, Idieresis.ss01, hungarumlaut, Lambda, slash, amacron, ubreve, Aringacute, numbersign, Oslash, notequal, K, ampersand, kgreenlandic, nine, gravecomb, backslash, caron.alt, iogonek, aogonek, uring, one.lf, lambda, p, uni047F, g, ecaron, zero.osf, itilde, Idotaccent.ss01, hyphen, thorn, aring, endash, ordfeminine, dieresis, three.numr, ocircumflex, y, braceright, idieresis, g891, one.numr, two.numr, zdotaccent, psi, omicron, gcircumflex.ss02, underscore, gbreve, e, Omegatonos, macron, tonos, sterling, three.osf, dieresistonos, Uhorn, Thorn, ohorn, g.ss02, six.osf, scedilla, Pi, g890, Phi, guilsinglleft, ogonek, napostrophe, infinity, quotedblright, hbar, Q, bracketleft, x, period, bar, bullet, t, gcircumflex, cyrillicbighookUC, Amacron, five.osf, Lslash, eight, dollar, W, two, iacute, ydieresis, dotaccent, question, AE, radical, h, H, s, N, gamma, fraction, logicalnot, franc, anoteleia, quoteright, zero.numr, Imacron, four.numr, z, eight.numr, parenleft, daggerdbl, rho, ebreve, minus, Y, gdotaccent.ss02, peseta, Ibreve.ss01, nine.numr, quotesingle, E, g889, acutecomb, at, asterisk, oe, Z, aringacute, one.osf, asciicircum, asciitilde, emdash, quotedblleft, dcroat, I.ss01, delta, wdieresis, scircumflex, pi, cyrillicbighookLC, paragraph, trademark, l, florin, zcaron, L, multiply, Iotadieresis.ss01, seven, o, Psi, quotesinglbase, Hcircumflex, c.rvrn, ccircumflex, edotaccent, four.osf, two.osf, udieresis, tbar, nu, uni047B, Ldot, ordmasculine, uhungarumlaut, upsilon, abreve, uogonek, gbreve.ss02, Acircumflex, chi, underscoredbl, Adieresis, k, Eth, m, bracketright, P, Aogonek, omega, Emacron, one, Aringacute.rvrn, igrave, Icircumflex.ss01, ellipsis, dotbelowcomb, lessequal, gdotaccent, lozenge, dagger, oslash, B, odieresis, uni047A, ncaron, zero, hcircumflex, Sigma, Ohorn, n, g894, scaron, ohungarumlaut, cedilla, summation, epsilon, uni047D, a, O, three, Imacron.ss01, percent, Eogonek, icircumflex, colon, edieresis, M, registered, integral, Gamma, cent, u, uhorn, guilsinglright, kappa, breve, four, b, cdotaccent, v, currency, J, omacron, degree, beta, Upsilon, q, g892, T, f, hookabovecomb, cyrillichookleft, iota, dong, greaterequal, Tbar, quoteleft, section, minute, Eng, nine.osf, acircumflex, six.numr, plus, parenright, ibreve, seven.osf, lira, F, I, eogonek, approxequal, eight.osf, Xi, Omacron, C, five.numr, yen, Iogonek.ss01, eng, six, plusminus, i, Umacron, eth, caron, imacron, five, w, Theta, exclam, eta, lslash, iotadieresis, uni047E

[m4rc1e]

@laerm0 How did you generate the sources that you're hinting?

[laerm0]

The "hint source", as it is right now, was generated way before I knew of the existence of fontmake so it's just an export from Glyphs. I am re-hinting the Roman now using a file created from your build script. (The italic is also off the build script.)

[m4rc1e]

Please don't hint anything until we have the unhinted version signed off. Otherwise we'll just keep needing to rehint it.

[laerm0]

Okay.