> there were a couple of problems that I just
> couldn't resolve, especially regarding the characters with an iota
> subscript:
Indeed. This is a problem with the Fontforge code applying the GSUB
features: the 'grbl' feature is defined by two lookups, one being a list
of single substitutions (h -> eta) and the other a list of ligature
substitutions (h bar -> eta with subscribed iota). Now, since the latter
has to take precedence to avoid conflicts, I explicitely put it before
the other, but it seems that Fontforge ignores this and applies the list
of single substitutions before the other (this is confirmed by the cache
file [EMAIL PROTECTED] where the lookup with the single
substitutions, called "GreelBabelLookupSimple", appears first in the
gsub table).
Note that this doesn't happen for substitutions *inside* a lookup (so
things like "greater eta bar" and "eta bar" don't conflict since they're
both ligature substitutions and I put the former before in the list, and
the substitutions are correctly applied. As a far as I understand, this
behaviour is actually compliant with the Opentype specifications and is
quite widespread among typesetting engines and so it is not (only)
Fontforge's fault; but, needless to say, it is nevertheless annoying.
(In more crude terms: Opentype does not specify anything in that respect,
so manufacturers of typesetting software can do whatever they want ...)
Thomas: to solve the problem at hand, you can try the new feature
file I send along with a small test (I simply define a new feature that is
to be applied after 'grbl', to deal specifically with the subscribed iotas).
Arthur
# An Opentype feature to replace the Babel input scheme
# Not quite complete; some rhos with breathings and accents are missing (where
# are they?) and the final sigma isn't accounted for.
lookup GreekBabelLookupSimple {
lookupflag 0 ;
sub a by alpha ;
sub b by beta ;
sub g by gamma ;
sub d by delta ;
sub e by epsilon ;
sub z by zeta ;
sub h by eta ;
sub j by theta ;
sub i by iota ;
sub k by kappa ;
sub l by lambda ;
sub m by mu ;
sub n by nu ;
sub x by xi ;
sub o by omicron ;
sub p by pi ;
sub r by rho ;
sub c by sigmafinal ;
sub s by sigma ;
sub t by tau ;
sub u by upsilon ;
sub f by phi ;
sub q by chi ;
sub y by psi ;
sub w by omega ;
sub A by Alpha ;
sub B by Beta ;
sub G by Gamma ;
sub D by Delta ;
sub E by Epsilon ;
sub Z by Zeta ;
sub H by Eta ;
sub J by Theta ;
sub I by Iota ;
sub K by Kappa ;
sub L by Lambda ;
sub M by Mu ;
sub N by Nu ;
sub X by Xi ;
sub O by Omicron ;
sub P by Pi ;
sub R by Rho ;
sub C by Uni03C2 ;
sub S by Sigma ;
sub T by Tau ;
sub U by Upsilon ;
sub F by Phi ;
sub Q by Chi ;
sub Y by Psi ;
sub W by Omega ;
sub semicolon by periodcentered ;
} GreekBabelLookupSimple ;
lookup GreekBabelLookupMultiple {
lookupflag 1 ;
# sub s 'space by sigmafinal ;
sub greater a by uni1F00 ;
sub greater A by uni1F08 ;
sub greater e by uni1F10 ;
sub greater E by uni1F18 ;
sub greater h by uni1F20 ;
sub greater H by uni1F28 ;
sub greater i by uni1F30 ;
sub greater I by uni1F38 ;
sub greater o by uni1F40 ;
sub greater O by uni1F48 ;
sub greater u by uni1F50 ;
# sub greater U by uni1F58 ;
sub greater w by uni1F60 ;
sub greater W by uni1F68 ;
sub greater grave a by uni1F02 ;
sub greater grave A by uni1F0A ;
sub greater grave e by uni1F12 ;
sub greater grave E by uni1F1A ;
sub greater grave h by uni1F22 ;
sub greater grave H by uni1F2A ;
sub greater grave i by uni1F32 ;
sub greater grave I by uni1F3A ;
sub greater grave o by uni1F42 ;
sub greater grave O by uni1F4A ;
sub greater grave u by uni1F52 ;
# sub greater grave U by uni1F5A ;
sub greater grave w by uni1F62 ;
sub greater grave W by uni1F6A ;
sub greater quotesingle a by uni1F04 ;
sub greater quotesingle A by uni1F0C ;
sub greater quotesingle e by uni1F14 ;
sub greater quotesingle E by uni1F1C ;
sub greater quotesingle h by uni1F24 ;
sub greater quotesingle H by uni1F2C ;
sub greater quotesingle i by uni1F34 ;
sub greater quotesingle I by uni1F3C ;
sub greater quotesingle o by uni1F44 ;
sub greater quotesingle O by uni1F4C ;
sub greater quotesingle u by uni1F54 ;
sub greater quotesingle U by uni1F5C ;
sub greater quotesingle w by uni1F64 ;
sub greater quotesingle W by uni1F6C ;
sub greater asciitilde a by uni1F06 ;
sub greater asciitilde A by uni1F0E ;
sub greater asciitilde e by uni1F16 ;
sub greater asciitilde E by uni1F1E ;
sub greater asciitilde h by uni1F26 ;
sub greater asciitilde H by uni1F2E ;
sub greater asciitilde i by uni1F36 ;
sub greater asciitilde I by uni1F3E ;
sub greater asciitilde o by uni1F46 ;
sub greater asciitilde O by uni1F4E ;
sub greater asciitilde u by uni1F56 ;
sub greater asciitilde U by uni1F5E ;
sub greater asciitilde w by uni1F66 ;
sub greater asciitilde W by uni1F6E ;
sub less a by uni1F01 ;
sub less A by uni1F09 ;
sub less e by uni1F11 ;
sub less E by uni1F19 ;
sub less h by uni1F21 ;
sub less H by uni1F29 ;
sub less i by uni1F31 ;
sub less I by uni1F39 ;
sub less o by uni1F41 ;
sub less O by uni1F49 ;
sub less u by uni1F51 ;
sub less U by uni1F59 ;
sub less w by uni1F61 ;
sub less W by uni1F69 ;
sub less grave a by uni1F03 ;
sub less grave A by uni1F0B ;
sub less grave e by uni1F13 ;
sub less grave E by uni1F1B ;
sub less grave h by uni1F23 ;
sub less grave H by uni1F2B ;
sub less grave i by uni1F33 ;
sub less grave I by uni1F3B ;
sub less grave o by uni1F43 ;
sub less grave O by uni1F4B ;
sub less grave u by uni1F53 ;
sub less grave U by uni1F5B ;
sub less grave w by uni1F63 ;
sub less grave W by uni1F6B ;
sub less quotesingle a by uni1F05 ;
sub less quotesingle A by uni1F0D ;
sub less quotesingle e by uni1F15 ;
sub less quotesingle E by uni1F1D ;
sub less quotesingle h by uni1F25 ;
sub less quotesingle H by uni1F2D ;
sub less quotesingle i by uni1F35 ;
sub less quotesingle I by uni1F3D ;
sub less quotesingle o by uni1F45 ;
sub less quotesingle O by uni1F4D ;
sub less quotesingle u by uni1F55 ;
sub less quotesingle U by uni1F5D ;
sub less quotesingle w by uni1F65 ;
sub less quotesingle W by uni1F6D ;
sub less asciitilde a by uni1F07 ;
sub less asciitilde A by uni1F0F ;
sub less asciitilde e by uni1F17 ;
sub less asciitilde E by uni1F1F ;
sub less asciitilde h by uni1F27 ;
sub less asciitilde H by uni1F2F ;
sub less asciitilde i by uni1F37 ;
sub less asciitilde I by uni1F3F ;
sub less asciitilde o by uni1F47 ;
sub less asciitilde O by uni1F4F ;
sub less asciitilde u by uni1F57 ;
sub less asciitilde U by uni1F5F ;
sub less asciitilde w by uni1F67 ;
sub less asciitilde W by uni1F6F ;
sub grave a by uni1F70 ;
sub quotesingle a by uni1F71 ;
sub grave e by uni1F72 ;
sub quotesingle e by uni1F73 ;
sub grave h by uni1F74 ;
sub quotesingle h by uni1F75 ;
sub grave i by uni1F76 ;
sub quotesingle i by uni1F77 ;
sub grave o by uni1F78 ;
sub quotesingle o by uni1F79 ;
sub grave u by uni1F7A ;
sub quotesingle u by uni1F7B ;
sub grave w by uni1F7C ;
sub quotesingle w by uni1F7D ;
sub grave A by uni1FBA ;
sub quotesingle A by uni1FBB ;
sub grave E by uni1FC8 ;
sub quotesingle E by uni1FC9 ;
sub grave H by uni1FCA ;
sub quotesingle H by uni1FCB ;
sub grave I by uni1FDA ;
sub quotesingle I by uni1FDB ;
sub grave U by uni1FEA ;
sub quotesingle U by uni1FEB ;
sub grave W by uni1FFA ;
sub quotesingle W by uni1FFB ;
sub greater a bar by uni1F80 ;
sub greater A bar by uni1F88 ;
sub greater h bar by uni1F90 ;
sub greater H bar by uni1F98 ;
sub greater w bar by uni1FA0 ;
sub greater W bar by uni1FA8 ;
sub greater grave a bar by uni1F82 ;
sub greater grave A bar by uni1F8A ;
sub greater grave h bar by uni1F92 ;
sub greater grave H bar by uni1F9A ;
sub greater grave w bar by uni1FA2 ;
sub greater grave W bar by uni1FAA ;
sub greater quotesingle a bar by uni1F84 ;
sub greater quotesingle A bar by uni1F8C ;
sub greater quotesingle h bar by uni1F94 ;
sub greater quotesingle H bar by uni1F9C ;
sub greater quotesingle w bar by uni1FA4 ;
sub greater quotesingle W bar by uni1FAC ;
sub greater asciitilde a bar by uni1F86 ;
sub greater asciitilde A bar by uni1F8E ;
sub greater asciitilde h bar by uni1F96 ;
sub greater asciitilde H bar by uni1F9E ;
sub greater asciitilde w bar by uni1FA6 ;
sub greater asciitilde W bar by uni1FAE ;
sub less a bar by uni1F81 ;
sub less A bar by uni1F89 ;
sub less h bar by uni1F91 ;
sub less H bar by uni1F99 ;
sub less w bar by uni1FA1 ;
sub less W bar by uni1FA9 ;
sub less grave a bar by uni1F83 ;
sub less grave A bar by uni1F8B ;
sub less grave h bar by uni1F93 ;
sub less grave H bar by uni1F9B ;
sub less grave w bar by uni1FA3 ;
sub less grave W bar by uni1FAB ;
sub less quotesingle a bar by uni1F85 ;
sub less quotesingle A bar by uni1F8D ;
sub less quotesingle h bar by uni1F95 ;
sub less quotesingle H bar by uni1F9D ;
sub less quotesingle w bar by uni1FA5 ;
sub less quotesingle W bar by uni1FAD ;
sub less asciitilde a bar by uni1F87 ;
sub less asciitilde A bar by uni1F8F ;
sub less asciitilde h bar by uni1F97 ;
sub less asciitilde H bar by uni1F9F ;
sub less asciitilde w bar by uni1FA7 ;
sub less asciitilde W bar by uni1FAF ;
sub grave a bar by uni1FB2 ;
sub quotesingle a bar by uni1FB4 ;
sub grave h bar by uni1FC2 ;
sub quotesingle h bar by uni1FC4 ;
sub grave w bar by uni1FD2 ;
sub quotesingle w bar by uni1FD4 ;
sub asciitilde a by uni1FB6 ;
sub asciitilde a bar by uni1FB7 ;
sub asciitilde h by uni1FC6 ;
sub asciitilde h bar by uni1FC7 ;
sub asciitilde w by uni1FD6 ;
sub asciitilde w bar by uni1FD7 ;
sub greater r by uni1FE4 ;
sub less r by uni1FE5 ;
sub less R by uni1FEC ;
} GreekBabelLookupMultiple ;
lookup GreekBabel2LookupMultiple {
lookupflag 1 ;
sub alpha bar by uni1FB3 ;
sub eta bar by uni1FC3 ;
sub omega bar by uni1FF3 ;
} GreekBabel2LookupMultiple ;
feature grbl {
script DFLT ;
language dflt ;
lookup GreekBabelLookupMultiple ;
lookup GreekBabelLookupSimple ;
script latn;
language dflt ;
lookup GreekBabelLookupMultiple ;
lookup GreekBabelLookupSimple ;
} grbl ;
feature grb2 {
script DFLT ;
language dflt ;
lookup GreekBabel2LookupMultiple ;
script latn;
language dflt ;
lookup GreekBabel2LookupMultiple ;
} grb2 ;
% For Thomas Schmitz.
% Deal with subscribed iotas
\installfontfeature[otf][grbl]
\installfontfeature[otf][grb2]
\definefontfeature
[greek-babel]
[mode=node,language=dflt,script=latn,
grbl=yes,grb2=yes,featurefile=greek-babel-extended.fea]
\font\bosphoros=name:BosporosU*greek-babel at 20pt
\starttext
\catcode`\~=11
\catcode`\|=11
\bosphoros
a| h| w|
\stoptext
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