f642a2aac4
This is a GlyphsApp extension, (partially) documented [here][1], but it is a
useful one as it allows concise glyph insertion using decomposition
without having to maintain the list of glyphs in two places. E.g.
```fea
@upper = [A-Z];
lookup insert {
sub @upper by @upper connector;
} insert;
feature ccmp {
sub @upper' lookup insert x;
} ccmp;
```
As apposed to:
```fea
@upper = [A-Z];
lookup insert {
sub A by A connector;
sub B by B connector;
sub C by C connector;
sub D by D connector;
sub E by E connector;
sub F by F connector;
sub G by G connector;
sub H by H connector;
sub I by I connector;
sub J by J connector;
sub K by K connector;
sub L by L connector;
sub M by M connector;
sub N by N connector;
sub O by O connector;
sub P by P connector;
sub R by R connector;
sub S by S connector;
sub T by T connector;
sub U by U connector;
sub V by V connector;
sub W by W connector;
sub X by X connector;
sub Y by Y connector;
sub Z by Z connector;
} insert;
feature ccmp {
sub @upper' lookup insert x;
} ccmp;
```
1. http://handbook.glyphsapp.com/en/layout/multiple-substitution-with-classes/
32 lines
525 B
Plaintext
32 lines
525 B
Plaintext
feature f1 {
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sub c_t by c t;
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sub f_i by f i;
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sub f_f_i by f f i;
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} f1;
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# Even if it has exactly the same content as feature f1,
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# the lookup should not be shared.
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feature f2 {
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sub c_t by c t;
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sub f_i by f i;
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sub f_f_i by f f i;
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} f2;
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feature f3 {
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sub [f_i f_l f_f_i f_f_l] by f [i l f_i f_l];
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} f3;
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feature f4 {
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sub [f_i f_l f_f_i f_f_l] by [f f f_f f_f] [i l i l];
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} f4;
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@class = [f_i f_l];
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lookup l1 {
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sub @class by f [i l];
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} l1;
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feature f5 {
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sub @class' lookup l1 [i l];
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} f5;
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