* Harmonize serif variants between `u` and `grek/mu`
Also further adjust Greek Eta.
This makes all serif variants available for lower u also available for lower Greek Mu. Furthermore, as a consequence of being fully merged into `latin/u.ptl`, it now uses the same naming convention for its variants.
* fix u on ss16
Variant is placed between Cyrillic El and Cyrillic En.
In the future, special tailed italic em forms like the ones for el/en would be nice, especially for ss03 which uses a left tailed italic form.
* Eta and Insular R fixes
Most fonts have Greek Small Eta follow lowercase N, most noticeably on Ubuntu mono which inherits its earless cornered shape.
Additionally, using a full retroflex hook for Insular R puts both legs too close to each other. The left leg should descend below the baseline, but the right leg should not.
* fixes
- CYRILLIC CAPITAL LETTER DZZE (`U+A688`) (#1799).
- CYRILLIC SMALL LETTER DZZE (`U+A689`) (#1799).
- MODIFIER LETTER CYRILLIC SMALL DZZE (`U+1E04A`) (#1799).
Double arrows have a minimum gap size equal to the bar size;
Triple arrows have a minimum gap size of 75% of the bar size;
Quadruple arrows will now have a minimum gap size of 62.5% of the bar size.
This follows a trend of halving the distance between 100% and 50% with every additional bar. If there were a quintuple arrow in Unicode, then the gap should be 56.25% of the bar size, and so on, but never reaching 50%.
- COMBINING LATIN SMALL LETTER INSULAR R (`U+1ACD`) (#1808).
- LATIN CAPITAL LETTER INSULAR R (`U+A782`) (#1808).
- LATIN SMALL LETTER INSULAR R (`U+A783`) (#1808).
* I Longa, modifier capital H stroke correction, etc
also cleanup duplicate Latin upsilon with stroke binding which was my fault in the first place.
* undo unnecessary modifier H stroke correction
- LATIN CAPITAL LETTER INSULAR F (`U+A77B`) (#1786).
- LATIN SMALL LETTER INSULAR F (`U+A77C`) (#1786).
- LATIN CAPITAL LETTER INSULAR S (`U+A784`) (#1786).
- LATIN SMALL LETTER INSULAR S (`U+A785`) (#1786).
I was able to find a copy of all fonts emulated under Iosevka, including "Fixed" which I presume is what SS11 is based on, except for Pragmata Pro which I referenced their specimen for, and found that this is how each of these fonts handle the characters in question.
Additionally, PARTIAL DIFFERENTIAL (`U+2202`) is made curly by default, with only `ss02` using the straight style.
- MUSICAL SYMBOL DOUBLE SHARP (`U+1D12A`) (#1299).
- MUSICAL SYMBOL DOUBLE FLAT (`U+1D12B`) (#1299).
- MUSICAL SYMBOL QUARTER TONE SHARP (`U+1D132`).
- MUSICAL SYMBOL QUARTER TONE FLAT (`U+1D133`).
- LATIN SMALL LETTER REVERSED SCRIPT G (`U+1DF01`) (#1597).
- LATIN SMALL LETTER REVERSED K (`U+1DF03`) (#1597).
- LATIN SMALL LETTER REVERSED ENG (`U+1DF07`) (#1597).
