Implement the arc to curve points calculation using the original
svg.path library and use the curve points for the pen.
The Arc class and methods to parameterize and get curve points are
copied.
This makes the svg to glif conversion possible for any SVGs.
A multiple substitution may have a single destination, in which case
it will look just like a single substitution. So if there are both
multiple and single substitutions, upgrade all the single ones to
multiple substitutions. Previously we would just give an error message
in the builder and abort, which means certain valid OpenType lookups
can’t be represented by feature files.
This is the same logic implemented by FontForge (actually the
explanation above is almost copied verbatim from its source), makeotf
does not do this AFAIK but I consider it a bug not a feature.
Fixes https://github.com/fonttools/fonttools/issues/612
The split-glyf-to-one-glyph-per-file feature is only partially implemented,
as it was discussed here:
https://github.com/fonttools/fonttools/issues/153#issuecomment-346677171
I need to cut a bugfix release today, but I don't want to ship this as is.
I prefer to temporarily rever, tag a release from master branch, then
revert it again to its present state so that bamidei can complete his
work.
---
Revert "[glyf] make splitGlyphs output more compact"
This reverts commit d08d635a93289982b028aacd3b9039fbe742f3e8.
Revert "more whitespace"
This reverts commit bd030f61c6b360fd360632bbc6c19abb057c9a24.
Revert "minor whitespace"
This reverts commit f2a8c787b13b92ae0e0f61477e584316144747c7.
Revert "Merge pull request #1035 from bamidei/split_g_l_y_f_to_one_per_file"
This reverts commit 17b89d9dde7691dbbb6815efba92eff446af62ac, reversing
changes made to b8482d9666f08d3603ee93d3ca52931550f715fc.
This should fix https://github.com/fonttools/fonttools/issues/1119
Running `ftxvalidator -T tt0004c_#1.ttf` no longer produces this error
message, but passes with 'NA'
```
Fatal
post: The name data overflow the table bounds.
kATSFontTestSeverityFatalError
```
