Add straight spur variant for lowercase a #55
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This commit adds the straight spur variant of U+0061 ('a').
This commit adds the straight spur variant of U+00AA ('ª').
This commit adds the straight spur variant of U+00E0 ('à').
This commit adds the straight spur variant of U+00E1 ('á').
This commit adds the straight spur variant of U+00E2 ('â').
This commit adds the straight spur variant of U+00E3 ('ã').
This commit adds the straight spur variant of U+00E4 ('ä').
This commit adds the straight spur variant of U+00E5 ('å').
This commit adds the straight spur variant of U+0101 ('ā').
This commit adds the straight spur variant of U+0103 ('ă').
This commit adds the straight spur variant of U+0105 ('ą').
This commit adds the straight spur variant of U+0430 ('а').
This commit adds the straight spur variant of U+04D1 ('ӑ').
This commit adds the straight spur variant of U+04D3 ('ӓ').
Apparently the order of the points matters for ttfautohint, and to fix the bloated 'a' bowl on this glyph, the outer outline has to start from point (1062, 639). Not sure why either.
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These patches may replace the default, curved-spur lowercase 'a' shape (and its diacritical variants) of Hack v2+ with a straight-spur variant found in version 1 of Hack (and the default 'a' shape in DejaVu Sans Mono).
Admittedly a minor design alteration, this patch has a side effect of fixing the bloated 'a' bowl that ttfautohint produces at size 12ppem (9pt at 96dpi) with the default curved-spur variant. Manual hinting should take care of this issue, but as far as I understand it, using the
hintslightsetting on fontconfig implicitly uses freetype's autohinter [1][2] hence foregoing the font's built-in hinting instructions. Here's a comparison of the hinting result at 12ppem:I don't have access to Glyphs.app, however—this patch was hand-typed in a text editor and previewed in FontForge, hence its results may be rudimentary and need further fine-tuning. Let me know what you think, either way.