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Fonts version 4.004 (OTF, TTF, WOFF, WOFF2, Variable)
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@frankrolf frankrolf released this 25 Jan 21:10
· 9 commits to release since this release
4.004R
a9eaef8

Major changes

  • Add optical sizes (#57)
    Source Serif now has six weights across five optical sizes, which increases the number of styles from 12 to 60. The variable fonts represent this change through the addition of an opsz axis.

  • Shift text master in design space
    Source Serif’s interpolation setup was conceived in a time before Variable Fonts existed, which means that axis coordinates of masters did not necessarily need to coincide with instance locations. This led to a setup where the Regular style was defined to be slightly off the location of an intermediate master – simply because a heavier Regular looked better. In VF context, this approach was a little problematic, because default masters are presented in the list of available instances.
    In this release, the intermediate master (SourceSerif_1.ufo) was replaced by the Regular instance, and re-established as a new master. Effectively, the intermediate master was shifted while increasing its weight. Ripple effects across the interpolation space (changes of point coordinates, advance widths, kerning values) are small, but they do exist.

  • Change family name (announced in #77)
    Adding optical sizes required re-assessment of spacing, proportions, and kerning decisions in all masters. Additionally, an intermediate master was shifted to clean up the VF design space. While care was taken to keep the existing styles largely equivalent to previous releases, reflow of existing documents is likely.
    The “Pro” label originally was attached to OpenType fonts to indicate their extended language coverage. With Source Serif’s character support far exceeding former “Pro” standards, this label does not have much meaning anymore.

For these reasons, the decision was made to change the family name from Source Serif Pro to Source Serif 4.

Further fixes

  • add Ŋ/ŋ to support Kazakh typesetting in Latin (partly addresses #64)
  • fix soft-dotted i/j (addresses #71)
  • make the mark feature work for Cyrillic (addresses #72)
  • add U+2011 NON-BREAKING HYPHEN (addresses #73)
  • add f_f_t ligature (addresses #79)
  • add all spaces as code points to avoid fallback (addresses #81)
  • revise kerning of Small Caps (addresses #83)
  • update construction of uhorn & related glyphs to avoid clashes
  • space fractions more generously
  • update construction of J/J.sc for better spacing
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