Using font shaping to put commas in big numbers EVERYWHERE!!
summary
Uses OpenType reverse chaining contextual single substitution to work right-to-left on digit sequences and duplicate digit glyph sets to hold counting state, then swaps in wider glyph outlines that insert fake commas every three digits. Hits broken font libraries but finds one that applies rules in terminals and browsers (needs shaping enabled, e g Kitty), preserves original text on copy, handles monospaced constraints by underlining or glyph-width tweaks, and ends up usable across editors and web pages.
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chapters (11)
- 0:00Intro
- 0:55Background
- 1:23OpenType
- 2:29Outlines
- 2:42Reverse chaining
- 3:44Feature files
- 4:42Alternating capitalization
- 5:17Glyphs
- 6:48Writing Code
- 7:13Fake Colors
- 7:42Fizzbuzz
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