- From: Christopher Slye <cslye@adobe.com>
- Date: Wed, 31 Mar 2010 16:15:08 -0700
- To: www-style <www-style@w3.org>
On Mar 31, 2010, at 1:04 PM, John Hudson wrote: > Actually, I think this concept of 'Titling Capitals' needs to be > re-thought. The OpenType Layout feature <titl> does not specify capitals > at all, only 'Titling' forms. While a number of font implementations > provide only capitals in Titling form, there is nothing in the feature > description to limit glyph coverage to capitals. Indeed. The 'titl' feature in Adobe Garamond Pro contains what was the (pre-OpenType) Titling font of that family, which is essentially a complete MacRoman font, minus lowercase. In other words, it has a full set of titling forms for punctuation, numerals, currency, etc., in addition to uppercase letters. > Not if implemented in OpenType Layout. A font can support arbitrary > fractions, using contextual substitutions of numerator and denominator, > without reliance on Unicode predefined fractions or, indeed, even the > presence of precomposed glyphs for such fractions. Correct -- but note also that in most Adobe fonts with arbitrary fractions, the feature does produce precomposed fraction "ligatures" when available (typically one-half, fourths, thirds, and eighths) and arbitrary fractions for anything else. (In the latter cases, this would probably include a substitution from a default slash character to a stylistic alternate that looks like a fraction-slash.) Anyhow, the current description implies that feature 'frac' would be applied to a run of text, so from an OpenType perspective this seems correct. -C
Received on Wednesday, 31 March 2010 23:15:38 UTC