Which would be the canonical representation, spacing low line + combining line above or spacing high line + combining line below? Any font that bothered to define proper anchor points for diacritics on modifier symbols would display both sequences identically.
Am Do., 17. Apr. 2025 um 21:41 Uhr schrieb [email protected] via Unicode <[email protected]>: > The way I see it is that U+02C8 and U+02CC are spacing versions of U+030D > and U+0329 diacritics, and therefore to compose a spacing character with > both diacritics, the spacing character of one and combining character of > the other could be used. And there is already precedent of spacing > diacritics composed with combining characters, particularly U+0385 which is > composed as U+00A8 U+0301 (although the precomposed version is encoded as > it's essential for CP869, CP1253, and ISO 8859-7 compatibility). > > Dnia 17 kwietnia 2025 21:05 Doug Ewell via Unicode < > [email protected]> napisał(a): > > [email protected] wrote: > > I really don't get why [the character proposed in] L2/25-061 would be > provisionally assigned to U+208F when it can be composed with > combining characters (ˈ̩ U+02C8 U+0329) or (ˌ̍ U+02CC U+030D) which > should be equivalent to the proposed character, and the potential use > of the existing combining characters is not mentioned in the proposal, > but the proposal owner was informed of the compositions before the > Recommendations to UTC #183 were made. > > > While the quoted passage on the Submitting Character Proposals page makes > sense for “normal letter with diacritic” proposals, which were once > commonplace, I don’t think it’s typical to attach combining marks to a > modifier letter such as U+02C8 or U+02CC, or for UTC to recommend > composition in such cases. > > The NormalizationTest file does not include any instances of combining > characters used with modifier letters, except for a few wacky, > cross-script, stress-test cases involving a combination of Latin letters, > Hebrew accents, and Adlam modifiers. > > Perhaps someone has authoritative info on whether the difference in > handling is policy or just the way it’s been. > > -- > Doug Ewell, CC, ALB | Lakewood, CO, US | ewellic.org > > >
