[DISCUSSION] ext/intl: single-value skeleton formatter (GH-24165)

Hi, GH-24165 asks for unit formatting in intl (e.g. "5 km/h", "5 kilometers per hour"). NumberFormatter can't do it as it sits on the legacy ICU API, and switching it to icu::number would break patterns, attributes and RBNF styles. Since 8.6 it is doable with IntlNumberRangeFormatter by passing the same value twice, but that's a hack. I would like to add a single-value counterpart, IntlNumberFormatter, built from a skeleton: echo IntlNumberFormatter::createFromSkeleton( 'measure-unit/speed-kilometer-per-hour unit-width-full-name', 'fr')->format(5); It would cover units and the rest of what skeletons support, and it would only be available with a recent enough ICU. Cheers.