Parse a single Brazilian-style Munsell color string into hue/value/chroma

Handles the FEBR / SiBCS-canonical "<matiz> <valor>/<croma>" format with PT-BR comma-decimal in any numeric component (e.g. "2,5YR 3/6" -> hue "2.5YR", value 3, chroma 6; "10YR 5,5/3,5" -> hue "10YR", value 5.5, chroma 3.5).

Usage

.parse_febr_munsell(s)

Details

Returns c(hue = NA_character_, value = NA_real_, chroma = NA_real_) when the input is empty / unparseable.