Function starts_non_ideographic_text_presentation_seq 

pub fn starts_non_ideographic_text_presentation_seq(c: char) -> bool

Returns true if c has default emoji presentation, but forms a [text presentation sequence] (https://www.unicode.org/reports/tr51/#def_text_presentation_sequence) when followed by '\u{FEOE}', and is not ideographic. Such sequences are considered to have width 1.