Should it be possible to suppress the ligation of a base character and a visually following spacing mark in plain text?
The example I have in minf is the sequence <U+1A36 TAI THAM LETTER NA, U+1A63 TAI THAM VOWEL SIGN AA>. It may be desirable to suppress the ligation because both ligands have subscript consonants. However, if I write <NA, ..., ZWNJ, SIGN AA, ...>, the Universal Shaping Engine decides that the ZWNJ triggers a new syllable, and inserts a dotted circle before SIGN AA. (The dotted circle after SIGN AA results from a failure to read the proposal for the Lanna script as it was then called.) Richard.
