Missing ligatures with U+AA70 after tone marks

[dscorbett]

Font

NotoSansMyanmar-Regular.ttf
NotoSerifMyanmar-Regular.ttf

Where the font came from, and when

Site: https://noto-website-2.storage.googleapis.com/pkgs/NotoSansMyanmar-unhinted.zip
Site: https://noto-website-2.storage.googleapis.com/pkgs/NotoSerifMyanmar-unhinted.zip
Date: 2018-04-20

Font version

Version 2.001;GOOG;noto-source:20171016:bf6466d78425

Issue

According to UTN notofonts/noto-fonts#11, U+AA70 ligates with a preceding U+1032 or U+103A, ignoring any intervening tone mark (U+109A, U+1089, U+109B, U+1087, U+1088, U+1038, or U+108A), but the only context in which Noto ignores the tone mark is in Noto Serif Myanmar after U+1032.

Character data

ၵဲႇꩰင်းꩰ
U+1075 MYANMAR LETTER SHAN KA
U+1032 MYANMAR VOWEL SIGN AI
U+1087 MYANMAR SIGN SHAN TONE-2
U+AA70 MYANMAR MODIFIER LETTER KHAMTI REDUPLICATION
U+1004 MYANMAR LETTER NGA
U+103A MYANMAR SIGN ASAT
U+1038 MYANMAR SIGN VISARGA
U+AA70 MYANMAR MODIFIER LETTER KHAMTI REDUPLICATION

Screenshot

[ohbendy]

The reduplicated asat should be in the source file.

[simoncozens]

This is fixed in the serif, but not in the sans.