Tulu-Tigalari gemination mark and pluta

[eggrobin]

[173-C27] Consensus: Accept U+113D2 TULU-TIGALARI GEMINATION MARK and U+113D3 TULU-TIGALARI SIGN PLUTA, with names, glyphs, and properties as given in L2/22-260, for a future version of the standard. (Ref. section 7 of L2/22-248).

Inconsistencies with Ken’s drafts: Ken’s UnicodeData d8 is missing a trailing semicolon on U+113D3 (like the proposal).
Ken's LineBreak d3 gives Pluta lb=ID rather than BA.

[eggrobin]

I made them both diacritic extenders, since that felt appropriate for a gemination mark and a vowel length mark.

The Grantha pluta is extender but not diacritic, but that seems like an oddity (the sort of things that feel to me like they should be non-diacritic extenders are reduplication/iteration/repetition marks etc.)

[markusicu]

It looks like this one wants to be reviewed after the script as a whole is merged. Or maybe its changes want to be added to the main script addition PR.

[eggrobin]

It looks like this one wants to be reviewed after the script as a whole is merged.

Probably.

[eggrobin]

The Pluta should probably be LB=ID after all. See Norbert's comment on the avagraha:

For Tulu-Tigalari, one of the experts told us that line breaks can occur pretty much at any spacing character. OpenType doesn’t let you reorder characters across line breaks, and doesn’t deal well with line breaks before combining marks, so we can’t quite replicate that. But avagrahas with gc=Lo are treated as a base, so there’s no problem with breaking before them.