2 Tangut components and 28 Tangut ideographs

[eggrobin]

UTC-177-C28: Consensus: Provisionally assign 2 Tangut components U+18D80 and U+18D81 in a new Tangut Components Supplement block (which spans U+18D80..U+18DFF) and 28 Tangut ideographs in the range U+187F8…U+187FF and U+18D09..U+18D1C, based on document L2/23-246.

https://github.com/unicode-org/sah/issues/275
https://github.com/unicode-org/utc-release-management/issues/59

[181-C60] Consensus: UTC accepts for encoding in Unicode Version 17.0 the following 297 Arabic, Bengali, Han, Kannada, Latin, Oriya, phonetic, Sharada, Tangut, Telugu, and symbol characters for which the code points have previously been provisionally assigned:

    Arabic (40 characters): 088F, FBC3..FBD2, FD90..FD91, FDC8..FDCE, 10EC5..10EC7, 10ED0..10ED8, 10EFA..10EFB
    Bengali (1 character): 09FF
    Han (5 characters): 16FF2..16FF6
    Kannada (1 character): 0CDC
    Latin (2 characters): A7D2, A7D4
    Oriya (2 characters): 0B53..0B54
    Phonetic (30 characters): 1ACF, 1AD0..1ADD, 1AE0..1AEB, A7CE..A7CF, A7F1
    Sharada (8 characters): 11B60..11B67
    Tangut (145 characters): 187F8..187FF, 18D09..18D1E, 18D80..18DF2
    Telugu (1 character): 0C5C
    Symbols (62 characters): 2B96, 1CCFA..1CCFC, 1CEBA..1CED0, 1CEE0..1CEF0, 1F777..1F77A, 1F8D0..1F8D8, 1FA54..1FA57, 1FBFA

[markusicu]

changes mostly lgtm

[markusicu]

tnx all lgtm now