Support for U+1EEF0 U+1EEF1 U+023B8 U+023B9 U+023B7 U+02422?

[Firestar-Reimu]

See https://texdoc.org/serve/unimath-symbols.pdf/0

U+1EEF0 U+1EEF1 U+023B8 U+023B9 U+023B7 these are characters that XITS have but STIX2 do not have

U+02422 is Latin Modern Math have but STIX2 do not have

[tiroj]

Thank you for noting these.

U+1EEF0 and U+1EEF1 are Arabic math characters, part of a whole system of math notation in Arabic (now mostly limited to pre-university math teaching, and only in some countries). The STIX Two fonts do not support Arabic script and, hence, do not include these or other characters from the Unicode Arabic Mathematical Alphabetic Symbols block. I am unsure why XITS includes those two characters,

U+23B7 U+023B8 and U+023B9 are for building multi-line graphics in terminal emulators. They could be added to the STIX Two Math font (we already have some boxdraw and shading characters), but I wonder if anyone would use them? Since STIX Two is not a monospaced font, it wouldn’t work in a terminal emulator.

U+2422 BLANK SYMBOL could be added. Again, though, is this something anyone actually uses?