CLIIF UAX #31 identifier tables -- portable summary
unicode-version  15.0.0
xid-start        666 ranges  digest #xAFA4241FD319A5AA
xid-continue     775 ranges  digest #x6CEDE236FAF0112E

sanity table  (code-point  start  continue  name)
  U+00041  1  1  LATIN A
  U+0007A  1  1  LATIN z
  U+00030  0  1  DIGIT 0
  U+0005F  0  1  LOW LINE _
  U+0002D  0  0  HYPHEN-MINUS -
  U+00020  0  0  SPACE
  U+0003A  0  0  COLON :
  U+0002F  0  0  SOLIDUS /
  U+003B1  1  1  GREEK SMALL ALPHA
  U+00300  0  1  COMBINING GRAVE
  U+000B7  0  1  MIDDLE DOT
  U+04E2D  1  1  CJK 'zhong'
  U+10000  1  1  LINEAR B SYLLABLE A
  U+1F600  0  0  GRINNING FACE (emoji)
  U+0000A  0  0  LINE FEED
