space_commands.test

<<< tex
a\thinspace b\negthinspace c\thickspace d\negthickspace e\negmedspace f

>>> native
[ EIdentifier "a"
, ESpace (1 % 6)
, EIdentifier "b"
, ESpace ((-1) % 6)
, EIdentifier "c"
, ESpace (5 % 18)
, EIdentifier "d"
, ESpace ((-5) % 18)
, EIdentifier "e"
, ESpace ((-2) % 9)
, EIdentifier "f"
]