tokens.test

<<< tex
\newcommand{\my}[1]{(#1)}


% diacritics
\tilde\phi

% unary operators
\sqrt\phi

% binary operators
\frac\phi\xi
\frac \phi {\xi}
\frac {\phi} \xi

% custom
\my\phi
\my{\phi}\xi

>>> native
[ EOver False (EIdentifier "\981") (ESymbol Accent "\771")
, ESqrt (EIdentifier "\981")
, EFraction NormalFrac (EIdentifier "\981") (EIdentifier "\958")
, EFraction NormalFrac (EIdentifier "\981") (EIdentifier "\958")
, EFraction NormalFrac (EIdentifier "\981") (EIdentifier "\958")
, EGrouped
    [ ESymbol Open "(" , EIdentifier "\981" , ESymbol Close ")" ]
, EGrouped
    [ ESymbol Open "(" , EIdentifier "\981" , ESymbol Close ")" ]
, EIdentifier "\958"
]