ref: 85cdc11b3ad306110ae43fe5b35c04c37cd776fd dir: /parse/cstr.def/
Tc(Tcnum) /* arith ops */ Tc(Tcint) /* bitwise ops */ Tc(Tctest) /* if condition */ Tc(Tcidx) /* indexable */ Tc(Tcslice) /* sliceable */ Tc(Ncstr)