texmath-0.9.4: tests/writers/complex_number.eqn
c = {{{a from \[u23df]} from {roman "real"} + {{b roman {i}} from \[u23df]} from {roman "imaginary"}} to \[u23de]} to {roman "complex number"}
c = {{{a from \[u23df]} from {roman "real"} + {{b roman {i}} from \[u23df]} from {roman "imaginary"}} to \[u23de]} to {roman "complex number"}