texmath-0.12.2: tests/writers/08.eqn
left | z to \[u203E] right | = left | z right | , left | {left ( z to \[u203E] right )} sup n right | = {left | z right |} sup n , "arg" left ( z sup n right ) = n "arg" left ( z right )
left | z to \[u203E] right | = left | z right | , left | {left ( z to \[u203E] right )} sup n right | = {left | z right |} sup n , "arg" left ( z sup n right ) = n "arg" left ( z right )