texmath-0.13.1.2: test/roundtrip/21.native
[ ESub (EIdentifier "e") (ENumber "1") , ESymbol Rel "=" , ESuper (EIdentifier "b") (ENumber "2") , ESymbol Bin "+" , ESuper (EIdentifier "c") (ENumber "22") ]
[ ESub (EIdentifier "e") (ENumber "1") , ESymbol Rel "=" , ESuper (EIdentifier "b") (ENumber "2") , ESymbol Bin "+" , ESuper (EIdentifier "c") (ENumber "22") ]