ref: 8d0d2ec80f06f3d7d8ba44313cd08eaef5d9b5d1 dir: /sys/src/cmd/python/Doc/tools/fix_libaux.sed/
#! /bin/sed -f s/{\\tt \\hackscore {}\\hackscore {}/\\sectcode{__/ s/\\hackscore {}\\hackscore {}/__/