echo: prints version when input is "--ver" different from GNU echo

[SaHHiiLL]

GNU echo

$ /bin/echo --ver
--ver

coreutills

$ cargo run --features unix -- echo --ver
echo 0.0.24

other coreutils have the same behavior, but they match the output of their counterparts, tested ls, touch and sleep

[tertsdiepraam]

Oh that's funny 😄 I'll try to fix this in my new argument parser too. For the clap parser, I think this is just a matter of removing infer_long_args. Let me give that a shot.