Feature Request: Steam Locomotive easter egg

[ravibhoraskar]

Over the last year, I have come to accept that the sl CLI command now refers to the sapling binary, and the steam locomotive command is mostly relegated to being an old legend in unix history.

Still, it would be nice to be able to look at the old choo choo train sometime. Could we add it to sapling, as an homage to its command line ancestor? The sapling binary is some 50mb today, while 🚂 is hardly some 10s of kilobytes, so binary size shouldn't be a concern.

What should the subcommand be?

• My initial suggestion was sl sl, but that is sadly taken by the smart log
• sl ls is a tribute to the original sl command being a typo for ls
• sl steamlocomotive is nice and explicit
• sl 🚂 if we're okay with unicode