[KingMob]

I like this idea, and I used fish for years.

But, it also increases the mental workload a bit. For one, you now use two similar-but-not-quite tools, and have to keep them straight to make sure you always use the right syntax.

What really did me in was, most of the snippets, docs, etc on the internet were POSIX-compatible, so I either had to translate to fish (which was less bash-compatible at the time), make a temp script, or drop into bash. All of which were constantly-annoying speed bumps.

One of the things I like about Oils (and why I'm contributing to it), is the bash-compatible part and the future-directions part are the same executable, so toggling the behavior is very fast.