> if you really can't do what you're trying to do in Fish, firing up sh/csh/ksh/bash/python/xonsh costs virtually no effort. But of course having to recall how

> if you really can't do what you're trying to do in Fish, firing up sh/csh/ksh/bash/python/xonsh costs virtually no effort. But of course having to recall how to do something in a POSIX-compatible shell can cost if you've been using a POSIX-incompatible shell for years. Memory and experience do fade over time.