Estou tentando usar o rvm dentro do fish shell
rvm gemset use rails3
Estou recebendo a seguinte mensagem de erro do fish
RVM is not a function, selecting rubies with 'rvm use ...' will not work.
You need to change your terminal emulator preferences to allow login shell.
Sometimes it is required to use '/bin/bash --login' as the command.
Please visit https://rvm.io/integration/gnome-terminal/ for an example.
O mesmo comando funciona bem no Bash.