You can copy and paste in bash and zsh with emacs keybindings (by default). I will sometimes start typing git commit -m "something...", then hit ctrl-a ctrl-k,

You can copy and paste in bash and zsh with emacs keybindings (by default). I will sometimes start typing git commit -m "something...", then hit ctrl-a ctrl-k, then stage another file, and then later ctrl-y to finish the commit. But ctrl-q basically does that same thing, in a nicer way. I don't know how to get bash/zsh to integrate with the system clipboard.