What's the easiest way to prepend the current time to the fish prompt?

Question

I'd like to see the current time in my fish prompt so that I can always see for example when I started the last command. I don't want to install extensions.

Answer 1

In ~/.config/fish/functions there is a file named fish_prompt.fish. Replace the line

    echo -n (prompt_pwd)

with

    echo -n (date +%H:%M) (prompt_pwd)

Result: