feat: container indicator for fish shell

[RealVishy]

Copies over the fish function from bazzite.

Afaik it's the right folder to be put in but i'll fix it if i'm wrong.

#1491

[castrojo]

I don't use fish so I can't test this, anyone else out there using fish?

[RealVishy]

apparently starship makes it's own function with the same name.

# Defined in /tmp/.psub.Wj8KHNUFnO @ line 1
function fish_prompt
    switch "$fish_key_bindings"
        case fish_hybrid_key_bindings fish_vi_key_bindings
            set STARSHIP_KEYMAP "$fish_bind_mode"
        case '*'
            set STARSHIP_KEYMAP insert
    end
    set STARSHIP_CMD_PIPESTATUS $pipestatus
    set STARSHIP_CMD_STATUS $status
    # Account for changes in variable name between v2.7 and v3.0
    set STARSHIP_DURATION "$CMD_DURATION$cmd_duration"
    set STARSHIP_JOBS (count (jobs -p))
    if test "$TRANSIENT" = "1"
        # Clear from cursor to end of screen as `commandline -f repaint` does not do this
        # See https://github.com/fish-shell/fish-shell/issues/8418
        printf \e\[0J
        if type -q starship_transient_prompt_func
            starship_transient_prompt_func
        else
            printf "\e[1;32m❯\e[0m "
        end
    else
        /usr/bin/starship prompt --terminal-width="$COLUMNS" --status=$STARSHIP_CMD_STATUS --pipestatus="$STARSHIP_CMD_PIPESTATUS" --keymap=$STARSHIP_KEYMAP --cmd-duration=$STARSHIP_DURATION --jobs=$STARSHIP_JOBS
    end
end

[castrojo]

It was poor form on my part to merge without giving you a heads up, so whatever changes you need to make it good I'll be standing by, appreciate your help!

[RealVishy]

AFAIK just renaming the function should fix it but I'll read up on the fish documentation. No worries about it being merged early, I'll try to get it fixed soon!

[RealVishy]

One of the reasons it wasn't working for me was that it needs your distrobox to be using the same home dir. I was using a custom home dir, which is why it wasn't loading in the fish function.