fish_prompt.fish

function fish_prompt
	set sepcol (set_color -o blue)
	set hstcol (set_color -o yellow)
	set pthcol (set_color cyan)
	set gitcol (set_color normal)
	if test $USER = "root"
		set usrcol (set_color red)
	else
		set usrcol (set_color -o green)
	end
	set gitbranch (git symbolic-ref HEAD ^/dev/null | sed -e 's|^refs/heads/||')
	set gitprompt
	if test "$gitbranch" != ""
		set gitstcount (git status -s --ignore-submodules=dirty --untracked-files=no ^/dev/null | wc -l)
		if test $gitstcount -gt 0
			set gitprompt (printf '%s[%s%s:%d%s]' $sepcol $gitcol $gitbranch $gitstcount $sepcol)
		else
			set gitprompt (printf '%s[%s%s%s]' $sepcol $gitcol $gitbranch $sepcol)
		end
	end
	printf '%s%s%s@%s%s%s:%s%s%s%s▶%s ' $usrcol (whoami) $sepcol $hstcol (hostname|cut -d . -f 1) $sepcol $pthcol (prompt_pwd) $gitprompt $sepcol (set_color normal)
end

in ~/.config/fish/functions/

^/dev/null becomes 2>/dev/null for fish >= 3.3.0