Сохранить в ~/.config/fish/functions/fish_prompt.fish:

function fish_prompt --description 'Write out the prompt'

set -l last_status $status

if not set -q __fish_git_prompt_show_informative_status

set -g __fish_git_prompt_show_informative_status 1

end

if not set -q __fish_git_prompt_hide_untrackedfiles

set -g __fish_git_prompt_hide_untrackedfiles 1

end

if not set -q __fish_git_prompt_color_branch

set -g __fish_git_prompt_color_branch magenta --bold

end

if not set -q __fish_git_prompt_showupstream

set -g __fish_git_prompt_showupstream "informative"

end

if not set -q __fish_git_prompt_char_upstream_ahead

set -g __fish_git_prompt_char_upstream_ahead "↑"

end

if not set -q __fish_git_prompt_char_upstream_behind

set -g __fish_git_prompt_char_upstream_behind "↓"

end

if not set -q __fish_git_prompt_char_upstream_prefix

set -g __fish_git_prompt_char_upstream_prefix ""

end

if not set -q __fish_git_prompt_char_stagedstate

set -g __fish_git_prompt_char_stagedstate "●"

end

if not set -q __fish_git_prompt_char_dirtystate

set -g __fish_git_prompt_char_dirtystate "✚"

end

if not set -q __fish_git_prompt_char_untrackedfiles

set -g __fish_git_prompt_char_untrackedfiles "…"

end

if not set -q __fish_git_prompt_char_conflictedstate

set -g __fish_git_prompt_char_conflictedstate "✖"

end

if not set -q __fish_git_prompt_char_cleanstate

set -g __fish_git_prompt_char_cleanstate "✔"

end

if not set -q __fish_git_prompt_color_dirtystate

set -g __fish_git_prompt_color_dirtystate blue

end

if not set -q __fish_git_prompt_color_stagedstate

set -g __fish_git_prompt_color_stagedstate yellow

end

if not set -q __fish_git_prompt_color_invalidstate

set -g __fish_git_prompt_color_invalidstate red

end

if not set -q __fish_git_prompt_color_untrackedfiles

set -g __fish_git_prompt_color_untrackedfiles $fish_color_normal

end

if not set -q __fish_git_prompt_color_cleanstate

set -g __fish_git_prompt_color_cleanstate green --bold

end

if not set -q __fish_prompt_normal

set -g __fish_prompt_normal (set_color normal)

end

set -l color_cwd

set -l prefix

set -l suffix

switch "$USER"

case root toor

if set -q fish_color_cwd_root

set color_cwd $fish_color_cwd_root

else

set color_cwd $fish_color_cwd

end

set suffix '#'

case '*'

set color_cwd $fish_color_cwd

set suffix '$'

end

# PWD

set_color $color_cwd

echo -n (prompt_pwd)

set_color normal

printf '%s ' (__fish_vcs_prompt)

if not test $last_status -eq 0

set_color $fish_color_error

end

echo -n "$suffix "

set_color normal

end