Navegando na web, encontrei esta função fish shell para mostrar o branch atual do git no prompt do fish.
Adicione a seguinte função em seu arquivo ~ / .config / fish / config.fish
function fish_prompt --description 'Write out the prompt'
# Just calculate these once, to save a few cycles when displaying the prompt
if not set -q __fish_prompt_hostname
set -g __fish_prompt_hostname (hostname|cut -d . -f 1)
end
if not set -q __fish_prompt_normal
set -g __fish_prompt_normal (set_color normal)
end
if not set -q __git_cb
set __git_cb ":"(set_color brown)(git branch ^/dev/null | grep * | sed 's/* //')(set_color normal)""
end
switch $USER
case root
if not set -q __fish_prompt_cwd
if set -q fish_color_cwd_root
set -g __fish_prompt_cwd (set_color $fish_color_cwd_root)
else
set -g __fish_prompt_cwd (set_color $fish_color_cwd)
end
end
printf '%s@%s:%s%s%s%s# ' $USER $__fish_prompt_hostname "$__fish_prompt_cwd" (prompt_pwd) "$__fish_prompt_normal" $__git_cb
case '*'
if not set -q __fish_prompt_cwd
set -g __fish_prompt_cwd (set_color $fish_color_cwd)
end
printf '%s@%s:%s%s%s%s$ ' $USER $__fish_prompt_hostname "$__fish_prompt_cwd" (prompt_pwd) "$__fish_prompt_normal" $__git_cb
end
end
Fonte: http://notsnippets.tumblr.com/post/894091013/fish-function-of-the-day-prompt-with-git-branch