My config to fish shell

config.fish

function _git_branch_name
  echo (git symbolic-ref HEAD ^/dev/null | sed -e 's|^refs/heads/||')
end
 
function fish_prompt
   set_color green --bold
   printf '%s [at] ' (whoami) 

   set_color blue
   printf '%s ' (hostname)
 
   #set_color white
   #printf ' in '
 
   set_color green
   printf (prompt_pwd)
 
   if [ (_git_branch_name) ]
      set_color blue
      echo -n ' ['(_git_branch_name)']'
   end 
 
   set_color white
   printf ' > '
 
end

# bins in ruby gems
set PATH ~/.gem/ruby/gems/*/bin $PATH
# bins in composer 
set PATH ~/.composer/vendor/bin $PATH

complete -p sudo

fuck.fish

function fuck
  eval command sudo $history[1] $argv; 
end