in ~/.config/fish/config.fish and ~/.config/fish/functions/fish_prompt.fish

config.fish

set PATH "$HOME"/bin /opt/local/Library/Frameworks/Python.framework/Versions/Current/bin/\
 /opt/local/bin /opt/local/sbin $PATH
set CDPATH . "$HOME" $CDPATH

set fish_greeting ""

function fish_user_key_bindings
    bind \e\[1\;9A 'history-token-search-backward'
end

alias v=vim
alias vv='vim -u NONE'
alias pl='ipython --pylab'
alias top=htop
alias cloc='cloc --exclude-dir=.git'
alias scheme='rlwrap -r -c -b" " -f "$HOME"/.scheme_completion.txt scheme'
alias gb='git branch'
alias gco='git checkout'
alias gca='git commit --all'
alias pcat='pygmentize -f terminal256 -O style=native -g'
alias less='less -r'

# see https://github.com/fish-shell/fish-shell/issues/393
function make_completion --argument alias command
    complete -c $alias -xa "(
    set -l cmd (commandline -pc | sed -e 's/^ *\S\+ *//' );
    complete -C\"$command \$cmd\";
    )"
end
make_completion gb 'git branch'
make_completion gco 'git checkout'
make_completion gca 'git commit --all'
make_completion pcat 'cat'

set PYTHONPATH "~/Library/Python:$PYTHONPATH"

set __fish_git_prompt_showdirtystate 'yes'
set __fish_git_prompt_color_branch magenta
set __fish_git_prompt_char_dirtystate '!'
set __fish_git_prompt_char_stagedstate '→'
set __fish_git_prompt_char_stashstate '↩'
set __fish_git_prompt_char_upstream_ahead '↑'
set __fish_git_prompt_char_upstream_behind '↓'

function j
    cd (command autojump $argv)
end

gistfile1.txt

function fish_prompt
   set_color blue
   printf '%s' (whoami)
   set_color normal

   printf ' at '
   set_color yellow
   printf '%s' (hostname|cut -d . -f 1)
   set_color normal

   printf ' in '
   set_color $fish_color_cwd
   printf '%s' (prompt_pwd)
   set_color normal

   __fish_git_prompt " on %s"

   echo

   printf '○ '
   set_color normal

   autojump -a $PWD > /dev/null &
end