function collapse_pwd {
    echo $(pwd | sed -e "s,^$HOME,~,")
}
function prompt_char {
    git branch >/dev/null 2>/dev/null && echo "%{$fg[green]%}±%{$reset_color%}" && return
    echo "%{$fg[red]%}≈%{$reset_color%}"
}

PROMPT='%{$fg[magenta]%}%n%{$reset_color%} in %{$fg_bold[green]%}$(collapse_pwd)%{$reset_color%}$(git_prompt_info)
$(prompt_char) '

ZSH_THEME_GIT_PROMPT_PREFIX=" on %{$fg[magenta]%}"
ZSH_THEME_GIT_PROMPT_SUFFIX="%{$reset_color%}"
ZSH_THEME_GIT_PROMPT_DIRTY="%{$bg[white]%}%{$fg[red]%}!%{$reset_color%}"
ZSH_THEME_GIT_PROMPT_CLEAN="%{$bg[white]%}%{$fg[red]%}√%{$reset_color%}"