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="%{$fg[green]%}!"
 ZSH_THEME_GIT_PROMPT_CLEAN=""