# zshrc/85_git_prompt
#
# Make git information available to the prompt
#
# Copyright © 1994–2008 martin f. krafft <madduck@madduck.net>
# Released under the terms of the Artistic Licence 2.0
#
# Source repository: http://git.madduck.net/v/etc/zsh.git
#
# Shamelessly adapted from http://www.jukie.net/~bart/conf/zsh.d/S55_git
#

_get_git_cur_branch() {
  git branch --no-color | sed -rne 's,^\* ,,p'
}

_is_git_repo() {
  [ "$(git rev-parse --is-inside-work-tree)" = true ]
}

_set_git_psvar() {
  if _is_git_repo; then
    psvar[1]="$(_get_git_cur_branch)"
  else
    [ -n "$psvar[1]" ] && unset "psvar[1]"
  fi
}

update_git_vars_if_git_ran() {
  # if the last command included the word git, the branch may have changed.
  # checkout should be alright, but you never know...
  case "$(history $(($HISTCMD - 1)))" in
    *git*) _set_git_psvar;;
  esac
}
precmd_functions+=update_git_vars_if_git_ran

update_git_vars() {
  _set_git_psvar
}
chpwd_functions+=update_git_vars

# call it once
update_git_vars

# vim:ft=zsh