prezto_config/modules/git/functions/_git-hub

#compdef git-hub
#autoload

#
# Completes git-hub.
#
# Authors:
#   Sorin Ionescu <sorin.ionescu@gmail.com>
#

local state remotes remote branches files ret=1

_arguments -C -s -S \
  '1::args:->remote' \
  '2::args:->branch' \
  '3::args:->file' && ret=0

case "$state" in
  (remote)
    remotes=($(
      git config -l \
        | grep 'remote\.[^.]*\.url' \
        | cut -d'.' -f2))
    _describe -t branch 'remotes' remotes && ret=0
  ;;
  (branch)
    remote="$words[(($CURRENT - 1))]"
    branches=($(
      git branch -r \
        | grep "${remote}/" \
        | sed \
          -e "/${remote}\/HEAD -> ${remote}/d" \
          -e "s/^[[:space:]]*${remote}\///g"
    ))
    _describe -t branch 'branches' branches && ret=0
  ;;
  (file)
    files=(${(0)"$(_call_program files git ls-files -z --exclude-standard 2>/dev/null)"})
    _wanted file expl 'file' _multi_parts - / files && ret=0
  ;;
esac

return $ret