prezto/modules/git/functions/_git-hub-browse

#compdef git-hub
#autoload

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

local state remotes remote branches_or_tags branches tags files ret=1

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

case "$state" in
  (remote)
    remotes=($(
      git config --local --get-regexp 'remote.*.url' \
        | awk 'BEGIN {FS="."} ; {print $2}'
    ))
    _describe -t branch 'remotes' remotes && ret=0
  ;;
  (branch-or-tag)
    remote="$words[(($CURRENT - 1))]"

    branches_or_tags=($(
      git ls-remote --heads --tags "$remote" | awk '{print $2}'
    ))

    branches=(HEAD ${${(M)branches_or_tags[@]##refs/heads/?##}##refs/heads/})
    tags=(${${(M)branches_or_tags[@]##refs/tags/?##}##refs/tags/})

    _describe -t branch 'branches' branches && ret=0
    _describe -t tag 'tags' tags && 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