zmodule() {
  local -r zusage="
Usage: %B${0}%b <url> [%B-n%b|%B--name%b <module_name>] [options]

Repository options:
  %B-b%b|%B--branch%b <branch_name>  Use specified branch when installing and updating the module
  %B-t%b|%B--tag%b <tag_name>        Use specified tag when installing and updating the module
  %B-z%b|%B--frozen%b                Don't install or update the module

Startup options:
  %B-f%b|%B--fpath%b <path>              Add specified path to fpath
  %B-a%b|%B--autoload%b <function_name>  Autoload specified function
  %B-s%b|%B--source%b <file_path>        Source specified file
  %B-d%b|%B--disabled%b                  Don't use or uninstall the module
"
  if [[ ${${funcfiletrace[1]%:*}:t} != .zimrc ]]; then
    print -u2 -PR "%F{red}${0}: Must be called from %B<%= home %>/.zimrc%b%f"$'\n'${zusage}
    return 1
  fi
  if (( ! # )); then
    print -u2 -PR "%F{red}<%= error %>${funcfiletrace[1]}: Missing zmodule url%f"
    _zfailed=1
    return 1
  fi
  setopt LOCAL_OPTIONS CASE_GLOB EXTENDED_GLOB
  local zmodule=${1:t} zurl=${1}
  local ztype=branch zrev=master
  local -i zdisabled=0 zfrozen=0
  local -a zfpaths zfunctions zscripts
  local zarg
  if [[ ${zurl} =~ ^[^:/]+: ]]; then
    zmodule=${zmodule%.git}
  elif [[ ${zurl} != /* ]]; then
    # Count number of slashes
    case ${#zurl//[^\/]/} in
      0) zurl="https://github.com/zimfw/${zurl}.git" ;;
      1) zurl="https://github.com/${zurl}.git" ;;
    esac
  fi
  shift
  if [[ ${1} == (-n|--name) ]]; then
    if (( # < 2 )); then
      print -u2 -PR "%F{red}<%= error %>${funcfiletrace[1]}:%B${zmodule}:%b Missing argument for zmodule option ${1}%f"
      _zfailed=1
      return 1
    fi
    shift
    zmodule=${1}
    shift
  fi
  local -r zdir=${ZIM_HOME}/modules/${zmodule}
  while (( # > 0 )); do
    case ${1} in
      -b|--branch|-t|--tag|-f|--fpath|-a|--autoload|-s|--source)
        if (( # < 2 )); then
          print -u2 -PR "%F{red}<%= error %>${funcfiletrace[1]}:%B${zmodule}:%b Missing argument for zmodule option ${1}%f"
          _zfailed=1
          return 1
        fi
        ;;
    esac
    case ${1} in
      -b|--branch)
        shift
        ztype=branch
        zrev=${1}
        ;;
      -t|--tag)
        shift
        ztype=tag
        zrev=${1}
        ;;
      -z|--frozen) zfrozen=1 ;;
      -f|--fpath)
        shift
        zarg=${1}
        [[ ${zarg} != /* ]] && zarg=${zdir}/${zarg}
        zfpaths+=(${zarg})
        ;;
      -a|--autoload)
        shift
        zfunctions+=(${1})
        ;;
      -s|--source)
        shift
        zarg=${1}
        [[ ${zarg} != /* ]] && zarg=${zdir}/${zarg}
        zscripts+=(${zarg})
        ;;
      -d|--disabled) zdisabled=1 ;;
      *)
        print -u2 -PR "%F{red}<%= error %>${funcfiletrace[1]}:%B${zmodule}:%b Unknown zmodule option ${1}%f"
        _zfailed=1
        return 1
        ;;
    esac
    shift
  done
  if (( _zprepare_xargs )); then
    if (( ! zfrozen )); then
      _zmodules_xargs+=${zmodule}$'\0'${zdir}$'\0'${zurl}$'\0'${ztype}$'\0'${zrev}$'\0'${_zquiet}$'\0'
    fi
  else
    if (( zdisabled )); then
      _zdisableds+=(${zmodule})
    else
      if [[ ! -d ${zdir} ]]; then
        print -u2 -PR "%F{red}<%= error %>${funcfiletrace[1]}:%B${zmodule}:%b Not installed%f"
        _zfailed=1
        return 1
      fi
      (( ! ${#zfpaths} )) && zfpaths+=(${zdir}/functions(NF))
      if (( ! ${#zfunctions} )); then
        # _* functions are autoloaded by compinit
        # prompt_*_setup functions are autoloaded by promptinit
        zfunctions+=(${^zfpaths}/^(*~|*.zwc(|.old)|_*|prompt_*_setup)(N-.:t))
      fi
      if (( ! ${#zscripts} )); then
        zscripts+=(${zdir}/(init.zsh|${zmodule:t}.(zsh|plugin.zsh|zsh-theme|sh))(NOL[1]))
      fi
      _zfpaths+=(${zfpaths})
      _zfunctions+=(${zfunctions})
      _zscripts+=(${zscripts})
      _zmodules+=(${zmodule})
    fi
  fi
}