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

Add %Bzmodule%b calls to your %B${ZDOTDIR:-${HOME}}/.zimrc%b file to define the modules to be initialized.
The modules are initialized in the same order they are defined.

  <url>                      Module absolute path or repository URL. The following URL formats
                             are equivalent: %Bname%b, %Bzimfw/name%b, %Bhttps://github.com/zimfw/name.git%b.
  %B-n%b|%B--name%b <module_name>    Set a custom module name. Default: the last component in the <url>.
                             Use slashes inside the name to organize the module into subdirecto-
                             ries.

Repository options:
  %B-b%b|%B--branch%b <branch_name>  Use specified branch when installing and updating the module.
                             Overrides the tag option. Default: the repository's default branch.
  %B-t%b|%B--tag%b <tag_name>        Use specified tag when installing and updating the module.
                             Overrides the branch option.
  %B-u%b|%B--use%b <%%Bgit%b|%Bdegit%b>       Install and update the module using the defined tool. Default is
                             defined by %Bzstyle ':zim:zmodule' use '%b<%%Bgit%b|%Bdegit%b>%B'%b, or %Bgit%b if none
                             is provided.
                             %Bgit%b requires git itself. Local changes are preserved during updates.
                             %Bdegit%b requires curl or wget, and currently only works with GitHub
                             URLs. Modules install faster and take less disk space. Local changes
                             are lost during updates. Git submodules are not supported.
  %B-z%b|%B--frozen%b                Don't install or update the module.

Initialization options:
  %B-f%b|%B--fpath%b <path>          Add specified path to fpath. The path is relative to the module
                             root directory. Default: %Bfunctions%b, if the subdirectory exists.
  %B-a%b|%B--autoload%b <func_name>  Autoload specified function. Default: all valid names inside the
                             module's specified fpath paths.
  %B-s%b|%B--source%b <file_path>    Source specified file. The file path is relative to the module root
                             directory. Default: %Binit.zsh%b, if the %Bfunctions%b subdirectory also
                             exists, or the file with largest size matching
                             %B{init.zsh,module_name.{zsh,plugin.zsh,zsh-theme,sh}}%b, if any exist.
  %B-c%b|%B--cmd%b <command>         Execute specified command. Occurrences of the %B{}%b placeholder in the
                             command are substituted by the module root directory path.
                             I.e., %B-s 'script.zsh'%b and %B-c 'source {}/script.zsh'%b are equivalent.
  %B-d%b|%B--disabled%b              Don't initialize 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\n'${zusage}
    return 2
  fi
  if (( ! # )); then
    print -u2 -PR "%F{red}<%= error %>${funcfiletrace[1]}: Missing zmodule url%f"$'\n\n'${zusage}
    _zfailed=1
    return 2
  fi
  setopt LOCAL_OPTIONS CASE_GLOB EXTENDED_GLOB
  local zurl=${1} zmodule=${1:t} ztool zdir ztype zrev zarg
  local -i zdisabled=0 zfrozen=0
  local -a zfpaths zfunctions zcmds
  zstyle -s ':zim:zmodule' use 'ztool' || ztool=git
  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 ${1}%f"$'\n\n'${zusage}
      _zfailed=1
      return 2
    fi
    shift
    zmodule=${${1%%/##}##/##}
    shift
  fi
  if [[ ${zurl} == /* ]]; then
    zdir=${zurl%%/##}
    zurl=''
  else
    zdir=${ZIM_HOME}/modules/${zmodule}
  fi
  while (( # > 0 )); do
    case ${1} in
      -b|--branch|-t|--tag|-u|--use|-f|--fpath|-a|--autoload|-s|--source|-c|--cmd)
        if (( # < 2 )); then
          print -u2 -PR "%F{red}<%= error %>${funcfiletrace[1]}:%B${zmodule}:%b Missing argument for zmodule option ${1}%f"$'\n\n'${zusage}
          _zfailed=1
          return 2
        fi
        ;;
    esac
    case ${1} in
      -b|--branch|-t|--tag|-u|--use)
        if [[ -z ${zurl} ]] _zimfw_print -u2 -PR "%F{yellow}<%= warn %>${funcfiletrace[1]}:%B${zmodule}:%b The zmodule option ${1} has no effect for external modules%f"
        ;;
    esac
    case ${1} in
      -b|--branch)
        shift
        ztype=branch
        zrev=${1}
        ;;
      -t|--tag)
        shift
        ztype=tag
        zrev=${1}
        ;;
      -u|--use)
        shift
        ztool=${1}
        ;;
      -z|--frozen) zfrozen=1 ;;
      -f|--fpath)
        shift
        zarg=${1}
        if [[ ${zarg} != /* ]] zarg=${zdir}/${zarg}
        zfpaths+=(${zarg})
        ;;
      -a|--autoload)
        shift
        zfunctions+=(${1})
        ;;
      -s|--source)
        shift
        zarg=${1}
        if [[ ${zarg} != /* ]] zarg=${zdir}/${zarg}
        zcmds+=("source ${zarg:A}")
        ;;
      -c|--cmd)
        shift
        zcmds+=(${1//{}/${zdir:A}})
        ;;
      -d|--disabled) zdisabled=1 ;;
      *)
        print -u2 -PR "%F{red}<%= error %>${funcfiletrace[1]}:%B${zmodule}:%b Unknown zmodule option ${1}%f"$'\n\n'${zusage}
        _zfailed=1
        return 2
        ;;
    esac
    shift
  done
  if (( _zflags & 1 )); then
    _zmodules_zargs+=("${ztool}" "${_zargs_action}" "${zmodule}" "${zdir}" "${zurl}" "${ztype}" "${zrev}" "${zfrozen}" "${zdisabled}")
  fi
  if (( _zflags & 2 )); then
    if (( zdisabled )); then
      _zdisabled_dirs+=(${zdir})
    else
      if [[ ! -e ${zdir} ]]; then
        if [[ -z ${zurl} ]]; then
          print -u2 -PR "%F{red}<%= error %>${funcfiletrace[1]}:%B${zmodule}: ${zdir}%b not found%f"
        else
          print -u2 -PR "%F{red}<%= error %>${funcfiletrace[1]}:%B${zmodule}:%b Not installed. Run %Bzimfw install%b to install.%f"
        fi
        _zfailed=1
        return 1
      fi
      if (( ! ${#zfpaths} && ! ${#zcmds} )); then
        zfpaths=(${zdir}/functions(NF))
        local -ra prezto_scripts=(${zdir}/init.zsh(N))
        if (( ${#zfpaths} && ${#prezto_scripts} )); then
          # this follows the prezto module format, no need to check for other scripts
          zcmds=("source ${^prezto_scripts[@]:A}")
        else
          # get script with largest size (descending `O`rder by `L`ength, and return only `[1]` first)
          local -ra zscripts=(${zdir}/(init.zsh|${zmodule:t}.(zsh|plugin.zsh|zsh-theme|sh))(NOL[1]))
          zcmds=("source ${^zscripts[@]:A}")
        fi
      fi
      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 (( ! ${#zfpaths} && ! ${#zfunctions} && ! ${#zcmds} )); then
        _zimfw_print -u2 -PR "%F{yellow}<%= warn %>${funcfiletrace[1]}:%B${zmodule}:%b Nothing found to be initialized. Customize the module name or initialization with %Bzmodule%b options.%f"$'\n\n'${zusage}
      fi
      _zdirs+=(${zdir})
      # Prefix is added to all _zfpaths, _zfunctions and _zcmds to distinguish the originating modules
      local -r zpre=${zmodule}$'\0'
      _zfpaths+=(${zpre}${^zfpaths})
      _zfunctions+=(${zpre}${^zfunctions})
      _zcmds+=(${zpre}${^zcmds})
    fi
  fi
}