name : _module_math_func #autoload local mod local -a funcs alts local -a modules=( example mathfunc system ) for mod in $modules; do funcs=( ${${${(f)"$(zmodload -Fl zsh/$mod 2>/dev/null)"}:#^+f:*}##+f:} ) alts+=( "module-math-functions.${mod}:math function from zsh/${mod}:compadd -S '(' $funcs" ) done _alternative $alts