Tests for autoload. vim: set ft=vim ts=8 : STARTTEST :so small.vim :set runtimepath+=./sautest :" Test to not autoload when assigning. It causes internal error. :try : let Test104#numvar = function('tr') : $put ='OK: ' . string(Test104#numvar) :catch : $put ='FAIL: ' . v:exception :endtry :/^Results/,$wq! test.out ENDTEST Results of test104: