commit https://github.com/vim/vim/commit/8e8df251bf2505e5decf258397c6069fbe5e2e01 Author: Bram Moolenaar <Bram@vim.org> Date: Wed May 25 21:23:21 2016 +0200 patch 7.4.1844 Problem: Using old function name in comment. More functions should start with test_. Solution: Rename function in comment. (Higashi Higashi) Rename disable_char_avail_for_testing() to test_disable_char_avail(). And alloc_fail() to test_alloc_fail().

--- a/src/testdir/runtest.vim
+++ b/src/testdir/runtest.vim
@@ -60,7 +60,7 @@ let $HOME = '/does/not/exist'
 
 let s:srcdir = expand('%:p:h:h')
 
-" Prepare for calling garbagecollect_for_testing().
+" Prepare for calling test_garbagecollect_now().
 let v:testing = 1
 
 " Support function: get the alloc ID by name.