commit https://github.com/vim/vim/commit/25e4fcde767084d1a79e0926bc301c92987c0cce Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jan 9 14:57:47 2016 +0100 patch 7.4.1065 Problem: Cannot use the "dll" options on MS-Windows. Solution: Support the options on all platforms. Use the built-in name as the default, so that it's clear what Vim is looking for.

Test if fnameescape is correct for special chars like !

STARTTEST
:so small.vim
:%d
:let fname = 'Xspa ce'
:try | exe "w! " . fnameescape(fname) | put='Space' | endtry 
:let fname = 'Xemark!'
:try | exe "w! " . fnameescape(fname) | put='ExclamationMark' | endtry
:w! test.out
:qa!
ENDTEST