Yet more windows quoting issues
The fix to issue
#53 actually breaks quoting on windows given some values of
'shell*' in vim. Vim already provides methods of quoting the input string (shellxquote,shellcmdflag, etc.) -- e.g., I use shellcmdflags=/s /c and shellxquote=" as recommended by https://groups.google.com/d/msg/vim_dev/PRzGywwNJ7M/6secQWsMxqsJ . You shouldn't be second guessing these settings by adding in your own quotes.