#715's quoting has caused my appveyor builds to start failing with 25.1.4, due to some extra quoting.

With setuptools 25.1.3, builds succeed, and with 25.1.4 they fail.

The key difference:

on 25.1.3, the link command had args like:

"/LIBPATH:C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\LIB" 

on 25.1.4, they look like:

"/LIBPATH:"C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\LIB"" 

(note the extra quotes).

These are CPython 3.5 x86 builds on appveyor; I don't know what other versions are affected.