latex writer style sheets

With current docutils on Windows:
   --stylesheet=C:/Users/aisaac/svn/aisaac/mydocs/372/372slides
is producing
   %%% User specified packages and stylesheets
   \usepackage{C:\Users\aisaac\svn\aisaac\mydocs\372\372slides}

The forward slashes need to be retained, of course.

This might (?) be related to this in the history:

docutils/utils/__init__.py

     find_file_in_dirs() now returns a POSIX path also on Windows; get_stylesheet_list() no longer converts "" to "/".

If so, that is a breaking change.

Alan Isaac