Windows paths with make 3.81

[Alexander V. Trushkin]

Dear Sirs,

Using the following version of 'make':

GNU Make 3.81
Copyright (C) 2006  Free Software Foundation, Inc.
This program built for i386-pc-mingw32

I've found the following undocumented peculiarity of handling
Windows-type directory tree names.

In spite of that the upper directory in Windows contains files of the
kind ..\*.x, the construction of the type:

    $(wildcard ..\*.x)

returns an empty list as well as

     a : ..\*.x

does not find any prerequisite, though

     a : ..\b

does work, and everything works when
'\' is replaced by '/'.

Maybe it will be interesting for you in order to make the behaviour
uniform both in Unix and Windows versions.

Sincerely,

A. Trushkin