RFC: Issue about assumption of DOSish file-system for cygwin

[Kai Tietz]

Hello,

I noticed this issue while working on those directory-separator thing
for DOSish file-systems, and somehow this looks odd to me. For some
reason the filenames.h header assumes for cygwin DOSish file-system,
but in fact cygwin uses POSIXish file-system. I assume this definition
was caused by the times cygwin compiler had -mno-cygwin option, but
well I think we should correct this by following patch.
Dave, might it be that I am overlooking here something obvious, why
cygwin should assume DOSish filesystem?

Regards,
Kai

Index: filenames.h
===================================================================
--- filenames.h (revision 171281)
+++ filenames.h (working copy)
@@ -30,7 +30,8 @@
 extern "C" {
 #endif

-#if defined(__MSDOS__) || defined(_WIN32) || defined(__OS2__) ||
defined (__CYGWIN__)
+#if (defined(__MSDOS__) || defined(_WIN32) || defined(__OS2__)) \
+    && !defined (__CYGWIN__)
 #  ifndef HAVE_DOS_BASED_FILE_SYSTEM
 #    define HAVE_DOS_BASED_FILE_SYSTEM 1
 #  endif