dirname & basename not working on mingw

["Charles Day" <cedayiv@gmail.com>]

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Hello,

This is my first post to any guile list. I write because I am using
Guile 1.6.8 on mingw, and the dirname and basename procedures don't
work properly.  I tried a few variations:

(dirname "abc/def") returns "."
(dirname "abc\\def") returns "."
(dirname "c:/abc/def") returns "."
(dirname "c:\\abc\\def") returns "."
(dirname "/c/abc/def") returns "/"

So I had a look at the source code in libguile/filesys.c and I think
I've found the bug - and it's definitely of the "oops!" variety. I've
attached a patch that should fix the problem for 1.6.8.  If you agree,
please take a look at whether this affects other versions too.

Cheers,
Charles

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--- filesys.c.old	Thu Jun  9 15:42:54 2005
+++ filesys.c	Mon Jan 21 14:34:47 2008
@@ -1413,7 +1413,7 @@
   i = len - 1;
 #ifdef __MINGW32__
   while (i >= 0 && (s[i] == '/' || s[i] == '\\')) --i;
-  while (i >= 0 && (s[i] != '/' || s[i] != '\\')) --i;
+  while (i >= 0 && s[i] != '/' && s[i] != '\\') --i;
   while (i >= 0 && (s[i] == '/' || s[i] == '\\')) --i;
 #else
   while (i >= 0 && s[i] == '/') --i;
@@ -1470,7 +1470,7 @@
   if (j == -1)
     end = i;
 #ifdef __MINGW32__
-  while (i >= 0 && (f[i] != '/' || f[i] != '\\')) --i;
+  while (i >= 0 && f[i] != '/' && f[i] != '\\') --i;
 #else
   while (i >= 0 && f[i] != '/') --i;
 #endif /* ndef __MINGW32__ */