Use (unsigned char) cast in argument of pg_tolower(). Maybe it works on

Windows without that, but we shouldn't put bad examples where people might
copy them.  Also, reformat slightly to improve the odds that pgindent
won't go nuts on this.

src/port/path.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/port/path.c,v 1.74.2.1 2009/04/03 11:52:12 mha Exp $
+ *	  $PostgreSQL: pgsql/src/port/path.c,v 1.74.2.2 2009/04/03 23:27:22 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -420,20 +420,22 @@ get_progname(const char *argv0)
 
 
 /*
- * dir_strcmp: strcmp except any two DIR_SEP characters are considered equal
+ * dir_strcmp: strcmp except any two DIR_SEP characters are considered equal,
+ * and we honor filesystem case insensitivity if known
  */
 static int
 dir_strcmp(const char *s1, const char *s2)
 {
 	while (*s1 && *s2)
 	{
+		if (
 #ifndef WIN32
-		if (*s1 != *s2 &&
+			*s1 != *s2
 #else
 			/* On windows, paths are case-insensitive */
-		if (pg_tolower(*s1) != pg_tolower(*s2) &&
+			pg_tolower((unsigned char) *s1) != pg_tolower((unsigned char) *s2)
 #endif
-			!(IS_DIR_SEP(*s1) && IS_DIR_SEP(*s2)))
+			&& !(IS_DIR_SEP(*s1) && IS_DIR_SEP(*s2)))
 			return (int) *s1 - (int) *s2;
 		s1++, s2++;
 	}