2007-12-15  Eli Zaretskii  <eliz@gnu.org>

	* vpath.c (construct_vpath_list) [HAVE_DOS_PATHS]: Support VPATH
	values that use `:' in drive letters, when PATH_SEPARATOR_CHAR is
	also `:'.

--- vpath.c~0	2006-02-12 02:16:05.000000000 +0200
+++ vpath.c	2007-12-15 15:40:30.864428300 +0200
@@ -239,14 +239,24 @@ construct_vpath_list (char *pattern, cha
 
       /* Find the end of this entry.  */
       v = p;
-      while (*p != '\0' && *p != PATH_SEPARATOR_CHAR
+      while (*p != '\0'
+#if defined(HAVE_DOS_PATHS) && (PATH_SEPARATOR_CHAR == ':')
+	     /* Platforms whose PATH_SEPARATOR_CHAR is ':' and which
+		also define HAVE_DOS_PATHS would like us to recognize
+		colons after the drive letter in the likes of
+		"D:/foo/bar:C:/xyzzy".  */
+	     && (*p != PATH_SEPARATOR_CHAR
+		 || (p == v + 1 && (p[1] == '/' || p[1] == '\\')))
+#else
+	     && *p != PATH_SEPARATOR_CHAR
+#endif
 	     && !isblank ((unsigned char)*p))
 	++p;
 
       len = p - v;
       /* Make sure there's no trailing slash,
 	 but still allow "/" as a directory.  */
-#if defined(__MSDOS__) || defined(__EMX__)
+#if defined(__MSDOS__) || defined(__EMX__) || defined(HAVE_DOS_PATHS)
       /* We need also to leave alone a trailing slash in "d:/".  */
       if (len > 3 || (len > 1 && v[1] != ':'))
 #endif