(defun untranslated-canonical-name (filename)
"Return FILENAME in a canonicalized form for use with the functions
dealing with untranslated filesystems."
- (if (memq system-type '(ms-dos windows-nt))
+ (if (memq system-type '(ms-dos windows-nt cygwin))
;; The canonical form for DOS/W32 is with A-Z downcased and all
;; directory separators changed to directory-sep-char.
(let ((name nil))