- (filename (if (or user (not (url-file-host-is-local-p host)))
- (concat "/" (or user "anonymous") "@" site ":" file)
- (if (and (memq system-type '(ms-dos windows-nt))
- (string-match "^/[a-zA-Z]:/" file))
- (substring file 1)
- file)))
+ (filename (cond
+ ;; ftp: URL.
+ ((or user (not (url-file-host-is-local-p host)))
+ (concat "/" (or user "anonymous") "@" site ":" file))
+ ;; file: URL on Windows.
+ ((and (string-match "\\`/[a-zA-Z]:/" file)
+ (memq system-type '(ms-dos windows-nt)))
+ (substring file 1))
+ ;; file: URL with a file:/bar:/foo-like spec.
+ ((string-match "\\`/[^/]+:/" file)
+ (concat "/:" file))
+ (t
+ file)))