+ ;; MS-DOS shells don't return the exit code of their children.
+ ;; Look at the size of the error message file instead, but
+ ;; don't punish those MS-DOS users who have a shell that does
+ ;; return an error code.
+ (or (and (or (not (boundp 'msdos-shells))
+ (not (member (file-name-nondirectory shell-file-name)
+ msdos-shells)))
+ (eq exit-status 0))
+ (zerop (nth 7 (file-attributes (expand-file-name tempname))))