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-rw-r--r--lisp/mail/rmail.el6
1 files changed, 3 insertions, 3 deletions
diff --git a/lisp/mail/rmail.el b/lisp/mail/rmail.el
index d2329452ce4..6e3056da407 100644
--- a/lisp/mail/rmail.el
+++ b/lisp/mail/rmail.el
@@ -1803,9 +1803,9 @@ is non-nil if the user has supplied the password interactively.
;; in case of multiple inboxes that need moving.
(concat ".newmail-"
(file-name-nondirectory
- (if (memq system-type '(windows-nt cygwin))
- ;; cannot have "po:" in file name
- (substring file 3)
+ (if (memq system-type '(windows-nt cygwin ms-dos))
+ ;; cannot have colons in file name
+ (replace-regexp-in-string ":" "-" file)
file)))
;; Use the directory of this rmail file
;; because it's a nuisance to use the homedir