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-rw-r--r--lisp/mail/rmail.el2
1 files changed, 1 insertions, 1 deletions
diff --git a/lisp/mail/rmail.el b/lisp/mail/rmail.el
index 12a58b293d0..9416d049028 100644
--- a/lisp/mail/rmail.el
+++ b/lisp/mail/rmail.el
@@ -4515,7 +4515,7 @@ encoded string (and the same mask) will decode the string."
(if (= curmask 0)
(setq curmask mask))
(setq charmask (% curmask 256))
- (setq curmask (lsh curmask -8))
+ (setq curmask (ash curmask -8))
(aset string-vector i (logxor charmask (aref string-vector i)))
(setq i (1+ i)))
(concat string-vector)))