1 files changed, 10 insertions, 1 deletions

diff --git a/lisp/language/cyrillic.el b/lisp/language/cyrillic.el
index ad3ab940492..19ff671834b 100644
--- a/lisp/language/cyrillic.el
+++ b/lisp/language/cyrillic.el
@@ -465,9 +465,17 @@ Support for Russian using koi8-r and the russian-computer input method.")
 
 (define-coding-system-alias 'cp1251 'windows-1251)
 
+(let ((elt `("microsoft-cp1251" windows-1251 1
+             ,(get 'encode-windows-1251 'translation-table)))
+      (slot (assoc "microsoft-cp1251" ctext-non-standard-encodings-alist)))
+  (if slot
+      (setcdr slot (cdr elt))
+    (push elt ctext-non-standard-encodings-alist)))
+
 (set-language-info-alist
  "Bulgarian" `((coding-system windows-1251)
-                  (coding-priority windows-1251)
+               (coding-priority windows-1251)
+               (ctext-non-standard-encodings "microsoft-cp1251")
                (nonascii-translation
                 . ,(get 'decode-windows-1251 'translation-table))
                (input-method . "bulgarian-bds")
@@ -479,6 +487,7 @@ Support for Russian using koi8-r and the russian-computer input method.")
 (set-language-info-alist
  "Belarusian" `((coding-system windows-1251)
                 (coding-priority windows-1251)
+                (ctext-non-standard-encodings "microsoft-cp1251")
                 (nonascii-translation
                  . ,(get 'decode-windows-1251 'translation-table))
                 (input-method . "belarusian")