bug#30048: 27.0.50; bibtex-reference-keys is in reverse order

["Basil L. Contovounesios" <contovob@tcd.ie>]

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From 109ff5794e29c96b77647837ec3add558143d745 Mon Sep 17 00:00:00 2001
From: "Basil L. Contovounesios" <contovob@tcd.ie>
Date: Tue, 9 Jan 2018 17:20:55 +0000
Subject: [PATCH] Keep BibTeX keys in natural order (bug#30048)

* lisp/textmodes/bibtex.el (bibtex-parse-keys):
Reverse bibtex-reference-keys.
---
 lisp/textmodes/bibtex.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisp/textmodes/bibtex.el b/lisp/textmodes/bibtex.el
index a30e146892..f6cc98241c 100644
--- a/lisp/textmodes/bibtex.el
+++ b/lisp/textmodes/bibtex.el
@@ -2932,7 +2932,7 @@ bibtex-parse-keys
               (if verbose
                   (bibtex-progress-message 'done))
               ;; successful operation --> return `bibtex-reference-keys'
-              (setq bibtex-reference-keys ref-keys)))))))
+              (setq bibtex-reference-keys (nreverse ref-keys))))))))
 
 (defun bibtex-parse-strings (&optional add abortable)
   "Set `bibtex-strings' to the string definitions in the whole buffer.
-- 
2.15.1


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Kindly find attached the promised patch.

Thanks,

-- 
Basil