>From 8b7534d16b611fa4f55df59ce4e2521b5c525cc0 Mon Sep 17 00:00:00 2001
From: Rasmus <address@hidden>
Date: Sun, 22 May 2016 15:10:16 +0200
Subject: [PATCH] ox-html: Find preamble-spec case-insensitively

* ox-html.el (org-html--build-pre/postamble): Find the spec based on
  the language case-insensitively.

Note that the default org-html-preamble-format and
org-export-default-language are incompatible.
---
 lisp/ox-html.el | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lisp/ox-html.el b/lisp/ox-html.el
index a05fa2d..3d4e5da 100644
--- a/lisp/ox-html.el
+++ b/lisp/ox-html.el
@@ -1854,10 +1854,11 @@ communication channel."
 		    (format "<p class=\"validation\">%s</p>\n"
 			    validation-link))))
 		(t (format-spec
-		    (or (cadr (assoc
+		    (or (cadr (assoc-string
 			       (plist-get info :language)
 			       (eval (intern
-				      (format "org-html-%s-format" type)))))
+				      (format "org-html-%s-format" type)))
+			       t))
 			(cadr
 			 (assoc
 			  "en"
-- 
2.8.2