[O] Bug with label names in beamer export

[Suvayu Ali]

Hi,

I encountered a strange problem today, exporting to beamer didn't
produce any pages eventhough it compiled just fine!  It turns out it's
how Org exported the labels.  They should be wrapped in {..}.  See this
TeX.SX question for more: http://tex.stackexchange.com/q/250640/4416

The attached patch should fix the issue.

Cheers,

-- 
Suvayu

Open source is the future. It sets us free.

>From e82cd7bf86dc01d1038a442fd66ba8b97ec7a23e Mon Sep 17 00:00:00 2001
From: Suvayu Ali <fatkasuvayu+li...@gmail.com>
Date: Tue, 16 Jun 2015 21:04:21 +0200
Subject: [PATCH] ox-beamer: Wrap labels in braces in beamer export

* lisp/ox-beamer.el (org-beamer--get-label): wrap labels in {..}

The `:' in the label name causes an argument parsing problem, for more
see <http://tex.stackexchange.com/q/250640/4416>.
---
 lisp/ox-beamer.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisp/ox-beamer.el b/lisp/ox-beamer.el
index dafadb3..3119bd4 100644
--- a/lisp/ox-beamer.el
+++ b/lisp/ox-beamer.el
@@ -337,7 +337,7 @@ function assumes HEADLINE will be treated as a frame."
     (if (and (stringp opt)
             (string-match "\\(?:^\\|,\\)label=\\(.*?\\)\\(?:$\\|,\\)" opt))
        (match-string 1 opt)
-      (concat "sec:" (org-export-get-reference headline info)))))
+      (format "{sec:%s}" (org-export-get-reference headline info)))))
 
 (defun org-beamer--frame-level (headline info)
   "Return frame level in subtree containing HEADLINE.
-- 
2.4.3