Hiding the braces when org-pretty-entities is enabled

["Mark E. Shoulson" <mark@kli.org>]

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From 819e66254de18ae78e96b52dee1b5098920c3e31 Mon Sep 17 00:00:00 2001
From: Mark Shoulson <mark@kli.org>
Date: Fri, 4 May 2012 18:19:06 -0400
Subject: [PATCH] Entities: when org-pretty-entities is on, the {} terminating
 entities is also hidden

---
 lisp/org.el |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/lisp/org.el b/lisp/org.el
index 8776664..65dc1ce 100644
--- a/lisp/org.el
+++ b/lisp/org.el
@@ -5938,16 +5938,19 @@ needs to be inserted at a specific position in the font-lock sequence.")
     (when org-pretty-entities
       (catch 'match
 	(while (re-search-forward
-		"\\\\\\(frac[13][24]\\|[a-zA-Z]+\\)\\($\\|[^[:alpha:]\n]\\)"
+		"\\\\\\(frac[13][24]\\|[a-zA-Z]+\\)\\($\\|{}\\|[^[:alpha:]\n]\\)"
 		limit t)
 	  (if (and (not (org-in-indented-comment-line))
 		   (setq ee (org-entity-get (match-string 1)))
 		   (= (length (nth 6 ee)) 1))
-	      (progn
+	      (let*
+		  ((end (if (equal (match-string 2) "{}")
+			    (match-end 2)
+			  (match-end 1))))
 		(add-text-properties
-		 (match-beginning 0) (match-end 1)
+		 (match-beginning 0) end
 		 (list 'font-lock-fontified t))
-		(compose-region (match-beginning 0) (match-end 1)
+		(compose-region (match-beginning 0) end
 				(nth 6 ee) nil)
 		(backward-char 1)
 		(throw 'match t))))
-- 
1.7.7.6