From 348c95d1bfaa02f600787e386e33b628af7f4b59 Mon Sep 17 00:00:00 2001
From: Richard Heck <rgheck@lyx.org>
Date: Thu, 20 Oct 2016 22:52:54 -0400
Subject: [PATCH] We can now use the cached information instead of tracing the
 graph.

(cherry picked from commit 7c9e9b4c90fade3be8623a9fc1a509e06872a9cd)
---
 src/BufferParams.cpp | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/BufferParams.cpp b/src/BufferParams.cpp
index e409dff8f0..8af927ade3 100644
--- a/src/BufferParams.cpp
+++ b/src/BufferParams.cpp
@@ -2403,11 +2403,13 @@ string BufferParams::bufferFormat() const
 
 bool BufferParams::isExportable(string const & format) const
 {
-	vector<string> backs = backends();
-	for (vector<string>::const_iterator it = backs.begin();
-	     it != backs.end(); ++it)
-		if (theConverters().isReachable(*it, format))
+	FormatList const & formats = exportableFormats(false);
+	FormatList::const_iterator fit = formats.begin();
+	FormatList::const_iterator end = formats.end();
+	for (; fit != end ; ++fit) {
+		if ((*fit)->name() == format)
 			return true;
+	}
 	return false;
 }