From 82fd7d8aab5f5603b7fb00191efc6f6bbe73ab0b Mon Sep 17 00:00:00 2001
From: Philipp Gesang <phg42.2a@gmail.com>
Date: Fri, 10 May 2013 21:38:13 +0200
Subject: divert Lua<5.2 to legacy script in luaotfload-tool

---
 luaotfload-tool.lua | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'luaotfload-tool.lua')

diff --git a/luaotfload-tool.lua b/luaotfload-tool.lua
index 2c525d9..b16fe49 100755
--- a/luaotfload-tool.lua
+++ b/luaotfload-tool.lua
@@ -26,6 +26,20 @@ see the luaotfload documentation for more info. Report bugs to
 
 --doc]]--
 
+--[[doc--
+
+    We test for Lua 5.1 by means of capability detection to see if
+    we’re running an outdated Luatex.  If so, we hand over control to
+    the legacy db runner.
+
+    \url{http://lua-users.org/wiki/LuaVersionCompatibility}
+
+--doc]]--
+
+if _G.getfenv then
+    return require"luaotfload-legacy-tool"
+end
+
 kpse.set_program_name"luatex"
 
 local stringformat    = string.format
-- 
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