From 2617aa3572939fa4585640f85e3b2b8835827b97 Mon Sep 17 00:00:00 2001
From: Philipp Gesang <phg42.2a@gmail.com>
Date: Thu, 11 Apr 2013 23:06:32 +0200
Subject: update mcb.lua for 5.2

---
 Makefile           | 2 +-
 luatexbase-mcb.dtx | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 0f65bf1..188d1e4 100644
--- a/Makefile
+++ b/Makefile
@@ -84,7 +84,7 @@ luatexbase.%.lua: %.lua
 
 $(UNPACKED_MCB): luatexbase-mcb.dtx
 	$(DO_TEX)
-	echo \\\\relax > $(TEST_MCB)
+	echo \\relax > $(TEST_MCB)
 
 $(UNPACKED_REGS): luatexbase-regs.dtx
 	$(DO_TEX)
diff --git a/luatexbase-mcb.dtx b/luatexbase-mcb.dtx
index b26f56f..e292b50 100644
--- a/luatexbase-mcb.dtx
+++ b/luatexbase-mcb.dtx
@@ -733,7 +733,7 @@ function remove_from_callback (name, description)
     end
     table.remove(l, index)
     info("removing '%s'\nfrom '%s'", description, name)
-    if table.maxn(l) == 0 then
+    if #l == 0 then
         callbacklist[name] = nil
         if not lua_callbacks_defaults[name] then
             register_callback(name, nil)
-- 
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