From 145e048da74c921d3ef2865e2f95793480b8b315 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Manuel=20P=C3=A9gouri=C3=A9-Gonnard?= <mpg@elzevir.fr>
Date: Mon, 29 Mar 2010 14:51:36 +0200
Subject: Better cooperation with original package loader.

---
 Changes               |  1 +
 TODO                  |  5 -----
 luatexbase-loader.dtx | 18 ++++++++++++++++--
 3 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/Changes b/Changes
index b6462b1..ece39b4 100644
--- a/Changes
+++ b/Changes
@@ -19,6 +19,7 @@
     luatexbase-loader
         - require"foo.bar" now looks for foo/bar then foo.bar, see doc for
           details
+        - better cooperation with the original package loader
         - works with luatex 0.25.4
 
 2010/03/28
diff --git a/TODO b/TODO
index e1c02ef..b81d103 100644
--- a/TODO
+++ b/TODO
@@ -1,8 +1,3 @@
-loader
-------
-
-- write doc
-
 modutils
 --------
 
diff --git a/luatexbase-loader.dtx b/luatexbase-loader.dtx
index 432a66d..c3eb1f6 100644
--- a/luatexbase-loader.dtx
+++ b/luatexbase-loader.dtx
@@ -338,11 +338,23 @@ local function find_module_file(mod)
 end
 %    \end{macrocode}
 %
+%    Combined searcher, using primarily the new kpse searcher, and the
+%    original as a fall-back.
+%
 %    \begin{macrocode}
+local package_loader_two = package.loaders[2]
 local function load_module(mod)
   local file = find_module_file(mod)
   if not file then
-    return "\n\t[luatexbase.loader] Search failed"
+    local msg = "\n\t[luatexbase.loader] Search failed"
+    local ret = package_loader_two(mod)
+    if type(ret) == 'string' then
+      return msg..ret
+    elseif type(ret) == 'nil' then
+      return msg
+    else
+      return ret
+    end
   end
   local loader, error = loadfile(file)
   if not loader then
@@ -353,8 +365,10 @@ local function load_module(mod)
 end
 %    \end{macrocode}
 %
+%    Finally install this combined loader as loader 2.
+%
 %    \begin{macrocode}
-table.insert(package.loaders, 2, load_module)
+package.loaders[2] = load_module
 %</luamodule>
 %    \end{macrocode}
 %
-- 
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