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-rw-r--r--Master/texmf-dist/source/latex/l3experimental/l3sort/l3sort.dtx20
1 files changed, 17 insertions, 3 deletions
diff --git a/Master/texmf-dist/source/latex/l3experimental/l3sort/l3sort.dtx b/Master/texmf-dist/source/latex/l3experimental/l3sort/l3sort.dtx
index b4a8b10be1a..ecccb6e8986 100644
--- a/Master/texmf-dist/source/latex/l3experimental/l3sort/l3sort.dtx
+++ b/Master/texmf-dist/source/latex/l3experimental/l3sort/l3sort.dtx
@@ -1,6 +1,6 @@
% \iffalse
%
-%% File l3sort.dtx (C) Copyright 2012 The LaTeX3 Project
+%% File l3sort.dtx (C) Copyright 2012,2014 The LaTeX3 Project
%%
%% It may be distributed and/or modified under the conditions of the
%% LaTeX Project Public License (LPPL), either version 1.3c of this
@@ -35,8 +35,22 @@
%%
%
%<*driver|package>
-\RequirePackage{expl3}
-\GetIdInfo$Id: l3sort.dtx 4623 2013-12-14 13:53:40Z bruno $
+% The version of expl3 required is tested as early as possible, as
+% some really old versions do not define \ProvidesExplPackage.
+\RequirePackage{expl3}[2014/08/25]
+%<package>\@ifpackagelater{expl3}{2014/08/25}
+%<package> {}
+%<package> {%
+%<package> \PackageError{l3sort}{Support package l3kernel too old}
+%<package> {%
+%<package> Please install an up to date version of l3kernel\MessageBreak
+%<package> using your TeX package manager or from CTAN.\MessageBreak
+%<package> \MessageBreak
+%<package> Loading l3sort will abort!%
+%<package> }%
+%<package> \endinput
+%<package> }
+\GetIdInfo$Id: l3sort.dtx 5378 2014-08-25 10:59:48Z joseph $
{L3 Experimental sorting functions}
%</driver|package>
%<*driver>