l3 (21apr16)

git-svn-id: svn://tug.org/texlive/trunk@40657 c570f23f-e606-0410-a88d-b1316a301751

54 files changed, 176 insertions, 137 deletions

diff --git a/Master/texmf-dist/doc/latex/l3experimental/README.md b/Master/texmf-dist/doc/latex/l3experimental/README.md
index dcf8ecb1a4b..259cf2169e6 100644
--- a/Master/texmf-dist/doc/latex/l3experimental/README.md
+++ b/Master/texmf-dist/doc/latex/l3experimental/README.md
@@ -1,7 +1,7 @@
 Experimental LaTeX3 Concepts
 ============================
 
-Release 2016/03/26 (r6466)
+Release 2016/04/20 (r6476)
 
 Overview
 --------
diff --git a/Master/texmf-dist/doc/latex/l3experimental/l3sort/l3sort.pdf b/Master/texmf-dist/doc/latex/l3experimental/l3sort/l3sort.pdf
index 384d28b86e9..1013e668419 100644
--- a/Master/texmf-dist/doc/latex/l3experimental/l3sort/l3sort.pdf
+++ b/Master/texmf-dist/doc/latex/l3experimental/l3sort/l3sort.pdf
diff --git a/Master/texmf-dist/doc/latex/l3experimental/l3str/l3flag.pdf b/Master/texmf-dist/doc/latex/l3experimental/l3str/l3flag.pdf
index 2fc0c52037c..086614c6818 100644
--- a/Master/texmf-dist/doc/latex/l3experimental/l3str/l3flag.pdf
+++ b/Master/texmf-dist/doc/latex/l3experimental/l3str/l3flag.pdf
diff --git a/Master/texmf-dist/doc/latex/l3experimental/l3str/l3regex.pdf b/Master/texmf-dist/doc/latex/l3experimental/l3str/l3regex.pdf
index 042198c086a..9498a272f59 100644
--- a/Master/texmf-dist/doc/latex/l3experimental/l3str/l3regex.pdf
+++ b/Master/texmf-dist/doc/latex/l3experimental/l3str/l3regex.pdf
diff --git a/Master/texmf-dist/doc/latex/l3experimental/l3str/l3str-convert.pdf b/Master/texmf-dist/doc/latex/l3experimental/l3str/l3str-convert.pdf
index 7bac7f36f56..d8ccaf8617e 100644
--- a/Master/texmf-dist/doc/latex/l3experimental/l3str/l3str-convert.pdf
+++ b/Master/texmf-dist/doc/latex/l3experimental/l3str/l3str-convert.pdf
diff --git a/Master/texmf-dist/doc/latex/l3experimental/l3str/l3str-format.pdf b/Master/texmf-dist/doc/latex/l3experimental/l3str/l3str-format.pdf
index 11157e6ee96..2317400a6e1 100644
--- a/Master/texmf-dist/doc/latex/l3experimental/l3str/l3str-format.pdf
+++ b/Master/texmf-dist/doc/latex/l3experimental/l3str/l3str-format.pdf
diff --git a/Master/texmf-dist/doc/latex/l3experimental/l3str/l3tl-analysis.pdf b/Master/texmf-dist/doc/latex/l3experimental/l3str/l3tl-analysis.pdf
index a4754b36e1a..269302d2052 100644
--- a/Master/texmf-dist/doc/latex/l3experimental/l3str/l3tl-analysis.pdf
+++ b/Master/texmf-dist/doc/latex/l3experimental/l3str/l3tl-analysis.pdf
diff --git a/Master/texmf-dist/doc/latex/l3experimental/l3str/l3tl-build.pdf b/Master/texmf-dist/doc/latex/l3experimental/l3str/l3tl-build.pdf
index 517fa5f3690..50ceae34ef7 100644
--- a/Master/texmf-dist/doc/latex/l3experimental/l3str/l3tl-build.pdf
+++ b/Master/texmf-dist/doc/latex/l3experimental/l3str/l3tl-build.pdf
diff --git a/Master/texmf-dist/doc/latex/l3experimental/xcoffins/xcoffins.pdf b/Master/texmf-dist/doc/latex/l3experimental/xcoffins/xcoffins.pdf
index 371cd0be3e1..3c5d08fde58 100644
--- a/Master/texmf-dist/doc/latex/l3experimental/xcoffins/xcoffins.pdf
+++ b/Master/texmf-dist/doc/latex/l3experimental/xcoffins/xcoffins.pdf
diff --git a/Master/texmf-dist/doc/latex/l3experimental/xgalley/l3galley.pdf b/Master/texmf-dist/doc/latex/l3experimental/xgalley/l3galley.pdf
index 7c1e2a52a96..b8efaf93486 100644
--- a/Master/texmf-dist/doc/latex/l3experimental/xgalley/l3galley.pdf
+++ b/Master/texmf-dist/doc/latex/l3experimental/xgalley/l3galley.pdf
diff --git a/Master/texmf-dist/doc/latex/l3experimental/xgalley/xgalley.pdf b/Master/texmf-dist/doc/latex/l3experimental/xgalley/xgalley.pdf
index cfab0a913b5..e3aab346492 100644
--- a/Master/texmf-dist/doc/latex/l3experimental/xgalley/xgalley.pdf
+++ b/Master/texmf-dist/doc/latex/l3experimental/xgalley/xgalley.pdf
diff --git a/Master/texmf-dist/doc/latex/l3kernel/README.md b/Master/texmf-dist/doc/latex/l3kernel/README.md
index 24410327d1e..ac4de7aeac8 100644
--- a/Master/texmf-dist/doc/latex/l3kernel/README.md
+++ b/Master/texmf-dist/doc/latex/l3kernel/README.md
@@ -1,7 +1,7 @@
 LaTeX3 Programming Conventions
 ==============================
 
-Release 2016/03/28 (r6468)
+Release 2016/04/20 (r6476)
 
 Overview
 --------
diff --git a/Master/texmf-dist/doc/latex/l3kernel/expl3.pdf b/Master/texmf-dist/doc/latex/l3kernel/expl3.pdf
index 94402ce7a71..2d85a91eb70 100644
--- a/Master/texmf-dist/doc/latex/l3kernel/expl3.pdf
+++ b/Master/texmf-dist/doc/latex/l3kernel/expl3.pdf
diff --git a/Master/texmf-dist/doc/latex/l3kernel/interface3.pdf b/Master/texmf-dist/doc/latex/l3kernel/interface3.pdf
index 680a35fc64a..63dcee7e040 100644
--- a/Master/texmf-dist/doc/latex/l3kernel/interface3.pdf
+++ b/Master/texmf-dist/doc/latex/l3kernel/interface3.pdf
diff --git a/Master/texmf-dist/doc/latex/l3kernel/l3docstrip.pdf b/Master/texmf-dist/doc/latex/l3kernel/l3docstrip.pdf
index e7c299c7146..2c8fdec0843 100644
--- a/Master/texmf-dist/doc/latex/l3kernel/l3docstrip.pdf
+++ b/Master/texmf-dist/doc/latex/l3kernel/l3docstrip.pdf
diff --git a/Master/texmf-dist/doc/latex/l3kernel/l3styleguide.pdf b/Master/texmf-dist/doc/latex/l3kernel/l3styleguide.pdf
index 7bd46903a69..e46520e6673 100644
--- a/Master/texmf-dist/doc/latex/l3kernel/l3styleguide.pdf
+++ b/Master/texmf-dist/doc/latex/l3kernel/l3styleguide.pdf
diff --git a/Master/texmf-dist/doc/latex/l3kernel/l3syntax-changes.pdf b/Master/texmf-dist/doc/latex/l3kernel/l3syntax-changes.pdf
index a13701ebebd..e88a95bff58 100644
--- a/Master/texmf-dist/doc/latex/l3kernel/l3syntax-changes.pdf
+++ b/Master/texmf-dist/doc/latex/l3kernel/l3syntax-changes.pdf
diff --git a/Master/texmf-dist/doc/latex/l3kernel/source3.pdf b/Master/texmf-dist/doc/latex/l3kernel/source3.pdf
index c2eb5052639..f0532f99a35 100644
--- a/Master/texmf-dist/doc/latex/l3kernel/source3.pdf
+++ b/Master/texmf-dist/doc/latex/l3kernel/source3.pdf
diff --git a/Master/texmf-dist/doc/latex/l3packages/README.md b/Master/texmf-dist/doc/latex/l3packages/README.md
index c90c8b9f8be..de51f867acf 100644
--- a/Master/texmf-dist/doc/latex/l3packages/README.md
+++ b/Master/texmf-dist/doc/latex/l3packages/README.md
@@ -1,7 +1,7 @@
 LaTeX3 High-Level Concepts
 ==========================
 
-Release 2016/03/28 (r6468)
+Release 2016/04/20 (r6476)
 
 Overview
 --------
diff --git a/Master/texmf-dist/doc/latex/l3packages/l3keys2e/l3keys2e.pdf b/Master/texmf-dist/doc/latex/l3packages/l3keys2e/l3keys2e.pdf
index 233d1b66fc0..379617d1bd2 100644
--- a/Master/texmf-dist/doc/latex/l3packages/l3keys2e/l3keys2e.pdf
+++ b/Master/texmf-dist/doc/latex/l3packages/l3keys2e/l3keys2e.pdf
diff --git a/Master/texmf-dist/doc/latex/l3packages/xfrac/xfrac.pdf b/Master/texmf-dist/doc/latex/l3packages/xfrac/xfrac.pdf
index 11e5645bb96..35cca2226b5 100644
--- a/Master/texmf-dist/doc/latex/l3packages/xfrac/xfrac.pdf
+++ b/Master/texmf-dist/doc/latex/l3packages/xfrac/xfrac.pdf
diff --git a/Master/texmf-dist/doc/latex/l3packages/xparse/xparse.pdf b/Master/texmf-dist/doc/latex/l3packages/xparse/xparse.pdf
index 130350246a6..7b594c7abaf 100644
--- a/Master/texmf-dist/doc/latex/l3packages/xparse/xparse.pdf
+++ b/Master/texmf-dist/doc/latex/l3packages/xparse/xparse.pdf
diff --git a/Master/texmf-dist/doc/latex/l3packages/xtemplate/xtemplate.pdf b/Master/texmf-dist/doc/latex/l3packages/xtemplate/xtemplate.pdf
index 0defad6b56d..62bbbe2abfe 100644
--- a/Master/texmf-dist/doc/latex/l3packages/xtemplate/xtemplate.pdf
+++ b/Master/texmf-dist/doc/latex/l3packages/xtemplate/xtemplate.pdf
diff --git a/Master/texmf-dist/source/latex/l3experimental/l3sort/l3sort.dtx b/Master/texmf-dist/source/latex/l3experimental/l3sort/l3sort.dtx
index 6f34d2836ce..2dbc55d8f01 100644
--- a/Master/texmf-dist/source/latex/l3experimental/l3sort/l3sort.dtx
+++ b/Master/texmf-dist/source/latex/l3experimental/l3sort/l3sort.dtx
@@ -37,8 +37,8 @@
 %<*driver|package>
 % The version of expl3 required is tested as early as possible, as
 % some really old versions do not define \ProvidesExplPackage.
-\RequirePackage{expl3}[2016/03/26]
-%<package>\@ifpackagelater{expl3}{2016/03/26}
+\RequirePackage{expl3}[2016/04/20]
+%<package>\@ifpackagelater{expl3}{2016/04/20}
 %<package>  {}
 %<package>  {%
 %<package>    \PackageError{l3sort}{Support package l3kernel too old}
@@ -50,7 +50,7 @@
 %<package>      }%
 %<package>    \endinput
 %<package>  }
-\GetIdInfo$Id: l3sort.dtx 6466 2016-03-26 16:23:41Z joseph $
+\GetIdInfo$Id: l3sort.dtx 6476 2016-04-20 19:46:45Z joseph $
   {L3 Experimental sorting functions}
 %</driver|package>
 %<*driver>
diff --git a/Master/texmf-dist/source/latex/l3experimental/l3str/l3flag.dtx b/Master/texmf-dist/source/latex/l3experimental/l3str/l3flag.dtx
index 8807c514eb3..016b1191bee 100644
--- a/Master/texmf-dist/source/latex/l3experimental/l3str/l3flag.dtx
+++ b/Master/texmf-dist/source/latex/l3experimental/l3str/l3flag.dtx
@@ -36,8 +36,8 @@
 %<*driver|package>
 % The version of expl3 required is tested as early as possible, as
 % some really old versions do not define \ProvidesExplPackage.
-\RequirePackage{expl3}[2016/03/26]
-%<package>\@ifpackagelater{expl3}{2016/03/26}
+\RequirePackage{expl3}[2016/04/20]
+%<package>\@ifpackagelater{expl3}{2016/04/20}
 %<package>  {}
 %<package>  {%
 %<package>    \PackageError{l3flag}{Support package l3kernel too old}
@@ -49,7 +49,7 @@
 %<package>      }%
 %<package>    \endinput
 %<package>  }
-\GetIdInfo$Id: l3flag.dtx 6466 2016-03-26 16:23:41Z joseph $
+\GetIdInfo$Id: l3flag.dtx 6476 2016-04-20 19:46:45Z joseph $
   {L3 Experimental flags}
 %</driver|package>
 %<*driver>
diff --git a/Master/texmf-dist/source/latex/l3experimental/l3str/l3regex.dtx b/Master/texmf-dist/source/latex/l3experimental/l3str/l3regex.dtx
index 9a80d0e37a1..470ee3ad4e3 100644
--- a/Master/texmf-dist/source/latex/l3experimental/l3str/l3regex.dtx
+++ b/Master/texmf-dist/source/latex/l3experimental/l3str/l3regex.dtx
@@ -36,8 +36,8 @@
 %<*driver|package>
 % The version of expl3 required is tested as early as possible, as
 % some really old versions do not define \ProvidesExplPackage.
-\RequirePackage{expl3}[2016/03/26]
-%<package>\@ifpackagelater{expl3}{2016/03/26}
+\RequirePackage{expl3}[2016/04/20]
+%<package>\@ifpackagelater{expl3}{2016/04/20}
 %<package>  {}
 %<package>  {%
 %<package>    \PackageError{l3regex}{Support package l3kernel too old}
@@ -49,7 +49,7 @@
 %<package>      }%
 %<package>    \endinput
 %<package>  }
-\GetIdInfo$Id: l3regex.dtx 6466 2016-03-26 16:23:41Z joseph $
+\GetIdInfo$Id: l3regex.dtx 6476 2016-04-20 19:46:45Z joseph $
   {L3 Experimental regular expressions}
 %</driver|package>
 %<*driver>
diff --git a/Master/texmf-dist/source/latex/l3experimental/l3str/l3tl-build.dtx b/Master/texmf-dist/source/latex/l3experimental/l3str/l3tl-build.dtx
index 02ea7635874..2d87c600ef9 100644
--- a/Master/texmf-dist/source/latex/l3experimental/l3str/l3tl-build.dtx
+++ b/Master/texmf-dist/source/latex/l3experimental/l3str/l3tl-build.dtx
@@ -36,8 +36,8 @@
 %<*driver|package>
 % The version of expl3 required is tested as early as possible, as
 % some really old versions do not define \ProvidesExplPackage.
-\RequirePackage{expl3}[2016/03/26]
-%<package>\@ifpackagelater{expl3}{2016/03/26}
+\RequirePackage{expl3}[2016/04/20]
+%<package>\@ifpackagelater{expl3}{2016/04/20}
 %<package>  {}
 %<package>  {%
 %<package>    \PackageError{l3tl-build}{Support package l3kernel too old}
@@ -49,7 +49,7 @@
 %<package>      }%
 %<package>    \endinput
 %<package>  }
-\GetIdInfo$Id: l3tl-build.dtx 6466 2016-03-26 16:23:41Z joseph $
+\GetIdInfo$Id: l3tl-build.dtx 6476 2016-04-20 19:46:45Z joseph $
   {L3 Experimental token list construction}
 %</driver|package>
 %<*driver>
diff --git a/Master/texmf-dist/source/latex/l3experimental/xgalley/l3galley.dtx b/Master/texmf-dist/source/latex/l3experimental/xgalley/l3galley.dtx
index 602463015fe..5e8185bd7b2 100644
--- a/Master/texmf-dist/source/latex/l3experimental/xgalley/l3galley.dtx
+++ b/Master/texmf-dist/source/latex/l3experimental/xgalley/l3galley.dtx
@@ -38,8 +38,8 @@
 %<*driver|package>
 % The version of expl3 required is tested as early as possible, as
 % some really old versions do not define \ProvidesExplPackage.
-\RequirePackage{expl3}[2016/03/26]
-%<package>\@ifpackagelater{expl3}{2016/03/26}
+\RequirePackage{expl3}[2016/04/20]
+%<package>\@ifpackagelater{expl3}{2016/04/20}
 %<package>  {}
 %<package>  {%
 %<package>    \PackageError{l3galley}{Support package l3kernel too old}
@@ -51,7 +51,7 @@
 %<package>      }%
 %<package>    \endinput
 %<package>  }
-\GetIdInfo$Id: l3galley.dtx 6466 2016-03-26 16:23:41Z joseph $
+\GetIdInfo$Id: l3galley.dtx 6476 2016-04-20 19:46:45Z joseph $
   {L3 Experimental galley code}
 %</driver|package>
 %<*driver>
diff --git a/Master/texmf-dist/source/latex/l3kernel/expl3.dtx b/Master/texmf-dist/source/latex/l3kernel/expl3.dtx
index c4bc414c605..27394c1d22e 100644
--- a/Master/texmf-dist/source/latex/l3kernel/expl3.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/expl3.dtx
@@ -36,8 +36,8 @@
 %<*driver|generic|package>
 \def\ExplFileName{expl3}%
 \def\ExplFileDescription{L3 programming layer}%
-\def\ExplFileDate{2016/03/28}%
-\def\ExplFileVersion{6468}%
+\def\ExplFileDate{2016/04/20}%
+\def\ExplFileVersion{6476}%
 %</driver|generic|package>
 %<*driver>
 \documentclass[full]{l3doc}
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3doc.dtx b/Master/texmf-dist/source/latex/l3kernel/l3doc.dtx
index 0a7199928e0..c7148f54747 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3doc.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3doc.dtx
@@ -75,7 +75,7 @@ Do not distribute a modified version of this file.
 %
 %<*driver|class>
 \RequirePackage{expl3,xparse,calc}
-\GetIdInfo$Id: l3doc.dtx 6448 2016-03-25 12:27:53Z bruno $
+\GetIdInfo$Id: l3doc.dtx 6474 2016-04-11 18:09:21Z qinglee $
           {L3 Experimental documentation class}
 %</driver|class>
 %
@@ -2252,13 +2252,12 @@ Do not distribute a modified version of this file.
 %     \item Macro/function/whatever name; input has already been
 %       sanitised.
 %   \end{arguments}
-%   The assignment to \cs{saved@macroname} is used by \pkg{doc}'s
-%   \cs{changes} mechanism.
+%   The assignments to \cs{saved@macroname} and \cs{saved@indexname}
+%   are used by \pkg{doc}'s \cs{changes} mechanism.
 %    \begin{macrocode}
 \cs_new_protected:Npn \@@_macro_single:n #1
   {
     \tl_set:Nn \saved@macroname {#1}
-
     \@@_macro_typeset_one:n {#1}
     \exp_args:Nx \@@_macro_index:n
       {
@@ -2270,15 +2269,15 @@ Do not distribute a modified version of this file.
   {
     \bool_if:NF \l_@@_macro_aux_bool
       { \seq_gput_right:Nn \g_doc_macros_seq {#1} }
-    \hbox_set:Nn \l_@@_macro_index_box
-      {
-        % This box only contains targets... it seems inefficient.
-        \hbox_unpack_clear:N \l_@@_macro_index_box
-        \int_gincr:N \c@CodelineNo
-        \@@_special_index:nn {#1} { main }
-        \DoNotIndex {#1}
-        \int_gdecr:N \c@CodelineNo
-      }
+    \hbox_set:Nw \l_@@_macro_index_box
+      % This box only contains targets... it seems inefficient.
+      \hbox_unpack_clear:N \l_@@_macro_index_box
+      \int_gincr:N \c@CodelineNo
+      \@@_special_index:nn {#1} { main }
+      \DoNotIndex {#1}
+      \int_gdecr:N \c@CodelineNo
+    \exp_args:NNNo \hbox_set_end:
+      \tl_set:Nn \saved@indexname { \l_@@_index_key_tl }
   }
 %    \end{macrocode}
 % \end{macro}
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3drivers.dtx b/Master/texmf-dist/source/latex/l3kernel/l3drivers.dtx
index a18533f82c7..a3569329cd5 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3drivers.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3drivers.dtx
@@ -1,6 +1,6 @@
 % \iffalse meta-comment
 %
-%% File: l3drivers.dtx Copyright(C) 2011-2015 The LaTeX3 Project
+%% File: l3drivers.dtx Copyright(C) 2011-2016 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
@@ -38,7 +38,7 @@
 \documentclass[full]{l3doc}
 %</driver>
 %<*driver|package>
-\GetIdInfo$Id: l3drivers.dtx 6281 2015-11-17 07:11:52Z joseph $
+\GetIdInfo$Id: l3drivers.dtx 6472 2016-04-05 13:26:17Z joseph $
   {L3 Experimental drivers}
 %</driver|package>
 %<*driver>
@@ -498,7 +498,8 @@
 %
 % \begin{variable}{\l_@@_current_color_tl}
 %   The current color is needed by all of the engines, but the way this
-%   is stored varies.
+%   is stored varies. In package mode if the \pkg{color} package is loaded
+%   simply pick up what it is using.
 %    \begin{macrocode}
 \tl_new:N \l_@@_current_color_tl
 %<*dvipdfmx|dvips|xdvipdfmx>
@@ -507,6 +508,14 @@
 %<*pdfmode>
 \tl_set:Nn \l_@@_current_color_tl { 0~g~0~G }
 %</pdfmode>
+%<*package>
+\AtBeginDocument
+  {
+    \@ifpackageloaded { color }
+      { \tl_set:Nn \l_@@_current_color_tl { \current@color } }
+      { }
+  }
+%</package>
 %    \end{macrocode}
 % \end{variable}
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3token.dtx b/Master/texmf-dist/source/latex/l3kernel/l3token.dtx
index 3485c03c978..ac7ed290c36 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3token.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3token.dtx
@@ -37,7 +37,7 @@
 \documentclass[full]{l3doc}
 %</driver>
 %<*driver|package>
-\GetIdInfo$Id: l3token.dtx 6465 2016-03-26 16:15:09Z joseph $
+\GetIdInfo$Id: l3token.dtx 6470 2016-04-03 11:29:18Z joseph $
   {L3 Experimental token manipulation}
 %</driver|package>
 %<*driver>
@@ -1411,8 +1411,21 @@
       \tl_set:Nx \l_@@_tmp_tl { \l_@@_tmp_tl }
       \char_set_catcode_math_toggle:n { 0 }
       \tl_put_right:Nn \l_@@_tmp_tl { \or: ^^@ }
+%    \end{macrocode}
+%   As \TeX{} will be very unhappy if if finds an alignment character inside
+%   a primitive \tn{halign} even when skipping false branches, some precautions
+%   are required. \TeX{} will be happy if the token is hidden inside
+%   \tn{unexpanded} (which needs to be the primitive). The expansion chain here
+%   is required so that the conditional gets cleaned up correctly (other code
+%   assumes there is exactly one token to skip during the clean-up).
+%    \begin{macrocode}
       \char_set_catcode_alignment:n { 0 }
-      \tl_put_right:Nn \l_@@_tmp_tl { \or: ^^@ }
+      \tl_put_right:Nn \l_@@_tmp_tl
+        {
+          \or:
+            \etex_unexpanded:D \exp_after:wN
+              { \exp_after:wN ^^@ \exp_after:wN }
+        }
       \tl_put_right:Nn \l_@@_tmp_tl { \or: }
       \char_set_catcode_parameter:n { 0 }
       \tl_put_right:Nn \l_@@_tmp_tl { \or: ^^@ }
diff --git a/Master/texmf-dist/source/latex/l3packages/l3keys2e/l3keys2e.dtx b/Master/texmf-dist/source/latex/l3packages/l3keys2e/l3keys2e.dtx
index 6787b1493aa..035c21945e1 100644
--- a/Master/texmf-dist/source/latex/l3packages/l3keys2e/l3keys2e.dtx
+++ b/Master/texmf-dist/source/latex/l3packages/l3keys2e/l3keys2e.dtx
@@ -37,8 +37,8 @@
 %<*driver|package>
 % The version of expl3 required is tested as early as possible, as
 % some really old versions do not define \ProvidesExplPackage.
-\RequirePackage{expl3}[2016/03/28]
-%<package>\@ifpackagelater{expl3}{2016/03/28}
+\RequirePackage{expl3}[2016/04/20]
+%<package>\@ifpackagelater{expl3}{2016/04/20}
 %<package>  {}
 %<package>  {%
 %<package>    \PackageError{l3keys2e}{Support package l3kernel too old}
@@ -52,8 +52,8 @@
 %<package>  }
 \def\ExplFileName{l3keys2e}
 \def\ExplFileDescription{LaTeX2e option processing using LaTeX3 keys}
-\def\ExplFileDate{2016/03/28}
-\def\ExplFileVersion{6468}
+\def\ExplFileDate{2016/04/20}
+\def\ExplFileVersion{6476}
 %</driver|package>
 %<*driver>
 \documentclass[full]{l3doc}
diff --git a/Master/texmf-dist/source/latex/l3packages/xfrac/xfrac.dtx b/Master/texmf-dist/source/latex/l3packages/xfrac/xfrac.dtx
index 6778de2390a..b6330fa6a8d 100644
--- a/Master/texmf-dist/source/latex/l3packages/xfrac/xfrac.dtx
+++ b/Master/texmf-dist/source/latex/l3packages/xfrac/xfrac.dtx
@@ -38,8 +38,8 @@
 %<*driver|package>
 % The version of expl3 required is tested as early as possible, as
 % some really old versions do not define \ProvidesExplPackage.
-\RequirePackage{expl3}[2016/03/28]
-%<package>\@ifpackagelater{expl3}{2016/03/28}
+\RequirePackage{expl3}[2016/04/20]
+%<package>\@ifpackagelater{expl3}{2016/04/20}
 %<package>  {}
 %<package>  {%
 %<package>    \PackageError{xfrac}{Support package l3kernel too old}
@@ -54,8 +54,8 @@
 \RequirePackage{amstext,graphicx,l3keys2e,textcomp,xparse,xtemplate}
 \def\ExplFileName{xfrac}
 \def\ExplFileDescription{L3 Experimental split-level fractions}
-\def\ExplFileDate{2016/03/28}
-\def\ExplFileVersion{6468}
+\def\ExplFileDate{2016/04/20}
+\def\ExplFileVersion{6476}
 %</driver|package>
 %<*driver>
 \documentclass[full]{l3doc}
diff --git a/Master/texmf-dist/source/latex/l3packages/xparse/xparse.dtx b/Master/texmf-dist/source/latex/l3packages/xparse/xparse.dtx
index 5ebeddb5e5e..343751e6ad1 100644
--- a/Master/texmf-dist/source/latex/l3packages/xparse/xparse.dtx
+++ b/Master/texmf-dist/source/latex/l3packages/xparse/xparse.dtx
@@ -41,8 +41,8 @@
 %<*driver|package>
 % The version of expl3 required is tested as early as possible, as
 % some really old versions do not define \ProvidesExplPackage.
-\RequirePackage{expl3}[2016/03/28]
-%<package>\@ifpackagelater{expl3}{2016/03/28}
+\RequirePackage{expl3}[2016/04/20]
+%<package>\@ifpackagelater{expl3}{2016/04/20}
 %<package>  {}
 %<package>  {%
 %<package>    \PackageError{xparse}{Support package l3kernel too old}
@@ -56,8 +56,8 @@
 %<package>  }
 \def\ExplFileName{xparse}
 \def\ExplFileDescription{L3 Experimental document command parser}
-\def\ExplFileDate{2016/03/28}
-\def\ExplFileVersion{6468}
+\def\ExplFileDate{2016/04/20}
+\def\ExplFileVersion{6476}
 %</driver|package>
 %<*driver>
 \documentclass[full]{l3doc}
@@ -1088,17 +1088,17 @@
   {
     \@@_declare_cmd_internal:cnx { environment~ #1 } {#2}
       {
-        \cs_set_protected_nopar:Npx \exp_not:c { environment~ #1 ~end~aux }
+        \cs_set_nopar:Npx \exp_not:c { environment~ #1 ~end~aux }
           {
-            \exp_not:c { environment~ #1~end~aux~ }
+            \exp_not:N \exp_not:N \exp_not:c { environment~ #1~end~aux~ }
             \exp_not:n { \tl_tail:N \l_@@_args_tl }
           }
         \exp_not:n {#3}
       }
-    \cs_set_protected_nopar:cpx { environment~ #1 ~end }
+    \cs_set_nopar:cpx { environment~ #1 ~end }
       { \exp_not:c { environment~ #1 ~end~aux } }
     \cs_generate_from_arg_count:cNnn
-      { environment~ #1 ~end~aux~ } \cs_set_protected:Npn
+      { environment~ #1 ~end~aux~ } \cs_set:Npn
       \l_@@_current_arg_int {#4}
 %<*package>
     \cs_set_eq:cc {#1}       { environment~ #1 }
@@ -2008,13 +2008,8 @@
 %    \begin{macrocode}
         \token_if_eq_catcode:NNTF + #1
           {
-            \group_begin:
-              \char_set_lccode:nn { `A } { `#1 }
-              \tex_lowercase:D
-                {
-                  \group_end:
-                  \l_@@_fn_tl A
-                }
+            \exp_after:wN \exp_after:wN \exp_after:wN
+              \l_@@_fn_tl \char_generate:nn { `#1 } { 11 }
           }
           {
             \exp_after:wN \l_@@_fn_tl
diff --git a/Master/texmf-dist/source/latex/l3packages/xtemplate/xtemplate.dtx b/Master/texmf-dist/source/latex/l3packages/xtemplate/xtemplate.dtx
index 307d6bceb43..4a9fc0bd802 100644
--- a/Master/texmf-dist/source/latex/l3packages/xtemplate/xtemplate.dtx
+++ b/Master/texmf-dist/source/latex/l3packages/xtemplate/xtemplate.dtx
@@ -41,8 +41,8 @@
 %<*driver|package>
 % The version of expl3 required is tested as early as possible, as
 % some really old versions do not define \ProvidesExplPackage.
-\RequirePackage{expl3}[2016/03/28]
-%<package>\@ifpackagelater{expl3}{2016/03/28}
+\RequirePackage{expl3}[2016/04/20]
+%<package>\@ifpackagelater{expl3}{2016/04/20}
 %<package>  {}
 %<package>  {%
 %<package>    \PackageError{xtemplate}{Support package l3kernel too old}
@@ -56,8 +56,8 @@
 %<package>  }
 \def\ExplFileName{xtemplate}
 \def\ExplFileDescription{L3 Experimental prototype document functions}
-\def\ExplFileDate{2016/03/28}
-\def\ExplFileVersion{6468}
+\def\ExplFileDate{2016/04/20}
+\def\ExplFileVersion{6476}
 %</driver|package>
 %<*driver>
 \documentclass[full]{l3doc}
diff --git a/Master/texmf-dist/tex/latex/l3experimental/l3sort/l3sort.sty b/Master/texmf-dist/tex/latex/l3experimental/l3sort/l3sort.sty
index 4cfee22198c..eb02643481b 100644
--- a/Master/texmf-dist/tex/latex/l3experimental/l3sort/l3sort.sty
+++ b/Master/texmf-dist/tex/latex/l3experimental/l3sort/l3sort.sty
@@ -46,8 +46,8 @@
 %%
 %% -----------------------------------------------------------------------
 %%
-\RequirePackage{expl3}[2016/03/26]
-\@ifpackagelater{expl3}{2016/03/26}
+\RequirePackage{expl3}[2016/04/20]
+\@ifpackagelater{expl3}{2016/04/20}
   {}
   {%
     \PackageError{l3sort}{Support package l3kernel too old}
@@ -59,7 +59,7 @@
       }%
     \endinput
   }
-\GetIdInfo$Id: l3sort.dtx 6466 2016-03-26 16:23:41Z joseph $
+\GetIdInfo$Id: l3sort.dtx 6476 2016-04-20 19:46:45Z joseph $
   {L3 Experimental sorting functions}
 \ProvidesExplPackage
   {\ExplFileName}{\ExplFileDate}{\ExplFileVersion}{\ExplFileDescription}
diff --git a/Master/texmf-dist/tex/latex/l3experimental/l3str/l3flag.sty b/Master/texmf-dist/tex/latex/l3experimental/l3str/l3flag.sty
index 9ff38bdc7c0..02954e8b14f 100644
--- a/Master/texmf-dist/tex/latex/l3experimental/l3str/l3flag.sty
+++ b/Master/texmf-dist/tex/latex/l3experimental/l3str/l3flag.sty
@@ -45,8 +45,8 @@
 %%   prior consultation with the LaTeX3 Project.
 %%
 %% -----------------------------------------------------------------------
-\RequirePackage{expl3}[2016/03/26]
-\@ifpackagelater{expl3}{2016/03/26}
+\RequirePackage{expl3}[2016/04/20]
+\@ifpackagelater{expl3}{2016/04/20}
   {}
   {%
     \PackageError{l3flag}{Support package l3kernel too old}
@@ -58,7 +58,7 @@
       }%
     \endinput
   }
-\GetIdInfo$Id: l3flag.dtx 6466 2016-03-26 16:23:41Z joseph $
+\GetIdInfo$Id: l3flag.dtx 6476 2016-04-20 19:46:45Z joseph $
   {L3 Experimental flags}
 \ProvidesExplPackage
   {\ExplFileName}{\ExplFileDate}{\ExplFileVersion}{\ExplFileDescription}
diff --git a/Master/texmf-dist/tex/latex/l3experimental/l3str/l3regex-trace.sty b/Master/texmf-dist/tex/latex/l3experimental/l3str/l3regex-trace.sty
index 60ed114345a..79195e0f1d5 100644
--- a/Master/texmf-dist/tex/latex/l3experimental/l3str/l3regex-trace.sty
+++ b/Master/texmf-dist/tex/latex/l3experimental/l3str/l3regex-trace.sty
@@ -45,8 +45,8 @@
 %%   prior consultation with the LaTeX3 Project.
 %%
 %% -----------------------------------------------------------------------
-\RequirePackage{expl3}[2016/03/26]
-\@ifpackagelater{expl3}{2016/03/26}
+\RequirePackage{expl3}[2016/04/20]
+\@ifpackagelater{expl3}{2016/04/20}
   {}
   {%
     \PackageError{l3regex}{Support package l3kernel too old}
@@ -58,7 +58,7 @@
       }%
     \endinput
   }
-\GetIdInfo$Id: l3regex.dtx 6466 2016-03-26 16:23:41Z joseph $
+\GetIdInfo$Id: l3regex.dtx 6476 2016-04-20 19:46:45Z joseph $
   {L3 Experimental regular expressions}
 \ProvidesExplPackage
   {\ExplFileName}{\ExplFileDate}{\ExplFileVersion}{\ExplFileDescription}
diff --git a/Master/texmf-dist/tex/latex/l3experimental/l3str/l3regex.sty b/Master/texmf-dist/tex/latex/l3experimental/l3str/l3regex.sty
index 37286265b16..2ae92c23ac8 100644
--- a/Master/texmf-dist/tex/latex/l3experimental/l3str/l3regex.sty
+++ b/Master/texmf-dist/tex/latex/l3experimental/l3str/l3regex.sty
@@ -45,8 +45,8 @@
 %%   prior consultation with the LaTeX3 Project.
 %%
 %% -----------------------------------------------------------------------
-\RequirePackage{expl3}[2016/03/26]
-\@ifpackagelater{expl3}{2016/03/26}
+\RequirePackage{expl3}[2016/04/20]
+\@ifpackagelater{expl3}{2016/04/20}
   {}
   {%
     \PackageError{l3regex}{Support package l3kernel too old}
@@ -58,7 +58,7 @@
       }%
     \endinput
   }
-\GetIdInfo$Id: l3regex.dtx 6466 2016-03-26 16:23:41Z joseph $
+\GetIdInfo$Id: l3regex.dtx 6476 2016-04-20 19:46:45Z joseph $
   {L3 Experimental regular expressions}
 \ProvidesExplPackage
   {\ExplFileName}{\ExplFileDate}{\ExplFileVersion}{\ExplFileDescription}
diff --git a/Master/texmf-dist/tex/latex/l3experimental/l3str/l3tl-build.sty b/Master/texmf-dist/tex/latex/l3experimental/l3str/l3tl-build.sty
index c9c22b3fd38..bf081c6925f 100644
--- a/Master/texmf-dist/tex/latex/l3experimental/l3str/l3tl-build.sty
+++ b/Master/texmf-dist/tex/latex/l3experimental/l3str/l3tl-build.sty
@@ -45,8 +45,8 @@
 %%   prior consultation with the LaTeX3 Project.
 %%
 %% -----------------------------------------------------------------------
-\RequirePackage{expl3}[2016/03/26]
-\@ifpackagelater{expl3}{2016/03/26}
+\RequirePackage{expl3}[2016/04/20]
+\@ifpackagelater{expl3}{2016/04/20}
   {}
   {%
     \PackageError{l3tl-build}{Support package l3kernel too old}
@@ -58,7 +58,7 @@
       }%
     \endinput
   }
-\GetIdInfo$Id: l3tl-build.dtx 6466 2016-03-26 16:23:41Z joseph $
+\GetIdInfo$Id: l3tl-build.dtx 6476 2016-04-20 19:46:45Z joseph $
   {L3 Experimental token list construction}
 \ProvidesExplPackage
   {\ExplFileName}{\ExplFileDate}{\ExplFileVersion}{\ExplFileDescription}
diff --git a/Master/texmf-dist/tex/latex/l3experimental/xgalley/l3galley.sty b/Master/texmf-dist/tex/latex/l3experimental/xgalley/l3galley.sty
index 6f37ce57337..5776af0598a 100644
--- a/Master/texmf-dist/tex/latex/l3experimental/xgalley/l3galley.sty
+++ b/Master/texmf-dist/tex/latex/l3experimental/xgalley/l3galley.sty
@@ -47,8 +47,8 @@
 %%
 %% -----------------------------------------------------------------------
 %%
-\RequirePackage{expl3}[2016/03/26]
-\@ifpackagelater{expl3}{2016/03/26}
+\RequirePackage{expl3}[2016/04/20]
+\@ifpackagelater{expl3}{2016/04/20}
   {}
   {%
     \PackageError{l3galley}{Support package l3kernel too old}
@@ -60,7 +60,7 @@
       }%
     \endinput
   }
-\GetIdInfo$Id: l3galley.dtx 6466 2016-03-26 16:23:41Z joseph $
+\GetIdInfo$Id: l3galley.dtx 6476 2016-04-20 19:46:45Z joseph $
   {L3 Experimental galley code}
 \ProvidesExplPackage
   {\ExplFileName}{\ExplFileDate}{\ExplFileVersion}{\ExplFileDescription}
diff --git a/Master/texmf-dist/tex/latex/l3kernel/expl3-code.tex b/Master/texmf-dist/tex/latex/l3kernel/expl3-code.tex
index 95ae314b97f..795323b757e 100644
--- a/Master/texmf-dist/tex/latex/l3kernel/expl3-code.tex
+++ b/Master/texmf-dist/tex/latex/l3kernel/expl3-code.tex
@@ -82,8 +82,8 @@
 %% -----------------------------------------------------------------------
 \def\ExplFileName{expl3}%
 \def\ExplFileDescription{L3 programming layer}%
-\def\ExplFileDate{2016/03/28}%
-\def\ExplFileVersion{6468}%
+\def\ExplFileDate{2016/04/20}%
+\def\ExplFileVersion{6476}%
 \begingroup
   \def\next{\endgroup}%
   \expandafter\ifx\csname PackageError\endcsname\relax
@@ -6712,7 +6712,7 @@
 %%   prior consultation with the LaTeX3 Project.
 %%
 %% -----------------------------------------------------------------------
-\GetIdInfo$Id: l3token.dtx 6465 2016-03-26 16:15:09Z joseph $
+\GetIdInfo$Id: l3token.dtx 6470 2016-04-03 11:29:18Z joseph $
   {L3 Experimental token manipulation}
 \cs_new_protected:Npn \char_set_catcode:nn #1#2
   {
@@ -6933,7 +6933,12 @@
       \char_set_catcode_math_toggle:n { 0 }
       \tl_put_right:Nn \l__char_tmp_tl { \or: ^^@ }
       \char_set_catcode_alignment:n { 0 }
-      \tl_put_right:Nn \l__char_tmp_tl { \or: ^^@ }
+      \tl_put_right:Nn \l__char_tmp_tl
+        {
+          \or:
+            \etex_unexpanded:D \exp_after:wN
+              { \exp_after:wN ^^@ \exp_after:wN }
+        }
       \tl_put_right:Nn \l__char_tmp_tl { \or: }
       \char_set_catcode_parameter:n { 0 }
       \tl_put_right:Nn \l__char_tmp_tl { \or: ^^@ }
diff --git a/Master/texmf-dist/tex/latex/l3kernel/expl3-generic.tex b/Master/texmf-dist/tex/latex/l3kernel/expl3-generic.tex
index b2b90a338de..5e355680c6b 100644
--- a/Master/texmf-dist/tex/latex/l3kernel/expl3-generic.tex
+++ b/Master/texmf-dist/tex/latex/l3kernel/expl3-generic.tex
@@ -47,8 +47,8 @@
 %% -----------------------------------------------------------------------
 \def\ExplFileName{expl3}%
 \def\ExplFileDescription{L3 programming layer}%
-\def\ExplFileDate{2016/03/28}%
-\def\ExplFileVersion{6468}%
+\def\ExplFileDate{2016/04/20}%
+\def\ExplFileVersion{6476}%
 \let\ExplLoaderFileVersion\ExplFileVersion
 \begingroup
   \def\tempa{LaTeX2e}%
diff --git a/Master/texmf-dist/tex/latex/l3kernel/expl3.sty b/Master/texmf-dist/tex/latex/l3kernel/expl3.sty
index c6217c69805..6b11a05f308 100644
--- a/Master/texmf-dist/tex/latex/l3kernel/expl3.sty
+++ b/Master/texmf-dist/tex/latex/l3kernel/expl3.sty
@@ -47,8 +47,8 @@
 %% -----------------------------------------------------------------------
 \def\ExplFileName{expl3}%
 \def\ExplFileDescription{L3 programming layer}%
-\def\ExplFileDate{2016/03/28}%
-\def\ExplFileVersion{6468}%
+\def\ExplFileDate{2016/04/20}%
+\def\ExplFileVersion{6476}%
 \let\ExplLoaderFileVersion\ExplFileVersion
 \ProvidesPackage{\ExplFileName}
   [%
diff --git a/Master/texmf-dist/tex/latex/l3kernel/l3doc.cls b/Master/texmf-dist/tex/latex/l3kernel/l3doc.cls
index 05d51452e27..aa9ac162b60 100644
--- a/Master/texmf-dist/tex/latex/l3kernel/l3doc.cls
+++ b/Master/texmf-dist/tex/latex/l3kernel/l3doc.cls
@@ -50,7 +50,7 @@
 \let     \fileversionOld        \ExplFileVersion
 \let \filedescriptionOld        \ExplFileDescription
 \RequirePackage{expl3,xparse,calc}
-\GetIdInfo$Id: l3doc.dtx 6448 2016-03-25 12:27:53Z bruno $
+\GetIdInfo$Id: l3doc.dtx 6474 2016-04-11 18:09:21Z qinglee $
           {L3 Experimental documentation class}
 \ProvidesExplClass
   {\ExplFileName}{\ExplFileDate}{\ExplFileVersion}{\ExplFileDescription}
@@ -934,7 +934,6 @@
 \cs_new_protected:Npn \__codedoc_macro_single:n #1
   {
     \tl_set:Nn \saved@macroname {#1}
-
     \__codedoc_macro_typeset_one:n {#1}
     \exp_args:Nx \__codedoc_macro_index:n
       {
@@ -946,15 +945,15 @@
   {
     \bool_if:NF \l__codedoc_macro_aux_bool
       { \seq_gput_right:Nn \g_doc_macros_seq {#1} }
-    \hbox_set:Nn \l__codedoc_macro_index_box
-      {
-        % This box only contains targets... it seems inefficient.
-        \hbox_unpack_clear:N \l__codedoc_macro_index_box
-        \int_gincr:N \c@CodelineNo
-        \__codedoc_special_index:nn {#1} { main }
-        \DoNotIndex {#1}
-        \int_gdecr:N \c@CodelineNo
-      }
+    \hbox_set:Nw \l__codedoc_macro_index_box
+      % This box only contains targets... it seems inefficient.
+      \hbox_unpack_clear:N \l__codedoc_macro_index_box
+      \int_gincr:N \c@CodelineNo
+      \__codedoc_special_index:nn {#1} { main }
+      \DoNotIndex {#1}
+      \int_gdecr:N \c@CodelineNo
+    \exp_args:NNNo \hbox_set_end:
+      \tl_set:Nn \saved@indexname { \l__codedoc_index_key_tl }
   }
 \cs_new_protected:Npn \__codedoc_macro_typeset_one:n #1
   {
diff --git a/Master/texmf-dist/tex/latex/l3kernel/l3dvipdfmx.def b/Master/texmf-dist/tex/latex/l3kernel/l3dvipdfmx.def
index d153e3515c9..0c905c2845a 100644
--- a/Master/texmf-dist/tex/latex/l3kernel/l3dvipdfmx.def
+++ b/Master/texmf-dist/tex/latex/l3kernel/l3dvipdfmx.def
@@ -13,7 +13,7 @@
 %% 
 %% Do not distribute a modified version of this file.
 %% 
-%% File: l3drivers.dtx Copyright(C) 2011-2015 The LaTeX3 Project
+%% File: l3drivers.dtx Copyright(C) 2011-2016 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
@@ -46,7 +46,7 @@
 %%
 %% -----------------------------------------------------------------------
 %%
-\GetIdInfo$Id: l3drivers.dtx 6281 2015-11-17 07:11:52Z joseph $
+\GetIdInfo$Id: l3drivers.dtx 6472 2016-04-05 13:26:17Z joseph $
   {L3 Experimental drivers}
 \ProvidesExplFile
   {l3dvidpfmx.def}{\ExplFileDate}{\ExplFileVersion}
@@ -112,6 +112,12 @@
 \cs_new_eq:NN \__driver_box_scale_end: \__driver_state_restore:
 \tl_new:N \l__driver_current_color_tl
 \tl_set:Nn \l__driver_current_color_tl { gray~0 }
+\AtBeginDocument
+  {
+    \@ifpackageloaded { color }
+      { \tl_set:Nn \l__driver_current_color_tl { \current@color } }
+      { }
+  }
 \cs_new_protected_nopar:Npx \__driver_color_ensure_current:
   {
     \tex_special:D { color~push~\exp_not:N \l__driver_current_color_tl }
diff --git a/Master/texmf-dist/tex/latex/l3kernel/l3dvips.def b/Master/texmf-dist/tex/latex/l3kernel/l3dvips.def
index aaf20c5d37d..367bdaf2526 100644
--- a/Master/texmf-dist/tex/latex/l3kernel/l3dvips.def
+++ b/Master/texmf-dist/tex/latex/l3kernel/l3dvips.def
@@ -13,7 +13,7 @@
 %% 
 %% Do not distribute a modified version of this file.
 %% 
-%% File: l3drivers.dtx Copyright(C) 2011-2015 The LaTeX3 Project
+%% File: l3drivers.dtx Copyright(C) 2011-2016 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
@@ -46,7 +46,7 @@
 %%
 %% -----------------------------------------------------------------------
 %%
-\GetIdInfo$Id: l3drivers.dtx 6281 2015-11-17 07:11:52Z joseph $
+\GetIdInfo$Id: l3drivers.dtx 6472 2016-04-05 13:26:17Z joseph $
   {L3 Experimental drivers}
 \ProvidesExplFile
   {l3dvips.def}{\ExplFileDate}{\ExplFileVersion}
@@ -121,6 +121,12 @@
 \cs_new_eq:NN \__driver_box_scale_end: \__driver_state_restore:
 \tl_new:N \l__driver_current_color_tl
 \tl_set:Nn \l__driver_current_color_tl { gray~0 }
+\AtBeginDocument
+  {
+    \@ifpackageloaded { color }
+      { \tl_set:Nn \l__driver_current_color_tl { \current@color } }
+      { }
+  }
 \cs_new_protected_nopar:Npx \__driver_color_ensure_current:
   {
     \tex_special:D { color~push~\exp_not:N \l__driver_current_color_tl }
diff --git a/Master/texmf-dist/tex/latex/l3kernel/l3pdfmode.def b/Master/texmf-dist/tex/latex/l3kernel/l3pdfmode.def
index fd28cee79c9..045ebf399e7 100644
--- a/Master/texmf-dist/tex/latex/l3kernel/l3pdfmode.def
+++ b/Master/texmf-dist/tex/latex/l3kernel/l3pdfmode.def
@@ -13,7 +13,7 @@
 %% 
 %% Do not distribute a modified version of this file.
 %% 
-%% File: l3drivers.dtx Copyright(C) 2011-2015 The LaTeX3 Project
+%% File: l3drivers.dtx Copyright(C) 2011-2016 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
@@ -46,7 +46,7 @@
 %%
 %% -----------------------------------------------------------------------
 %%
-\GetIdInfo$Id: l3drivers.dtx 6281 2015-11-17 07:11:52Z joseph $
+\GetIdInfo$Id: l3drivers.dtx 6472 2016-04-05 13:26:17Z joseph $
   {L3 Experimental drivers}
 \ProvidesExplFile
   {l3pdfmode.def}{\ExplFileDate}{\ExplFileVersion}
@@ -130,6 +130,12 @@
 \cs_new_eq:NN \__driver_box_scale_end: \__driver_state_restore:
 \tl_new:N \l__driver_current_color_tl
 \tl_set:Nn \l__driver_current_color_tl { 0~g~0~G }
+\AtBeginDocument
+  {
+    \@ifpackageloaded { color }
+      { \tl_set:Nn \l__driver_current_color_tl { \current@color } }
+      { }
+  }
 \int_new:N \l__driver_color_stack_int
 \cs_new_protected_nopar:Npx \__driver_color_ensure_current:
   {
diff --git a/Master/texmf-dist/tex/latex/l3kernel/l3xdvipdfmx.def b/Master/texmf-dist/tex/latex/l3kernel/l3xdvipdfmx.def
index dbbc07d369c..50fa2f3fca0 100644
--- a/Master/texmf-dist/tex/latex/l3kernel/l3xdvipdfmx.def
+++ b/Master/texmf-dist/tex/latex/l3kernel/l3xdvipdfmx.def
@@ -13,7 +13,7 @@
 %% 
 %% Do not distribute a modified version of this file.
 %% 
-%% File: l3drivers.dtx Copyright(C) 2011-2015 The LaTeX3 Project
+%% File: l3drivers.dtx Copyright(C) 2011-2016 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
@@ -46,7 +46,7 @@
 %%
 %% -----------------------------------------------------------------------
 %%
-\GetIdInfo$Id: l3drivers.dtx 6281 2015-11-17 07:11:52Z joseph $
+\GetIdInfo$Id: l3drivers.dtx 6472 2016-04-05 13:26:17Z joseph $
   {L3 Experimental drivers}
 \ProvidesExplFile
   {l3xdvidpfmx.def}{\ExplFileDate}{\ExplFileVersion}
@@ -112,6 +112,12 @@
 \cs_new_eq:NN \__driver_box_scale_end: \__driver_state_restore:
 \tl_new:N \l__driver_current_color_tl
 \tl_set:Nn \l__driver_current_color_tl { gray~0 }
+\AtBeginDocument
+  {
+    \@ifpackageloaded { color }
+      { \tl_set:Nn \l__driver_current_color_tl { \current@color } }
+      { }
+  }
 \cs_new_protected_nopar:Npx \__driver_color_ensure_current:
   {
     \tex_special:D { color~push~\exp_not:N \l__driver_current_color_tl }
diff --git a/Master/texmf-dist/tex/latex/l3packages/l3keys2e/l3keys2e.sty b/Master/texmf-dist/tex/latex/l3packages/l3keys2e/l3keys2e.sty
index e1ba2631b5d..b3641934596 100644
--- a/Master/texmf-dist/tex/latex/l3packages/l3keys2e/l3keys2e.sty
+++ b/Master/texmf-dist/tex/latex/l3packages/l3keys2e/l3keys2e.sty
@@ -46,8 +46,8 @@
 %%
 %% -----------------------------------------------------------------------
 %%
-\RequirePackage{expl3}[2016/03/28]
-\@ifpackagelater{expl3}{2016/03/28}
+\RequirePackage{expl3}[2016/04/20]
+\@ifpackagelater{expl3}{2016/04/20}
   {}
   {%
     \PackageError{l3keys2e}{Support package l3kernel too old}
@@ -61,8 +61,8 @@
   }
 \def\ExplFileName{l3keys2e}
 \def\ExplFileDescription{LaTeX2e option processing using LaTeX3 keys}
-\def\ExplFileDate{2016/03/28}
-\def\ExplFileVersion{6468}
+\def\ExplFileDate{2016/04/20}
+\def\ExplFileVersion{6476}
 \ProvidesExplPackage
   {\ExplFileName}{\ExplFileDate}{\ExplFileVersion}{\ExplFileDescription}
 \cs_generate_variant:Nn \clist_put_right:Nn { Nv }
diff --git a/Master/texmf-dist/tex/latex/l3packages/xfrac/xfrac.sty b/Master/texmf-dist/tex/latex/l3packages/xfrac/xfrac.sty
index 26c802d6d84..74818d1b55a 100644
--- a/Master/texmf-dist/tex/latex/l3packages/xfrac/xfrac.sty
+++ b/Master/texmf-dist/tex/latex/l3packages/xfrac/xfrac.sty
@@ -47,8 +47,8 @@
 %%
 %% -----------------------------------------------------------------------
 %%
-\RequirePackage{expl3}[2016/03/28]
-\@ifpackagelater{expl3}{2016/03/28}
+\RequirePackage{expl3}[2016/04/20]
+\@ifpackagelater{expl3}{2016/04/20}
   {}
   {%
     \PackageError{xfrac}{Support package l3kernel too old}
@@ -63,8 +63,8 @@
 \RequirePackage{amstext,graphicx,l3keys2e,textcomp,xparse,xtemplate}
 \def\ExplFileName{xfrac}
 \def\ExplFileDescription{L3 Experimental split-level fractions}
-\def\ExplFileDate{2016/03/28}
-\def\ExplFileVersion{6468}
+\def\ExplFileDate{2016/04/20}
+\def\ExplFileVersion{6476}
 \ProvidesExplPackage
   {\ExplFileName}{\ExplFileDate}{\ExplFileVersion}{\ExplFileDescription}
 \keys_define:nn { xfrac }
diff --git a/Master/texmf-dist/tex/latex/l3packages/xparse/xparse.sty b/Master/texmf-dist/tex/latex/l3packages/xparse/xparse.sty
index bea7493670d..05f8d8910be 100644
--- a/Master/texmf-dist/tex/latex/l3packages/xparse/xparse.sty
+++ b/Master/texmf-dist/tex/latex/l3packages/xparse/xparse.sty
@@ -50,8 +50,8 @@
 %%
 %% -----------------------------------------------------------------------
 %%
-\RequirePackage{expl3}[2016/03/28]
-\@ifpackagelater{expl3}{2016/03/28}
+\RequirePackage{expl3}[2016/04/20]
+\@ifpackagelater{expl3}{2016/04/20}
   {}
   {%
     \PackageError{xparse}{Support package l3kernel too old}
@@ -65,8 +65,8 @@
   }
 \def\ExplFileName{xparse}
 \def\ExplFileDescription{L3 Experimental document command parser}
-\def\ExplFileDate{2016/03/28}
-\def\ExplFileVersion{6468}
+\def\ExplFileDate{2016/04/20}
+\def\ExplFileVersion{6476}
 \ProvidesExplPackage
   {\ExplFileName}{\ExplFileDate}{\ExplFileVersion}{\ExplFileDescription}
 \tl_const:Nx \c__xparse_no_value_tl
@@ -210,17 +210,17 @@
   {
     \__xparse_declare_cmd_internal:cnx { environment~ #1 } {#2}
       {
-        \cs_set_protected_nopar:Npx \exp_not:c { environment~ #1 ~end~aux }
+        \cs_set_nopar:Npx \exp_not:c { environment~ #1 ~end~aux }
           {
-            \exp_not:c { environment~ #1~end~aux~ }
+            \exp_not:N \exp_not:N \exp_not:c { environment~ #1~end~aux~ }
             \exp_not:n { \tl_tail:N \l__xparse_args_tl }
           }
         \exp_not:n {#3}
       }
-    \cs_set_protected_nopar:cpx { environment~ #1 ~end }
+    \cs_set_nopar:cpx { environment~ #1 ~end }
       { \exp_not:c { environment~ #1 ~end~aux } }
     \cs_generate_from_arg_count:cNnn
-      { environment~ #1 ~end~aux~ } \cs_set_protected:Npn
+      { environment~ #1 ~end~aux~ } \cs_set:Npn
       \l__xparse_current_arg_int {#4}
     \cs_set_eq:cc {#1}       { environment~ #1 }
     \cs_set_eq:cc { end #1 } { environment~ #1 ~end }
@@ -723,13 +723,8 @@
           }
         \token_if_eq_catcode:NNTF + #1
           {
-            \group_begin:
-              \char_set_lccode:nn { `A } { `#1 }
-              \tex_lowercase:D
-                {
-                  \group_end:
-                  \l__xparse_fn_tl A
-                }
+            \exp_after:wN \exp_after:wN \exp_after:wN
+              \l__xparse_fn_tl \char_generate:nn { `#1 } { 11 }
           }
           {
             \exp_after:wN \l__xparse_fn_tl
diff --git a/Master/texmf-dist/tex/latex/l3packages/xtemplate/xtemplate.sty b/Master/texmf-dist/tex/latex/l3packages/xtemplate/xtemplate.sty
index ad5d893bfb9..b54dc121a6d 100644
--- a/Master/texmf-dist/tex/latex/l3packages/xtemplate/xtemplate.sty
+++ b/Master/texmf-dist/tex/latex/l3packages/xtemplate/xtemplate.sty
@@ -50,8 +50,8 @@
 %%
 %% -----------------------------------------------------------------------
 %%
-\RequirePackage{expl3}[2016/03/28]
-\@ifpackagelater{expl3}{2016/03/28}
+\RequirePackage{expl3}[2016/04/20]
+\@ifpackagelater{expl3}{2016/04/20}
   {}
   {%
     \PackageError{xtemplate}{Support package l3kernel too old}
@@ -65,8 +65,8 @@
   }
 \def\ExplFileName{xtemplate}
 \def\ExplFileDescription{L3 Experimental prototype document functions}
-\def\ExplFileDate{2016/03/28}
-\def\ExplFileVersion{6468}
+\def\ExplFileDate{2016/04/20}
+\def\ExplFileVersion{6476}
 \ProvidesExplPackage
   {\ExplFileName}{\ExplFileDate}{\ExplFileVersion}{\ExplFileDescription}
 \tl_const:Nn \c__xtemplate_code_root_tl      { template~code~>~ }