l3kernel (11feb20)

git-svn-id: svn://tug.org/texlive/trunk@53758 c570f23f-e606-0410-a88d-b1316a301751

55 files changed, 179 insertions, 85 deletions

diff --git a/Master/texmf-dist/source/latex/l3kernel/expl3.dtx b/Master/texmf-dist/source/latex/l3kernel/expl3.dtx
index babef7f652f..8e750ede911 100644
--- a/Master/texmf-dist/source/latex/l3kernel/expl3.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/expl3.dtx
@@ -24,7 +24,7 @@
 %
 %<*driver|generic|package|2ekernel>
 %</driver|generic|package|2ekernel>
-\def\ExplFileDate{2020-02-08}%
+\def\ExplFileDate{2020-02-11}%
 %<*driver>
 \documentclass[full]{l3doc}
 \usepackage{graphicx}
@@ -51,7 +51,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3alloc.dtx b/Master/texmf-dist/source/latex/l3kernel/l3alloc.dtx
index 9a3b5177cb0..d9f5640f976 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3alloc.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3alloc.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3basics.dtx b/Master/texmf-dist/source/latex/l3kernel/l3basics.dtx
index 8f49503a0e0..d03785c5dee 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3basics.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3basics.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3bootstrap.dtx b/Master/texmf-dist/source/latex/l3kernel/l3bootstrap.dtx
index 6ae17167e28..cecfdeeff98 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3bootstrap.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3bootstrap.dtx
@@ -2,7 +2,7 @@
 %
 %% File: l3bootstrap.dtx
 %
-% Copyright (C) 2011-2019 The LaTeX3 project
+% Copyright (C) 2011-2020 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
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3box.dtx b/Master/texmf-dist/source/latex/l3kernel/l3box.dtx
index c9024402d4d..13a870890df 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3box.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3box.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3candidates.dtx b/Master/texmf-dist/source/latex/l3kernel/l3candidates.dtx
index d6877849c57..c490fc4e3e1 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3candidates.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3candidates.dtx
@@ -44,7 +44,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3clist.dtx b/Master/texmf-dist/source/latex/l3kernel/l3clist.dtx
index f50ff2bc9af..97a1da29cfe 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3clist.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3clist.dtx
@@ -44,7 +44,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3coffins.dtx b/Master/texmf-dist/source/latex/l3kernel/l3coffins.dtx
index 532a8b251a8..e8d23fd991b 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3coffins.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3coffins.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3color-base.dtx b/Master/texmf-dist/source/latex/l3kernel/l3color-base.dtx
index b190d376f4f..bc4a100cad7 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3color-base.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3color-base.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3debug.dtx b/Master/texmf-dist/source/latex/l3kernel/l3debug.dtx
index 80762d306f4..1b14f809dea 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3debug.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3debug.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3deprecation.dtx b/Master/texmf-dist/source/latex/l3kernel/l3deprecation.dtx
index 5d11e7a4ef7..21d6709a0ac 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3deprecation.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3deprecation.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3doc.dtx b/Master/texmf-dist/source/latex/l3kernel/l3doc.dtx
index 7a00967fb37..4ba2ebd5f07 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3doc.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3doc.dtx
@@ -31,7 +31,7 @@
 \askforoverwritefalse
 \preamble
 
-Copyright (C) 1990-2017,2019,2020 The LaTeX3 Project
+Copyright (C) 1990-2020 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
@@ -79,7 +79,7 @@ and all files in that bundle must be distributed together.
 %
 % \title{The \cls{l3doc} class}
 % \author{\Team}
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 % \maketitle
 % \tableofcontents
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3docstrip.dtx b/Master/texmf-dist/source/latex/l3kernel/l3docstrip.dtx
index d0e19f8a7c8..6b160328a54 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3docstrip.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3docstrip.dtx
@@ -63,7 +63,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3expan.dtx b/Master/texmf-dist/source/latex/l3kernel/l3expan.dtx
index 96dada827dd..ce01cac3260 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3expan.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3expan.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3file.dtx b/Master/texmf-dist/source/latex/l3kernel/l3file.dtx
index 6716358b3c8..978b6d78c58 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3file.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3file.dtx
@@ -44,7 +44,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3final.dtx b/Master/texmf-dist/source/latex/l3kernel/l3final.dtx
index 92f3b10a84a..07d59e992fa 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3final.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3final.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3flag.dtx b/Master/texmf-dist/source/latex/l3kernel/l3flag.dtx
index 9b780c36d70..91c48a52d08 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3flag.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3flag.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-assign.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-assign.dtx
index 778fe9dbd64..4dbc9d8ce23 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-assign.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-assign.dtx
@@ -2,7 +2,7 @@
 %
 %% File: l3fp-assign.dtx
 %
-% Copyright (C) 2011-2019 The LaTeX3 project
+% Copyright (C) 2011-2020 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
@@ -40,7 +40,7 @@
 %          {latex-team@latex-project.org}^^A
 %    }^^A
 % }
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 % \maketitle
 %
 % \begin{documentation}
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-aux.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-aux.dtx
index 25e6201161d..4137dde05bb 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-aux.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-aux.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-basics.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-basics.dtx
index 402fcb60eff..aba86520eb8 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-basics.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-basics.dtx
@@ -40,7 +40,7 @@
 %          {latex-team@latex-project.org}^^A
 %    }^^A
 % }
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-convert.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-convert.dtx
index 74462f5fa26..1f67ce5a0dc 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-convert.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-convert.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-expo.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-expo.dtx
index da844067555..f4b1fd9a16f 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-expo.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-expo.dtx
@@ -40,7 +40,7 @@
 %          {latex-team@latex-project.org}^^A
 %    }^^A
 % }
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-extended.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-extended.dtx
index 91f9e03d1c1..fe67c391f43 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-extended.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-extended.dtx
@@ -40,7 +40,7 @@
 %          {latex-team@latex-project.org}^^A
 %    }^^A
 % }
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-logic.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-logic.dtx
index c2805a4ea81..17fb80e10cf 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-logic.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-logic.dtx
@@ -40,7 +40,7 @@
 %          {latex-team@latex-project.org}^^A
 %    }^^A
 % }
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-parse.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-parse.dtx
index a798e341317..75d1f9db4cd 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-parse.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-parse.dtx
@@ -40,7 +40,7 @@
 %          {latex-team@latex-project.org}^^A
 %    }^^A
 % }
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-random.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-random.dtx
index 9538e327f24..99bf9e5d979 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-random.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-random.dtx
@@ -40,7 +40,7 @@
 %          {latex-team@latex-project.org}^^A
 %    }^^A
 % }
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-round.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-round.dtx
index dd0ed9a63df..fbcd25c2f04 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-round.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-round.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-traps.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-traps.dtx
index a05bf42c872..9defc471b74 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-traps.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-traps.dtx
@@ -40,7 +40,7 @@
 %          {latex-team@latex-project.org}^^A
 %    }^^A
 % }
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 % \maketitle
 %
 % \begin{documentation}
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-trig.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-trig.dtx
index 3988dbe455c..38a91e91c32 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-trig.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-trig.dtx
@@ -40,7 +40,7 @@
 %          {latex-team@latex-project.org}^^A
 %    }^^A
 % }
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp.dtx
index 22514c2959e..ea1d998bc7a 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp.dtx
@@ -49,7 +49,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fparray.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fparray.dtx
index c5f9d80b498..d9e82ecf146 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fparray.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fparray.dtx
@@ -44,7 +44,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3int.dtx b/Master/texmf-dist/source/latex/l3kernel/l3int.dtx
index f1b64fcbe18..ccf83c2be41 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3int.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3int.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3intarray.dtx b/Master/texmf-dist/source/latex/l3kernel/l3intarray.dtx
index 0ba79b13891..bff15a9db04 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3intarray.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3intarray.dtx
@@ -44,7 +44,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3kernel-functions.dtx b/Master/texmf-dist/source/latex/l3kernel/l3kernel-functions.dtx
index a49e49d62fb..b31ebb26fa3 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3kernel-functions.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3kernel-functions.dtx
@@ -2,7 +2,7 @@
 %
 %% File: l3kernel-functions.dtx
 %
-% Copyright (C) 2018-2019 The LaTeX3 project
+% Copyright (C) 2018-2020 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
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3keys.dtx b/Master/texmf-dist/source/latex/l3kernel/l3keys.dtx
index d172a1a041c..eedd06ad24f 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3keys.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3keys.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
@@ -243,6 +243,20 @@
 %   \meta{value} given for the \meta{key}.
 % \end{function}
 %
+% \begin{function}[added = 2020-01-11]
+%   {
+%     .cs_set:Np, .cs_set:cp,
+%     .cs_set_protected:Np, .cs_set_protected:cp,
+%     .cs_gset:Np, .cs_gset:cp,
+%     .cs_gset_protected:Np, .cs_gset_protected:cp,
+%   }
+%   \begin{syntax}
+%     \meta{key} .cs_set:Np = \meta{control sequence} \meta{arg.~spec.}
+%   \end{syntax}
+%   Defines \meta{key} to set \meta{control sequence} to have \meta{arg.~spec.}
+%   and replacement text \meta{value}.
+% \end{function}
+%
 % \begin{function}[updated = 2013-07-09]
 %   {.default:n, .default:V, .default:o, .default:x}
 %   \begin{syntax}
@@ -1588,6 +1602,21 @@
 %    \end{macrocode}
 % \end{macro}
 %
+% \begin{macro}{\@@_cs_set:NNpn, \@@_cs_set:Ncpn}
+%   Creating control sequences is a bit more tricky than other cases as
+%   we need to pick up the |p| argument. To make the internals look clearer,
+%   the trailing |n| argument here is just for appearance.
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_cs_set:NNpn #1#2#3#
+  {
+    \cs_set_protected:cpx { \c_@@_code_root_str \l_keys_path_str } ##1
+      { #1 \exp_not:N #2 \exp_not:n {#3} {##1} }
+    \use_none:n
+  }
+\cs_generate_variant:Nn \@@_cs_set:NNpn { Nc }
+%    \end{macrocode}
+% \end{macro}
+%
 % \begin{macro}{\@@_default_set:n}
 %   Setting a default value is easy. These are stored using \cs{cs_set:cpx} as this
 %   avoids any worries about whether a token list exists.
@@ -1898,6 +1927,31 @@
 % \end{macro}
 % \end{macro}
 %
+% \begin{macro}
+%   {.cs_set:Np, .cs_set:cp, .cs_set_protected:Np, .cs_set_protected:cp}
+% \begin{macro}
+%   {.cs_gset:Np, .cs_gset:cp, .cs_gset_protected:Np, .cs_gset_protected:cp}
+%    \begin{macrocode}
+\cs_new_protected:cpn { \c_@@_props_root_str .cs_set:Np } #1
+  { \@@_cs_set:NNpn \cs_set:Npn #1 { } }
+\cs_new_protected:cpn { \c_@@_props_root_str .cs_set:cp } #1
+  { \@@_cs_set:Ncpn \cs_set:Npn #1 { } }
+\cs_new_protected:cpn { \c_@@_props_root_str .cs_set_protected:Np } #1
+  { \@@_cs_set:NNpn \cs_set_protected:Npn #1 { } }
+\cs_new_protected:cpn { \c_@@_props_root_str .cs_set_protected:cp } #1
+  { \@@_cs_set:Ncpn \cs_set_protected:Npn #1 { } }
+\cs_new_protected:cpn { \c_@@_props_root_str .cs_gset:Np } #1
+  { \@@_cs_set:NNpn \cs_gset:Npn #1 { } }
+\cs_new_protected:cpn { \c_@@_props_root_str .cs_gset:cp } #1
+  { \@@_cs_set:Ncpn \cs_gset:Npn #1 { } }
+\cs_new_protected:cpn { \c_@@_props_root_str .cs_gset_protected:Np } #1
+  { \@@_cs_set:NNpn \cs_gset_protected:Npn #1 { } }
+\cs_new_protected:cpn { \c_@@_props_root_str .cs_gset_protected:cp } #1
+  { \@@_cs_set:Ncpn \cs_gset_protected:Npn #1 { } }
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
 % \begin{macro}{.default:n, .default:V, .default:o, .default:x}
 %   Expansion is left to the internal functions.
 %    \begin{macrocode}
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3legacy.dtx b/Master/texmf-dist/source/latex/l3kernel/l3legacy.dtx
index 140f678de4f..b1732bbc997 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3legacy.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3legacy.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3luatex.dtx b/Master/texmf-dist/source/latex/l3kernel/l3luatex.dtx
index 4e248880c32..b002ea7dfee 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3luatex.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3luatex.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3msg.dtx b/Master/texmf-dist/source/latex/l3kernel/l3msg.dtx
index 46571537f4f..89155d2ae9e 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3msg.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3msg.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3names.dtx b/Master/texmf-dist/source/latex/l3kernel/l3names.dtx
index c835f888afc..93f1d4904cb 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3names.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3names.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3prg.dtx b/Master/texmf-dist/source/latex/l3kernel/l3prg.dtx
index e6b2b228143..5a6cb862931 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3prg.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3prg.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3prop.dtx b/Master/texmf-dist/source/latex/l3kernel/l3prop.dtx
index 53f4a3f5efa..5206bb972e6 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3prop.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3prop.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3quark.dtx b/Master/texmf-dist/source/latex/l3kernel/l3quark.dtx
index aa5e0059c8d..f5cef864afa 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3quark.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3quark.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3regex.dtx b/Master/texmf-dist/source/latex/l3kernel/l3regex.dtx
index d754599b20e..2576bfdcbe8 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3regex.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3regex.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3seq.dtx b/Master/texmf-dist/source/latex/l3kernel/l3seq.dtx
index 3e3bd7dd23c..38a051fdb60 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3seq.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3seq.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3skip.dtx b/Master/texmf-dist/source/latex/l3kernel/l3skip.dtx
index 0346f67316c..6003981e298 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3skip.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3skip.dtx
@@ -44,7 +44,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3sort.dtx b/Master/texmf-dist/source/latex/l3kernel/l3sort.dtx
index a0d100e2f28..95b676436cf 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3sort.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3sort.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3str-convert.dtx b/Master/texmf-dist/source/latex/l3kernel/l3str-convert.dtx
index 64b3500fee5..a064fdd17e7 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3str-convert.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3str-convert.dtx
@@ -44,7 +44,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3str.dtx b/Master/texmf-dist/source/latex/l3kernel/l3str.dtx
index 92c86e36a98..f215feca488 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3str.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3str.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3sys.dtx b/Master/texmf-dist/source/latex/l3kernel/l3sys.dtx
index fcf809f839c..58665dab831 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3sys.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3sys.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3text-case.dtx b/Master/texmf-dist/source/latex/l3kernel/l3text-case.dtx
index e48d969759b..4b39343bd42 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3text-case.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3text-case.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
@@ -1412,6 +1412,38 @@
 \group_end:
 %    \end{macrocode}
 %
+% To deal with possible encoding-specific extensions to \tn{@uclclist},
+% we check at the end of the preamble. This will therefore only apply
+% to \LaTeXe{} package mode.
+%    \begin{macrocode}
+\cs_if_exist:cT { @uclclist }
+  {
+    \AtBeginDocument
+      {
+        \group_begin:
+          \cs_set_protected:Npn \@@_change_case_setup:NN #1#2
+            {
+              \quark_if_recursion_tail_stop:N #1
+              \cs_if_exist:cF { c_@@_uppercase_ \token_to_str:N #1 _tl }
+                {
+                  \tl_const:cn { c_@@_uppercase_ \token_to_str:N #1 _tl }
+                    { #2 }
+                }
+              \cs_if_exist:cF { c_@@_lowercase_ \token_to_str:N #2 _tl }
+                {
+                  \tl_const:cn { c_@@_lowercase_ \token_to_str:N #2 _tl }
+                    { #1 }
+                }
+              \@@_change_case_setup:NN
+            }
+          \exp_after:wN \@@_change_case_setup:NN \@uclclist
+          \q_recursion_tail ?
+          \q_recursion_stop
+        \group_end:
+      }
+  }
+%    \end{macrocode}
+%
 %    \begin{macrocode}
 %</initex|package>
 %    \end{macrocode}
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3text.dtx b/Master/texmf-dist/source/latex/l3kernel/l3text.dtx
index 72f91af2f13..8940ce5af0c 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3text.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3text.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
@@ -74,7 +74,7 @@
 %   including implicit groups, are converted to their explicit equivalent.
 %   Any commands listed in \cs{l_text_expand_exclude_tl},
 %   \cs{l_text_accents_tl} and \cs{l_text_letterlike_tl} are excluded from
-%   expansion
+%   expansion.
 % \end{function}
 %
 % \begin{function}[added = 2020-01-22]
@@ -464,7 +464,7 @@
 \tl_new:N \l_text_expand_exclude_tl
 %<*package>
 \tl_set:Nn \l_text_expand_exclude_tl
-  { \cite \label \ref }
+  { \begin \cite \end \label \ref }
 %</package>
 %    \end{macrocode}
 % \end{variable}
@@ -528,11 +528,9 @@
 % \begin{macro}[EXP]{\@@_expand_exclude:Nn}
 % \begin{macro}[EXP]{\@@_expand_letterlike:N}
 % \begin{macro}[EXP]{\@@_expand_letterlike:NN}
-% \begin{macro}[EXP]
-%   {
-%     \@@_expand_cs:N       ,
-%     \@@_expand_protect:N
-%   }
+% \begin{macro}[EXP]{\@@_expand_cs:N, \@@_expand_encoding:N}
+% \begin{macro}[EXP]{\@@_expand_encoding_escape:N}
+% \begin{macro}[EXP]{\@@_expand_protect:N}
 % \begin{macro}[EXP]{\@@_expand_protect:nN}
 % \begin{macro}[EXP]{\@@_expand_protect:Nw}
 % \begin{macro}[EXP]{\@@_expand_replace:N}
@@ -846,11 +844,15 @@
 %   the \cs{protect} might be explicit, in which case we need to leave it alone
 %   if it's required.
 %    \begin{macrocode}
-\cs_new:Npn \@@_expand_cs:N #1
+\cs_new:Npx \@@_expand_cs:N #1
   {
-    \str_if_eq:nnTF {#1} { \protect }
-      { \@@_expand_protect:N }
-      { \@@_expand_replace:N #1 }
+    \exp_not:N \str_if_eq:nnTF {#1} { \exp_not:N \protect }
+      { \exp_not:N \@@_expand_protect:N }
+      {
+        \cs_if_exist:cTF { @current@cmd }
+          { \exp_not:N \@@_expand_encoding:N #1 }
+          { \exp_not:N \@@_expand_replace:N #1 }
+      }
   }
 \cs_new:Npn \@@_expand_protect:N #1
   {
@@ -871,6 +873,23 @@
     \@@_expand_loop:w
   }
 %    \end{macrocode}
+%   Deal with encoding-specific commands
+%    \begin{macrocode}
+\cs_new:Npn \@@_expand_encoding:N #1
+  {
+    \cs_if_eq:NNTF #1 \@current@cmd
+      { \exp_after:wN \@@_expand_loop:w \@@_expand_encoding_escape:NN }
+      {
+        \cs_if_eq:NNTF #1 \@changed@cmd
+          {
+            \exp_after:wN \@@_expand_loop:w
+              \@@_expand_encoding_escape:NN
+          }
+          { \@@_expand_replace:N #1 }
+      }
+  }
+\cs_new:Npn \@@_expand_encoding_escape:NN #1#2 { \exp_not:n {#1} }
+%    \end{macrocode}
 %   See if there is a dedicated replacement, and if there is, insert it.
 %    \begin{macrocode}
 \cs_new:Npn \@@_expand_replace:N #1
@@ -943,13 +962,15 @@
 % \end{macro}
 % \end{macro}
 % \end{macro}
+% \end{macro}
+% \end{macro}
 %
 % \begin{macro}
 %   {
 %     \text_declare_expand_equivalent:Nn ,
 %     \text_declare_expand_equivalent:cn
 %   }
-%  Create equivalents to allow replacement. 
+%  Create equivalents to allow replacement.
 %    \begin{macrocode}
 \cs_new_protected:Npn \text_declare_expand_equivalent:Nn #1#2
   {
@@ -960,19 +981,6 @@
 %    \end{macrocode}
 % \end{macro}
 %
-% \begin{macro}[EXP]{\@@_expand_textcomp:NN}
-%   Filter out \pkg{textcomp}-like commands.
-%    \begin{macrocode}
-%<*package>
-\cs_new:Npn \@@_expand_textcomp:NN #1#2 { \exp_not:n {#1} }
-\text_declare_expand_equivalent:cn { ?-cmd }  { \@@_expand_textcomp:NN }
-\text_declare_expand_equivalent:cn { T1-cmd }  { \@@_expand_textcomp:NN }
-\text_declare_expand_equivalent:cn { TS1-cmd } { \@@_expand_textcomp:NN }
-\text_declare_expand_equivalent:cn { TU-cmd }  { \@@_expand_textcomp:NN }
-%</package>
-%    \end{macrocode}
-% \end{macro}
-%
 %    \begin{macrocode}
 %</initex|package>
 %    \end{macrocode}
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3tl-analysis.dtx b/Master/texmf-dist/source/latex/l3kernel/l3tl-analysis.dtx
index 7e29a8a3a96..23d8bc5fe0c 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3tl-analysis.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3tl-analysis.dtx
@@ -44,7 +44,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3tl.dtx b/Master/texmf-dist/source/latex/l3kernel/l3tl.dtx
index 0d134636343..084875362ee 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3tl.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3tl.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3token.dtx b/Master/texmf-dist/source/latex/l3kernel/l3token.dtx
index 2bafe7fb427..bf0f21a7618 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3token.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3token.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3unicode.dtx b/Master/texmf-dist/source/latex/l3kernel/l3unicode.dtx
index 63ea9f7a4e8..8613e01612d 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3unicode.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3unicode.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-02-08}
+% \date{Released 2020-02-11}
 %
 % \maketitle
 %