l3kernel (21jan22)

git-svn-id: svn://tug.org/texlive/trunk@61685 c570f23f-e606-0410-a88d-b1316a301751

56 files changed, 87 insertions, 77 deletions

diff --git a/Master/texmf-dist/source/latex/l3kernel/expl3.dtx b/Master/texmf-dist/source/latex/l3kernel/expl3.dtx
index b8cc780f0c9..fb9691782b7 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{2022-01-12}%
+\def\ExplFileDate{2022-01-21}%
 %<*driver>
 \documentclass[full]{l3doc}
 \usepackage{graphicx}
@@ -51,7 +51,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3basics.dtx b/Master/texmf-dist/source/latex/l3kernel/l3basics.dtx
index d986ce162d2..48090699261 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3bootstrap.dtx b/Master/texmf-dist/source/latex/l3kernel/l3bootstrap.dtx
index 56aa0da33ee..1ab749a8c70 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3bootstrap.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3bootstrap.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3box.dtx b/Master/texmf-dist/source/latex/l3kernel/l3box.dtx
index 7159cb08c4e..4d62c1f5c6c 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3candidates.dtx b/Master/texmf-dist/source/latex/l3kernel/l3candidates.dtx
index df95ed2051e..981b4404fc3 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
@@ -681,14 +681,6 @@
 % \end{verbatim}
 % \end{function}
 %
-% \begin{function}[added = 2018-10-01]{\peek_remove_spaces:n}
-%   \begin{syntax}
-%     \cs{peek_remove_spaces:n} \Arg{code}
-%   \end{syntax}
-%   Removes explicit and implicit space tokens (category code~$10$ and
-%   character code~$32$) from the input stream, then inserts \meta{code}.
-% \end{function}
-%
 % \end{documentation}
 %
 % \begin{implementation}
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3cctab.dtx b/Master/texmf-dist/source/latex/l3kernel/l3cctab.dtx
index 4c74e3bde53..57586f9fdf6 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3cctab.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3cctab.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3clist.dtx b/Master/texmf-dist/source/latex/l3kernel/l3clist.dtx
index c91922e6a76..a65691b568b 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3coffins.dtx b/Master/texmf-dist/source/latex/l3kernel/l3coffins.dtx
index 38e9cf23399..53a481f7a52 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3color.dtx b/Master/texmf-dist/source/latex/l3kernel/l3color.dtx
index c6c8eb32625..cdd2f31ac6d 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3color.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3color.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
@@ -600,12 +600,17 @@
 %
 % \begin{macro}[TF, EXP]{\@@_if_defined:n}
 %   A simple wrapper to avoid needing to have the lookup repeated in too many
-%   places.
+%   places.To guard against a color created in a group, we need to test for
+%   entries in the |prop|.
 %    \begin{macrocode}
 \prg_new_conditional:Npnn \@@_if_defined:n #1 { T, F, TF }
   {
     \prop_if_exist:cTF { l_@@_named_ #1 _prop }
-      \prg_return_true:
+      {
+        \prop_if_empty:cTF { l_@@_named_ #1 _prop }
+          \prg_return_false:
+          \prg_return_true:
+      }
       \prg_return_false:
   }
 %    \end{macrocode}
@@ -795,7 +800,7 @@
 %    \begin{macrocode}
 \cs_new_protected:Npn \@@_parse_aux:nN #1#2
   {
-    \tl_if_exist:cTF { l_@@_named_ #1 _prop }
+    \@@_if_defined:nTF {#1}
       { \@@_parse_set_eq:Nn #2 {#1} }
       { \@@_parse:Nw #2#1 ! \s_@@_stop }
     \@@_check_model:N #2
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3debug.dtx b/Master/texmf-dist/source/latex/l3kernel/l3debug.dtx
index 04fee8a23c7..4743ffc2c0f 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3deprecation.dtx b/Master/texmf-dist/source/latex/l3kernel/l3deprecation.dtx
index f4123a42c2c..86168a5fd2e 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3doc.dtx b/Master/texmf-dist/source/latex/l3kernel/l3doc.dtx
index eb67bd70b38..bd63683b356 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3doc.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3doc.dtx
@@ -61,7 +61,7 @@ and all files in that bundle must be distributed together.
 %</driver|class>
 %
 %<*driver>
-\ProvidesFile{l3doc.dtx}[2020/08/21 L3 Experimental documentation class]
+\ProvidesFile{l3doc.dtx}[2022/01/12 L3 Experimental documentation class]
 \documentclass{l3doc}
 \usepackage{framed,lipsum}
 \begin{document}
@@ -72,14 +72,14 @@ and all files in that bundle must be distributed together.
 % This isn't included in the typeset documentation because it's a bit
 % ugly:
 %<*class>
-\ProvidesExplClass{l3doc}{2018-04-30}{}
+\ProvidesExplClass{l3doc}{2022-01-12}{}
   {L3 Experimental documentation class}
 %</class>
 % \fi
 %
 % \title{The \cls{l3doc} class}
 % \author{\Team}
-% \date{Released 2022-01-12}
+% \date{Released 2022-01-21}
 % \maketitle
 % \tableofcontents
 %
@@ -3610,7 +3610,7 @@ and all files in that bundle must be distributed together.
 % into \pkg{expl3} syntax. New features are added in various places.
 %
 % \begin{macro}
-%   {\StopEventually, \Finale, \AlsoImplementation, \OnlyDescription}
+%   {\StopEventually, \MaybeStop, \Finale, \AlsoImplementation, \OnlyDescription}
 % \begin{variable}{\g_@@_finale_tl}
 %   TODO: remove these four commands altogether, document that it is
 %   better to use the \env{documentation} and \env{implementation}
@@ -3631,6 +3631,15 @@ and all files in that bundle must be distributed together.
       }
       { #1 \endinput }
   }
+%    \end{macrocode}
+%    We also need to support doc V3 \cs{MaybeStop} if it is around
+%    (which may not be the case).
+%    \begin{macrocode}
+\cs_if_exist:NT \MaybeStop  
+   { \RenewCommandCopy \MaybeStop \StopEventually }
+%    \end{macrocode}
+%
+%    \begin{macrocode}
 \DeclareDocumentCommand \Finale { }
   { \tl_use:N \g_@@_finale_tl }
 \tl_new:N \g_@@_finale_tl
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3docstrip.dtx b/Master/texmf-dist/source/latex/l3kernel/l3docstrip.dtx
index c654fad889e..53b8272d2e7 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3expan.dtx b/Master/texmf-dist/source/latex/l3kernel/l3expan.dtx
index 584707639fa..05c59202b6a 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3file.dtx b/Master/texmf-dist/source/latex/l3kernel/l3file.dtx
index 2dd6b3706ed..511bc6729ea 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3flag.dtx b/Master/texmf-dist/source/latex/l3kernel/l3flag.dtx
index 737df316304..70643428174 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-assign.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-assign.dtx
index 74658c8588c..01dc83b99b3 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-assign.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-assign.dtx
@@ -40,7 +40,7 @@
 %          {latex-team@latex-project.org}^^A
 %    }^^A
 % }
-% \date{Released 2022-01-12}
+% \date{Released 2022-01-21}
 % \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 c516234aed8..b69bff8ca8c 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-basics.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-basics.dtx
index 6bfc75990ed..e5154b99052 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-convert.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-convert.dtx
index c462700dc09..cf37b8e011b 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-expo.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-expo.dtx
index e39ae9b9eac..5850fb64c2e 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-extended.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-extended.dtx
index e5ee0bfbb96..aec0ec0fa7c 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-logic.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-logic.dtx
index 8603c45e7fe..3b4b7a7f6ce 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-parse.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-parse.dtx
index 30df6a7b143..d07246a182c 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-random.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-random.dtx
index 83efd217f95..bee840c0d97 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-round.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-round.dtx
index a4c3121ee1c..bb04b50a8ed 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-traps.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-traps.dtx
index f52c248f1cd..3a5e6e82bb7 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 2022-01-12}
+% \date{Released 2022-01-21}
 % \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 c46866fa3c2..dd48404aebf 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp.dtx
index 94560b4ba81..d2be6ae750e 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fparray.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fparray.dtx
index d37c1663f9c..f8f3af0633f 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3int.dtx b/Master/texmf-dist/source/latex/l3kernel/l3int.dtx
index 9d21602f793..8c8a4616a81 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3intarray.dtx b/Master/texmf-dist/source/latex/l3kernel/l3intarray.dtx
index ffd2bf0c84d..13abe64b445 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3kernel-functions.dtx b/Master/texmf-dist/source/latex/l3kernel/l3kernel-functions.dtx
index 5dc90baa73c..b4a806695eb 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3kernel-functions.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3kernel-functions.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3keys.dtx b/Master/texmf-dist/source/latex/l3kernel/l3keys.dtx
index dab5a8f423d..b0222b657b7 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
@@ -358,7 +358,7 @@
 %   require a value at point-of-use unless a default is set.
 % \end{function}
 %
-% \begin{function}[updated = 2021-11-22]
+% \begin{function}[updated = 2022-01-15]
 %   {
 %     .legacy_if_set:n, .legacy_if_gset:n,
 %     .legacy_if_set_inverse:n, .legacy_if_gset_inverse:n
@@ -369,8 +369,7 @@
 %   Defines \meta{key} to set legacy \cs{if} \meta{switch} to \meta{value}
 %   (which must be either \enquote{\texttt{true}} or \enquote{\texttt{false}}).
 %   The \meta{switch} is the name of the switch \emph{without the leading
-%   \cs{if}}. Note that in contrast to \pkg{expl3} variables, the \meta{switch}
-%   will \emph{not} be created if it does not exist.
+%   \cs{if}}.
 %
 %   The \texttt{inverse} versions will set the \meta{switch} to the logical
 %   opposite of the \meta{value}.
@@ -2063,6 +2062,11 @@
           \l_keys_key_str
       }
     \@@_default_set:n { true }
+    \cs_if_exist:cF { if#1 }
+      {
+         \cs:w newif \exp_after:wN \cs_end:
+           \cs:w if#1 \cs_end:
+      }
   }
 %    \end{macrocode}
 % \end{macro}
@@ -2670,9 +2674,9 @@
       \@@_tmp:nn
     }
   \@@_tmp:nn
-    { legacy_if:n } { if }
-    { tl_set:N }    { store }
-    { usage:n }     { usage }
+    { legacy_if_set:n } { if }
+    { tl_set:N }        { store }
+    { usage:n }         { usage }
     { \q_recursion_tail } { }
     \q_recursion_stop
 \group_end:
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3legacy.dtx b/Master/texmf-dist/source/latex/l3kernel/l3legacy.dtx
index 9ffbb1c1e62..b30a88753d3 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3luatex.dtx b/Master/texmf-dist/source/latex/l3kernel/l3luatex.dtx
index f3afe0a091d..c0ede9bcfb0 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3msg.dtx b/Master/texmf-dist/source/latex/l3kernel/l3msg.dtx
index 7e0e798ac7e..576b9a0a879 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3names.dtx b/Master/texmf-dist/source/latex/l3kernel/l3names.dtx
index b113b69e933..a496f65eeed 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3pdf.dtx b/Master/texmf-dist/source/latex/l3kernel/l3pdf.dtx
index 347c801e50b..7cf296d86c3 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3pdf.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3pdf.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3prg.dtx b/Master/texmf-dist/source/latex/l3kernel/l3prg.dtx
index dbeddb192b9..1ba4c698ad0 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3prop.dtx b/Master/texmf-dist/source/latex/l3kernel/l3prop.dtx
index 16db6a427b0..1c78251189b 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3quark.dtx b/Master/texmf-dist/source/latex/l3kernel/l3quark.dtx
index 2b1bb4eacb4..13c7964b1a5 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3regex.dtx b/Master/texmf-dist/source/latex/l3kernel/l3regex.dtx
index cab4d738bff..ca13353d9ac 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3seq.dtx b/Master/texmf-dist/source/latex/l3kernel/l3seq.dtx
index 3800fc99d8b..08b0fe1f126 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3skip.dtx b/Master/texmf-dist/source/latex/l3kernel/l3skip.dtx
index 7e98d77f3ef..1c980d0e8dc 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3sort.dtx b/Master/texmf-dist/source/latex/l3kernel/l3sort.dtx
index 7781995193a..82887c77654 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3str-convert.dtx b/Master/texmf-dist/source/latex/l3kernel/l3str-convert.dtx
index 49e0ef8d491..b3ee3fecda6 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3str.dtx b/Master/texmf-dist/source/latex/l3kernel/l3str.dtx
index 637d892b4e1..5585d822517 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3sys.dtx b/Master/texmf-dist/source/latex/l3kernel/l3sys.dtx
index 5d5d5ae9b12..2c836271d26 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3text-case.dtx b/Master/texmf-dist/source/latex/l3kernel/l3text-case.dtx
index 07131772c19..9fe79ebbe22 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3text-purify.dtx b/Master/texmf-dist/source/latex/l3kernel/l3text-purify.dtx
index 63ccc846106..147fe67f3aa 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3text-purify.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3text-purify.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3text.dtx b/Master/texmf-dist/source/latex/l3kernel/l3text.dtx
index 0be16822a65..1ccccb7d1f3 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3tl-analysis.dtx b/Master/texmf-dist/source/latex/l3kernel/l3tl-analysis.dtx
index c8ceb1d531d..467545aa060 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3tl.dtx b/Master/texmf-dist/source/latex/l3kernel/l3tl.dtx
index 39f98f5e28e..2076ae25d1f 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3token.dtx b/Master/texmf-dist/source/latex/l3kernel/l3token.dtx
index 42236e0021e..fdf7c08b766 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3unicode.dtx b/Master/texmf-dist/source/latex/l3kernel/l3unicode.dtx
index 452281b7351..13d174d19af 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 2022-01-12}
+% \date{Released 2022-01-21}
 %
 % \maketitle
 %