l3kernel (6apr20)

git-svn-id: svn://tug.org/texlive/trunk@54672 c570f23f-e606-0410-a88d-b1316a301751

56 files changed, 113 insertions, 71 deletions

diff --git a/Master/texmf-dist/source/latex/l3kernel/expl3.dtx b/Master/texmf-dist/source/latex/l3kernel/expl3.dtx
index 080baf1bed3..b2367b1fa5c 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{2020-03-06}%
+\def\ExplFileDate{2020-04-06}%
 %<*driver>
 \documentclass[full]{l3doc}
 \usepackage{graphicx}
@@ -51,7 +51,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3alloc.dtx b/Master/texmf-dist/source/latex/l3kernel/l3alloc.dtx
index 190b3edc379..b319591df4b 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3basics.dtx b/Master/texmf-dist/source/latex/l3kernel/l3basics.dtx
index 349ec432352..7ec163623a4 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3bootstrap.dtx b/Master/texmf-dist/source/latex/l3kernel/l3bootstrap.dtx
index 4427850302f..9d6f2cce417 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3box.dtx b/Master/texmf-dist/source/latex/l3kernel/l3box.dtx
index 91ddc238a60..638396d4e67 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3candidates.dtx b/Master/texmf-dist/source/latex/l3kernel/l3candidates.dtx
index e346f674a70..bb16a00a6ee 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
@@ -1405,6 +1405,9 @@
 % \begin{macro}{\ior_shell_open:Nn}
 % \begin{macro}{\@@_shell_open:nN}
 %   Actually much easier than either the standard open or input versions!
+%   When calling \cs{__kernel_ior_open:Nn} the file the pipe is added to
+%   signal a shell command, but the quotes are not added yet---they are
+%   added later by \cs{__kernel_file_name_quote:n}.
 %    \begin{macrocode}
 \cs_new_protected:Npn \ior_shell_open:Nn #1#2
   {
@@ -1419,7 +1422,7 @@
         \__kernel_msg_error:nnx
           { kernel } { quote-in-shell } {#1}
       }
-      { \__kernel_ior_open:Nn #2 { "|#1" } }
+      { \__kernel_ior_open:Nn #2 { |#1 } }
   }
 \__kernel_msg_new:nnnn { kernel } { pipe-failed }
   { Cannot~run~piped~system~commands. }
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3clist.dtx b/Master/texmf-dist/source/latex/l3kernel/l3clist.dtx
index 3c79a276d90..6b58b6020f4 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3coffins.dtx b/Master/texmf-dist/source/latex/l3kernel/l3coffins.dtx
index 6824a83a2d3..1d51c406230 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3color-base.dtx b/Master/texmf-dist/source/latex/l3kernel/l3color-base.dtx
index b5c9e391895..66141b79125 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3debug.dtx b/Master/texmf-dist/source/latex/l3kernel/l3debug.dtx
index 04ba29e9159..e6baacd6776 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3deprecation.dtx b/Master/texmf-dist/source/latex/l3kernel/l3deprecation.dtx
index cf9733ef68e..674ad814570 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3doc.dtx b/Master/texmf-dist/source/latex/l3kernel/l3doc.dtx
index d474ceabd84..2da64b57e26 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3doc.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3doc.dtx
@@ -79,7 +79,7 @@ and all files in that bundle must be distributed together.
 %
 % \title{The \cls{l3doc} class}
 % \author{\Team}
-% \date{Released 2020-03-06}
+% \date{Released 2020-04-06}
 % \maketitle
 % \tableofcontents
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3docstrip.dtx b/Master/texmf-dist/source/latex/l3kernel/l3docstrip.dtx
index 1e7a512c56a..e9eacfdd026 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3expan.dtx b/Master/texmf-dist/source/latex/l3kernel/l3expan.dtx
index f356ac22dfc..f40faf0c148 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3file.dtx b/Master/texmf-dist/source/latex/l3kernel/l3file.dtx
index 51506ece3c1..55d906d062b 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3final.dtx b/Master/texmf-dist/source/latex/l3kernel/l3final.dtx
index febd7f7aa9e..537880051a6 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3flag.dtx b/Master/texmf-dist/source/latex/l3kernel/l3flag.dtx
index d807c132ed6..711a809a62a 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-assign.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-assign.dtx
index dab8dc4d7d6..ece21287941 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 2020-03-06}
+% \date{Released 2020-04-06}
 % \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 f9601e4d768..1b9d63ff597 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-basics.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-basics.dtx
index 75803be1af8..501ae09c6eb 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-convert.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-convert.dtx
index 03e40eae388..be5bb9530eb 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 2020-03-06}
+% \date{Released 2020-04-06}
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 % \maketitle
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-expo.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-expo.dtx
index 8489efefae4..35fae0ce49b 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-extended.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-extended.dtx
index f08e2562262..026fdda4105 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 2020-03-06}
+% \date{Released 2020-04-06}
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 % \maketitle
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-logic.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-logic.dtx
index d58c523d9d6..b81a1066e3a 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-parse.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-parse.dtx
index 0d125aeaec8..e69b63ba050 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-random.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-random.dtx
index 17bd04d9eed..b2bcf484a1f 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-round.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-round.dtx
index 5063fa4105a..59b7f978ee5 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 2020-03-06}
+% \date{Released 2020-04-06}
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 % \maketitle
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-traps.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-traps.dtx
index 07e29f0bb41..4b394358d68 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 2020-03-06}
+% \date{Released 2020-04-06}
 % \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 3fef46a6c29..cbe388e0fde 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp.dtx
index e4dbc76a8e0..61904f6ca45 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp.dtx
@@ -49,7 +49,7 @@
 %    }^^A
 % }
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-% \date{Released 2020-03-06}
+% \date{Released 2020-04-06}
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fparray.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fparray.dtx
index 3016f666fb6..f615473e387 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fparray.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fparray.dtx
@@ -44,7 +44,7 @@
 %    }^^A
 % }
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-% \date{Released 2020-03-06}
+% \date{Released 2020-04-06}
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3int.dtx b/Master/texmf-dist/source/latex/l3kernel/l3int.dtx
index 8d9fc1c8955..f116ca72ce5 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3int.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3int.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
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-% \date{Released 2020-03-06}
+% \date{Released 2020-04-06}
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3intarray.dtx b/Master/texmf-dist/source/latex/l3kernel/l3intarray.dtx
index 0219861d145..b83c9b2a908 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3intarray.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3intarray.dtx
@@ -44,7 +44,7 @@
 %    }^^A
 % }
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-% \date{Released 2020-03-06}
+% \date{Released 2020-04-06}
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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 b58d0fdc27c..40e53bb11f3 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
 % }
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-% \date{Released 2020-03-06}
+% \date{Released 2020-04-06}
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3keys.dtx b/Master/texmf-dist/source/latex/l3kernel/l3keys.dtx
index ab068d57860..fb7b8050b1f 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 2020-03-06}
+% \date{Released 2020-04-06}
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 % \maketitle
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3legacy.dtx b/Master/texmf-dist/source/latex/l3kernel/l3legacy.dtx
index 14320d3ada2..fe455e7abdc 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3legacy.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3legacy.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
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-% \date{Released 2020-03-06}
+% \date{Released 2020-04-06}
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 % \maketitle
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3luatex.dtx b/Master/texmf-dist/source/latex/l3kernel/l3luatex.dtx
index 89185a21867..2aeaa1179dd 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
@@ -158,7 +158,7 @@
 %   \begin{syntax}
 %     |l3kernel.filemdfivesum(|\meta{file}|)|
 %   \end{syntax}
-%   Returns the of the MD5 sum of the file contents read as bytes; note that
+%   Returns the MD5 sum of the file contents read as bytes; note that
 %   the result will depend on the nature of the line endings used in the file,
 %   in contrast to normal \TeX{} behaviour. If the \meta{file} is not found,
 %   nothing is returned with \emph{no error raised}.
@@ -168,7 +168,7 @@
 %   \begin{syntax}
 %     |l3kernel.filemoddate(|\meta{file}|)|
 %   \end{syntax}
-%   Returns the of the date/time of last modification of the \meta{file} in the
+%   Returns the date/time of last modification of the \meta{file} in the
 %   format
 %   \begin{quote}
 %     |D:|\meta{year}\meta{month}\meta{day}\meta{hour}\meta{minute}^^A
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3msg.dtx b/Master/texmf-dist/source/latex/l3kernel/l3msg.dtx
index 68264ca6d1d..240649d5fa9 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3names.dtx b/Master/texmf-dist/source/latex/l3kernel/l3names.dtx
index ccd26ea9c3a..93251497f42 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3prg.dtx b/Master/texmf-dist/source/latex/l3kernel/l3prg.dtx
index 8058df1d862..469c43fb0e2 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3prop.dtx b/Master/texmf-dist/source/latex/l3kernel/l3prop.dtx
index 3bacdb13749..f728416ae2c 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3quark.dtx b/Master/texmf-dist/source/latex/l3kernel/l3quark.dtx
index 25d382e2fda..772ffde63b2 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3regex.dtx b/Master/texmf-dist/source/latex/l3kernel/l3regex.dtx
index 6fbdb21eb84..b5eac073604 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3seq.dtx b/Master/texmf-dist/source/latex/l3kernel/l3seq.dtx
index 44ce65943db..0f5f5616558 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
@@ -1525,9 +1525,11 @@
           }
           {
             \group_begin:
-              \cs_set_eq:NN \@@_item:n \@@_shuffle_item:n
               \int_zero:N \l_@@_internal_a_int
+              \@@_push_item_def:
+              \cs_gset_eq:NN \@@_item:n \@@_shuffle_item:n
               #2
+              \@@_pop_item_def:
               \seq_gset_from_inline_x:Nnn \g_@@_internal_seq
                 { \int_step_function:nN { \l_@@_internal_a_int } }
                 { \tex_the:D \tex_toks:D ##1 }
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3skip.dtx b/Master/texmf-dist/source/latex/l3kernel/l3skip.dtx
index 364ff13e324..32facf9bf06 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3sort.dtx b/Master/texmf-dist/source/latex/l3kernel/l3sort.dtx
index d26ecdcf280..e6e254a57c2 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3str-convert.dtx b/Master/texmf-dist/source/latex/l3kernel/l3str-convert.dtx
index 37a647c9dca..ea0839abf01 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3str-convert.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3str-convert.dtx
@@ -1,7 +1,7 @@
 % \iffalse meta-comment
 %
 %% File: l3str-convert.dtx
-% 
+%
 % Copyright (C) 2013-2020 The LaTeX3 Project
 %
 % It may be distributed and/or modified under the conditions of the
@@ -44,7 +44,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
@@ -68,7 +68,7 @@
 %   \item Bytes are translated to \TeX{} tokens through a given
 %     \enquote{escaping}. Those are defined for the most part by the
 %     \texttt{pdf} file format.  See Table~\ref{tab:escapings} for a
-%     list of escaping methods supported.\footnotemark
+%     list of escaping methods supported.\footnotemark[\csname c@footnote\endcsname]
 % \end{itemize}
 %
 % \begin{table}\centering
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3str.dtx b/Master/texmf-dist/source/latex/l3kernel/l3str.dtx
index efb99050c56..af9fa9cd8b2 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3sys.dtx b/Master/texmf-dist/source/latex/l3kernel/l3sys.dtx
index 382b2a50703..889e3f14fbf 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3text-case.dtx b/Master/texmf-dist/source/latex/l3kernel/l3text-case.dtx
index 44b06224b5f..cb898633a73 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
@@ -65,6 +65,14 @@
 %
 % \subsection{Case changing}
 %
+% \begin{variable}{\l_text_titlecase_check_letter_bool}
+%   Needed to determine the route used in titlecasing.
+%    \begin{macrocode}
+\bool_new:N \l_text_titlecase_check_letter_bool
+\bool_set_true:N \l_text_titlecase_check_letter_bool
+%    \end{macrocode}
+% \end{variable}
+%
 % \begin{macro}[EXP]
 %   {
 %     \text_lowercase:n,
@@ -519,17 +527,21 @@
 %    \begin{macrocode}
 \cs_new:Npx \@@_change_case_char_title:nnN #1#2#3
   {
-    \bool_lazy_or:nnTF
-      { \sys_if_engine_luatex_p: }
-      { \sys_if_engine_xetex_p: }
-      { \exp_not:N \token_if_letter:NTF #3 }
+    \exp_not:N \bool_if:NTF \l_text_titlecase_check_letter_bool
       {
-        \exp_not:N \bool_lazy_or:nnTF
-          { \exp_not:N \token_if_letter_p:N #3 }
-          { \exp_not:N \token_if_active_p:N #3 }
+        \bool_lazy_or:nnTF
+          { \sys_if_engine_luatex_p: }
+          { \sys_if_engine_xetex_p: }
+          { \exp_not:N \token_if_letter:NTF #3 }
+          {
+            \exp_not:N \bool_lazy_or:nnTF
+              { \exp_not:N \token_if_letter_p:N #3 }
+              { \exp_not:N \token_if_active_p:N #3 }
+          }
+          { \exp_not:N \use:c { @@_change_case_char_ #1 :nN } }
+          { \exp_not:N \@@_change_case_char_title:nnnN { title } {#1} }
       }
       { \exp_not:N \use:c { @@_change_case_char_ #1 :nN } }
-      { \exp_not:N \@@_change_case_char_title:nnnN { title } {#1} }
         {#2} #3
   }
 \cs_new_eq:NN \@@_change_case_char_titleonly:nnN
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3text-purify.dtx b/Master/texmf-dist/source/latex/l3kernel/l3text-purify.dtx
index fdddb254149..eda15bd6436 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3text.dtx b/Master/texmf-dist/source/latex/l3kernel/l3text.dtx
index 8d06641d956..b8d536b18ae 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
@@ -178,6 +178,21 @@
 %       retains two separate letters, thus this transformation \emph{is}
 %       available using \pdfTeX{}.
 %   \end{itemize}
+%
+%  For titlecasing, note that there are two functions available. The
+%  function \cs{text_titlecase:n} applies (broadly) uppercasing to the first
+%  letter of the input, then lowercasing to the remainder. In contrast,
+%  \cs{text_titlecase_first:n} \emph{only} carries out the uppercasing operation,
+%  and leaves the balance of the input unchanged. Determining whether
+%  non-letter characters at the start of text should switch from upper- to
+%  lowercasing is controllable. When \cs{l_text_titlecase_check_letter_bool} is
+%  \texttt{true}, characters which are not letters (category code~$11$) are
+%  left unchanged and \enquote{skipped}: the first \emph{letter} is uppercased.
+%  (With $8$-bit engines, this is extended to active characters which form
+%  part of a multi-byte letter codepoint.) When
+%  \cs{l_text_titlecase_check_letter_bool} is \texttt{false}, the first
+%  character is uppercased, and the rest lowercased, irrespective of the nature
+%  of the character.
 % \end{function}
 %
 % \subsection{Removing formatting from text}
@@ -234,10 +249,20 @@
 %   content \emph{may} be excluded from processing.
 % \end{variable}
 %
+% \begin{variable}{\l_text_case_exclude_arg_tl}
+%   Lists commands which are excluded from case changing.
+% \end{variable}
+%
 % \begin{variable}{\l_text_expand_exclude_tl}
 %   Lists commands which are excluded from expansion.
 % \end{variable}
 %
+% \begin{variable}{\l_text_titlecase_check_letter_bool}
+%   Controls how the start of titlecasing is handled: when \texttt{true}, the
+%   first \emph{letter} in text is considered. The standard setting is
+%   \texttt{true}.
+% \end{variable}
+%
 % \end{documentation}
 %
 % \begin{implementation}
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3tl-analysis.dtx b/Master/texmf-dist/source/latex/l3kernel/l3tl-analysis.dtx
index bdfc80f714c..0ae289273f5 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3tl.dtx b/Master/texmf-dist/source/latex/l3kernel/l3tl.dtx
index 3fba28f01d1..f12430ba38e 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3token.dtx b/Master/texmf-dist/source/latex/l3kernel/l3token.dtx
index 2c7dac38985..ba8e7a7d9c6 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3unicode.dtx b/Master/texmf-dist/source/latex/l3kernel/l3unicode.dtx
index 90dd9057b41..5f001aa2c0b 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 2020-03-06}
+% \date{Released 2020-04-06}
 %
 % \maketitle
 %