l3 (15may20)

git-svn-id: svn://tug.org/texlive/trunk@55157 c570f23f-e606-0410-a88d-b1316a301751

61 files changed, 172 insertions, 154 deletions

diff --git a/Master/texmf-dist/source/latex/l3kernel/expl3.dtx b/Master/texmf-dist/source/latex/l3kernel/expl3.dtx
index c03cfc436e5..1abb69d728f 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{2020-05-14}%
+\def\ExplFileDate{2020-05-15}%
 %<*driver>
 \documentclass[full]{l3doc}
 \usepackage{graphicx}
@@ -51,7 +51,7 @@
 %    }^^A
 % }
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-% \date{Released 2020-05-14}
+% \date{Released 2020-05-15}
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3alloc.dtx b/Master/texmf-dist/source/latex/l3kernel/l3alloc.dtx
index 4e3ffdbe20f..7d54407af64 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3alloc.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3alloc.dtx
@@ -43,7 +43,7 @@
 %    }^^A
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-% \date{Released 2020-05-14}
+% \date{Released 2020-05-15}
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3basics.dtx b/Master/texmf-dist/source/latex/l3kernel/l3basics.dtx
index 8069dbafa87..44085b9b536 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3basics.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3basics.dtx
@@ -43,7 +43,7 @@
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-% \date{Released 2020-05-14}
+% \date{Released 2020-05-15}
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3bootstrap.dtx b/Master/texmf-dist/source/latex/l3kernel/l3bootstrap.dtx
index 88682ead646..6efb99a6cc6 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3bootstrap.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3bootstrap.dtx
@@ -43,7 +43,7 @@
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-% \date{Released 2020-05-14}
+% \date{Released 2020-05-15}
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3box.dtx b/Master/texmf-dist/source/latex/l3kernel/l3box.dtx
index 9279b3a1da4..8576615d6e3 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3box.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3box.dtx
@@ -43,7 +43,7 @@
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-% \date{Released 2020-05-14}
+% \date{Released 2020-05-15}
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3candidates.dtx b/Master/texmf-dist/source/latex/l3kernel/l3candidates.dtx
index 90d433dcd94..e5995e626c2 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3candidates.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3candidates.dtx
@@ -44,7 +44,7 @@
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-% \date{Released 2020-05-14}
+% \date{Released 2020-05-15}
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3clist.dtx b/Master/texmf-dist/source/latex/l3kernel/l3clist.dtx
index b6c9390ceef..f05a10aa2b4 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3clist.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3clist.dtx
@@ -44,7 +44,7 @@
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-% \date{Released 2020-05-14}
+% \date{Released 2020-05-15}
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3coffins.dtx b/Master/texmf-dist/source/latex/l3kernel/l3coffins.dtx
index 2dd3f49c121..eda6dcbd217 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3coffins.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3coffins.dtx
@@ -43,7 +43,7 @@
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3color-base.dtx b/Master/texmf-dist/source/latex/l3kernel/l3color-base.dtx
index 5f0d01d4207..d44274517d3 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 @@
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+% \date{Released 2020-05-15}
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3debug.dtx b/Master/texmf-dist/source/latex/l3kernel/l3debug.dtx
index d3be8e5fd03..9c7bb162eba 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3debug.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3debug.dtx
@@ -43,7 +43,7 @@
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-% \date{Released 2020-05-14}
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3deprecation.dtx b/Master/texmf-dist/source/latex/l3kernel/l3deprecation.dtx
index 3143cbcd9f1..eaa3b19256e 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3deprecation.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3deprecation.dtx
@@ -43,7 +43,7 @@
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-% \date{Released 2020-05-14}
+% \date{Released 2020-05-15}
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3doc.dtx b/Master/texmf-dist/source/latex/l3kernel/l3doc.dtx
index 1f9bb203941..9c8e7be645f 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 2020-05-14}
+% \date{Released 2020-05-15}
 % \maketitle
 % \tableofcontents
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3docstrip.dtx b/Master/texmf-dist/source/latex/l3kernel/l3docstrip.dtx
index 8177c56ddce..54e806acd0a 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3docstrip.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3docstrip.dtx
@@ -63,7 +63,7 @@
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3expan.dtx b/Master/texmf-dist/source/latex/l3kernel/l3expan.dtx
index 6357eb73174..839b255623b 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3expan.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3expan.dtx
@@ -43,7 +43,7 @@
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3file.dtx b/Master/texmf-dist/source/latex/l3kernel/l3file.dtx
index 2aba70b29ed..6e2af806599 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3file.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3file.dtx
@@ -44,7 +44,7 @@
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3final.dtx b/Master/texmf-dist/source/latex/l3kernel/l3final.dtx
index 79b816bfd8a..e51ee444416 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3final.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3final.dtx
@@ -43,7 +43,7 @@
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3flag.dtx b/Master/texmf-dist/source/latex/l3kernel/l3flag.dtx
index 301f78a3407..d09d1bb5966 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3flag.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3flag.dtx
@@ -43,7 +43,7 @@
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-assign.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-assign.dtx
index 64e67f8fad0..00bdfef0696 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
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+% \date{Released 2020-05-15}
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 % \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 85a31450c94..f251d60c4f7 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 @@
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-basics.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-basics.dtx
index b634f3a949a..c97cd6c83d6 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 @@
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-convert.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-convert.dtx
index 9ede33c3780..cd317883bc0 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 @@
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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 8f2c090d5b0..70ad1c58f3d 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 @@
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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 28b2eaca4fa..c5377c74dda 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 @@
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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 a76ba25fb4b..9371abf9ef2 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-logic.dtx
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@@ -40,7 +40,7 @@
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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 bc0a4c1e64f..17eac4a16b1 100644
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@@ -40,7 +40,7 @@
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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 61e8d09b8fe..d5e52059b96 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 @@
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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 0edd5bf20c1..6dfd891faed 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-round.dtx
+++ b/Master/texmf-dist/source/latex/l3kernel/l3fp-round.dtx
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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 093fdccffe0..96083857d18 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-traps.dtx
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@@ -40,7 +40,7 @@
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diff --git a/Master/texmf-dist/source/latex/l3kernel/l3fp-trig.dtx b/Master/texmf-dist/source/latex/l3kernel/l3fp-trig.dtx
index 1d4ce7f6a68..b8c7aa16575 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3fp-trig.dtx
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@@ -40,7 +40,7 @@
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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 4dd9a6815c1..287c60c8ffd 100644
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index fd8c5ed6e01..fc654e2b17d 100644
--- a/Master/texmf-dist/source/latex/l3kernel/l3luatex.dtx
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 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3prg.dtx b/Master/texmf-dist/source/latex/l3kernel/l3prg.dtx
index 34a14829c7d..a7ddadeef66 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 2020-05-14}
+% \date{Released 2020-05-15}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3prop.dtx b/Master/texmf-dist/source/latex/l3kernel/l3prop.dtx
index 33741fecf0a..f5076b9ffb8 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 2020-05-14}
+% \date{Released 2020-05-15}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3quark.dtx b/Master/texmf-dist/source/latex/l3kernel/l3quark.dtx
index 9068f7bbecd..d0ed90c4e7d 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 2020-05-14}
+% \date{Released 2020-05-15}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3regex.dtx b/Master/texmf-dist/source/latex/l3kernel/l3regex.dtx
index 80e2ffa8960..39f97fd1c1b 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 2020-05-14}
+% \date{Released 2020-05-15}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3seq.dtx b/Master/texmf-dist/source/latex/l3kernel/l3seq.dtx
index 830adba2cb3..0f6c9dbfbef 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 2020-05-14}
+% \date{Released 2020-05-15}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3skip.dtx b/Master/texmf-dist/source/latex/l3kernel/l3skip.dtx
index a4973652c1f..fcc18befca6 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 2020-05-14}
+% \date{Released 2020-05-15}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3sort.dtx b/Master/texmf-dist/source/latex/l3kernel/l3sort.dtx
index 89c085f7782..4c781cd471d 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 2020-05-14}
+% \date{Released 2020-05-15}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3str-convert.dtx b/Master/texmf-dist/source/latex/l3kernel/l3str-convert.dtx
index 88bf391f25b..5836bea27ba 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 2020-05-14}
+% \date{Released 2020-05-15}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3str.dtx b/Master/texmf-dist/source/latex/l3kernel/l3str.dtx
index d15ee54ed18..efd5d4f6f80 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 2020-05-14}
+% \date{Released 2020-05-15}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3sys.dtx b/Master/texmf-dist/source/latex/l3kernel/l3sys.dtx
index fe96f7aec5b..15b06c49262 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 2020-05-14}
+% \date{Released 2020-05-15}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3text-case.dtx b/Master/texmf-dist/source/latex/l3kernel/l3text-case.dtx
index 51819ed5145..ed23d7204ad 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 2020-05-14}
+% \date{Released 2020-05-15}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3text-purify.dtx b/Master/texmf-dist/source/latex/l3kernel/l3text-purify.dtx
index 54266ba72c8..312d7e180dc 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 2020-05-14}
+% \date{Released 2020-05-15}
 %
 % \maketitle
 %
@@ -72,40 +72,61 @@
 %    \end{macrocode}
 % \end{macro}
 %
-% \begin{macro}[rEXP]{\text_purify:n, \@@_purify:n}
-% \begin{macro}[rEXP]{\@@_purify_loop:w}
-% \begin{macro}[rEXP]{\@@_purify_group:n}
-% \begin{macro}[rEXP]{\@@_purify_space:w}
-% \begin{macro}[rEXP]{\@@_purify_N_type:N, \@@_purify_N_type_aux:N}
-% \begin{macro}[rEXP]{\@@_purify_math_search:NNN}
-% \begin{macro}[rEXP]{\@@_purify_math_start:NNw}
-% \begin{macro}[rEXP]{\@@_purify_math_store:n}
-% \begin{macro}[rEXP]{\@@_purify_math_store:nw}
-% \begin{macro}[rEXP]{\@@_purify_math_end:w}
-% \begin{macro}[rEXP]{\@@_purify_math_loop:NNw}
-% \begin{macro}[rEXP]{\@@_purify_math_N_type:NNN}
-% \begin{macro}[rEXP]{\@@_purify_math_group:NNn}
-% \begin{macro}[rEXP]{\@@_purify_math_space:NNw}
-% \begin{macro}[rEXP]{\@@_purify_math_cmd:N}
-% \begin{macro}[rEXP]{\@@_purify_math_cmd:NN}
-% \begin{macro}[rEXP]{\@@_purify_math_cmd:Nn}
-% \begin{macro}[rEXP]{\@@_purify_replace:N}
-% \begin{macro}[rEXP]{\@@_purify_replace:n}
-% \begin{macro}[rEXP]{\@@_purify_expand:N, \@@_purify_protect:N}
+% \begin{macro}[EXP]{\text_purify:n, \@@_purify:n}
+% \begin{macro}[EXP]{\@@_purify_store:n}
+% \begin{macro}[EXP]{\@@_purify_store:nw}
+% \begin{macro}[EXP]{\@@_purify_end:w}
+% \begin{macro}[EXP]{\@@_purify_loop:w}
+% \begin{macro}[EXP]{\@@_purify_group:n}
+% \begin{macro}[EXP]{\@@_purify_space:w}
+% \begin{macro}[EXP]{\@@_purify_N_type:N, \@@_purify_N_type_aux:N}
+% \begin{macro}[EXP]{\@@_purify_math_search:NNN}
+% \begin{macro}[EXP]{\@@_purify_math_start:NNw}
+% \begin{macro}[EXP]{\@@_purify_math_store:n}
+% \begin{macro}[EXP]{\@@_purify_math_store:nw}
+% \begin{macro}[EXP]{\@@_purify_math_end:w}
+% \begin{macro}[EXP]{\@@_purify_math_loop:NNw}
+% \begin{macro}[EXP]{\@@_purify_math_N_type:NNN}
+% \begin{macro}[EXP]{\@@_purify_math_group:NNn}
+% \begin{macro}[EXP]{\@@_purify_math_space:NNw}
+% \begin{macro}[EXP]{\@@_purify_math_cmd:N}
+% \begin{macro}[EXP]{\@@_purify_math_cmd:NN}
+% \begin{macro}[EXP]{\@@_purify_math_cmd:Nn}
+% \begin{macro}[EXP]{\@@_purify_replace:N}
+% \begin{macro}[EXP]{\@@_purify_replace:n}
+% \begin{macro}[EXP]{\@@_purify_expand:N, \@@_purify_protect:N}
 %   As in the other parts of the module, we start off with a standard
-%   \enquote{action} loop, with expansion applied up-front. Here, as there
-%   will be no text commands left in the output, there is no concern about
-%   using \cs{exp_not:n} and \texttt{e}-type expansion.
+%   \enquote{action} loop, with expansion applied up-front.
 %    \begin{macrocode}
 \cs_new:Npn \text_purify:n #1
   {
+    \__kernel_exp_not:w \exp_after:wN
+      {
+        \exp:w
+        \exp_args:Ne \@@_purify:n
+          { \text_expand:n {#1} }
+      }
+  }
+\cs_new:Npn \@@_purify:n #1
+  {
     \group_align_safe_begin:
-      \exp_args:Ne \@@_purify:n
-        { \text_expand:n {#1} }
+    \@@_purify_loop:w #1
+      \q_@@_recursion_tail \q_@@_recursion_stop
+    \@@_purify_result:n { }
+  }
+%    \end{macrocode}
+%   As for expansion, collect up the tokens for future use.
+%    \begin{macrocode}
+\cs_new:Npn \@@_purify_store:n #1
+  { \@@_purify_store:nw {#1} }
+\cs_new:Npn \@@_purify_store:nw #1#2 \@@_purify_result:n #3
+  { #2 \@@_purify_result:n { #3 #1 } }
+\cs_new:Npn \@@_purify_end:w #1 \@@_purify_result:n #2
+  {
     \group_align_safe_end:
+    \exp_end:
+    #2
   }
-\cs_new:Npn \@@_purify:n #1
-  { \@@_purify_loop:w #1 \q_@@_recursion_tail \q_@@_recursion_stop }
 %    \end{macrocode}
 %   The main loop is a standard \enquote{tl action}. Unlike the expansion
 %   or case changing, here any groups have to be run inline. Most of the
@@ -125,7 +146,7 @@
 \cs_new:Npn \@@_purify_group:n #1 { \@@_purify_loop:w #1 }
 \exp_last_unbraced:NNo \cs_new:Npn \@@_purify_space:w \c_space_tl
   {
-    \c_space_tl
+    \@@_purify_store:n { ~ }
     \@@_purify_loop:w
   }
 %    \end{macrocode}
@@ -135,7 +156,7 @@
 %    \begin{macrocode}
 \cs_new:Npn \@@_purify_N_type:N #1
   {
-    \@@_if_recursion_tail_stop:N #1
+    \@@_if_recursion_tail_stop_do:Nn #1 { \@@_purify_end:w }
     \@@_purify_N_type_aux:N #1
   }
 \cs_new:Npn \@@_purify_N_type_aux:N #1
@@ -167,11 +188,14 @@
   { #2 \@@_purify_math_result:n { #3 #1 } }
 \cs_new:Npn \@@_purify_math_end:w #1 \@@_purify_math_result:n #2
   {
-    \exp_not:n { $ #2 $ }
+    \@@_purify_store:n { $ #2 $ }
     \@@_purify_loop:w #1
   }
 \cs_new:Npn \@@_purify_math_stop:Nw #1 \@@_purify_math_result:n #2
-  { \exp_not:n {#1#2} }
+  {
+    \@@_purify_store:n {#1#2}
+    \@@_purify_end:w
+  }
 \cs_new:Npn \@@_purify_math_loop:NNw #1#2#3 \q_@@_recursion_stop
   {
     \tl_if_head_is_N_type:nTF {#3}
@@ -253,7 +277,8 @@
         \token_if_cs:NTF #1
           { \@@_purify_expand:N #1 }
           {
-            \@@_token_to_explicit:N #1
+            \exp_args:Ne \@@_purify_store:n
+              { \@@_token_to_explicit:N #1 }
             \@@_purify_loop:w
           }
       }
@@ -271,7 +296,7 @@
   }
 \cs_new:Npn \@@_purify_protect:N #1
   {
-    \@@_if_recursion_tail_stop:N #1
+    \@@_if_recursion_tail_stop_do:Nn #1 { \@@_purify_end:w }
     \@@_purify_loop:w
   }
 %    \end{macrocode}
@@ -295,6 +320,9 @@
 % \end{macro}
 % \end{macro}
 % \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
 %
 % \begin{macro}
 %   {
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3text.dtx b/Master/texmf-dist/source/latex/l3kernel/l3text.dtx
index 0f8f24cafd3..35f1cbb9818 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 2020-05-14}
+% \date{Released 2020-05-15}
 %
 % \maketitle
 %
@@ -197,7 +197,7 @@
 %
 % \subsection{Removing formatting from text}
 %
-% \begin{function}[rEXP, added = 2020-03-05]{\text_purify:n}
+% \begin{function}[EXP, added = 2020-03-05, updated = 2020-05-14]{\text_purify:n}
 %   \begin{syntax}
 %     \cs{text_purify:n} \Arg{text}
 %   \end{syntax}
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3tl-analysis.dtx b/Master/texmf-dist/source/latex/l3kernel/l3tl-analysis.dtx
index 2a6b31f537a..297bceb6820 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 2020-05-14}
+% \date{Released 2020-05-15}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3tl.dtx b/Master/texmf-dist/source/latex/l3kernel/l3tl.dtx
index b3d6c3ddaca..3aa06887054 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 2020-05-14}
+% \date{Released 2020-05-15}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3token.dtx b/Master/texmf-dist/source/latex/l3kernel/l3token.dtx
index 0ed1350b035..fbdbd04bd9b 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 2020-05-14}
+% \date{Released 2020-05-15}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3kernel/l3unicode.dtx b/Master/texmf-dist/source/latex/l3kernel/l3unicode.dtx
index 6f2d533f584..03cdf2f0f15 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 2020-05-14}
+% \date{Released 2020-05-15}
 %
 % \maketitle
 %
diff --git a/Master/texmf-dist/source/latex/l3packages/l3keys2e/l3keys2e.dtx b/Master/texmf-dist/source/latex/l3packages/l3keys2e/l3keys2e.dtx
index 6a09bb18bd7..16aefcf57c9 100644
--- a/Master/texmf-dist/source/latex/l3packages/l3keys2e/l3keys2e.dtx
+++ b/Master/texmf-dist/source/latex/l3packages/l3keys2e/l3keys2e.dtx
@@ -62,7 +62,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-05-14}
+% \date{Released 2020-05-15}
 %
 % \maketitle
 %
@@ -139,7 +139,7 @@
 %    \end{macrocode}
 %
 %    \begin{macrocode}
-\ProvidesExplPackage{l3keys2e}{2020-05-14}{}
+\ProvidesExplPackage{l3keys2e}{2020-05-15}{}
   {LaTeX2e option processing using LaTeX3 keys}
 %    \end{macrocode}
 %
diff --git a/Master/texmf-dist/source/latex/l3packages/xfp/xfp.dtx b/Master/texmf-dist/source/latex/l3packages/xfp/xfp.dtx
index e0ebede0f90..05ab4415dde 100644
--- a/Master/texmf-dist/source/latex/l3packages/xfp/xfp.dtx
+++ b/Master/texmf-dist/source/latex/l3packages/xfp/xfp.dtx
@@ -64,7 +64,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-05-14}
+% \date{Released 2020-05-15}
 %
 % \maketitle
 %
@@ -167,7 +167,7 @@
 %    \end{macrocode}
 %
 %    \begin{macrocode}
-\ProvidesExplPackage{xfp}{2020-05-14}{}
+\ProvidesExplPackage{xfp}{2020-05-15}{}
   {L3 Floating point unit}
 %    \end{macrocode}
 %
diff --git a/Master/texmf-dist/source/latex/l3packages/xfrac/xfrac.dtx b/Master/texmf-dist/source/latex/l3packages/xfrac/xfrac.dtx
index 275aa6859a8..5ff7e2b98fe 100644
--- a/Master/texmf-dist/source/latex/l3packages/xfrac/xfrac.dtx
+++ b/Master/texmf-dist/source/latex/l3packages/xfrac/xfrac.dtx
@@ -65,7 +65,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-05-14}
+% \date{Released 2020-05-15}
 %
 % \maketitle
 %
@@ -535,7 +535,7 @@
 %    \end{macrocode}
 %
 %    \begin{macrocode}
-\ProvidesExplPackage{xfrac}{2020-05-14}{}
+\ProvidesExplPackage{xfrac}{2020-05-15}{}
   {L3 Experimental split-level fractions}
 %    \end{macrocode}
 %
diff --git a/Master/texmf-dist/source/latex/l3packages/xparse/xparse.dtx b/Master/texmf-dist/source/latex/l3packages/xparse/xparse.dtx
index c7004349030..fe2df64f5fa 100644
--- a/Master/texmf-dist/source/latex/l3packages/xparse/xparse.dtx
+++ b/Master/texmf-dist/source/latex/l3packages/xparse/xparse.dtx
@@ -67,7 +67,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-05-14}
+% \date{Released 2020-05-15}
 %
 % \maketitle
 %
@@ -975,25 +975,16 @@
 %
 %    \begin{macrocode}
 %<*2ekernel>
-%    \end{macrocode}
-%
-%    \begin{macrocode}
 \everyjob\expandafter{\the\everyjob
   \message{xparse <2020-03-03>}%
 }
 \ExplSyntaxOn
-%    \end{macrocode}
-%
-%    \begin{macrocode}
 %</2ekernel>
 %    \end{macrocode}
 %
 %    \begin{macrocode}
 %<*package>
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-\ProvidesExplPackage{xparse}{2020-05-14}{}
+\ProvidesExplPackage{xparse}{2020-05-15}{}
   {L3 Experimental document command parser}
 %    \end{macrocode}
 %
@@ -1015,12 +1006,22 @@
 \keys_set:nV { xparse } \l_@@_options_clist
 \bool_if:NF \l_@@_log_bool
   { \msg_redirect_module:nnn { LaTeX / xparse } { info } { none } }
+%</package>
 %    \end{macrocode}
 % \end{variable}
 % \end{variable}
 %
+% \subsection{Catcode regime check}
+%
 %    \begin{macrocode}
-%</package>
+%<*core>
+\if_charcode:w xx
+  \cs_gset:Npn \@@_file_end_hook: { }
+\else
+  \ExplSyntaxOn
+  \cs_gset:Npn \@@_file_end_hook: { \ExplSyntaxOff }
+\fi:
+%</core>
 %    \end{macrocode}
 %
 % \subsection{Reload check}
@@ -1043,7 +1044,7 @@
 % \subsection{Variables and constants}
 %
 %    \begin{macrocode}
-%<*!package>
+%<*core|initex>
 %    \end{macrocode}
 %
 % \begin{variable}{\c_@@_special_chars_seq}
@@ -1058,17 +1059,6 @@
 %    \end{macrocode}
 % \end{variable}
 %
-%    \begin{macrocode}
-%<*core>
-\if_charcode:w xx
-  \cs_new:Npn \@@_file_end_hook: { }
-\else
-  \ExplSyntaxOn
-  \cs_new:Npn \@@_file_end_hook: { \ExplSyntaxOff }
-\fi:
-%</core>
-%    \end{macrocode}
-%
 % \begin{variable}{\l_@@_arg_spec_tl}
 %   Holds the argument specification after normalization of shorthands.
 %    \begin{macrocode}
@@ -1923,7 +1913,7 @@
         \@@_bad_def:wn
       }
   }
-%</!package>
+%</core|initex>
 %<*package>
 \cs_gset_protected:Npn \@@_normalize_arg_spec_loop:n #1
   {
@@ -1937,7 +1927,7 @@
       }
   }
 %</package>
-%<*!package>
+%<*core|initex>
 %    \end{macrocode}
 % \end{macro}
 % \end{macro}
@@ -1984,12 +1974,12 @@
       { \@@_normalize_type_t:w * }
   }
 \exp_args:No \@@_tmp:w { \c_novalue_tl }
-%</!package>
+%</core|initex>
 %<*package>
 \cs_new_protected:Npx \@@_normalize_type_g:w
   { \exp_not:N \@@_normalize_type_G:w { \exp_not:V \c_novalue_tl } }
 %</package>
-%<*!package>
+%<*core|initex>
 %    \end{macrocode}
 % \end{macro}
 %
@@ -2103,7 +2093,7 @@
         \@@_normalize_E_unique_check:w #2 \q_stop
       }
   }
-%</!package>
+%</core|initex>
 %<*package>
 \cs_new_protected:Npn \@@_normalize_type_G:w #1
   {
@@ -2114,7 +2104,7 @@
     \@@_normalize_arg_spec_loop:n
   }
 %</package>
-%<*!package>
+%<*core|initex>
 \cs_new_protected:Npn \@@_normalize_type_t:w #1
   {
     \quark_if_recursion_tail_stop_do:Nn #1 { \@@_bad_arg_spec:wn }
@@ -2151,7 +2141,7 @@
 %   \cs{l_@@_arg_spec_tl}, count the mandatory argument, and empty the
 %   list of last delimiters.
 %    \begin{macrocode}
-%</!package>
+%</core|initex>
 %<*package>
 \cs_new_protected:Npn \@@_normalize_type_l:w
   {
@@ -2160,7 +2150,7 @@
     \@@_normalize_arg_spec_loop:n
   }
 %</package>
-%<*!package>
+%<*core|initex>
 \cs_new_protected:Npn \@@_normalize_type_m:w
   {
     \@@_delimiter_check:nnn { } { m } { \iow_char:N \{ }
@@ -2177,7 +2167,7 @@
     \@@_add_arg_spec_mandatory:n { R #1 #2 {#3} }
     \@@_normalize_arg_spec_loop:n
   }
-%</!package>
+%</core|initex>
 %<*package>
 \cs_new_protected:Npn \@@_normalize_type_u:w #1
   {
@@ -2187,7 +2177,7 @@
     \@@_normalize_arg_spec_loop:n
   }
 %</package>
-%<*!package>
+%<*core|initex>
 \cs_new_protected:Npn \@@_normalize_type_v:w
   {
     \@@_normalize_check_gv:N v
@@ -2546,7 +2536,7 @@
 %   For the \texttt{G} type, the grabber and the default are added to the
 %   signature.
 %    \begin{macrocode}
-%</!package>
+%</core|initex>
 %<*package>
 \cs_new_protected:Npn \@@_add_type_G:w #1
   {
@@ -2570,7 +2560,7 @@
     \@@_prepare_signature:N
   }
 %</package>
-%<*!package>
+%<*core|initex>
 %    \end{macrocode}
 % \end{macro}
 %
@@ -2626,7 +2616,7 @@
 %   At the set up stage, the \texttt{u} type argument is identical to the
 %   \texttt{G} type except for the name of the grabber function.
 %    \begin{macrocode}
-%</!package>
+%</core|initex>
 %<*package>
 \cs_new_protected:Npn \@@_add_type_u:w #1
   {
@@ -2637,7 +2627,7 @@
     \@@_prepare_signature:N
   }
 %</package>
-%<*!package>
+%<*core|initex>
 %    \end{macrocode}
 % \end{macro}
 %
@@ -2856,12 +2846,12 @@
 %   parameter text ends with |#| in fact end up being delimited by an
 %   open brace.
 %    \begin{macrocode}
-%</!package>
+%</core|initex>
 %<*package>
 \cs_new_protected:Npn \@@_add_expandable_type_l:w
   { \@@_add_expandable_type_u:w ## }
 %</package>
-%<*!package>
+%<*core|initex>
 %    \end{macrocode}
 % \end{macro}
 %
@@ -2910,7 +2900,7 @@
 %   Define an auxiliary that will be used directly in the signature.  It
 %   grabs one argument delimited by |#1| and places it before \cs{q_@@}.
 %    \begin{macrocode}
-%</!package>
+%</core|initex>
 %<*package>
 \cs_new_protected:Npn \@@_add_expandable_type_u:w #1
   {
@@ -2925,7 +2915,7 @@
     \@@_prepare_signature:N
   }
 %</package>
-%<*!package>
+%<*core|initex>
 %    \end{macrocode}
 % \end{macro}
 %
@@ -3329,7 +3319,7 @@
 %   Optional groups are checked by meaning, so that the same code will
 %   work with, for example, \ConTeXt{}-like input.
 %    \begin{macrocode}
-%</!package>
+%</core|initex>
 %<*package>
 \cs_new_protected:Npn \@@_grab_G:w #1 \@@_run_code:
   {
@@ -3361,7 +3351,7 @@
       { \@@_add_arg:o \c_novalue_tl }
   }
 %</package>
-%<*!package>
+%<*core|initex>
 %    \end{macrocode}
 % \end{macro}
 % \end{macro}
@@ -3374,7 +3364,7 @@
 % \begin{macro}{\@@_grab_l_aux:nN}
 %   Argument grabbers for mandatory \TeX{} arguments are pretty simple.
 %    \begin{macrocode}
-%</!package>
+%</core|initex>
 %<*package>
 \cs_new_protected:Npn \@@_grab_l:w #1 \@@_run_code:
   { \@@_grab_l_aux:nN {#1} \cs_set_protected_nopar:Npn }
@@ -3388,7 +3378,7 @@
     \l_@@_fn_tl
   }
 %</package>
-%<*!package>
+%<*core|initex>
 %    \end{macrocode}
 % \end{macro}
 % \end{macro}
@@ -3560,7 +3550,7 @@
 %   Grabbing up to a list of tokens is quite easy: define the grabber,
 %   and then collect.
 %    \begin{macrocode}
-%</!package>
+%</core|initex>
 %<*package>
 \cs_new_protected:Npn \@@_grab_u:w #1#2 \@@_run_code:
   { \@@_grab_u_aux:nnN {#1} {#2} \cs_set_protected_nopar:Npn }
@@ -3574,7 +3564,7 @@
     \l_@@_fn_tl
   }
 %</package>
-%<*!package>
+%<*core|initex>
 %    \end{macrocode}
 % \end{macro}
 % \end{macro}
@@ -5210,16 +5200,16 @@
 % \end{macro}
 %
 %    \begin{macrocode}
-%<*2ekernel>
-\ExplSyntaxOff
-%</2ekernel>
-%    \end{macrocode}
-%
-%    \begin{macrocode}
 %<*core>
 \@@_file_end_hook:
 %</core>
-%</!package>
+%</core|initex>
+%    \end{macrocode}
+%
+%    \begin{macrocode}
+%<*2ekernel>
+\ExplSyntaxOff
+%</2ekernel>
 %    \end{macrocode}
 %
 % \end{implementation}
diff --git a/Master/texmf-dist/source/latex/l3packages/xtemplate/xtemplate.dtx b/Master/texmf-dist/source/latex/l3packages/xtemplate/xtemplate.dtx
index 897d1d3f844..194b9dbba78 100644
--- a/Master/texmf-dist/source/latex/l3packages/xtemplate/xtemplate.dtx
+++ b/Master/texmf-dist/source/latex/l3packages/xtemplate/xtemplate.dtx
@@ -63,7 +63,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2020-05-14}
+% \date{Released 2020-05-15}
 %
 % \maketitle
 %
@@ -682,7 +682,7 @@
 %    \end{macrocode}
 %
 %    \begin{macrocode}
-\ProvidesExplPackage{xtemplate}{2020-05-14}{}
+\ProvidesExplPackage{xtemplate}{2020-05-15}{}
   {L3 Experimental prototype document functions}
 %    \end{macrocode}
 %