platex (30sep20)

git-svn-id: svn://tug.org/texlive/trunk@56486 c570f23f-e606-0410-a88d-b1316a301751

11 files changed, 690 insertions, 105 deletions

diff --git a/Master/texmf-dist/source/platex/base/Makefile b/Master/texmf-dist/source/platex/base/Makefile
index fdabfd5d4f2..e89d976fca2 100644
--- a/Master/texmf-dist/source/platex/base/Makefile
+++ b/Master/texmf-dist/source/platex/base/Makefile
@@ -15,10 +15,10 @@ all: $(STRIPTARGET) $(PDFTARGET)
 
 PLFMT = platex.ltx plcore.ltx kinsoku.tex pldefs.ltx \
 	jy1mc.fd jy1gt.fd jt1mc.fd jt1gt.fd plext.sty \
-	ptrace.sty pfltrace.sty
+	ptrace.sty pfltrace.sty plexpl3.sty plexpl3.ltx
 
 PLFMT_SRC = platex.dtx plvers.dtx plfonts.dtx plcore.dtx \
-	kinsoku.dtx plext.dtx
+	kinsoku.dtx plext.dtx plexpl3.dtx
 
 PLCLS = jarticle.cls jreport.cls jbook.cls jsize10.clo \
 	jsize11.clo jsize12.clo jbk10.clo jbk11.clo jbk12.clo \
@@ -40,8 +40,7 @@ INTRODOC_SRC = platex.dtx
 
 PLRELDOC_SRC = platexrelease.dtx
 
-PLDOC_SRC = platex.dtx plvers.dtx plfonts.dtx plcore.dtx plext.dtx \
-	pl209.dtx kinsoku.dtx jclasses.dtx jltxdoc.dtx
+PLDOC_SRC = $(PLFMT_SRC) $(PLCLS_SRC) $(PL209_SRC) jltxdoc.dtx
 
 platex.ltx: $(PLFMT_SRC)
 	rm -f $(PLFMT)
diff --git a/Master/texmf-dist/source/platex/base/jclasses.dtx b/Master/texmf-dist/source/platex/base/jclasses.dtx
index 1ac4a591d20..d8edc5fa263 100644
--- a/Master/texmf-dist/source/platex/base/jclasses.dtx
+++ b/Master/texmf-dist/source/platex/base/jclasses.dtx
@@ -105,6 +105,9 @@
 %    (sync with classes.dtx 2019/10/25 v1.4k)}
 % \changes{v1.8e}{2020/01/03}{Normalize label fonts
 %    (sync with classes.dtx 2019/12/20 v1.4l)}
+% \changes{v1.8f}{2020/09/30}{add a fourth argument for better
+%    hyperref compability
+%    (sync with ltsect.dtx 2020/07/27 v1.1e)}
 % \fi
 %
 % \iffalse
@@ -134,7 +137,7 @@
 %<11pt&bk>\ProvidesFile{tbk11.clo}
 %<12pt&bk>\ProvidesFile{tbk12.clo}
 %</tate>
-  [2020/01/03 v1.8e
+  [2020/09/30 v1.8f
 %<article|report|book> Standard pLaTeX class]
 %<10pt|11pt|12pt>  Standard pLaTeX file (size option)]
 %<*driver>
@@ -3997,21 +4000,23 @@
 %
 % \begin{macro}{\addcontentsline}
 % $B=DAH$N>l9g$K%Z!<%8HV9f$r(B|\rensuji|$B$G0O$`$h$&$KJQ99$7$^$9!#(B
-% ^^A $B2#AH$N$H$-$K$b(B`|\rensuji|'$B%3%^%s%I$,=PNO$5$l$^$9$,!"(B
-% ^^A $B$3$N%3%^%s%I$K$h$k1F6A$O$"$j$^$;$s!#(B
 %
 % $B$3$N%^%/%m$O(B\file{ltsect.dtx}$B$GDj5A$5$l$F$$$^$9!#(B
+% ^^A $BL?Na(B |\addcontentsline| $B$H(B |\addtocontents| $B$rAH$_9g$o$;(B
 % \changes{v1.8a}{2018/10/25}{$B%U%!%$%k=q$-=P$7;~$N9TKvJ8;zBP:v(B
 %    (sync with ltsect.dtx 2018/09/26 v1.1c)}
+% \changes{v1.8f}{2020/09/30}{add a fourth argument for better
+%    hyperref compability
+%    (sync with ltsect.dtx 2020/07/27 v1.1e)}
 %    \begin{macrocode}
 \providecommand*\protected@file@percent{}
 \def\addcontentsline#1#2#3{%
   \protected@write\@auxout
     {\let\label\@gobble \let\index\@gobble \let\glossary\@gobble
-%<tate>     \@temptokena{\rensuji{\thepage}}}%
-%<yoko>     \@temptokena{\thepage}}%
-    {\string\@writefile{#1}%
-       {\protect\contentsline{#2}{#3}{\the\@temptokena}%
+%<tate>     \@temptokena{\rensuji{\thepage}}%
+%<yoko>     \@temptokena{\thepage}%
+    }{\string\@writefile{#1}%
+       {\protect\contentsline{#2}{#3}{\the\@temptokena}{}%
         \protected@file@percent}}%
 }
 %    \end{macrocode}
diff --git a/Master/texmf-dist/source/platex/base/kinsoku.dtx b/Master/texmf-dist/source/platex/base/kinsoku.dtx
index e59aa35056d..6f5d1de5e35 100644
--- a/Master/texmf-dist/source/platex/base/kinsoku.dtx
+++ b/Master/texmf-dist/source/platex/base/kinsoku.dtx
@@ -3,7 +3,7 @@
 %
 %  Copyright 1995 ASCII Corporation.
 %  Copyright (c) 2010 ASCII MEDIA WORKS
-%  Copyright (c) 2016-2017 Japanese TeX Development Community
+%  Copyright (c) 2016-2020 Japanese TeX Development Community
 %
 %  This file is part of the pLaTeX2e system (community edition).
 %  -------------------------------------------------------------
@@ -17,6 +17,7 @@
 %      $B$N$?$a$K(B128--256$B$NJ8;z$r(B\texttt{\cs{xspcode}=3}$B$K@_Dj(B}
 % \changes{v1.0b}{2017/08/05}{$B!s!"!u!"(B\%$B!"(B\&$B$N6XB'%Z%J%k%F%#$,(B
 %      $B8m$C$F$$$?$N$r=$@5!J(Bpost $\rightarrow$ pre$B!K(B}
+% \changes{v1.0c}{2020/09/28}{$B!*$N(B\cs{inhibitxspcode}$B$r@_Dj(B}
 % \fi
 %
 % \setcounter{StandardModuleDepth}{1}
@@ -26,7 +27,8 @@
 %<*driver>
 \NeedsTeXFormat{pLaTeX2e}
 % \fi
-\ProvidesFile{kinsoku.dtx}[2017/08/05 v1.0b pLaTeX Kernel (community edition)]
+\ProvidesFile{kinsoku.dtx}
+  [2020/09/28 v1.0c pLaTeX Kernel (community edition)]
 % \iffalse
 \documentclass{jltxdoc}
 \GetFileInfo{kinsoku.dtx}
@@ -348,6 +350,7 @@
 % \end{tabular}
 % \end{center}
 %
+% \changes{v1.0c}{2020/09/28}{$B!*$N(B\cs{inhibitxspcode}$B$r@_Dj(B}
 %    \begin{macrocode}
 \inhibitxspcode`$B!"(B=1
 \inhibitxspcode`$B!#(B=1
@@ -355,6 +358,7 @@
 \inhibitxspcode`$B!%(B=1
 \inhibitxspcode`$B!((B=1
 \inhibitxspcode`$B!)(B=1
+\inhibitxspcode`$B!*(B=1
 \inhibitxspcode`$B!K(B=1
 \inhibitxspcode`$B!J(B=2
 \inhibitxspcode`$B!O(B=1
diff --git a/Master/texmf-dist/source/platex/base/platex.dtx b/Master/texmf-dist/source/platex/base/platex.dtx
index fd595fe8334..b1dd3b368a0 100644
--- a/Master/texmf-dist/source/platex/base/platex.dtx
+++ b/Master/texmf-dist/source/platex/base/platex.dtx
@@ -86,6 +86,8 @@
 % \changes{v1.0y}{2018/09/22}{$B:G=*99?7F|$r(B\file{pldoc.pdf}$B$KI=<((B}
 % \changes{v1.0z}{2019/09/29}{$B%?%$%]=$@5(B}
 % \changes{v1.1}{2020/03/24}{$B%I%-%e%a%s%H$r99?7(B}
+% \changes{v1.1a}{2020/09/26}{\file{plexpl3.dtx}$B$rDI2C(B}
+% \changes{v1.1b}{2020/09/28}{defs$BFI9~8e$K%U%C%/DI2C(B}
 %\else
 % \changes{v1.0}{1995/05/08}{first edition}
 % \changes{v1.0a}{1995/08/25}{Added 'Compatibility', `Usage of \dst{}'
@@ -130,6 +132,8 @@
 % \changes{v1.0y}{2018/09/22}{Show last update info on \file{pldoc.pdf}}
 % \changes{v1.0z}{2019/09/29}{Fix typos in document.}
 % \changes{v1.1}{2020/03/24}{Update document.}
+% \changes{v1.1a}{2020/09/26}{Add \file{plexpl3.dtx}}
+% \changes{v1.1b}{2020/09/28}{Add hook after loading defs}
 %\fi
 % \fi
 %
@@ -137,7 +141,7 @@
 %<*driver>
 \NeedsTeXFormat{pLaTeX2e}
 % \fi
-\ProvidesFile{platex.dtx}[2020/03/24 v1.1 pLaTeX document file]
+\ProvidesFile{platex.dtx}[2020/09/28 v1.1b pLaTeX document file]
 % \iffalse
 \documentclass{jltxdoc}
 \usepackage{plext}
@@ -527,14 +531,18 @@
 % \TeX{}$B$NF~NO%U%!%$%k8!:w%Q%9$K@_Dj$5$l$F$$$k(B
 % $B%G%#%l%/%H%j$K(B\file{pldefs.cfg}$B%U%!%$%k$,$"$k>l9g$O!"(B
 % $B$=$N%U%!%$%k$r;H$$$^$9!#(B
+% $BFI$_9~$_8e$K%3!<%I$,<B9T$5$l$k$+$b$7$l$^$;$s!#(B
 % \changes{v1.0s}{2017/12/05}{$B%G%U%)%k%H@_Dj%U%!%$%k$NFI$_9~$_$r(B
 %    \file{plcore.ltx}$B$+$i(B\file{platex.ltx}$B$X0\F0(B}
+% \changes{v1.1b}{2020/09/28}{defs$BFI9~8e$K%U%C%/DI2C(B}
 %\else
 % Load font-related default settings, \file{pldefs.ltx}.
 % If a file \file{pldefs.cfg} is found, then that file will be
 % used instead.
+% Some code may be executed after loading.
 % \changes{v1.0s}{2017/12/05}{Moved loading default settings
 %    from \file{plcore.ltx} to \file{platex.ltx}}
+% \changes{v1.1b}{2020/09/28}{Add hook after loading defs}
 %\fi
 %    \begin{macrocode}
 \InputIfFileExists{pldefs.cfg}
@@ -542,6 +550,7 @@
                      * Local config file pldefs.cfg used^^J%
                      *************************************}}%
            {\input{pldefs.ltx}}
+\ifx\code@after@pldefs\@undefined\else \code@after@pldefs \fi
 %    \end{macrocode}
 %
 %\ifJAPANESE
@@ -1264,6 +1273,7 @@ all others indicate the places where it is used.}
    \let\ProvidesClass\ProvidesFile
    \let\ProvidesPackage\ProvidesFile
    \input{plvers.dtx}
+   \input{plexpl3.dtx}
    \input{plfonts.dtx}
    \input{plcore.dtx}
    \input{plext.dtx}
@@ -1279,8 +1289,10 @@ all others indicate the places where it is used.}
 %    \end{macrocode}
 %\ifJAPANESE
 % $B$3$3$+$i$,K\J8%Z!<%8$H$J$j$^$9!#(B
+% \changes{v1.1a}{2020/09/26}{\file{plexpl3.dtx}$B$rDI2C(B}
 %\else
 % Here starts the document body.
+% \changes{v1.1a}{2020/09/26}{Add \file{plexpl3.dtx}}
 %\fi
 %    \begin{macrocode}
 \begin{document}
@@ -1293,6 +1305,8 @@ all others indicate the places where it is used.}
 
 \DocInclude{plvers}   % pLaTeX version
 
+\DocInclude{plexpl3}  % additions to expl3
+
 \DocInclude{plfonts}  % NFSS2 commands
 
 \DocInclude{plcore}   % kernel commands
diff --git a/Master/texmf-dist/source/platex/base/platexrelease.ins b/Master/texmf-dist/source/platex/base/platexrelease.ins
index d7b49dc39bd..7b4d7df208f 100644
--- a/Master/texmf-dist/source/platex/base/platexrelease.ins
+++ b/Master/texmf-dist/source/platex/base/platexrelease.ins
@@ -7,7 +7,7 @@
 
 \preamble
 
-Copyright (c) 2016-2018 Japanese TeX Development Community
+Copyright (c) 2016-2020 Japanese TeX Development Community
 
 This file is part of the pLaTeX2e system (community edition).
 -------------------------------------------------------------
@@ -18,6 +18,7 @@ This file is part of the pLaTeX2e system (community edition).
   \file{platexrelease.sty}{
           \from{plvers.dtx}{platexrelease}
           \from{platexrelease.dtx}{platexrelease}
+          \from{plexpl3.dtx}{platexrelease}
           \from{plfonts.dtx}{platexrelease}
           \from{plcore.dtx}{platexrelease}}
 }
diff --git a/Master/texmf-dist/source/platex/base/plcore.dtx b/Master/texmf-dist/source/platex/base/plcore.dtx
index 25f31fbe2c5..a56b737c055 100644
--- a/Master/texmf-dist/source/platex/base/plcore.dtx
+++ b/Master/texmf-dist/source/platex/base/plcore.dtx
@@ -124,13 +124,20 @@
 %    FAM256$B3HD%$"$j$N>l9g$K8B$j%l%8%9%??t$,(B65536$B8D$N$?$a!#(B}
 % \changes{v1.3d}{2019/10/19}{$B%3%T!<K:$l(B}
 % \changes{v1.3e}{2020/03/05}{$B9g;z=hM}$rM^;_$7$D$D(B\cs{xkanjiskip}$B$OA^F~(B}
+% \changes{v1.3f}{2020/09/26}{\cs{AtBeginDvi}$B$r:FDj5A$7$J$$(B
+%    (checked ltshipout.dtx 2020/09/21 v1.0c)}
+% \changes{v1.3f}{2020/09/26}{\cs{__shipout_execute_cont:}$B$r:FDj5A(B
+%    (checked ltshipout.dtx 2020/09/21 v1.0c)}
+% \changes{v1.3g}{2020/09/28}{$B=DAH$G6u$N%U%m!<%H$@$1$N%Z!<%8$N(B
+%    $B%U%C%?(B(Issue 78)}
+% \changes{v1.3g}{2020/09/28}{\file{plexpl3}$B$GDj5A$7$?L?Na$r;HMQ(B}
 % \fi
 %
 % \iffalse
 %<*driver>
 \NeedsTeXFormat{pLaTeX2e}
 % \fi
-\ProvidesFile{plcore.dtx}[2020/03/05 v1.3e pLaTeX core file]
+\ProvidesFile{plcore.dtx}[2020/09/28 v1.3g pLaTeX core file]
 % \iffalse
 \documentclass{jltxdoc}
 \GetFileInfo{plcore.dtx}
@@ -156,6 +163,7 @@
 % \item $B2~9T(B
 % \item $B%*%V%8%'%/%H$N=PNO=g=x(B
 % \item $B%H%s%\(B
+% \item $B=PNO%k!<%A%s(B
 % \item $B5SCm%^%/%m(B
 % \item $BAj8_;2>H(B
 % \item $B5?;w%?%$%WF~NO(B
@@ -786,6 +794,70 @@
     \unvbox\footins}\fi
   \ifvbox\@kludgeins\insert\@kludgeins{\unvbox\@kludgeins}\fi
 }
+%</plcore>
+%    \end{macrocode}
+% \end{macro}
+%
+%
+% \begin{macro}{\@vtryfc}
+% \LaTeXe\ 2017/01/01$B0J9_$G$O!"Nc$($P(B
+%\begin{verbatim}
+% \documentclass{tarticle}
+% \begin{document}
+% \begin{figure}
+% \end{figure}
+% \clearpage
+% a
+% \end{document}
+%\end{verbatim}
+% $B$N$h$&$K$9$k$H!V6u$N%U%m!<%H!W$@$1$N6uGr%Z!<%8$,H/@8$7$^$9!#(B
+% $B$3$N$H$-!"=DAH%/%i%9$G$O%U%C%?$,;}$A>e$,$C$F$7$^$&$N$G!"(B
+% $BBP:v$7$^$9!#(B(Issue \#78)
+%
+% $B$J$*!"(B\LaTeXe\ 2015/01/01--2016/03/31 patch level 3$B$G$O(B
+%\begin{verbatim}
+%   ! Output loop---100 consecutive dead cycles.
+%\end{verbatim}
+% $B$N%(%i!<$,=P$F$$$^$7$?!#(B
+% $B$=$l$h$j@N$NHG$G$O6uGr%Z!<%8$OH/@8$7$^$;$s!#(B
+%
+% $BBP:vJ}K!$O!"(B\file{ltoutput.dtx}$B$GDj5A$5$l$F$$$k(B|\@vtryfc|$B$K(B
+% |\ifydir\else\hskip\z@\fi|$B$NDI2C$G$9!J(B|\@makecol|$B$HF1MM!K!#(B
+% \changes{v1.3g}{2020/09/28}{$B=DAH$G6u$N%U%m!<%H$@$1$N%Z!<%8$N(B
+%    $B%U%C%?(B(Issue 78)}
+%    \begin{macrocode}
+%<platexrelease>\plIncludeInRelease{2020/10/01}{\@vtryfc}
+%<platexrelease>                               {Empty float}%
+%<*plcore|platexrelease>
+\def\@vtryfc #1{%
+  \global\setbox\@outputbox\vbox{\ifydir\else\hskip\z@\fi}%
+  \let\@elt\@wtryfc
+  \@flsucceed
+  \global\setbox\@outputbox \vbox to\@colht{%
+    \vskip \@fptop
+    \vskip -\@fpsep
+    \unvbox \@outputbox
+    \vskip \@fpbot}%
+  \let\@elt\relax
+  \xdef #1{\@failedlist\@flfail}%
+  \xdef\@freelist{\@freelist\@flsucceed}}
+%</plcore|platexrelease>
+%<platexrelease>\plEndIncludeInRelease
+%<platexrelease>\plIncludeInRelease{0000/00/00}{\@vtryfc}
+%<platexrelease>                               {LaTeX2e original}%
+%<platexrelease>\def\@vtryfc #1{%
+%<platexrelease>  \global\setbox\@outputbox\vbox{}%
+%<platexrelease>  \let\@elt\@wtryfc
+%<platexrelease>  \@flsucceed
+%<platexrelease>  \global\setbox\@outputbox \vbox to\@colht{%
+%<platexrelease>    \vskip \@fptop
+%<platexrelease>    \vskip -\@fpsep
+%<platexrelease>    \unvbox \@outputbox
+%<platexrelease>    \vskip \@fpbot}%
+%<platexrelease>  \let\@elt\relax
+%<platexrelease>  \xdef #1{\@failedlist\@flfail}%
+%<platexrelease>  \xdef\@freelist{\@freelist\@flsucceed}}
+%<platexrelease>\plEndIncludeInRelease
 %    \end{macrocode}
 % \end{macro}
 %
@@ -798,6 +870,7 @@
 % |\iftombow|$B$O%H%s%\$r=PNO$9$k$+$I$&$+!"(B|\iftombowdate|$B$O(BDVI$B$r:n@.$7$?(B
 % $BF|IU$r%H%s%\$NOF$K=PNO$9$k$+$I$&$+$r<($9$?$a$KMQ$$$^$9!#(B
 %    \begin{macrocode}
+%<*plcore>
 \newif\iftombow \tombowfalse
 \newif\iftombowdate \tombowdatetrue
 %    \end{macrocode}
@@ -1139,7 +1212,7 @@
 % \end{macro}
 % \end{macro}
 %
-%  \begin{macro}{\@tombowreset@@paper}
+% \begin{macro}{\@tombowreset@@paper}
 % $B%H%s%\=PNO%*%W%7%g%s$,;XDj$5$l$F$$$k>l9g$K(B
 % $BMQ;f%5%$%:$r:F@_Dj$9$kL?Na$G$9!#(B
 % |\@outputpage|$B$X2C$($kJQ99$r4J7i$K$9$k$?$a!"J,N%$7$?>e$G(B
@@ -1169,17 +1242,21 @@
 %<platexrelease>\plEndIncludeInRelease
 %<*plcore>
 %    \end{macrocode}
-%  \end{macro}
+% \end{macro}
 %
-%  \begin{macro}{\@shipoutsetup}
+%
+% \subsection{$B=PNO%k!<%A%s(B}
+% $B$3$3$G<B:]$K%H%s%\$r=PNO$7$^$9!#(B
+%
+% \begin{macro}{\@shipoutsetup}
 % \changes{v1.1i}{1998/02/03}{Command removed}
 % |\@outputpage|$BFb$KA^F~$7$?$N$G:o=|$7$^$7$?!#(B
-%  \end{macro}
+% \end{macro}
 %
 % \begin{macro}{\@outputpage}
 % |\textwidth|$B$H(B|\textheight|$B$N8r49$O!"(B|\@shipoutsetup|$BFb$G$O9T$J$$$^$;$s!#(B
 % $B$J$<$J$i!"(B|\@shipoutsetup|$B%^%/%m$,<B9T$5$l$k$H$-$O!"(B
-% |\shipout|$B$5$l$k(Bvbox$B$NCf$G$"$j!"$3$N$H$-$O2#AH%b!<%I$G$9$N$G!"(B
+% |\shipout|$B$5$l$k(B|\vbox|$B$NCf$G$"$j!"$3$N$H$-$O2#AH%b!<%I$G$9$N$G!"(B
 % $B$D$M$K(B|\iftdir|$B$O56$HH=CG$5$l!"=D$H2#$N%5%$%:$r8r49$G$-$J$$$+$i$G$9!#(B
 %
 % $B$J$*!"$3$NJQ99$r%m!<%+%k$J$b$N$K$9$k$?$a$K!"(B
@@ -1434,6 +1511,10 @@
 % \end{macro}
 %
 % \begin{macro}{\AtBeginDvi}
+% \LaTeXe{}$B$N%P!<%8%g%s$,(B2020-02-02$B$^$G$N>l9g!'(B
+% |\AtBeginDvi|$B$,!V(B|\unvbox|$B$7$F$+$i:F$S(B|\vbox|$B$9$k!W$H$$$&F0:n$N$?$a!"(B
+% $B:FDj5A$,I,MW$G$9!#(B
+% \begin{quote}
 % p\LaTeX{}$B$N=PNO%k!<%A%s$N(B|\@outputpage|$B$G$O!"(B|\shipout|$B$9$k(Bvbox$B$NCf?H$K(B
 % |\yoko|$B$r;XDj$7$F$$$^$9!#$3$N$?$a!"(B|\AtBeginDocument{\AtBeginDvi{}}|$B$H$$$&(B
 % $B%3!<%I$r=q$/$H(B\texttt{Incompatible direction list can't be unboxed.}$B$H$$$&(B
@@ -1445,40 +1526,137 @@
 % |\@begindvibox|$B$O!J6u$G$J$$8B$j!K>o$K2#AH$G$J$1$l$P$J$i$J$$(B
 % \end{center}
 % $B$H2>Dj$7$^$9!#$3$N2>Dj$K=>$$!"(B|\AtBeginDvi|$B$r:FDj5A$7$^$9!#(B
+% \end{quote}
 % \changes{v1.2f}{2016/06/30}{\cs{@begindvibox}$B$r>o$K2#AH$K(B}
 % \changes{v1.3c}{2019/09/16}{Make \cs{AtBeginDvi} robust
 %    (sync with ltoutput.dtx 2019/08/27 v1.4e)}
+%
+% \LaTeXe~2020-10-01$B0J9_!'(B|\AtBeginDvi|$B$O%U%C%/$K$I$s$I$s%3!<%I$rDI2C$7$F(B
+% $B$$$/$@$1$G$9$N$G!":FDj5A$OITMW$G$9!#0lJ}!"Be$o$j$K(B
+% |\__shipout_execute_cont:|$B$r:FDj5A$9$kI,MW$,$"$j$^$9!#(B
+% \changes{v1.3f}{2020/09/26}{\cs{AtBeginDvi}$B$r:FDj5A$7$J$$(B
+%    (checked ltshipout.dtx 2020/09/21 v1.0c)}
 %    \begin{macrocode}
 %</plcore>
-%<platexrelease>\plIncludeInRelease{2019/10/01}{\AtBeginDvi}
-%<platexrelease>                   {Make robust}%
+%<platexrelease>\plIncludeInRelease{2020/10/01}{\AtBeginDvi}
+%<platexrelease>                   {Adapt to new shipout code}%
 %<*plcore|platexrelease>
+\chardef\pltx@AtBeginDvi@untouched\z@
+% for LaTeX2e 2020-10-01 or later
+\ifdefined\ExplSyntaxOn %--- expl3 available BEGIN
+\ExplSyntaxOn
+\if_cs_exist:N \__shipout_add_firstpage_material:Nn
+  \chardef\pltx@AtBeginDvi@untouched\@ne
+%<platexrelease>\DeclareRobustCommand \AtBeginDvi
+%<platexrelease>  {\__shipout_add_firstpage_material:Nn \AtBeginDvi}
+\fi:
+\ExplSyntaxOff
+\fi                     %--- expl3 available END
+% for LaTeX2e 2020-02-02 PL5 or older
+\ifnum\pltx@AtBeginDvi@untouched>\z@\else
 \DeclareRobustCommand \AtBeginDvi [1]{%
   \global \setbox \@begindvibox
-    \vbox{\yoko \unvbox \@begindvibox #1}%
-}
+    \vbox{\yoko \unvbox \@begindvibox #1}}%
+\fi
+% done
+\let\pltx@AtBeginDvi@untouched\@undefined
 %</plcore|platexrelease>
 %<platexrelease>\plEndIncludeInRelease
+%<platexrelease>\plIncludeInRelease{2019/10/01}{\AtBeginDvi}
+%<platexrelease>                   {Make robust}%
+%<platexrelease>\DeclareRobustCommand \AtBeginDvi [1]{%
+%<platexrelease>  \global \setbox \@begindvibox
+%<platexrelease>    \vbox{\yoko \unvbox \@begindvibox #1}}
+%<platexrelease>\plEndIncludeInRelease
 %<platexrelease>\plIncludeInRelease{2016/07/01}{\AtBeginDvi}
 %<platexrelease>                   {Fix for incompatible direction}%
 %<platexrelease>\def \AtBeginDvi #1{%
 %<platexrelease>  \global \setbox \@begindvibox
-%<platexrelease>    \vbox{\yoko \unvbox \@begindvibox #1}%
-%<platexrelease>}
+%<platexrelease>    \vbox{\yoko \unvbox \@begindvibox #1}}
 %<platexrelease>\expandafter \let \csname AtBeginDvi \endcsname \@undefined
 %<platexrelease>\plEndIncludeInRelease
 %<platexrelease>\plIncludeInRelease{0000/00/00}{\AtBeginDvi}
 %<platexrelease>                   {LaTeX2e original}%
 %<platexrelease>\def \AtBeginDvi #1{%
 %<platexrelease>  \global \setbox \@begindvibox
-%<platexrelease>    \vbox{\unvbox \@begindvibox #1}%
-%<platexrelease>}
+%<platexrelease>    \vbox{\unvbox \@begindvibox #1}}
 %<platexrelease>\expandafter \let \csname AtBeginDvi \endcsname \@undefined
 %<platexrelease>\plEndIncludeInRelease
 %<*plcore>
 %    \end{macrocode}
 % \end{macro}
 %
+% \begin{macro}{shipout-execute-cont}
+% \LaTeXe~2020-10-01$B0J9_!'(B\file{ltshipout.dtx}$B$,%Y!<%9$G$9!#(B
+% $B$?$@$7!"=DAH%/%i%9$G$bDL$k$h$&$K$9$k$?$a!"0J2<$NJ}K!$r:N$j$^$9!#(B
+% \begin{itemize}
+% \item |\shipout|$B<B9T;~$NAHJ}8~$,2#AH$J$i!"(B|\yoko|$B$r<B9T$;$:$=$N$^$^!#(B
+% \item $B2#AH$G$J$$>l9g$O(B|\__shipout_execute_cont:|$B$r2#AH%\%C%/%9(B\\
+%       |\l__platex_shipout_dummy_box|$B$G3g$C$F<B9T$9$k!J"(!K!#(B
+% \item |\l_shipout_box|$B$,2#AH$G$J$$>l9g$O;vA0$K2#AH2=$9$k!#(B
+% \end{itemize}
+% $BCm0U!'>e5-"($N<BAu$K$h$j!"=DAH%/%i%9$G$O(B
+% $B!V(B|\AtBeginShipout|$B$NCf?H$,30It?bD>%b!<%I$G<B9T$5$l$k$3$H!W$r(B
+% $BA[Dj$7$?;HMQ!JNc!'(Bplatex-tools issue \#15$B!K$O%5%]!<%H$5$l$^$;$s!#(B
+% ^^A $B=>Mh$N(B\file{pxatbegshi}$B%Q%C%1!<%8$K$bF1MM$N@)Ls$,$"$j$^$7$?!#(B
+% ^^A $BK\Ev$O!"=hM}=*N;;~$K(B|\box\l__platex_shipout_dummy_box|$B$7$F(B
+% ^^A $B%a%$%s?bD>%j%9%H$KCf?H$rLa$7$?$$$N$G$9$,!"(B
+% ^^A $B$J$<$+L58B%k!<%W$,5/$-$k$?$a<B9T$7$F$$$^$;$s!#(B
+% \changes{v1.3f}{2020/09/26}{\cs{shipout-execute-cont}$B$r:FDj5A(B
+%    (checked ltshipout.dtx 2020/09/21 v1.0c)}
+% \changes{v1.3g}{2020/09/28}{\file{plexpl3}$B$GDj5A$7$?L?Na$r;HMQ(B}
+%    \begin{macrocode}
+%</plcore>
+%<platexrelease>\plIncludeInRelease{2020/10/01}{\__shipout_execute_cont:}
+%<platexrelease>                   {Adapt to new shipout code}%
+%<*plcore|platexrelease>
+\ifdefined\ExplSyntaxOn %--- expl3 available BEGIN
+\ExplSyntaxOn
+\if_cs_exist:N \__shipout_execute_cont:
+\cs_new_eq:NN \__platex_original_shipout_execute_cont: \__shipout_execute_cont:
+\box_new:N \l__platex_shipout_dummy_box
+\cs_set:Npn \__shipout_execute_cont:
+  {
+    % if \l_shipout_box is not a \yoko-box (= horizontal writing),
+    % then make it a \yoko-box behorehand.
+    \platex_if_box_yoko:NF \l_shipout_box {
+      \vbox_set:Nn \l_shipout_box
+        {
+            \platex_direction_yoko:
+            \box_use:N \l_shipout_box
+        }
+    }
+    % if the current direction is not \yoko,
+    % then enclose \__shipout_execute_cont: with
+    % a dummy \yoko-box named \l__platex_shipout_dummy_box.
+    \platex_if_direction_yoko:TF {
+      \__platex_original_shipout_execute_cont:
+    }{
+      \vbox_set:Nn \l__platex_shipout_dummy_box
+        {
+          \platex_direction_yoko:
+          \__platex_original_shipout_execute_cont:
+        }
+      % [Limitation] the code above may discard some contents,
+      % so we'd like to put it back by \box\l__platex_shipout_dummy_box.
+      % however, an infinite loop occurs if we uncomment the line below
+      % so we can't.
+      %\box_use:N \l__platex_shipout_dummy_box
+    }
+  }
+\fi:
+\ExplSyntaxOff
+\fi                     %--- expl3 available END
+%</plcore|platexrelease>
+%<platexrelease>\plEndIncludeInRelease
+%<platexrelease>\plIncludeInRelease{0000/00/00}{\__shipout_execute_cont:}
+%<platexrelease>                   {LaTeX2e original}%
+%<platexrelease>% do nothing
+%<platexrelease>\plEndIncludeInRelease
+%<*plcore>
+%    \end{macrocode}
+% \end{macro}
+%
 %
 % \subsection{$B5SCm%^%/%m(B}
 % $B5SCm$rAH$_N)$F$kItJ,$N%^%/%m$r:FDj5A$7$^$9!#(B
diff --git a/Master/texmf-dist/source/platex/base/plexpl3.dtx b/Master/texmf-dist/source/platex/base/plexpl3.dtx
new file mode 100644
index 00000000000..e023cd33033
--- /dev/null
+++ b/Master/texmf-dist/source/platex/base/plexpl3.dtx
@@ -0,0 +1,125 @@
+% \iffalse meta-comment
+%% File: plexpl3.dtx
+%
+%  Copyright (c) 2020 Japanese TeX Development Community
+%
+%  This file is part of the pLaTeX2e system (community edition).
+%  -------------------------------------------------------------
+%
+% \fi
+%
+%
+% \iffalse
+% \changes{v1.0}{2020/09/28}{$B=iHG!'(Bp\TeX{}$B$N>r7oJ8$rDj5A(B}
+% \fi
+%
+% \iffalse
+%<*driver>
+\NeedsTeXFormat{pLaTeX2e}
+\ProvidesFile{plexpl3.dtx}[2020/09/28 v1.0 expl3 additions]
+\documentclass{jltxdoc}
+\GetFileInfo{plexpl3.dtx}
+\author{Japanese \TeX\ Development Community}
+\title{The \textsf{plexpl3} package}
+\date{$B:n@.F|!'(B\filedate}
+\begin{document}
+  \newcommand\Lpack[1]{\textsf{#1}}
+  \maketitle
+  \DocInput{\filename}
+\end{document}
+%</driver>
+% \fi
+%
+% \LaTeX3 (expl3)$B$GMQ0U$5$l$F$$$J$$!V(Bp\TeX{}$B7ONs$NFH<+5!G=!W$r(B
+% expl3$B$NJ8K!$G;H$($k$h$&$K$9$k%3!<%I$G$9!#(B
+% p\LaTeXe~2020-10-01$B$G?7@_$7$^$7$?!#(B
+%
+% \setcounter{StandardModuleDepth}{1}
+% \StopEventually{}
+%
+% \section{$B%3!<%I(B}
+%
+% $B%Q%C%1!<%8$H$7$F@k8@$7$^$9!#(B
+% $B$3$l$G!"(Bp\LaTeXe~2020-04-12$B0JA0$G$b(B
+% \file{plexpl3.sty}$B$H(B\file{plexpl3.ltx}$B$@$1(B
+% $BF~<j$9$l$PF1Ey$N5!G=$,;H$($^$9!#(B
+%    \begin{macrocode}
+%<*package>
+\NeedsTeXFormat{pLaTeX2e}
+\RequirePackage{expl3}
+\ProvidesExplPackage{plexpl3}{2020-09-28}{1.0}
+  {pTeX/upTeX-specific additions to expl3}
+%</package>
+%    \end{macrocode}
+%
+% \LaTeXe~2020-02-02$B0J9_$G$O(B\file{expl3}$B$,I8=`$G(B
+% $B%U%)!<%^%C%H$KFI$_9~$^$l$F$$$^$9!#$3$N>l9g$O(B
+% \file{plexpl3}$B$N5!G=$r%U%)!<%^%C%H$K<h$j9~$_$^$9!#(B
+%    \begin{macrocode}
+%<plcore>\ifdefined\ExplSyntaxOn %--- expl3 available BEGIN
+%<plcore>\ExplSyntaxOn
+%<*plcore|package>
+\input plexpl3.ltx
+%</plcore|package>
+%<plcore>\ExplSyntaxOff
+%<plcore>\fi                     %--- expl3 available END
+%    \end{macrocode}
+%
+% \file{platexrelease}$B$N(Broll-forward$B$K$bEPO?$7$^$9!#(B
+%    \begin{macrocode}
+%<platexrelease>\plIncludeInRelease{2020/10/01}%
+%<platexrelease>                   {plexpl3}{Pre-load plexpl3}%
+%<platexrelease>\RequirePackage{plexpl3}
+%<platexrelease>\plEndIncludeInRelease
+%<platexrelease>\plIncludeInRelease{0000/00/00}%
+%<platexrelease>                   {plexpl3}{Not loading plexpl3}%
+%<platexrelease>% Nothing to do
+%<platexrelease>\plEndIncludeInRelease
+%    \end{macrocode}
+%
+% $B0J2<$N%3!<%I$O(B\file{plexpl3.ltx}$B$K=q$-=P$7$^$9!#(B
+% $B%U%)!<%^%C%H$H%Q%C%1!<%8$+$i$N=EJ#FI$_9~$_$O6X;_$7$^$9!#(B
+%    \begin{macrocode}
+%<*code>
+\cs_if_exist:NT \__platex_expl_loaded:
+  {
+    \GenericInfo{}
+      {Skipping:~ plexpl3~ code~ already~ part~ of~ the~ format}%
+    \endinput
+  }
+\cs_new:Npn \__platex_expl_loaded: {  }
+%    \end{macrocode}
+%
+% \section{p\TeX{}$B7ONs$N>r7oJ8(B}
+%
+% p\TeX{}$B7ONs$N>r7oJ8$r(Bexpl3$B$NJ8K!$K$7$^$9!#(B
+% \changes{v1.0}{2020/09/28}{$B=iHG!'(Bp\TeX{}$B$N>r7oJ8$rDj5A(B}
+%    \begin{macrocode}
+%% additions to l3box.dtx: writing directions (pTeX/upTeX-specific)
+\cs_set_eq:NN \platex_direction_yoko: \tex_yoko:D
+\cs_set_eq:NN \platex_direction_tate: \tex_tate:D
+\cs_set_eq:NN \platex_direction_dtou: \tex_dtou:D
+%
+\prg_new_conditional:Npnn \platex_if_direction_yoko: { p, T, F, TF }
+  { \tex_ifydir:D \prg_return_true: \else: \prg_return_false: \fi: }
+\prg_new_conditional:Npnn \platex_if_direction_tate: { p, T, F, TF }
+  { \tex_iftdir:D \prg_return_true: \else: \prg_return_false: \fi: }
+\prg_new_conditional:Npnn \platex_if_direction_dtou: { p, T, F, TF }
+  { \tex_ifddir:D \prg_return_true: \else: \prg_return_false: \fi: }
+%
+\prg_new_conditional:Npnn \platex_if_box_yoko:N #1 { p, T, F, TF }
+  { \tex_ifybox:D #1 \prg_return_true: \else: \prg_return_false: \fi: }
+\prg_new_conditional:Npnn \platex_if_box_tate:N #1 { p, T, F, TF }
+  { \tex_iftbox:D #1 \prg_return_true: \else: \prg_return_false: \fi: }
+\prg_new_conditional:Npnn \platex_if_box_dtou:N #1 { p, T, F, TF }
+  { \tex_ifdbox:D #1 \prg_return_true: \else: \prg_return_false: \fi: }
+%    \end{macrocode}
+%
+% $B0J>e$G$9!#(B
+%    \begin{macrocode}
+%</code>
+%    \end{macrocode}
+%
+% \Finale
+%
+\endinput
diff --git a/Master/texmf-dist/source/platex/base/plfmt.ins b/Master/texmf-dist/source/platex/base/plfmt.ins
index bd64099ef5b..0d23101cba0 100644
--- a/Master/texmf-dist/source/platex/base/plfmt.ins
+++ b/Master/texmf-dist/source/platex/base/plfmt.ins
@@ -8,7 +8,7 @@
 \preamble
 
 Copyright (c) 2010 ASCII MEDIA WORKS
-Copyright (c) 2016-2018 Japanese TeX Development Community
+Copyright (c) 2016-2020 Japanese TeX Development Community
 
 This file is part of the pLaTeX2e system (community edition).
 -------------------------------------------------------------
@@ -18,6 +18,7 @@ This file is part of the pLaTeX2e system (community edition).
 \generate{
   \file{platex.ltx}{\from{platex.dtx}{plcore}}
   \file{plcore.ltx}{\from{plvers.dtx}{plcore}
+          \from{plexpl3.dtx}{plcore}
           \from{plfonts.dtx}{plcore}
           \from{plcore.dtx}{plcore}
           \from{plvers.dtx}{plfinal}}
@@ -30,6 +31,8 @@ This file is part of the pLaTeX2e system (community edition).
   \file{plext.sty}{\from{plext.dtx}{package}}
   \file{ptrace.sty}{\from{plfonts.dtx}{trace}}
   \file{pfltrace.sty}{\from{plcore.dtx}{fltrace,trace}}
+  \file{plexpl3.sty}{\from{plexpl3.dtx}{package}}
+  \file{plexpl3.ltx}{\from{plexpl3.dtx}{code}}
 }
 
 \endbatchfile
diff --git a/Master/texmf-dist/source/platex/base/plfonts.dtx b/Master/texmf-dist/source/platex/base/plfonts.dtx
index 12efc700e84..e68de15a597 100644
--- a/Master/texmf-dist/source/platex/base/plfonts.dtx
+++ b/Master/texmf-dist/source/platex/base/plfonts.dtx
@@ -160,13 +160,19 @@
 % \changes{v1.7f}{2020/04/07}{Support legacy use of \cs{bfdefault}
 %    and \cs{mddefault}, use \cs{@setYYseriesdefaultshook}
 %    (sync with ltfssini.dtx 2020/03/19 v3.1k and 2020/04/06 v3.1m)}
+% \changes{v1.7g}{2020/04/14}{Small update for speed.
+%    (sync with ltfssdcl.dtx 2020/04/13 v3.0v)}
+% \changes{v1.7h}{2020/09/28}{Handling \cs{seriesdefault} changes
+%    (sync with ltfssini.dtx 2020/04/13 v3.1n)}
+% \changes{v1.7h}{2020/09/28}{New hook management interface
+%    (sync with ltfssini.dtx 2020/08/21 v3.2b)}
 % \fi
 %
 % \iffalse
 %<*driver>
 \NeedsTeXFormat{pLaTeX2e}
 % \fi
-\ProvidesFile{plfonts.dtx}[2020/04/07 v1.7f pLaTeX New Font Selection Scheme]
+\ProvidesFile{plfonts.dtx}[2020/09/28 v1.7h pLaTeX New Font Selection Scheme]
 % \iffalse
 \documentclass{jltxdoc}
 \GetFileInfo{plfonts.dtx}
@@ -2966,10 +2972,15 @@
 % $B$J$j$^$7$?!#(Bltfssini.dtx 1995/10/16 v3.0f$B$NJQ99$b;29M!#!K(B
 % \changes{v1.7a}{2020/03/06}{\cs{@defaultfamilyhook}$B$r3hMQ(B
 %    (sync with ltfssini.dtx 2020/02/10 v3.1h)}
+%
+% \LaTeXe~2020-10-01$B$G$O(B|\AddToHook|$B$,;H$($^$9!#(B
+% \changes{v1.7h}{2020/09/28}{New hook management interface
+%    (sync with ltfssini.dtx 2020/08/21 v3.2b)}
 %    \begin{macrocode}
 %<platexrelease>\plIncludeInRelease{2020/04/12}{\normalfont}
 %<platexrelease>                   {Use \@defaultfamilyhook}%
 %<*plcore|platexrelease>
+\ifx\AddToHook\@undefined % --- for 2020-02-02 or older BEGIN
 \ifx\@defaultfamilyhook\@undefined  % old
 \DeclareRobustCommand\normalfont{%
     \kanjiencoding{\kanjiencodingdefault}%
@@ -2995,7 +3006,23 @@
     \edef\k@series{\kanjiseriesdefault}%
     \edef\k@shape{\kanjishapedefault}%
 }
-\fi
+\fi                                 % done
+\else % --- for 2020-02-02 or older END & for 2020-10-01 BEGIN
+%<platexrelease>\DeclareRobustCommand\normalfont{%
+%<platexrelease>   \fontencoding\encodingdefault
+%<platexrelease>   \edef\f@family{\familydefault}%
+%<platexrelease>   \edef\f@series{\seriesdefault}%
+%<platexrelease>   \edef\f@shape{\shapedefault}%
+%<platexrelease>   \UseHook{normalfont}%
+%<platexrelease>   \@defaultfamilyhook        % hookname from 2020/02 will vanish
+%<platexrelease>   \selectfont}
+\AddToHook{normalfont}{%
+    \kanjiencoding{\kanjiencodingdefault}%
+    \edef\k@family{\kanjifamilydefault}%
+    \edef\k@series{\kanjiseriesdefault}%
+    \edef\k@shape{\kanjishapedefault}%
+}
+\fi % --- for 2020-10-01 END
 \adjustbaseline
 \let\reset@font\normalfont
 %</plcore|platexrelease>
@@ -3071,7 +3098,7 @@
 %
 % \begin{macro}{\expand@font@defaults}
 % $B%U%!%_%j$N%G%U%)%k%H$r40A4E83+$7$^$9!#(B
-% $B$^$:!"%*%j%8%J%k$N(B\LaTeX{}$B$NDj5A!J(Bltfssini.dtx 2020/04/06 v3.1m$B0J9_!K$r(B
+% $B$^$:!"%*%j%8%J%k$N(B\LaTeX{}$B$NDj5A!J(Bltfssini.dtx 2020/08/21 v3.2b$B0J9_!K$r(B
 % $B:\$;$F$*$-$^$9!#(B
 %    \begin{macrocode}
 %\def\expand@font@defaults{%
@@ -3080,71 +3107,93 @@
 %  \edef\ttdef@ult{\ttdefault}%
 %  \series@maybe@drop@one@m\bfdefault\bfdef@ult % !! changed 2020/02/25 v3.1j
 %  \series@maybe@drop@one@m\mddefault\mddef@ult % !! changed 2020/02/25 v3.1j
-%  \edef\famdef@ult{\familydefault}%
-%  \@expandfontdefaultshook                     % !! added 2020/04/06 v3.1m
+% %\edef\famdef@ult{\familydefault}% !! deleted 2020/04/13 v3.1n
+% %\@expandfontdefaultshook        % !! only in 2020/04/06 v3.1m
+%  \UseHook{expand@font@defaults}%   !! new in 2020/08/21 v3.2b
 %}
 %    \end{macrocode}
 % p\LaTeX{}$B$G$O!"0J2<$N%3!<%I$rKvHx$KDI2C$7$^$9!#(B
-% ^^A  ltfssini.dtx 2020/04/06 v3.1m $B$K4p$E$1$P(B |\@expandfontdefaultshook| $B$r(B
-% ^^A  $B;H$&$3$H$b$G$-$k$,!"$H$j$"$($:(B |\g@addto@macro| $B$GKvHxDI2C$GLdBj$J$$!#(B
-%    \begin{macrocode}
-\ifx\expand@font@defaults\@undefined\else  % 2020-02-02
+% \file{ltfssini.dtx} 2020/04/13 v3.1n$B$G(B|latex3/latex2e#315|$BBP:v$,(B
+% $BF~$j$^$7$?$N$G!"$=$NA08e$G(B|\expand@font@defaults|$B$*$h$S(B
+% |\init@series@setup|$B$X$NDI2CFbMF$,JQ$o$j$^$9!#(B
+% ^^A  $B=>Mh$O(B |\init@series@setup| $B$+$i8F$S=P$5$l$k(B
+% ^^A    |\expand@font@defaults| $B$,(B |\famdef@ult| $B$r@_Dj$7$F$$$?!#(B
+% ^^A  $B?7HG$O(B |\init@series@setup| $B$+$i$b$O$d(B
+% ^^A    |\expand@font@defaults| $B$O8F$S=P$5$:!"Be$o$j$K(B
+% ^^A    |\init@series@setup| $B$G0lEY(B |\reset@font| $B$r<B9T$7!"(B
+% ^^A    $B$=$l$K4p$E$$$F(B |\seriesdefault| $B$r@_Dj$9$k!#(B
+% \changes{v1.7h}{2020/09/28}{New hook management interface
+%    (sync with ltfssini.dtx 2020/08/21 v3.2b)}
+%    \begin{macrocode}
+\ifx\expand@font@defaults\@undefined\else %<*2020-02-02|2020-10-01>
+\ifx\AddToHook\@undefined % --- for 2020-02-02 BEGIN
 \g@addto@macro\expand@font@defaults{%
   \edef\mcdef@ult{\mcdefault}%
   \edef\gtdef@ult{\gtdefault}%
   \edef\kanjidef@ult{\kanjifamilydefault}%
 }
-\fi
+\else % --- for 2020-02-02 END & for 2020-10-01 BEGIN
+\AddToHook{expand@font@defaults}{%
+  \edef\mcdef@ult{\mcdefault}%
+  \edef\gtdef@ult{\gtdefault}%
+ %\edef\kanjidef@ult{\kanjifamilydefault}% !! sync with 2020/04/13 v3.1n
+}
+\fi % --- for 2020-10-01 END
+\fi %</2020-02-02|2020-10-01>
 %    \end{macrocode}
-%
 % \end{macro}
 %
 % \begin{macro}{\bfseries}
 % \begin{macro}{\mdseries}
 % $B%U%!%_%j$4$H$N@_DjCM$r;2>H$7$^$9!#(B
-% $B$^$:!"%*%j%8%J%k$N(B\LaTeX{}$B$NDj5A!J(Bltfssini.dtx 2020/04/06 v3.1m$B0J9_!K$r(B
+% $B$^$:!"%*%j%8%J%k$N(B\LaTeX{}$B$NDj5A!J(Bltfssini.dtx 2020/09/30 v3.2d$B0J9_!K$r(B
 % $B:\$;$F$*$-$^$9!#(B
 %    \begin{macrocode}
 %\DeclareRobustCommand\bfseries{%
 %  \not@math@alphabet\bfseries\mathbf
 %  \expand@font@defaults
-%  \ifx\bfdefault\bfdefault@previous\else
+%  \ifx\bfdefault\bfdefault@previous\else % new in 2020/03/19 v3.1k
 %    \expandafter\def\expandafter\bfdefault
 %                    \expandafter{\bfdefault\@empty}%
-%    \let\bfseries@previous\bfdefault
+%    \let\bfdefault@previous\bfdefault % bugfix in 2020/09/30 v3.2d
 %    \let\bfseries@rm\bfdef@ult
 %    \let\bfseries@sf\bfdef@ult
 %    \let\bfseries@tt\bfdef@ult
-%    \@setbfseriesdefaultshook % !! added 2020/04/06 v3.1m
+%    %\@setbfseriesdefaultshook % !! only in 2020/04/06 v3.1m
+%    \UseHook{bfseries/defaults}% !! new in 2020/08/21 v3.2b
 %  \fi
 %    \ifx\f@family\rmdef@ult      \fontseries\bfseries@rm
 %    \else\ifx\f@family\sfdef@ult \fontseries\bfseries@sf
 %    \else\ifx\f@family\ttdef@ult \fontseries\bfseries@tt
 %    \else                        \fontseries\bfdefault
 %    \fi\fi\fi
+%  \UseHook{bfseries}% !! new in 2020/08/21 v3.2b
 %  \selectfont
 %}
 %\DeclareRobustCommand\mdseries{%
 %  \not@math@alphabet\mdseries\relax
 %  \expand@font@defaults
-%  \ifx\mddefault\mddefault@previous\else
+%  \ifx\mddefault\mddefault@previous\else % new in 2020/03/19 v3.1k
 %    \expandafter\def\expandafter\mddefault
 %                    \expandafter{\mddefault\@empty}%
-%    \let\mdseries@previous\mddefault
+%    \let\mddefault@previous\mddefault % bugfix in 2020/09/30 v3.2d
 %    \let\mdseries@rm\mddef@ult
 %    \let\mdseries@sf\mddef@ult
 %    \let\mdseries@tt\mddef@ult
-%    \@setmdseriesdefaultshook % !! added 2020/04/06 v3.1m
+%    %\@setmdseriesdefaultshook % !! only in 2020/04/06 v3.1m
+%    \UseHook{mdseries/defaults}% !! new in 2020/08/21 v3.2b
 %  \fi
 %    \ifx\f@family\rmdef@ult      \fontseries\mdseries@rm
 %    \else\ifx\f@family\sfdef@ult \fontseries\mdseries@sf
 %    \else\ifx\f@family\ttdef@ult \fontseries\mdseries@tt
 %    \else                        \fontseries\mddefault
 %    \fi\fi\fi
+%  \UseHook{mdseries}% !! new in 2020/08/21 v3.2b
 %  \selectfont
 %}
 %    \end{macrocode}
 % $B0J2<$G(Bp\LaTeX{}$BMQ$K:FDj5A$7$^$9!#(B
+% $B$^$:(B\LaTeXe~2020-02-02$B%Y!<%9!#(B
 % \changes{v1.6y}{2020/02/24}{Make the \cs{ifx} selection outside of
 %    \cs{fontseries} argument so that it is not done several times
 %    (sync with ltfssini.dtx 2020/02/18 v3.1i)}
@@ -3152,61 +3201,82 @@
 %    and \cs{mddefault}, use \cs{@setYYseriesdefaultshook}
 %    (sync with ltfssini.dtx 2020/03/19 v3.1k and 2020/04/06 v3.1m)}
 %    \begin{macrocode}
-\ifx\bfseries@rm\@undefined  % old
-\let\pltx@fontseries@saved\@undefined
-\let\pltx@patch@bfseries\@undefined
-\let\pltx@patch@mdseries\@undefined
-\else                        % 2020-02-02
-\let\pltx@fontseries@saved\fontseries
-\def\pltx@patch@bfseries\not@math@alphabet#1#2#3\selectfont{%
- \long\expandafter\def\csname bfseries \endcsname{%
-  \not@math@alphabet#1#2% should be \bfseries\mathbf
-  % \fontseries of pLaTeX tries to change both Latin and Japanese;
-  % here we want only Latin, so use \romanseries
-  \let\fontseries\romanseries
-  #3% contains \fontseries and \@setbfseriesdefaultshook
-  \let\fontseries\pltx@fontseries@saved % recover
+\ifx\bfseries@rm\@undefined\else %<*2020-02-02|2020-10-01>
+\ifx\AddToHook\@undefined % --- for 2020-02-02 BEGIN
+\DeclareRobustCommand\bfseries{%
+  \not@math@alphabet\bfseries\mathbf
+  \expand@font@defaults
+  % changed \fontseries -> \romanseries
+    \ifx\f@family\rmdef@ult      \romanseries\bfseries@rm
+    \else\ifx\f@family\sfdef@ult \romanseries\bfseries@sf
+    \else\ifx\f@family\ttdef@ult \romanseries\bfseries@tt
+    \else                        \romanseries\bfdefault
+    \fi\fi\fi
+%    \end{macrocode}
+% $B$3$3$+$i$,(Bp\LaTeX{}$B$K$h$kDI2C%3!<%I$G$9!#(B
+%    \begin{macrocode}
   % changed \fontseries -> \kanjiseries
     \ifx\k@family\mcdef@ult      \kanjiseries\bfseries@mc
     \else\ifx\k@family\gtdef@ult \kanjiseries\bfseries@gt
     \else                        \kanjiseries\bfdefault
     \fi\fi
+%    \end{macrocode}
+% $B$3$3$^$G!#(B
+%    \begin{macrocode}
   \selectfont
- }%
-}
-\ifx\@setbfseriesdefaultshook\@undefined\else
-\g@addto@macro\@setbfseriesdefaultshook{%
-    \let\bfseries@mc\bfdef@ult
-    \let\bfseries@gt\bfdef@ult
 }
-\fi
-\expandafter\expandafter\expandafter
-  \pltx@patch@bfseries\csname bfseries \endcsname
-\def\pltx@patch@mdseries\not@math@alphabet#1#2#3\selectfont{%
- \long\expandafter\def\csname mdseries \endcsname{%
-  \not@math@alphabet#1#2% should be \mdseries\relax
-  % \fontseries of pLaTeX tries to change both Latin and Japanese;
-  % here we want only Latin, so use \romanseries
-  \let\fontseries\romanseries
-  #3% contains \fontseries and \@setmdseriesdefaultshook
-  \let\fontseries\pltx@fontseries@saved % recover
+\DeclareRobustCommand\mdseries{%
+  \not@math@alphabet\mdseries\relax
+  \expand@font@defaults
+  % changed \fontseries -> \romanseries
+    \ifx\f@family\rmdef@ult      \romanseries\mdseries@rm
+    \else\ifx\f@family\sfdef@ult \romanseries\mdseries@sf
+    \else\ifx\f@family\ttdef@ult \romanseries\mdseries@tt
+    \else                        \romanseries\mddefault
+    \fi\fi\fi
+%    \end{macrocode}
+% $B$3$3$+$i$,(Bp\LaTeX{}$B$K$h$kDI2C%3!<%I$G$9!#(B
+%    \begin{macrocode}
   % changed \fontseries -> \kanjiseries
     \ifx\k@family\mcdef@ult      \kanjiseries\mdseries@mc
     \else\ifx\k@family\gtdef@ult \kanjiseries\mdseries@gt
     \else                        \kanjiseries\mddefault
     \fi\fi
+%    \end{macrocode}
+% $B$3$3$^$G!#(B
+%    \begin{macrocode}
   \selectfont
- }%
 }
-\ifx\@setmdseriesdefaultshook\@undefined\else
-\g@addto@macro\@setmdseriesdefaultshook{%
+%    \end{macrocode}
+% $B<!$K(B\LaTeXe~2020-10-01$B%Y!<%9!#(B|\AddToHook|$B$G==J,$G$9!#(B
+% \changes{v1.7h}{2020/09/28}{New hook management interface
+%    (sync with ltfssini.dtx 2020/08/21 v3.2b)}
+%    \begin{macrocode}
+\else % --- for 2020-02-02 END & for 2020-10-01 BEGIN
+\AddToHook{bfseries/defaults}{%
+    \let\bfseries@mc\bfdef@ult
+    \let\bfseries@gt\bfdef@ult
+}
+\AddToHook{bfseries}{%
+  % changed \fontseries -> \kanjiseries
+    \ifx\k@family\mcdef@ult      \kanjiseries\bfseries@mc
+    \else\ifx\k@family\gtdef@ult \kanjiseries\bfseries@gt
+    \else                        \kanjiseries\bfdefault
+    \fi\fi
+}
+\AddToHook{mdseries/defaults}{%
     \let\mdseries@mc\mddef@ult
     \let\mdseries@gt\mddef@ult
 }
-\fi
-\expandafter\expandafter\expandafter
-  \pltx@patch@mdseries\csname mdseries \endcsname
-\fi
+\AddToHook{mdseries}{%
+  % changed \fontseries -> \kanjiseries
+    \ifx\k@family\mcdef@ult      \kanjiseries\mdseries@mc
+    \else\ifx\k@family\gtdef@ult \kanjiseries\mdseries@gt
+    \else                        \kanjiseries\mddefault
+    \fi\fi
+}
+\fi % --- for 2020-10-01 END
+\fi %</2020-02-02|2020-10-01>
 %    \end{macrocode}
 % \end{macro}
 % \end{macro}
@@ -3333,23 +3403,32 @@
 %
 % \begin{macro}{\init@series@setup}
 % |\begin{document}|$B$G<B9T$5$l$k=i4|2=$G$9!#(B
-% $B$^$:!"%*%j%8%J%k$N(B\LaTeX{}$B$NDj5A$r:\$;$F$*$-$^$9!#(B
+% $B$^$:!"%*%j%8%J%k$N(B\LaTeX{}$B$NDj5A!J(Bltfssini.dtx 2020/04/13 v3.1n$B0J9_!K$r(B
+% $B:\$;$F$*$-$^$9!#(B
 %    \begin{macrocode}
 %\def\init@series@setup{%
 %  \ifx\bfseries@rm@kernel\bfseries@rm
-%    \expandafter\in@\expandafter{\rmdefault}{cmr,cmss,cmtt,lcmss,lcmtt,lmr,lmss,lmtt}%
+%    \expandafter\in@\expandafter{\rmdefault}%
+%                    {cmr,cmss,cmtt,lcmss,lcmtt,lmr,lmss,lmtt}%
 %    \ifin@ \else \def\bfseries@rm{b}\fi\fi
 %  \ifx\bfseries@sf@kernel\bfseries@sf
-%    \expandafter\in@\expandafter{\sfdefault}{cmr,cmss,cmtt,lcmss,lcmtt,lmr,lmss,lmtt}%
+%    \expandafter\in@\expandafter{\sfdefault}%
+%                    {cmr,cmss,cmtt,lcmss,lcmtt,lmr,lmss,lmtt}%
 %    \ifin@ \else \def\bfseries@sf{b}\fi\fi
 %  \ifx\bfseries@tt@kernel\bfseries@tt
-%    \expandafter\in@\expandafter{\ttdefault}{cmr,cmss,cmtt,lcmss,lcmtt,lmr,lmss,lmtt}%
+%    \expandafter\in@\expandafter{\ttdefault}%
+%                    {cmr,cmss,cmtt,lcmss,lcmtt,lmr,lmss,lmtt}%
 %    \ifin@ \else \def\bfseries@tt{b}\fi\fi
-%  \expand@font@defaults
-%  \ifx\famdef@ult\rmdef@ult      \rmfamily
-%  \else\ifx\famdef@ult\sfdef@ult \sffamily
-%  \else\ifx\famdef@ult\ttdef@ult \ttfamily
-%  \fi\fi\fi
+% %\expand@font@defaults  % !! deleted in 2020/04/13 v3.1n BEGIN
+% %\ifx\famdef@ult\rmdef@ult      \rmfamily           % !! CONT
+% %\else\ifx\famdef@ult\sfdef@ult \sffamily           % !! CONT
+% %\else\ifx\famdef@ult\ttdef@ult \ttfamily           % !! CONT
+% %\fi\fi\fi              % !! deleted in 2020/04/13 v3.1n END
+%  \reset@font     % !! added in 2020/04/13 v3.1n BEGIN
+%  \ifx\seriesdefault\seriesdefault@kernel   % !! CONT
+%    \mdseries                               % !! CONT
+%    \let\seriesdefault\f@series             % !! CONT
+%  \fi             % !! added in 2020/04/13 v3.1n END
 %}%
 %    \end{macrocode}
 % $B$3$3$+$i$,(Bp\LaTeX{}$B$K$h$kDI2C%3!<%I$G$9!#(B
@@ -3360,16 +3439,51 @@
 % \end{itemize}
 % $B$K$J$k$3$H$KCm0U$7$^$9!#(B
 % \changes{v1.6w}{2020/02/03}{$B4,$-La$7$N%P%0=$@5(B}
+% \changes{v1.7h}{2020/09/28}{Handling \cs{seriesdefault} changes
+%    (sync with ltfssini.dtx 2020/04/13 v3.1n)}
 %    \begin{macrocode}
-\expandafter\ifx\csname init@series@setup\endcsname\relax\else  % 2020-02-02
+\expandafter\ifx\csname init@series@setup\endcsname\relax
+\else   %<*2020-02-02|2020-10-01>
+\ifx\AddToHook\@undefined % --- for 2020-02-02 BEGIN
 \g@addto@macro\init@series@setup{%
   \ifx\kanjidef@ult\mcdef@ult      \mcfamily
   \else\ifx\kanjidef@ult\gtdef@ult \gtfamily
   \fi\fi
 }%
-\fi
+\else % --- for 2020-02-02 END & for 2020-10-01 BEGIN
+\g@addto@macro\init@series@setup{%
+  % !! sync with 2020/04/13 v3.1n BEGIN
+  \ifx\kanjiseriesdefault\kanjiseriesdefault@kernel
+    \mdseries
+    \let\kanjiseriesdefault\k@series
+  \fi
+  % !! sync with 2020/04/13 v3.1n END
+}%
+\fi % --- for 2020-10-01 END
+\fi     %</2020-02-02|2020-10-01>
+%    \end{macrocode}
+% \end{macro}
+%
+%
+% \begin{macro}{\kanjiseriesdefault}
+% \begin{macro}{\kanjiseriesdefault@kernel}
+% |\kanjiseriesdefault|$B$,(B\file{pldefs.ltx}$B$^$?$O(B\file{pldefs.cfg}$B$G(B
+% $BDj5A$5$l$?8e$K!"$=$NKvHx$K(B|\@empty|$B$rDI2C$7$^$9!#(B
+% $B$3$l$OE83+;~$K>CLG$7$^$9$,!"J8=q$N%W%j%"%s%V%k$GJL$NCM$K(B
+% $BJQ99$5$l$?$+$I$&$+8!CN$G$-$k$h$&$K$J$j$^$9!#(B
+% \changes{v1.7h}{2020/09/28}{Handling \cs{seriesdefault} changes
+%    (sync with ltfssini.dtx 2020/04/13 v3.1n)}
+%    \begin{macrocode}
+\ifx\AddToHook\@undefined
+\else % --- for LaTeX2e 2020-10-01 or later BEGIN
+\def\code@after@pldefs{%
+\expandafter\def\expandafter\kanjiseriesdefault
+  \expandafter{\kanjiseriesdefault\@empty}
+\let\kanjiseriesdefault@kernel\kanjiseriesdefault}
+\fi   % --- for LaTeX2e 2020-10-01 or later END
 %    \end{macrocode}
 % \end{macro}
+% \end{macro}
 %
 %
 % \begin{macro}{\mcfamily}
@@ -3593,14 +3707,16 @@
 % $BJ8=q$N@hF,$G!"OBJ8%G%U%)%k%H%U%)%s%H$NJQ99$,H?1G$5$l$J$$$N$r=$@5$7$^$9!#(B
 % \changes{v1.3g}{1999/04/05}{plpatch.ltx$B$NFbMF$rH?1G!#(B
 %    $B$"$j$,$H$&!";3K\$5$s!#(B}
+% \changes{v1.7g}{2020/04/14}{Small update for speed.
+%    (sync with ltfssdcl.dtx 2020/04/13 v3.0v)}
 %    \begin{macrocode}
 %<*plcore>
 \let\romanprocess@table\process@table
 \def\kanjiprocess@table{%
-  \kanjiencoding{\kanjiencodingdefault}%
-  \kanjifamily{\kanjifamilydefault}%
-  \kanjiseries{\kanjiseriesdefault}%
-  \kanjishape{\kanjishapedefault}%
+  \kanjiencoding\kanjiencodingdefault
+  \edef\k@family{\kanjifamilydefault}%
+  \edef\k@series{\kanjiseriesdefault}%
+  \edef\k@shape{\kanjishapedefault}%
 }
 \def\process@table{%
   \romanprocess@table
diff --git a/Master/texmf-dist/source/platex/base/plnewsc15.tex b/Master/texmf-dist/source/platex/base/plnewsc15.tex
new file mode 100644
index 00000000000..9a8d3954afa
--- /dev/null
+++ b/Master/texmf-dist/source/platex/base/plnewsc15.tex
@@ -0,0 +1,126 @@
+%% <2020-10-01>
+\documentclass{plnews}
+
+\publicationyear{2020}% $BH/9TG/(B
+\publicationmonth{10}% $BH/9T7n(B
+\publicationissue{c15}% $BHV9f(B
+\author{$BF|K\8l(B\TeX{}$B3+H/%3%_%e%K%F%#!J(B\texttt{https://texjp.org/}$B!K(B}
+
+\def\cs#1{\texttt{\char92\nobreak #1}}
+\def\pTeX{p\kern-.15em\TeX}
+\def\eTeX{$\varepsilon$-\TeX}
+\def\epTeX{$\varepsilon$-\pTeX}
+\def\pLaTeX{p\kern-.05em\LaTeX}
+\def\pLaTeXe{p\kern-.05em\LaTeXe}
+\xspcode`\\=1
+
+\begin{document}
+
+\maketitle
+
+$B%3%_%e%K%F%#HG(B\pLaTeXe\ \texttt{<2020-10-01>}$B$K$D$$$F!"(B
+\pLaTeXe\ \texttt{<2020-04-12>}$B$+$i$N99?72U=j$r(B
+$B$^$H$a$^$7$?!#(Bu\pLaTeXe{}$B$bF1;~$K99?7$7$F$/$@$5$$!#(B
+
+
+\section{\LaTeXe\ \texttt{<2020-10-01>}$BBP1~(B}
+$B"*;29M!'(B|texjporg/platex#94|
+
+$B?7$7$$(B\LaTeXe\ \texttt{<2020-10-01>}$B$G$O!"(B
+$B%U%C%/$NJ}<0(B(A hook management system)$B$,0lHL2=$5$l$^$7$?(B
+$B!J(B\file{ltnews32}, \file{lthooks-doc}$B$b;2>H!K!#(B
+$B8E$/$+$i8DJL$KDj5A$5$l$F$$$?%U%C%/!J(B|\@begindocumenthook|$BEy!K$d(B
+\LaTeXe\ \texttt{<2020-02-02>}$B$GDI2C$5$l$?(BNFSS$B$N%U%C%/(B
+$B!J(B|\@defaultfamilyhook|, |\@sffamilyhook|$BEy!K$b:F9=@.$5$l$?$?$a!"(B
+$BBP1~$r;\$7$^$7$?!#(B
+
+$B$5$i$K!"%Z!<%8=PNO$K4X$o$k%3%^%s%I$b0l?7$5$l$^$7$?(B
+$B!J(B\file{ltnews32}, \file{ltshipout-doc}$B$b;2>H!K!#FC$K(B
+\begin{itemize}
+\item |\AtBeginDvi|$B$NDj5AJQ99(B
+\item |atbegshi|/|everyshi|$BAjEv$N5!G=$N%+!<%M%k2=(B
+\end{itemize}
+$B$,(B\pLaTeXe{}$B$K$b1F6A$7$^$9$N$G!"BP1~$r;\$7$^$7$?!#(B
+$B$3$l$K$h$j!"(B|pxatbegshi|/|pxeveryshi|$B%Q%C%1!<%8$KAjEv$9$k(B
+$B5!G=!J(B|plautopatch|$B%Q%C%1!<%8$b;2>H!K$,(B\pLaTeXe{}$B%+!<%M%k$K(B
+$B<h$j9~$^$l$?$3$H$K$J$j$^$9!#(B
+
+$BCm0U!'<BAu>e$NET9g$K$h$j!"=DAH%/%i%9$G$O(B
+$B!V(B|\AtBeginShipout|$B$NCf?H$,30It?bD>%b!<%I$G<B9T$5$l$k$3$H!W$r(B
+$BA[Dj$7$?;HMQ$O(B\emph{$B%5%]!<%H$5$l$^$;$s(B}$B!#(B
+$B!JNc!'(B|aminophen/platex-tools#15|$B!K(B
+
+
+\section{$B?7(BNFSS$B$NDI2C=$@5(B}
+$BA02s$N(B\LaTeXe\ \texttt{<2020-02-02>}$B$GBgI}$K3HD%$5$l$?(B
+NFSS$B!J%U%)%s%HA*Br$N;EAH$_!K$N?75!G=$K$D$$$F!"(B
+\LaTeXe\ \texttt{<2020-10-01>}$B$GDI2C=$@5$,F~$j$^$7$?$N$G(B
+$BDI?o$7$^$7$?!#!J;29M!'(B|latex3/latex2e#315|$B!K(B
+
+$B6qBNE*$K$O!V(B|\DeclareFontSeriesDefault|$B$N;XDj$,(B
+|\normalfont|$B$KH?1G$5$l$J$$LdBj!W$X$N=$@5$G$9!#(B
+$B:F8=Nc$O0J2<$r;2>H$7$F$/$@$5$$!#(B
+\begin{verbatim}
+  % roman-default = roman-medium
+  % $BL@D+$N%G%U%)%k%H!aL@D+$NCf;z(B
+  \documentclass{article}
+  % roman-medium-default -> roman-bold
+  % $BL@D+$NCf;z$N%G%U%)%k%H"*L@D+$NB@;z$X(B
+  %   $B"(L@D+$NB@;z$O%4%7%C%/$NCf;z$KCV49$5$l$k(B
+  \DeclareFontSeriesDefault[rm]{md}{b}
+  \DeclareFontSeriesDefault[mc]{md}{b}
+  \begin{document}
+  roman-default is bold
+  $BL@D+$N%G%U%)%k%H$OB@;z$K$J$C$?(B
+
+  \normalfont % 2020-02-02: $BB@;z$K$J$i$J$+$C$?(B
+  roman-default is bold?
+  $BL@D+$N%G%U%)%k%H$OB@;z$K$J$C$?$+!)(B
+
+  \mdseries
+  roman-medium is bold
+  $BL@D+$N%_%G%#%"%`$OB@;z$K$J$C$?(B
+  \end{document}
+\end{verbatim}
+
+
+\section{expl3$BJ8K!$N(B\pLaTeX{}$BHG(B}
+\LaTeXe\ \texttt{<2020-02-02>}$B$G(Bexpl3$B$,%U%)!<%^%C%H$K(B
+$BAH$_9~$^$l$?$3$H$r<u$1!"(B
+\pLaTeX{}$B$G$b(B\pTeX{}$B7ONs$NDI2C5!G=$r(Bexpl3$BJ8K!$KB'$C$F(B
+$BMxMQ$7$d$9$/$9$k$?$a!"K\%j%j!<%9$G?7@_$7$^$7$?!#(B
+\pLaTeXe\ \texttt{<2020-10-01>}$B$G$O!"$3$N5!G=$r(B
+$B%U%)!<%^%C%H$KAH$_9~$s$G$"$j$^$9!#(B
+
+$B8=;~E@$G$O!"AHJ}8~JQ99!J(B|\tate|$BEy!K$HAHJ}8~H=Dj!J(B|\iftdir|$BEy!K$r(B
+$B%i%C%W$9$k%3%^%s%I$rMQ0U$7$F$"$j$^$9!#>\:Y$O(B
+\file{pldoc.pdf}$B$N(B``plexpl3.dtx''$B$N@a$r;2>H$7$F$/$@$5$$!#(B
+
+
+\section{$B%P%0=$@5(B}
+\begin{itemize}
+ \item \LaTeXe~2017/01/01$B0J9_$G6u$N%U%m!<%H$@$1$N%Z!<%8$,(B
+  $BH/@8$7$?>l9g!"=DAH%/%i%9$G$O%U%C%?$N0LCV$,;}$A>e$,$C$F$$$?$N$G(B
+  $B=$@5$7$^$7$?!#(B(|#78|)
+ \item $B6XB'%Q%i%a!<%?@_Dj%U%!%$%k(B(kinsoku.tex)$B$K(B
+  |\inhibitxspcode`$B!*(B=1|$B$N@_Dj$,H4$1$F$$$?$N$GDI2C$7$^$7$?!#(B
+  (|ptex-base#8|)
+\end{itemize}
+
+
+\section{$B3+H/HG$N%F%9%H$N$*4j$$(B}
+$B:#8e(B\pLaTeX{}$B$KF3F~$9$k$+$b$7$l$J$$=$@5%Q%C%A$d;EMMJQ99$N%F%9%H$K(B
+$B$46(NO$/$@$5$$!#(B\TeX{}$B%U%!%$%k$NKAF,!J(B|\documentclass|$B$h$jA0!K$G(B
+\begin{verbatim}
+  \RequirePackage{exppl2e}
+\end{verbatim}
+$B$H=q$/$3$H$G!"8=:_$N3+H/HG$r%F%9%H$9$k$3$H$,$G$-$^$9!#(B
+$B>\:Y$O(B\file{exppl2e.pdf}$B$r;2>H$7$F$/$@$5$$!#$3$3$K$O!"(B
+$B$=$NB>$N(B\pLaTeXe{}$B$N4{CN$N@)Ls;v9`$b5-:\$7$F$$$^$9!#(B
+\TeX\ Forum$B$d(BGitHub$B$N(BIssue$B$G$N%P%0Js9p$d$40U8+$r4?7^$7$^$9!#(B
+\begin{itemize}
+\item \texttt{https://github.com/texjporg/platex}
+\item \texttt{https://github.com/texjporg/uplatex}
+\end{itemize}
+
+\end{document}
diff --git a/Master/texmf-dist/source/platex/base/plvers.dtx b/Master/texmf-dist/source/platex/base/plvers.dtx
index e85d8dca5d0..af39ab9dc09 100644
--- a/Master/texmf-dist/source/platex/base/plvers.dtx
+++ b/Master/texmf-dist/source/platex/base/plvers.dtx
@@ -96,12 +96,14 @@
 % \changes{v1.1s}{2020/03/14}{\LaTeX\ \texttt{!<2020-02-02!> PL5}$BHGBP1~3NG'(B}
 % \changes{v1.1t}{2020/03/25}{$B%P%J!<$N:F9=C[$r8zN(2=(B}
 % \changes{v1.1u}{2020/03/28}{latexrelease$BMxMQ;~$N7Y9p$rAa$a$?(B}
+% \changes{v1.1v}{2020/09/28}{$B?7$7$$%U%C%/$r3hMQ(B}
+% \changes{v1.1w}{2020/09/30}{\LaTeX\ \texttt{!<2020-10-01!>}$BHGBP1~3NG'(B}
 % \fi
 %
 % \iffalse
 %<*driver>
 % \fi
-\ProvidesFile{plvers.dtx}[2020/03/28 v1.1u pLaTeX Kernel (Version Info)]
+\ProvidesFile{plvers.dtx}[2020/09/30 v1.1w pLaTeX Kernel (Version Info)]
 % \iffalse
 \documentclass{jltxdoc}
 \GetFileInfo{plvers.dtx}
@@ -141,6 +143,7 @@
 % \changes{v1.1q}{2019/10/01}{\LaTeX\ \texttt{!<2019-10-01!>}$BHGBP1~3NG'(B}
 % \changes{v1.1r}{2020/02/01}{\LaTeX\ \texttt{!<2020-02-02!>}$BHGBP1~3NG'(B}
 % \changes{v1.1s}{2020/03/14}{\LaTeX\ \texttt{!<2020-02-02!> PL5}$BHGBP1~3NG'(B}
+% \changes{v1.1w}{2020/09/30}{\LaTeX\ \texttt{!<2020-10-01!>}$BHGBP1~3NG'(B}
 %    \begin{macrocode}
 %<*2ekernel>
 %\def\fmtname{LaTeX2e}
@@ -149,7 +152,7 @@
 %<latexrelease>\edef\latexreleaseversion
 %<platexrelease>\edef\p@known@latexreleaseversion
 %<*2ekernel|latexrelease|platexrelease>
-   {2020-02-02}
+   {2020-10-01}
 %</2ekernel|latexrelease|platexrelease>
 %    \end{macrocode}
 %
@@ -190,7 +193,7 @@
 %</plcore>
 %<platexrelease>\edef\platexreleaseversion
 %<*plcore|platexrelease>
-   {2020-04-12}
+   {2020-10-01}
 %</plcore|platexrelease>
 %<*plcore>
 \def\ppatch@level{0}
@@ -441,7 +444,7 @@
 % $B>e=q$-$5$l!"F0:n$,2u$l$F$7$^$$$^$9$N$G!"7Y9p$r=P$7$^$9!#(B
 % \changes{v1.0s}{2016/02/01}{latexrelease$BMxMQ;~$K7Y9p$r=P$9$h$&$K$7$?(B}
 %
-% $B0JA0$O(B|\AtBeginDocument|$B$r;H$C$F(B|\@begindocumenthook|$B$NKvHx$K(B
+% $BEv=i$O(B|\AtBeginDocument|$B$r;H$C$F(B|\@begindocumenthook|$B$NKvHx$K(B
 % $B7Y9pJ8$rF~$l$F$$$^$7$?$,!"(B\LaTeXe~2020-02-02$B0J9_$KIUB0$N(B
 % latexrelease$B%Q%C%1!<%8$G4,$-La$9$H%U%C%/$N<B9T$h$jAa$$CJ3,(B
 % $B!J6qBNE*$K$O(B|\process@table|$BFb$N(B|\kanjiprocess@table|$B<B9TCf!K$G(B
@@ -453,14 +456,25 @@
 % ^^A $B>e=q$-$5$l$F$$$k$O$:$G$"$j!"(B|\kanjiprocess@table|$B$O(B
 % ^^A $B<B9T$5$l$J$$$N$G%(%i!<$O=P$J$$!#(B
 % \changes{v1.1u}{2020/03/28}{latexrelease$BMxMQ;~$N7Y9p$rAa$a$?(B}
+%
+% \LaTeXe~2020-10-01$B0J9_$G$O(B|\process@table|$B$h$jAa$/<B9T$5$l$k(B
+% $B%U%C%/$,MQ0U$5$l$?$N$G!"$3$l$rMxMQ$7$^$9!#(B
+% \changes{v1.1v}{2020/09/28}{$B?7$7$$%U%C%/$r3hMQ(B}
 %    \begin{macrocode}
 %<*plfinal>
+\ifx\AddToHook\@undefined
+% for LaTeX2e 2020-02-02 PL5 or older
 \expandafter\def\expandafter\process@table\expandafter{%
   \expandafter\p@warn@latexrelease\process@table}
 \begingroup
 \toks@\expandafter{\expandafter\p@warn@latexrelease\@begindocumenthook}
 \xdef\@begindocumenthook{\the\toks@}
 \endgroup
+\else
+% for LaTeX2e 2020-10-01 or later
+\AddToHook{begindocument/before}{\p@warn@latexrelease}
+\fi
+%
 \def\p@warn@latexrelease{%
   \ifx\latexreleaseversion\@undefined\else
     \ifx\platexreleaseversion\@undefined