platex (6oct20)

git-svn-id: svn://tug.org/texlive/trunk@56582 c570f23f-e606-0410-a88d-b1316a301751

15 files changed, 240 insertions, 140 deletions

diff --git a/Master/texmf-dist/doc/platex/base/README.md b/Master/texmf-dist/doc/platex/base/README.md
index 939337e9f2c..404e056c3ad 100644
--- a/Master/texmf-dist/doc/platex/base/README.md
+++ b/Master/texmf-dist/doc/platex/base/README.md
@@ -64,6 +64,6 @@ the 3-clause BSD license (see [LICENSE](./LICENSE)).
 
 ## Release Date
 
-2020-09-30
+2020-10-07
 
 Japanese TeX Development Community
diff --git a/Master/texmf-dist/doc/platex/base/platex-en.pdf b/Master/texmf-dist/doc/platex/base/platex-en.pdf
index cabe7485d56..722c360f9b2 100644
--- a/Master/texmf-dist/doc/platex/base/platex-en.pdf
+++ b/Master/texmf-dist/doc/platex/base/platex-en.pdf
diff --git a/Master/texmf-dist/doc/platex/base/platex.pdf b/Master/texmf-dist/doc/platex/base/platex.pdf
index 53797d39cc9..8d6e3fd37a2 100644
--- a/Master/texmf-dist/doc/platex/base/platex.pdf
+++ b/Master/texmf-dist/doc/platex/base/platex.pdf
diff --git a/Master/texmf-dist/doc/platex/base/platexrelease.pdf b/Master/texmf-dist/doc/platex/base/platexrelease.pdf
index d15e1e6ac0d..6addbab84cf 100644
--- a/Master/texmf-dist/doc/platex/base/platexrelease.pdf
+++ b/Master/texmf-dist/doc/platex/base/platexrelease.pdf
diff --git a/Master/texmf-dist/doc/platex/base/pldoc.pdf b/Master/texmf-dist/doc/platex/base/pldoc.pdf
index db9bc1fc324..83368ed5e7c 100644
--- a/Master/texmf-dist/doc/platex/base/pldoc.pdf
+++ b/Master/texmf-dist/doc/platex/base/pldoc.pdf
diff --git a/Master/texmf-dist/source/platex/base/Makefile b/Master/texmf-dist/source/platex/base/Makefile
index e89d976fca2..df52b9b90a9 100644
--- a/Master/texmf-dist/source/platex/base/Makefile
+++ b/Master/texmf-dist/source/platex/base/Makefile
@@ -4,10 +4,14 @@ DOCTARGET = platex platexrelease pldoc exppl2e \
 	platex-en #pldoc-en
 PDFTARGET = $(addsuffix .pdf,$(DOCTARGET))
 DVITARGET = $(addsuffix .dvi,$(DOCTARGET))
+TEXMF = $(shell kpsewhich -var-value=TEXMFHOME)
+
 KANJI = -kanji=jis
 #FONTMAP = -f ipaex.map -f ptex-ipaex.map
 FONTMAP = -f haranoaji.map -f ptex-haranoaji.map
-TEXMF = $(shell kpsewhich -var-value=TEXMFHOME)
+LTX = platex $(KANJI)
+DPX = dvipdfmx $(FONTMAP)
+MDX = mendex -J
 
 default: $(STRIPTARGET) $(DVITARGET)
 strip: $(STRIPTARGET)
@@ -44,66 +48,79 @@ PLDOC_SRC = $(PLFMT_SRC) $(PLCLS_SRC) $(PL209_SRC) jltxdoc.dtx
 
 platex.ltx: $(PLFMT_SRC)
 	rm -f $(PLFMT)
-	platex $(KANJI) plfmt.ins
+	$(LTX) plfmt.ins
 	rm plfmt.log
 
 jarticle.cls: $(PLCLS_SRC)
 	rm -f $(PLCLS)
-	platex $(KANJI) plcls.ins
+	$(LTX) plcls.ins
 	rm plcls.log
 
 pl209.def: $(PL209_SRC)
 	rm -f $(PL209)
-	platex $(KANJI) pl209.ins
+	$(LTX) pl209.ins
 	rm pl209.log
 
 platexrelease.sty: $(PLREL_SRC)
 	rm -f $(PLREL)
-	platex $(KANJI) platexrelease.ins
+	$(LTX) platexrelease.ins
 	rm platexrelease.log
 
 jltxdoc.cls: jltxdoc.dtx
 	rm -f jltxdoc.cls pldoc.tex Xins.ins
-	platex $(KANJI) pldocs.ins
+	$(LTX) pldocs.ins
 	rm pldocs.log pldoc.tex Xins.ins
 
 platex.dvi: $(INTRODOC_SRC)
 	rm -f platex.cfg
-	platex $(KANJI) platex.dtx
-	mendex -J -f -s gglo.ist -o platex.gls platex.glo
-	platex $(KANJI) platex.dtx
+	$(LTX) platex.dtx
+	$(MDX) -f -s gglo.ist -o platex.gls platex.glo
+	$(LTX) platex.dtx
 	rm platex.aux platex.log
 	rm platex.glo platex.gls platex.ilg
 
 platexrelease.dvi: $(PLRELDOC_SRC)
 	rm -f platex.cfg
-	platex $(KANJI) platexrelease.dtx
-	platex $(KANJI) platexrelease.dtx
+	$(LTX) platexrelease.dtx
+	$(LTX) platexrelease.dtx
 	rm platexrelease.aux platexrelease.log
 
 pldoc.dvi: $(PLDOC_SRC)
 	rm -f platex.cfg
 	rm -f jltxdoc.cls pldoc.tex Xins.ins
-	platex $(KANJI) pldocs.ins
-	rm -f mkpldoc*.sh dstcheck.pl
-	platex $(KANJI) Xins.ins
-	sh mkpldoc.sh
+	$(LTX) pldocs.ins
+	#
+	#rm -f mkpldoc*.sh dstcheck.pl
+	#$(LTX) Xins.ins
+	#sh mkpldoc.sh
+	#rm mkpldoc*.sh dstcheck.pl
+	#
+	rm -f pldoc.toc pldoc.idx pldoc.glo
+	echo "" > ltxdoc.cfg
+	$(LTX) pldoc.tex
+	$(MDX) -s gind.ist -d pldoc.dic -o pldoc.ind pldoc.idx
+	$(MDX) -f -s gglo.ist -o pldoc.gls pldoc.glo
+	echo "\includeonly{}" > ltxdoc.cfg
+	$(LTX) pldoc.tex
+	echo "" > ltxdoc.cfg
+	$(LTX) pldoc.tex
+	#
 	rm *.aux *.log pldoc.toc pldoc.idx pldoc.ind pldoc.ilg
 	rm pldoc.glo pldoc.gls pldoc.tex Xins.ins
-	rm ltxdoc.cfg pldoc.dic mkpldoc*.sh dstcheck.pl
+	rm ltxdoc.cfg pldoc.dic
 
 exppl2e.dvi: exppl2e.sty
 	rm -f platex.cfg
-	platex $(KANJI) exppl2e.sty
-	platex $(KANJI) exppl2e.sty
+	$(LTX) exppl2e.sty
+	$(LTX) exppl2e.sty
 	rm exppl2e.aux exppl2e.log
 
 platex-en.dvi: $(INTRODOC_SRC)
 	# built-in echo in shell is troublesome, so use perl instead
 	perl -e "print \"\\\\newif\\\\ifJAPANESE\\n"\" >platex.cfg
-	platex -jobname=platex-en $(KANJI) platex.dtx
-	mendex -J -f -s gglo.ist -o platex-en.gls platex-en.glo
-	platex -jobname=platex-en $(KANJI) platex.dtx
+	$(LTX) -jobname=platex-en platex.dtx
+	$(MDX) -f -s gglo.ist -o platex-en.gls platex-en.glo
+	$(LTX) -jobname=platex-en platex.dtx
 	rm platex-en.aux platex-en.log
 	rm platex-en.glo platex-en.gls platex-en.ilg
 	rm platex.cfg
@@ -112,27 +129,40 @@ pldoc-en.dvi: $(PLDOC_SRC)
 	# built-in echo in shell is troublesome, so use perl instead
 	perl -e "print \"\\\\newif\\\\ifJAPANESE\\n"\" >platex.cfg
 	rm -f jltxdoc.cls pldoc.tex Xins.ins
-	platex $(KANJI) pldocs.ins
-	rm -f mkpldoc*.sh dstcheck.pl
-	platex $(KANJI) Xins.ins
-	sh mkpldoc-en.sh
+	$(LTX) pldocs.ins
+	#
+	#rm -f mkpldoc*.sh dstcheck.pl
+	#$(LTX) Xins.ins
+	#sh mkpldoc-en.sh
+	#rm mkpldoc*.sh dstcheck.pl
+	#
+	rm -f pldoc-en.toc pldoc-en.idx pldoc-en.glo
+	echo "" > ltxdoc.cfg
+	$(LTX) -jobname=pldoc-en pldoc.tex
+	$(MDX) -s gind.ist -d pldoc.dic -o pldoc-en.ind pldoc-en.idx
+	$(MDX) -f -s gglo.ist -o pldoc-en.gls pldoc-en.glo
+	echo "\includeonly{}" > ltxdoc.cfg
+	$(LTX) -jobname=pldoc-en pldoc.tex
+	echo "" > ltxdoc.cfg
+	$(LTX) -jobname=pldoc-en pldoc.tex
+	#
 	rm *.aux *.log pldoc-en.toc pldoc-en.idx pldoc-en.ind pldoc-en.ilg
 	rm pldoc-en.glo pldoc-en.gls pldoc.tex Xins.ins
-	rm ltxdoc.cfg pldoc.dic mkpldoc*.sh dstcheck.pl
+	rm ltxdoc.cfg pldoc.dic
 	rm platex.cfg
 
 platex.pdf: platex.dvi
-	dvipdfmx $(FONTMAP) $<
+	$(DPX) $<
 platexrelease.pdf: platexrelease.dvi
-	dvipdfmx $(FONTMAP) $<
+	$(DPX) $<
 pldoc.pdf: pldoc.dvi
-	dvipdfmx $(FONTMAP) $<
+	$(DPX) $<
 exppl2e.pdf: exppl2e.dvi
-	dvipdfmx $(FONTMAP) $<
+	$(DPX) $<
 platex-en.pdf: platex-en.dvi
-	dvipdfmx $(FONTMAP) $<
+	$(DPX) $<
 pldoc-en.pdf: pldoc-en.dvi
-	dvipdfmx $(FONTMAP) $<
+	$(DPX) $<
 
 .PHONY: install clean cleanstrip cleanall cleandoc
 install:
diff --git a/Master/texmf-dist/source/platex/base/platex.dtx b/Master/texmf-dist/source/platex/base/platex.dtx
index b1dd3b368a0..77e5e036d41 100644
--- a/Master/texmf-dist/source/platex/base/platex.dtx
+++ b/Master/texmf-dist/source/platex/base/platex.dtx
@@ -1766,13 +1766,13 @@ exit;
 %
 % \bibitem{ajt2008okumura}
 % Haruhiko Okumura,
-% \newblock \pTeX\ and Japanese Typesetting
+% \newblock ``{\em \pTeX\ and Japanese Typesetting}''.
 % \newblock The Asian Journal of \TeX, Volume~2, No.~1, 2008.\\
 % (\texttt{http://ajt.ktug.org/2008/0201okumura.pdf})
 %
 % \bibitem{tb29hamano}
 % Hisato Hamano,
-% \newblock Vertical Typesetting with \TeX.
+% \newblock ``{\em Vertical Typesetting with \TeX}''.
 % \newblock TUGboat issue 11:3, 1990.\\
 % (\texttt{https://tug.org/TUGboat/tb11-3/tb29hamano.pdf})
 %
diff --git a/Master/texmf-dist/source/platex/base/platexrelease.dtx b/Master/texmf-dist/source/platex/base/platexrelease.dtx
index c31d8c0d20b..e76a387e2e8 100644
--- a/Master/texmf-dist/source/platex/base/platexrelease.dtx
+++ b/Master/texmf-dist/source/platex/base/platexrelease.dtx
@@ -339,6 +339,8 @@ of this package available from CTAN}
       some critical bugs. We advise you to\MessageBreak
       select another format date}
 \plIncludeInRelease{2017/10/28}{\PackageWarning}{pLaTeX Info}%
+  % * <2020-10-01>+1
+  % * <2020-10-01>
   % * <2020-04-12>
   % * <2020-02-02>+3
   % * <2020-02-02>+2
diff --git a/Master/texmf-dist/source/platex/base/platexrelease.ins b/Master/texmf-dist/source/platex/base/platexrelease.ins
index 7b4d7df208f..b1ed64c87ee 100644
--- a/Master/texmf-dist/source/platex/base/platexrelease.ins
+++ b/Master/texmf-dist/source/platex/base/platexrelease.ins
@@ -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{plvers.dtx}{plhookrelease}%% specific!
           \from{plexpl3.dtx}{platexrelease}
           \from{plfonts.dtx}{platexrelease}
           \from{plcore.dtx}{platexrelease}}
diff --git a/Master/texmf-dist/source/platex/base/plext.dtx b/Master/texmf-dist/source/platex/base/plext.dtx
index 438cf7c0433..023a3db05eb 100644
--- a/Master/texmf-dist/source/platex/base/plext.dtx
+++ b/Master/texmf-dist/source/platex/base/plext.dtx
@@ -3,7 +3,7 @@
 %
 %  Copyright 2001 ASCII Corporation.
 %  Copyright (c) 2010 ASCII MEDIA WORKS
-%  Copyright (c) 2016-2019 Japanese TeX Development Community
+%  Copyright (c) 2016-2020 Japanese TeX Development Community
 %
 %  This file is part of the pLaTeX2e system (community edition).
 %  -------------------------------------------------------------
@@ -83,6 +83,9 @@
 %    $BD>8r$9$k>l9g$K!"?<$5$rK:$l$F$$$?%P%0=$@5(B (forum:2506, issue~76)}
 % \changes{v1.2l}{2019/09/29}{Make \cs{bou} robust}
 % \changes{v1.2l}{2019/09/29}{Make \cs{kasen} robust}
+% \changes{v1.2m}{2020/10/07}{$B%^%/%mDI2C(B}
+% \changes{v1.2m}{2020/10/07}{Use \cs{@defaultunitsset} (gh/372)
+%    (sync with ltpictur.dtx 2020/08/14 v1.2a)}
 % \fi
 %
 % \iffalse
@@ -91,7 +94,7 @@
 \ProvidesFile{plext.dtx}
 %</driver>
 %<package>\ProvidesPackage{plext}
-   [2019/09/29 v1.2l pLaTeX package file (community edition)]
+   [2020/10/07 v1.2m pLaTeX package file (community edition)]
 %<*driver>
 \documentclass{jltxdoc}
 \usepackage{plext}
@@ -754,12 +757,12 @@
 %    \end{macrocode}
 % $B:G8e$K(B|\@captionbox|$B$rAH$_N)$F$^$9!#(B
 %
-% $B0LCV#2%*%W%7%g%s$,(B`|u|'$B$+(B`|d|'$B$N>l9g!"(B
+% $B0LCV(B2$B%*%W%7%g%s$,(B`|u|'$B$+(B`|d|'$B$N>l9g!"(B
 % $B$3$N%\%C%/%9$NI}$r%U%m!<%H%*%V%8%'%/%H$NI}$HF1$8D9$5$K$7!"(B
-% $B0LCV#1%*%W%7%g%s$G$NB7$($KAH$_N)$F$^$9!#(B
+% $B0LCV(B1$B%*%W%7%g%s$G$NB7$($KAH$_N)$F$^$9!#(B
 %
-% $B0LCV#2%*%W%7%g%s$,(B`|l|'$B$+(B`|r|'$B$N>l9g$O!"%-%c%W%7%g%s$NI}$G$9!#(B
-% $B$3$N$H$-$N0LCV#1%*%W%7%g%s$NB7$($O!"$3$NA0$NCJ3,$G=`Hw$r$7$F$*$-!"(B
+% $B0LCV(B2$B%*%W%7%g%s$,(B`|l|'$B$+(B`|r|'$B$N>l9g$O!"%-%c%W%7%g%s$NI}$G$9!#(B
+% $B$3$N$H$-$N0LCV(B1$B%*%W%7%g%s$NB7$($O!"$3$NA0$NCJ3,$G=`Hw$r$7$F$*$-!"(B
 % |\@pcaption|$B$G:G=*E*$K%U%m!<%H%*%V%8%'%/%H$HAH$_9g$o$;$k$H$-$K$J$5$l$^$9!#(B
 %    \begin{macrocode}
   \let\to@captionboxwidth\relax
@@ -1176,32 +1179,52 @@
 \newdimen\save@tbaselineshift
 \newdimen\@picwd
 %    \end{macrocode}
-% |\picture|$B$NFbIt7A<0$G$9!##3AHL\$N0z?t$O!"86E@:BI8$G$9!#(B
+% \end{macro}
+%
+% \begin{macro}{\X@picture@dimens}
+% $B?^7ANN0h$N@#K!CM$rD4@0$9$kL?Na$r@Z$j=P$7$^$7$?!#(B
+% $B4pK\AH$NAH$_J}8~$HD>8r$9$k>l9g$O!"9b$5$HI}$rF~$lBX$($^$9!#(B
+% \changes{v1.2m}{2020/10/07}{$B%^%/%mDI2C(B}
+%    \begin{macrocode}
+\ifx\@defaultunitsset\@undefined     % old
+  \def\X@picture@dimens#1#2#3#4{%
+    \@picwd=#1\unitlength \@picht=#2\unitlength
+    \@tempdima=#3\unitlength \@tempdimb=#4\unitlength
+  }
+\else                                % 2020-10-01
+  \def\X@picture@dimens#1#2#3#4{%
+    \@defaultunitsset\@picwd{#1}\unitlength
+    \@defaultunitsset\@picht{#2}\unitlength
+    \@defaultunitsset\@tempdima{#3}\unitlength
+    \@defaultunitsset\@tempdimb{#4}\unitlength
+  }
+\fi
+%    \end{macrocode}
+% |\picture|$B$NFbIt7A<0$G$9!#(B3$BAHL\$N0z?t$O!"86E@:BI8$G$9!#(B
+% \changes{v1.2m}{2020/10/07}{Use \cs{@defaultunitsset} (gh/372)
+%    (sync with ltpictur.dtx 2020/08/14 v1.2a)}
 %    \begin{macrocode}
 \def\@@picture<#1>(#2,#3)(#4,#5){%
   \save@ybaselineshift\ybaselineshift
   \save@tbaselineshift\tbaselineshift
   \iftdir
     \if#1y\let\box@dir\yoko
-      \@picwd=#3\unitlength \@picht=#2\unitlength
-      \@tempdima=#5\unitlength \@tempdimb=#4\unitlength
+      \X@picture@dimens{#3}{#2}{#5}{#4}%
     \else\let\box@dir\tate
-      \@picwd=#2\unitlength \@picht=#3\unitlength
-      \@tempdima=#4\unitlength \@tempdimb=#5\unitlength
+      \X@picture@dimens{#2}{#3}{#4}{#5}%
     \fi
   \else
     \if#1t\let\box@dir\tate
-      \@picwd=#3\unitlength \@picht=#2\unitlength
-      \@tempdima=#5\unitlength \@tempdimb=#4\unitlength
+      \X@picture@dimens{#3}{#2}{#5}{#4}%
     \else\let\box@dir\yoko
-      \@picwd=#2\unitlength \@picht=#3\unitlength
-      \@tempdima=#4\unitlength \@tempdimb=#5\unitlength
+      \X@picture@dimens{#2}{#3}{#4}{#5}%
     \fi
   \fi
-  \setbox\@picbox\hbox to\@picwd\bgroup\box@dir
-  \hskip-\@tempdima\lower\@tempdimb\hbox\bgroup
-  \ybaselineshift\z@ \tbaselineshift\z@
-  \ignorespaces}
+  \setbox\@picbox\hb@xt@\@picwd\bgroup\box@dir
+    \hskip-\@tempdima
+    \lower\@tempdimb\hbox\bgroup
+      \ybaselineshift\z@ \tbaselineshift\z@
+      \ignorespaces}
 %    \end{macrocode}
 % \end{macro}
 %
@@ -1263,7 +1286,7 @@
 % $B!XF|K\8l(B\LaTeXe{}$B%V%C%/!Y$r;2>H$7$F$/$@$5$$!#(B
 % $B$J$*!"K5E@$K;H$&J8;z$O(B\file{pldefs.ltx}$B$GDj5A$5$l$F$$$^$9!#(B
 %
-% $B$J$*!"O"?t;z%3%^%s%I$O#3<oN`$"$j$^$7$?$,!"(B
+% $B$J$*!"O"?t;z%3%^%s%I$O(B3$B<oN`$"$j$^$7$?$,!"(B
 % |\rensuji|$B%3%^%s%I0l$D$K$^$H$a$^$7$?!#(B
 % $B?7$7$$O"?t;z%3%^%s%I$O<!$N9=J8$H$J$j$^$9!#(B
 %
@@ -1285,7 +1308,7 @@
 %    \end{macrocode}
 %
 % |\rensujiskip|$B$OO"?t;z$NA08e$KF~$k%"%-$G$9!#(B
-% $B%G%U%)%k%H$O!"8=:_$NJ8;z$NI}$N#4J,$N#1$r4p=`$K$7$F$$$^$9!#(B
+% $B%G%U%)%k%H$O!"8=:_$NJ8;z$NI}$N(B4$BJ,$N(B1$B$r4p=`$K$7$F$$$^$9!#(B
 %    \begin{macrocode}
 \newskip\rensujiskip
 \rensujiskip=0.25\chs plus.25zw minus.25zw
diff --git a/Master/texmf-dist/source/platex/base/plfonts.dtx b/Master/texmf-dist/source/platex/base/plfonts.dtx
index e68de15a597..2ccf9c3790b 100644
--- a/Master/texmf-dist/source/platex/base/plfonts.dtx
+++ b/Master/texmf-dist/source/platex/base/plfonts.dtx
@@ -166,13 +166,14 @@
 %    (sync with ltfssini.dtx 2020/04/13 v3.1n)}
 % \changes{v1.7h}{2020/09/28}{New hook management interface
 %    (sync with ltfssini.dtx 2020/08/21 v3.2b)}
+% \changes{v1.7i}{2020/10/07}{$B%U%C%/%7%9%F%`$NM-L5H=Dj$r2~NI(B}
 % \fi
 %
 % \iffalse
 %<*driver>
 \NeedsTeXFormat{pLaTeX2e}
 % \fi
-\ProvidesFile{plfonts.dtx}[2020/09/28 v1.7h pLaTeX New Font Selection Scheme]
+\ProvidesFile{plfonts.dtx}[2020/10/07 v1.7i pLaTeX New Font Selection Scheme]
 % \iffalse
 \documentclass{jltxdoc}
 \GetFileInfo{plfonts.dtx}
@@ -2976,11 +2977,12 @@
 % \LaTeXe~2020-10-01$B$G$O(B|\AddToHook|$B$,;H$($^$9!#(B
 % \changes{v1.7h}{2020/09/28}{New hook management interface
 %    (sync with ltfssini.dtx 2020/08/21 v3.2b)}
+% \changes{v1.7i}{2020/10/07}{$B%U%C%/%7%9%F%`$NM-L5H=Dj$r2~NI(B}
 %    \begin{macrocode}
 %<platexrelease>\plIncludeInRelease{2020/04/12}{\normalfont}
 %<platexrelease>                   {Use \@defaultfamilyhook}%
 %<*plcore|platexrelease>
-\ifx\AddToHook\@undefined % --- for 2020-02-02 or older BEGIN
+\ifnum\pltx@newhook@avail=\z@ % --- for <= 2020-02-02 BEGIN
 \ifx\@defaultfamilyhook\@undefined  % old
 \DeclareRobustCommand\normalfont{%
     \kanjiencoding{\kanjiencodingdefault}%
@@ -3007,14 +3009,14 @@
     \edef\k@shape{\kanjishapedefault}%
 }
 \fi                                 % done
-\else % --- for 2020-02-02 or older END & for 2020-10-01 BEGIN
+\else % --- for <= 2020-02-02 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>   \@defaultfamilyhook % hookname from 2020/02 will vanish
 %<platexrelease>   \selectfont}
 \AddToHook{normalfont}{%
     \kanjiencoding{\kanjiencodingdefault}%
@@ -3022,7 +3024,7 @@
     \edef\k@series{\kanjiseriesdefault}%
     \edef\k@shape{\kanjishapedefault}%
 }
-\fi % --- for 2020-10-01 END
+\fi   % --- for >= 2020-10-01 END
 \adjustbaseline
 \let\reset@font\normalfont
 %</plcore|platexrelease>
@@ -3124,22 +3126,23 @@
 % ^^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)}
+% \changes{v1.7i}{2020/10/07}{$B%U%C%/%7%9%F%`$NM-L5H=Dj$r2~NI(B}
 %    \begin{macrocode}
-\ifx\expand@font@defaults\@undefined\else %<*2020-02-02|2020-10-01>
-\ifx\AddToHook\@undefined % --- for 2020-02-02 BEGIN
+\ifx\expand@font@defaults\@undefined\else %<*2020-02-02|2020-10-01|.>
+\ifnum\pltx@newhook@avail=\z@ % --- for == 2020-02-02 BEGIN
 \g@addto@macro\expand@font@defaults{%
   \edef\mcdef@ult{\mcdefault}%
   \edef\gtdef@ult{\gtdefault}%
   \edef\kanjidef@ult{\kanjifamilydefault}%
 }
-\else % --- for 2020-02-02 END & for 2020-10-01 BEGIN
+\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>
+\fi   % --- for >= 2020-10-01 END
+\fi %</2020-02-02|2020-10-01|.>
 %    \end{macrocode}
 % \end{macro}
 %
@@ -3201,8 +3204,8 @@
 %    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\else %<*2020-02-02|2020-10-01>
-\ifx\AddToHook\@undefined % --- for 2020-02-02 BEGIN
+\ifx\bfseries@rm\@undefined\else %<*2020-02-02|2020-10-01|.>
+\ifnum\pltx@newhook@avail=\z@ % --- for == 2020-02-02 BEGIN
 \DeclareRobustCommand\bfseries{%
   \not@math@alphabet\bfseries\mathbf
   \expand@font@defaults
@@ -3251,8 +3254,9 @@
 % $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)}
+% \changes{v1.7i}{2020/10/07}{$B%U%C%/%7%9%F%`$NM-L5H=Dj$r2~NI(B}
 %    \begin{macrocode}
-\else % --- for 2020-02-02 END & for 2020-10-01 BEGIN
+\else % --- for == 2020-02-02 END & for >= 2020-10-01 BEGIN
 \AddToHook{bfseries/defaults}{%
     \let\bfseries@mc\bfdef@ult
     \let\bfseries@gt\bfdef@ult
@@ -3275,8 +3279,8 @@
     \else                        \kanjiseries\mddefault
     \fi\fi
 }
-\fi % --- for 2020-10-01 END
-\fi %</2020-02-02|2020-10-01>
+\fi   % --- for >= 2020-10-01 END
+\fi %</2020-02-02|2020-10-01|.>
 %    \end{macrocode}
 % \end{macro}
 % \end{macro}
@@ -3441,16 +3445,17 @@
 % \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)}
+% \changes{v1.7i}{2020/10/07}{$B%U%C%/%7%9%F%`$NM-L5H=Dj$r2~NI(B}
 %    \begin{macrocode}
 \expandafter\ifx\csname init@series@setup\endcsname\relax
-\else   %<*2020-02-02|2020-10-01>
-\ifx\AddToHook\@undefined % --- for 2020-02-02 BEGIN
+\else   %<*2020-02-02|2020-10-01|.>
+\ifnum\pltx@newhook@avail=\z@ % --- 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
 }%
-\else % --- for 2020-02-02 END & for 2020-10-01 BEGIN
+\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
@@ -3459,8 +3464,8 @@
   \fi
   % !! sync with 2020/04/13 v3.1n END
 }%
-\fi % --- for 2020-10-01 END
-\fi     %</2020-02-02|2020-10-01>
+\fi   % --- for >= 2020-10-01 END
+\fi     %</2020-02-02|2020-10-01|.>
 %    \end{macrocode}
 % \end{macro}
 %
@@ -3473,14 +3478,14 @@
 % $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)}
+% \changes{v1.7i}{2020/10/07}{$B%U%C%/%7%9%F%`$NM-L5H=Dj$r2~NI(B}
 %    \begin{macrocode}
-\ifx\AddToHook\@undefined
-\else % --- for LaTeX2e 2020-10-01 or later BEGIN
+\ifnum\pltx@newhook@avail>\z@ % --- for >= 2020-10-01 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
+\fi                           % --- for >= 2020-10-01 END
 %    \end{macrocode}
 % \end{macro}
 % \end{macro}
diff --git a/Master/texmf-dist/source/platex/base/plvers.dtx b/Master/texmf-dist/source/platex/base/plvers.dtx
index af39ab9dc09..9ee65a40041 100644
--- a/Master/texmf-dist/source/platex/base/plvers.dtx
+++ b/Master/texmf-dist/source/platex/base/plvers.dtx
@@ -98,12 +98,13 @@
 % \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}
+% \changes{v1.1x}{2020/10/07}{$B%U%C%/%7%9%F%`$,MxMQ2DG=$+$I$&$+H=Dj(B}
 % \fi
 %
 % \iffalse
 %<*driver>
 % \fi
-\ProvidesFile{plvers.dtx}[2020/09/30 v1.1w pLaTeX Kernel (Version Info)]
+\ProvidesFile{plvers.dtx}[2020/10/07 v1.1x pLaTeX Kernel (Version Info)]
 % \iffalse
 \documentclass{jltxdoc}
 \GetFileInfo{plvers.dtx}
@@ -196,7 +197,7 @@
    {2020-10-01}
 %</plcore|platexrelease>
 %<*plcore>
-\def\ppatch@level{0}
+\def\ppatch@level{1}
 %</plcore>
 %    \end{macrocode}
 % \end{macro}
@@ -347,6 +348,28 @@
 % \changes{v1.1n}{2018/10/31}{\LaTeXe{}$B$H(Bp\LaTeXe{}$B$N99?7%?%$%_%s%0$:$lBP:v$r(B
 %    \file{plvers.dtx} (plfinal) $B$+$i(B\file{plcore.dtx}$B$X0\F0(B}
 %
+% \subsection{$B%U%C%/%7%9%F%`$,MxMQ2DG=$+$I$&$+(B}
+% \begin{macro}{\pltx@newhook@avail}
+% $B%U%)!<%^%C%H:n@.;~!J(B\file{latex.ltx}$B$NFI9~8e$9$0!K$H!"(B
+% platexrelease$B%Q%C%1!<%8Fb!J(Blatexrelease$B%Q%C%1!<%8FI9~8e$9$0!K$G(B
+% $B$=$l$>$lH=Dj$9$kI,MW$,$"$j$^$9!#(B
+% ^^A $BK\Ev$O!V(B|\AddToHook| $B$,Dj5A:Q$_$+$I$&$+!W$r;H$$$?$$$,(B
+% ^^A \begin{itemize}
+% ^^A   \item Format date 2020-02-02 or older: undefined
+% ^^A   \item Format date 2020-10-01 or newer: available
+% ^^A   \item ... under \texttt{latexrelease} rollback: defined but no-op
+% ^^A \end{itemize}
+% ^^A $B$H$$$&FC<l$J(Brollback$B$KBP=h$9$k$?$a!"(B|\fmtversion|$B$GH=Dj$9$k!#(B
+% ^^A $BC1$J$k(Bif-$B%H!<%/%s$O!VFI$_Ht$P$7!W$N9MN8$,LLE]$J$N$G;H$o$J$$!#(B
+% \changes{v1.1x}{2020/10/07}{$B%U%C%/%7%9%F%`$,MxMQ2DG=$+$I$&$+H=Dj(B}
+%    \begin{macrocode}
+%<*plcore|plhookrelease>
+\chardef\pltx@newhook@avail=\z@
+\@ifl@t@r\fmtversion{2020/10/01}{\chardef\pltx@newhook@avail=\@ne}{}
+%</plcore|plhookrelease>
+%    \end{macrocode}
+% \end{macro}
+%
 %
 % \section{latexrelease$B%Q%C%1!<%8$X$NBP1~(B}
 %
@@ -462,7 +485,7 @@
 % \changes{v1.1v}{2020/09/28}{$B?7$7$$%U%C%/$r3hMQ(B}
 %    \begin{macrocode}
 %<*plfinal>
-\ifx\AddToHook\@undefined
+\ifnum\pltx@newhook@avail=\z@
 % for LaTeX2e 2020-02-02 PL5 or older
 \expandafter\def\expandafter\process@table\expandafter{%
   \expandafter\p@warn@latexrelease\process@table}
diff --git a/Master/texmf-dist/tex/platex/base/platexrelease.sty b/Master/texmf-dist/tex/platex/base/platexrelease.sty
index 95f5ee2d122..b54874f3f00 100644
--- a/Master/texmf-dist/tex/platex/base/platexrelease.sty
+++ b/Master/texmf-dist/tex/platex/base/platexrelease.sty
@@ -6,6 +6,7 @@
 %%
 %% plvers.dtx  (with options: `platexrelease')
 %% platexrelease.dtx  (with options: `platexrelease')
+%% plvers.dtx  (with options: `plhookrelease')
 %% plexpl3.dtx  (with options: `platexrelease')
 %% plfonts.dtx  (with options: `platexrelease')
 %% plcore.dtx  (with options: `platexrelease')
@@ -143,6 +144,8 @@ of this package available from CTAN}
       some critical bugs. We advise you to\MessageBreak
       select another format date}
 \plIncludeInRelease{2017/10/28}{\PackageWarning}{pLaTeX Info}%
+  % * <2020-10-01>+1
+  % * <2020-10-01>
   % * <2020-04-12>
   % * <2020-02-02>+3
   % * <2020-02-02>+2
@@ -203,6 +206,9 @@ of this package available from CTAN}
 \plIncludeInRelease{0000/00/00}{\PackageWarning}{pLaTeX Info}%
   % * <2006/11/10>
 \plEndIncludeInRelease
+%% File: plvers.dtx
+\chardef\pltx@newhook@avail=\z@
+\@ifl@t@r\fmtversion{2020/10/01}{\chardef\pltx@newhook@avail=\@ne}{}
 %% File: plexpl3.dtx
 \plIncludeInRelease{2020/10/01}%
                    {plexpl3}{Pre-load plexpl3}%
@@ -1234,7 +1240,7 @@ of this package available from CTAN}
 \plEndIncludeInRelease
 \plIncludeInRelease{2020/04/12}{\normalfont}
                    {Use \@defaultfamilyhook}%
-\ifx\AddToHook\@undefined % --- for 2020-02-02 or older BEGIN
+\ifnum\pltx@newhook@avail=\z@ % --- for <= 2020-02-02 BEGIN
 \ifx\@defaultfamilyhook\@undefined  % old
 \DeclareRobustCommand\normalfont{%
     \kanjiencoding{\kanjiencodingdefault}%
@@ -1261,14 +1267,14 @@ of this package available from CTAN}
     \edef\k@shape{\kanjishapedefault}%
 }
 \fi                                 % done
-\else % --- for 2020-02-02 or older END & for 2020-10-01 BEGIN
+\else % --- for <= 2020-02-02 END & for >= 2020-10-01 BEGIN
 \DeclareRobustCommand\normalfont{%
    \fontencoding\encodingdefault
    \edef\f@family{\familydefault}%
    \edef\f@series{\seriesdefault}%
    \edef\f@shape{\shapedefault}%
    \UseHook{normalfont}%
-   \@defaultfamilyhook        % hookname from 2020/02 will vanish
+   \@defaultfamilyhook % hookname from 2020/02 will vanish
    \selectfont}
 \AddToHook{normalfont}{%
     \kanjiencoding{\kanjiencodingdefault}%
@@ -1276,7 +1282,7 @@ of this package available from CTAN}
     \edef\k@series{\kanjiseriesdefault}%
     \edef\k@shape{\kanjishapedefault}%
 }
-\fi % --- for 2020-10-01 END
+\fi   % --- for >= 2020-10-01 END
 \adjustbaseline
 \let\reset@font\normalfont
 \plEndIncludeInRelease
@@ -1321,23 +1327,23 @@ of this package available from CTAN}
 \edef\mdseries@mc{\mddefault}% m
 \edef\mdseries@gt{\mddefault}% m
 \fi
-\ifx\expand@font@defaults\@undefined\else %<*2020-02-02|2020-10-01>
-\ifx\AddToHook\@undefined % --- for 2020-02-02 BEGIN
+\ifx\expand@font@defaults\@undefined\else %<*2020-02-02|2020-10-01|.>
+\ifnum\pltx@newhook@avail=\z@ % --- for == 2020-02-02 BEGIN
 \g@addto@macro\expand@font@defaults{%
   \edef\mcdef@ult{\mcdefault}%
   \edef\gtdef@ult{\gtdefault}%
   \edef\kanjidef@ult{\kanjifamilydefault}%
 }
-\else % --- for 2020-02-02 END & for 2020-10-01 BEGIN
+\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>
-\ifx\bfseries@rm\@undefined\else %<*2020-02-02|2020-10-01>
-\ifx\AddToHook\@undefined % --- for 2020-02-02 BEGIN
+\fi   % --- for >= 2020-10-01 END
+\fi %</2020-02-02|2020-10-01|.>
+\ifx\bfseries@rm\@undefined\else %<*2020-02-02|2020-10-01|.>
+\ifnum\pltx@newhook@avail=\z@ % --- for == 2020-02-02 BEGIN
 \DeclareRobustCommand\bfseries{%
   \not@math@alphabet\bfseries\mathbf
   \expand@font@defaults
@@ -1370,7 +1376,7 @@ of this package available from CTAN}
     \fi\fi
   \selectfont
 }
-\else % --- for 2020-02-02 END & for 2020-10-01 BEGIN
+\else % --- for == 2020-02-02 END & for >= 2020-10-01 BEGIN
 \AddToHook{bfseries/defaults}{%
     \let\bfseries@mc\bfdef@ult
     \let\bfseries@gt\bfdef@ult
@@ -1393,8 +1399,8 @@ of this package available from CTAN}
     \else                        \kanjiseries\mddefault
     \fi\fi
 }
-\fi % --- for 2020-10-01 END
-\fi %</2020-02-02|2020-10-01>
+\fi   % --- for >= 2020-10-01 END
+\fi %</2020-02-02|2020-10-01|.>
 \ifx\prepare@family@series@update\@undefined  % old
 \let\prepare@family@series@update@kanji\@undefined
 \let\@meta@family@list@kanji\@undefined
@@ -1475,14 +1481,14 @@ of this package available from CTAN}
 }
 \fi
 \expandafter\ifx\csname init@series@setup\endcsname\relax
-\else   %<*2020-02-02|2020-10-01>
-\ifx\AddToHook\@undefined % --- for 2020-02-02 BEGIN
+\else   %<*2020-02-02|2020-10-01|.>
+\ifnum\pltx@newhook@avail=\z@ % --- 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
 }%
-\else % --- for 2020-02-02 END & for 2020-10-01 BEGIN
+\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
@@ -1491,15 +1497,14 @@ of this package available from CTAN}
   \fi
   % !! sync with 2020/04/13 v3.1n END
 }%
-\fi % --- for 2020-10-01 END
-\fi     %</2020-02-02|2020-10-01>
-\ifx\AddToHook\@undefined
-\else % --- for LaTeX2e 2020-10-01 or later BEGIN
+\fi   % --- for >= 2020-10-01 END
+\fi     %</2020-02-02|2020-10-01|.>
+\ifnum\pltx@newhook@avail>\z@ % --- for >= 2020-10-01 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
+\fi                           % --- for >= 2020-10-01 END
 \ifx\prepare@family@series@update@kanji\@undefined  % old
 \DeclareRobustCommand\mcfamily
         {\not@math@alphabet\mcfamily\mathmc
diff --git a/Master/texmf-dist/tex/platex/base/plcore.ltx b/Master/texmf-dist/tex/platex/base/plcore.ltx
index 97f42e307b2..b3189fc5399 100644
--- a/Master/texmf-dist/tex/platex/base/plcore.ltx
+++ b/Master/texmf-dist/tex/platex/base/plcore.ltx
@@ -35,7 +35,7 @@
 \def\pfmtname{pLaTeX2e}
 \def\pfmtversion
    {2020-10-01}
-\def\ppatch@level{0}
+\def\ppatch@level{1}
 \edef\platexBANNER{\noexpand\platexNILa
                    \the\everyjob % LaTeX banner and delayed codes
                    \noexpand\platexNILb}
@@ -52,6 +52,8 @@
   \global\everyjob\expandafter\expandafter\expandafter{\platexBANNER}%
 \endgroup
 \let\platexBANNER=\@undefined
+\chardef\pltx@newhook@avail=\z@
+\@ifl@t@r\fmtversion{2020/10/01}{\chardef\pltx@newhook@avail=\@ne}{}
 \newif\if@plincludeinrelease
 \@plincludeinreleasefalse
 \def\plIncludeInRelease#1{%
@@ -987,7 +989,7 @@
   \ifin@ \usekanji{#1}{#2}{#3}{#4}%
   \else\useroman{#1}{#2}{#3}{#4}%
   \fi}
-\ifx\AddToHook\@undefined % --- for 2020-02-02 or older BEGIN
+\ifnum\pltx@newhook@avail=\z@ % --- for <= 2020-02-02 BEGIN
 \ifx\@defaultfamilyhook\@undefined  % old
 \DeclareRobustCommand\normalfont{%
     \kanjiencoding{\kanjiencodingdefault}%
@@ -1007,14 +1009,14 @@
     \edef\k@shape{\kanjishapedefault}%
 }
 \fi                                 % done
-\else % --- for 2020-02-02 or older END & for 2020-10-01 BEGIN
+\else % --- for <= 2020-02-02 END & for >= 2020-10-01 BEGIN
 \AddToHook{normalfont}{%
     \kanjiencoding{\kanjiencodingdefault}%
     \edef\k@family{\kanjifamilydefault}%
     \edef\k@series{\kanjiseriesdefault}%
     \edef\k@shape{\kanjishapedefault}%
 }
-\fi % --- for 2020-10-01 END
+\fi   % --- for >= 2020-10-01 END
 \adjustbaseline
 \let\reset@font\normalfont
 \ifx\bfseries@rm\@undefined  % old
@@ -1028,23 +1030,23 @@
 \edef\mdseries@mc{\mddefault}% m
 \edef\mdseries@gt{\mddefault}% m
 \fi
-\ifx\expand@font@defaults\@undefined\else %<*2020-02-02|2020-10-01>
-\ifx\AddToHook\@undefined % --- for 2020-02-02 BEGIN
+\ifx\expand@font@defaults\@undefined\else %<*2020-02-02|2020-10-01|.>
+\ifnum\pltx@newhook@avail=\z@ % --- for == 2020-02-02 BEGIN
 \g@addto@macro\expand@font@defaults{%
   \edef\mcdef@ult{\mcdefault}%
   \edef\gtdef@ult{\gtdefault}%
   \edef\kanjidef@ult{\kanjifamilydefault}%
 }
-\else % --- for 2020-02-02 END & for 2020-10-01 BEGIN
+\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>
-\ifx\bfseries@rm\@undefined\else %<*2020-02-02|2020-10-01>
-\ifx\AddToHook\@undefined % --- for 2020-02-02 BEGIN
+\fi   % --- for >= 2020-10-01 END
+\fi %</2020-02-02|2020-10-01|.>
+\ifx\bfseries@rm\@undefined\else %<*2020-02-02|2020-10-01|.>
+\ifnum\pltx@newhook@avail=\z@ % --- for == 2020-02-02 BEGIN
 \DeclareRobustCommand\bfseries{%
   \not@math@alphabet\bfseries\mathbf
   \expand@font@defaults
@@ -1077,7 +1079,7 @@
     \fi\fi
   \selectfont
 }
-\else % --- for 2020-02-02 END & for 2020-10-01 BEGIN
+\else % --- for == 2020-02-02 END & for >= 2020-10-01 BEGIN
 \AddToHook{bfseries/defaults}{%
     \let\bfseries@mc\bfdef@ult
     \let\bfseries@gt\bfdef@ult
@@ -1100,8 +1102,8 @@
     \else                        \kanjiseries\mddefault
     \fi\fi
 }
-\fi % --- for 2020-10-01 END
-\fi %</2020-02-02|2020-10-01>
+\fi   % --- for >= 2020-10-01 END
+\fi %</2020-02-02|2020-10-01|.>
 \ifx\prepare@family@series@update\@undefined  % old
 \let\prepare@family@series@update@kanji\@undefined
 \let\@meta@family@list@kanji\@undefined
@@ -1182,14 +1184,14 @@
 }
 \fi
 \expandafter\ifx\csname init@series@setup\endcsname\relax
-\else   %<*2020-02-02|2020-10-01>
-\ifx\AddToHook\@undefined % --- for 2020-02-02 BEGIN
+\else   %<*2020-02-02|2020-10-01|.>
+\ifnum\pltx@newhook@avail=\z@ % --- 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
 }%
-\else % --- for 2020-02-02 END & for 2020-10-01 BEGIN
+\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
@@ -1198,15 +1200,14 @@
   \fi
   % !! sync with 2020/04/13 v3.1n END
 }%
-\fi % --- for 2020-10-01 END
-\fi     %</2020-02-02|2020-10-01>
-\ifx\AddToHook\@undefined
-\else % --- for LaTeX2e 2020-10-01 or later BEGIN
+\fi   % --- for >= 2020-10-01 END
+\fi     %</2020-02-02|2020-10-01|.>
+\ifnum\pltx@newhook@avail>\z@ % --- for >= 2020-10-01 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
+\fi                           % --- for >= 2020-10-01 END
 \ifx\prepare@family@series@update@kanji\@undefined  % old
 \DeclareRobustCommand\mcfamily
         {\not@math@alphabet\mcfamily\mathmc
@@ -2066,7 +2067,7 @@
   \let\document@default@language\m@ne
 \fi
 %% File: plvers.dtx
-\ifx\AddToHook\@undefined
+\ifnum\pltx@newhook@avail=\z@
 \expandafter\def\expandafter\process@table\expandafter{%
   \expandafter\p@warn@latexrelease\process@table}
 \begingroup
diff --git a/Master/texmf-dist/tex/platex/base/plext.sty b/Master/texmf-dist/tex/platex/base/plext.sty
index 26c09cacc30..115fde7b68c 100644
--- a/Master/texmf-dist/tex/platex/base/plext.sty
+++ b/Master/texmf-dist/tex/platex/base/plext.sty
@@ -15,7 +15,7 @@
 %% File: plext.dtx
 \NeedsTeXFormat{pLaTeX2e}
 \ProvidesPackage{plext}
-   [2019/09/29 v1.2l pLaTeX package file (community edition)]
+   [2020/10/07 v1.2m pLaTeX package file (community edition)]
 \newif\if@rotsw
 \def\array{\let\@acol\@arrayacol \let\@classz\@arrayclassz
   \let\@classiv\@arrayclassiv
@@ -465,30 +465,40 @@
 \newdimen\save@ybaselineshift
 \newdimen\save@tbaselineshift
 \newdimen\@picwd
+\ifx\@defaultunitsset\@undefined     % old
+  \def\X@picture@dimens#1#2#3#4{%
+    \@picwd=#1\unitlength \@picht=#2\unitlength
+    \@tempdima=#3\unitlength \@tempdimb=#4\unitlength
+  }
+\else                                % 2020-10-01
+  \def\X@picture@dimens#1#2#3#4{%
+    \@defaultunitsset\@picwd{#1}\unitlength
+    \@defaultunitsset\@picht{#2}\unitlength
+    \@defaultunitsset\@tempdima{#3}\unitlength
+    \@defaultunitsset\@tempdimb{#4}\unitlength
+  }
+\fi
 \def\@@picture<#1>(#2,#3)(#4,#5){%
   \save@ybaselineshift\ybaselineshift
   \save@tbaselineshift\tbaselineshift
   \iftdir
     \if#1y\let\box@dir\yoko
-      \@picwd=#3\unitlength \@picht=#2\unitlength
-      \@tempdima=#5\unitlength \@tempdimb=#4\unitlength
+      \X@picture@dimens{#3}{#2}{#5}{#4}%
     \else\let\box@dir\tate
-      \@picwd=#2\unitlength \@picht=#3\unitlength
-      \@tempdima=#4\unitlength \@tempdimb=#5\unitlength
+      \X@picture@dimens{#2}{#3}{#4}{#5}%
     \fi
   \else
     \if#1t\let\box@dir\tate
-      \@picwd=#3\unitlength \@picht=#2\unitlength
-      \@tempdima=#5\unitlength \@tempdimb=#4\unitlength
+      \X@picture@dimens{#3}{#2}{#5}{#4}%
     \else\let\box@dir\yoko
-      \@picwd=#2\unitlength \@picht=#3\unitlength
-      \@tempdima=#4\unitlength \@tempdimb=#5\unitlength
+      \X@picture@dimens{#2}{#3}{#4}{#5}%
     \fi
   \fi
-  \setbox\@picbox\hbox to\@picwd\bgroup\box@dir
-  \hskip-\@tempdima\lower\@tempdimb\hbox\bgroup
-  \ybaselineshift\z@ \tbaselineshift\z@
-  \ignorespaces}
+  \setbox\@picbox\hb@xt@\@picwd\bgroup\box@dir
+    \hskip-\@tempdima
+    \lower\@tempdimb\hbox\bgroup
+      \ybaselineshift\z@ \tbaselineshift\z@
+      \ignorespaces}
 \def\endpicture{%
   \egroup\hss\egroup
   \ht\@picbox\@picht \wd\@picbox\@picwd \dp\@picbox\z@