+
+\ifdefined\@rmfamilyhook
+%%%% LaTeX 2020-02-02
+\newif\ifltj@@latex@plv@develop
+\ifx\series@maybe@drop@one@m\@undefined % patch level 0--4
+ \@latex@error
+ {Please update LaTeX2e!^^J\space\space
+ At least LaTeX2e 2020-02-02 patch level 5 is required}
+ {LaTeX2e 2020-02-02 patch level 2 and 4 has a bug.}
+\else
+ \unless\ifx\series@maybe@drop@one@m@x\@undefined % patch level 5
+ \ltj@@latex@plv@developtrue
+ \fi
+\fi
+
+\def\merge@kanji@series#1{%
+ \expandafter\expandafter\expandafter
+ \merge@kanji@series@
+ \csname series@\k@series @#1\endcsname
+ {#1}%
+ \@nil
+}
+
+\ifltj@@latex@plv@develop % 2020-02-02 pl5 + develop
+ \def\set@target@series@kanji#1{%
+ \edef\k@series{#1}%
+ \series@maybe@drop@one@m\k@series\k@series
+ }
+\else
+ \def\set@target@series@kanji#1{%
+ \edef\k@series{#1}%
+ \expandafter\series@maybe@drop@one@m\expandafter{\k@series}\k@series
+ }
+\fi
+
+\def\merge@kanji@series@#1#2#3\@nil{%
+ \def\reserved@a{#3}%
+ \ifx\reserved@a\@empty
+ \set@target@series@kanji{#2}%
+ \else
+ \begingroup\let\f@encoding\k@encoding\let\f@family\k@family
+ \maybe@load@fontshape\endgroup
+ \edef\reserved@a{\k@encoding /\k@family /#1/\k@shape}%
+ \ifcsname \reserved@a \endcsname
+ \set@target@series@kanji{#1}%
+ \else
+ \ifcsname \k@encoding /\k@family /#2/\k@shape \endcsname
+ \set@target@series@kanji{#2}%
+ {\let\curr@fontshape\curr@kfontshape\@font@shape@subst@warning}%
+ \else
+ \set@target@series@kanji{#3}%
+ {\let\curr@fontshape\curr@kfontshape\@font@shape@subst@warning}%
+ \fi
+ \fi
+ \fi
+}
+\def\merge@kanji@shape#1{%
+ \expandafter\expandafter\expandafter
+ \merge@kanji@shape@
+ \csname shape@\k@shape @#1\endcsname
+ {#1}%
+ \@nil
+}
+\def\merge@kanji@shape@#1#2#3\@nil{%
+ \def\reserved@a{#3}%
+ \ifx\reserved@a\@empty
+ \edef\k@shape{#2}%
+ \else
+ \begingroup\let\f@encoding\k@encoding\let\f@family\k@family
+ \maybe@load@fontshape\endgroup
+ \edef\reserved@a{\k@encoding /\k@family /\k@series/#1}%
+ \ifcsname \reserved@a\endcsname
+ \edef\k@shape{#1}%
+ \else
+ \ifcsname \k@encoding /\k@family /\k@series/#2\endcsname
+ \edef\k@shape{#2}%
+ {\let\curr@fontshape\curr@kfontshape\@font@shape@subst@warning}%
+ \else
+ \edef\k@shape{#3}%
+ {\let\curr@fontshape\curr@kfontshape\@font@shape@subst@warning}%
+ \fi
+ \fi
+ \fi
+}
+\DeclareRobustCommand\romanseries[1]{\@forced@seriesfalse\merge@font@series{#1}}
+\DeclareRobustCommand\kanjiseries[1]{\@forced@seriesfalse\merge@kanji@series{#1}}
+\DeclareRobustCommand\fontseries[1]{%
+ \@forced@seriesfalse\merge@font@series{#1}\merge@kanji@series{#1}}
+\DeclareRobustCommand\romanseriesforce[1]{\@forced@seriestrue\merge@font@series{#1}}
+\DeclareRobustCommand\kanjiseriesforce[1]{\@forced@seriestrue\merge@kanji@series{#1}}
+\DeclareRobustCommand\fontseriesforce[1]{%
+ \@forced@seriestrue\merge@font@series{#1}\merge@kanji@series{#1}}
+\DeclareRobustCommand\romanshape[1]{\merge@font@shape{#1}}
+\DeclareRobustCommand\kanjishape[1]{\merge@kanji@shape{#1}}
+\DeclareRobustCommand\fontshape[1]{%
+ \merge@font@shape{#1}\merge@kanji@shape{#1}}
+\DeclareRobustCommand\romanshapeforce[1]{\edef\f@shape{#1}}
+\DeclareRobustCommand\kanjishapeforce[1]{\edef\k@shape{#1}}
+\DeclareRobustCommand\fontshapeforce[1]{\kanjishapeforce{#1}\romanshapeforce{#1}}
+\DeclareRobustCommand\usekanji[4]{%
+ \kanjiencoding{#1}\edef\k@family{#2}\edef\k@series{#3}\edef\k@shape{#4}%
+ \selectfont\ignorespaces}
+\DeclareRobustCommand\useroman[4]{%
+ \romanencoding{#1}\edef\f@family{#2}\edef\f@series{#3}\edef\f@shape{#4}%
+ \selectfont\ignorespaces}
+\else
+%%%% LaTeX 2019-10-01