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+%
+% pxbase.def
+%
+
+% Note: bxbase.def and pxbase.def provide same set of functionality.
+% To avoid version clash, when a version of one of them is loaded,
+% load of an older version of the other is aborted.
+
+%%%% stuffs read when \input'ed
+\ifx\bxbaseOk\undefined
+\bgroup
+\catcode`\@=11
+\gdef\bx@defextension{def}
+\gdef\bx@ver@#1{\expandafter\expandafter\expandafter\@parse@version
+ \csname ver@#1.\@currext\endcsname//00\@nil}
+ %% \bxInputDefFile{<def_name>}
+\gdef\bxInputDefFile#1{\@onefilewithoptions{#1}[][]\bx@defextension}
+ %% \bxCheckCPart{<def_name>}
+\gdef\bxCheckCPart#1{%
+ \@ifl@aded\@currext{#1}{%
+ \ifnum\bx@ver@{#1}>\bx@ver@\@currname \expandafter\endinput\fi}{}}
+\egroup
+\let\bxbaseOk=t
+\bxInputDefFile{pxbase} %% read this file again
+\expandafter\endinput\fi
+
+%%--------------- folloing stuffs are read by \bxTnext
+
+%%%% file declaration
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesFile{pxbase.def}[2010/06/15 v0.5 BX/PX base library]
+\bxCheckCPart{bxbase}
+%* v0.5.r13
+
+%%%% error messages
+\def\bx@b@pkgname{BX/PXbase} % bundle name
+\def\bx@b@error{\PackageError\bx@b@pkgname}
+\def\bx@err@nobbl{\bx@b@error{babel not yet loaded}\@eha}
+\def\bx@err@oorng{\bx@b@error{Number out of range}\@eha}
+\def\bx@err@nanbc{\bx@b@error{Non-BMP characters not supported}\@eha}
+\def\bx@err@ilnfm{\bx@b@error{Illegal number format}\@eha}
+\def\bx@err@uddrv#1{\bx@b@error{\string#1 is undefined}\@eha}
+
+%%%% common stuffs
+\ifx\bxUcv\@undefined
+\newcount\bxUcv % argument of \bx@Ux
+\fi
+\newif\ifbxOk % all-purpsoe switch
+\let\bxHex\relax % result of \bxToHex...
+\let\bxRes\relax % result of \bxToLower
+\edef\bx@b@resetcatcodes{% < ! " ' + ^ >
+ \catcode33=\the\catcode33\catcode34=\the\catcode34%
+ \catcode39=\the\catcode39\catcode43=\the\catcode43%
+ \catcode94=\the\catcode94\relax}
+\catcode33=12 \catcode34=12 \catcode39=12 \catcode43=12
+\catcode94=6
+
+%%------ Programming tools
+
+%%%% \bxNullify\CS
+% Make \CS void and unoverridable by \providecommand.
+\def\bxNullify#1{\global\let#1\bx@nullified}
+\def\bx@nullified{\@gobble\bx@@nullified}
+
+%%%% \bxDebug{<text>}
+% If \bxUseDebug is defined when bxbase is loaded, this command
+% prints debug messages; otherwise it is ignored.
+%\let\bx@typeout\typeout
+%\ifx\bxUseDebug\@undefined \let\bxDebug\@gobble
+%\else \def\bxDebug#1{\bx@typeout{BX debug: #1}}\fi
+\providecommand*\bxDebug{\@gobble}
+
+%%%% \bxCheckMA\CS <text> \bxEndCheckMA
+% If this construct appears in moving arguments, it expands to
+% an error message command.
+\def\bxCheckMA{\let\bx@chkma@a\bx@chkma@a\noexpand}
+\let\bxEndCheckMA\@empty \let\bx@chkma@z\relax
+\def\bx@chkma@a#1{\bx@chkma@z\relax\bx@chkma@b}
+\def\bx@chkma@b#1#2#3\bxEncCheckMA{\noexpand\bx@err@ivfrg#1#2}
+\def\bx@err@ivfrg#1{\bx@b@error{Cannot use \string#1 here}\@eha}
+
+%%------ TeX engine distinction
+
+%%%% \bxIfPrimitive\CS{<yes>}{<no>}
+% Checks if \CS is a primitive.
+\def\bxIfPrimitive#1{%
+ \edef\bx@tmpa{\string#1}\edef\bx@tmpb{\meaning#1}%
+ \ifx\bx@tmpa\bx@tmpb \expandafter\@firstoftwo
+ \else \expandafter\@secondoftwo \fi}
+
+%%%% \bxEngineTypeX / \bxEngineTypeY
+% Numbers that signify what I am.
+ % \bxEngineTypeX values
+\chardef\bxETTeX=0 % none of those
+\chardef\bxETpTeX=1 % pTeX-extended
+\chardef\bxETXeTeX=2 % XeTeX-extended
+\chardef\bxETOmega=3 % Omega-extended
+ % \bxEngineTypeY values (plus \bxETTeX)
+\chardef\bxETeTeX=1 % e-TeX-extended
+\chardef\bxETpdfTeX=3 % pdfTeX-extended
+ % (here old pdfTeX without e-TeX is ignored)
+ %
+\bxIfPrimitive\kansuji{\let\bxEngineTypeX\bxETpTeX}{%
+\bxIfPrimitive\XeTeXversion{\let\bxEngineTypeX\bxETXeTeX}{%
+\bxIfPrimitive\Omegaversion{\let\bxEngineTypeX\bxETOmega}{%
+ \let\bxEngineTypeX\bxETTeX}}}
+\bxIfPrimitive\eTeXversion{\let\bxEngineTypeY\bxETeTeX}{%
+\bxIfPrimitive\pdftexversion{\let\bxEngineTypeY\bxETpdfTeX}{%
+ \let\bxEngineTypeY\bxETTeX}}
+
+%%%% \bx@b@uptex
+\bxIfPrimitive\kchar{\chardef\bx@b@uptex\@ne}{\chardef\bx@b@uptex\z@}
+
+%%------ Babel something
+
+%%<+> \bxBDHookBabel
+% A begindocument-hook about Babel.
+\newif\ifbx@bbl@inuse
+\def\bx@bbl@bdhook{}
+\providecommand\bxBDHookBabel{\bx@bdhook@babel@do}
+\def\bx@bdhook@babel@do{%
+ \AtBeginDocument{%
+ \@ifpackageloaded{babel}{%
+ \bx@bbl@inusetrue
+ \ifx\bx@bbl@captlang\@undefined\else \bx@bbl@do@captlang \fi
+ \bx@bbl@bdhook
+ }{}}%
+ \bxNullify\bxBDHookBabel}
+\@onlypreamble\bxBDHookBabel
+\@onlypreamble\bx@bdhook@babel@do
+
+%%<+> \bxAtBeginDocumentBabel{<text>}
+% Register a begin-document hook that willl be invoked only when babel
+% is loaded.
+\def\bxAtBeginDocumentBabel{%
+ \g@addto@macro\bx@bbl@bdhook}
+\@onlypreamble\bxAtBeginDocumentBabel
+\@onlypreamble\bx@bbl@bdhook
+
+%%%% \bx@bbl@patch@sel@lang
+% A patch to \select@language that disables automatic switching of
+% caption language.
+\def\bx@bbl@patch@sel@lang{% this wlll be never invoked twice
+ \global\let\bx@bbl@org@select@language\select@language
+ \gdef\select@language##1{%
+ \bx@bbl@copy{**C}{##1}\bx@bbl@copy{##1}{**Z}%
+ \bx@bbl@org@select@language{##1}\bx@bbl@copy{##1}{**C}}}
+\@onlypreamble\bx@bbl@patch@sel@lang
+
+%%%% \bx@bbl@do@captlang
+\def\bx@bbl@@main{main}
+\def\bx@bbl@@default{default}
+\def\bx@bbl@do@captlang{%
+ % set captions
+ \ifx\bx@bbl@captlang\bx@bbl@@main
+ \let\bx@bbl@captlang\bbl@main@language \fi
+ \ifx\bx@bbl@captlang\bx@bbl@@default
+ \else\expandafter\ifx\csname l@\bx@bbl@captlang\endcsname\relax
+ \@nolanerr\bx@bbl@captlang
+ \else \csname date\bx@bbl@captlang\endcsname
+ \csname captions\bx@bbl@captlang\endcsname
+ \fi\fi}
+\@onlypreamble\bx@bbl@do@captlang
+
+%%%% \bx@bbl@copy{<lang1>}{<lang2>}
+% Copies \captions... and \date... for save.
+\def\bx@bbl@copy#1#2{%
+ \bx@bbl@copy@a{#1}{#2}{captions}%
+ \bx@bbl@copy@a{#1}{#2}{date}}
+\def\bx@bbl@copy@a#1#2#3{%
+ \edef\bx@tmpa{\let\expandafter\noexpand\csname#3#1\endcsname
+ \expandafter\noexpand\csname#3#2\endcsname}\bx@tmpa}
+\@namedef{captions**Z}{\@empty}
+\@namedef{date**Z}{\@empty}
+
+%%<*> \bxcaptionlanguage{<lang>}
+% Change the caption language manually, with disabling automatic
+% switching on it.
+\def\bxcaptionlanguage#1{%
+ \@ifpackageloaded{babel}%
+ {\ifx\bx@bbl@captlang\@undefined \bx@bbl@patch@sel@lang \fi
+ \xdef\bx@bbl@captlang{#1}}%
+ {\bx@err@nobbl}}
+\@onlypreamble\bxcaptionlanguage
+
+%%<*> \bxmainlanguage{<lang>}
+% Changes the 'main' language (one that is effective at beginning).
+\def\bxmainlanguage#1{%
+ \expandafter\ifx\csname date#1\endcsname\relax
+ \@nolanerr{#1}\fi
+ \xdef\bbl@main@language{#1}}
+\@onlypreamble\bxmainlanguage
+
+%%<+> \bxTrivLangDef{<lang>}
+% Makes a fake language option.
+\def\bxTrivLangDef#1{%
+ \@ifundefined{date#1}{%
+ \@ifundefined{l@#1}%
+ {\expandafter\chardef\csname l@#1\endcsname\z@}{}%
+ \@namedef{date#1}{\relax}%
+ \@namedef{captions#1}{\relax}%
+ \@namedef{extras#1}{\relax}%
+ \@namedef{noextras#1}{\relax}%
+ \@namedef{date#1}{\relax}%
+ }{}}
+\@onlypreamble\bxTrivLangDef
+
+%%------ 'Number-to-hex-string' functions
+% All public commands put their result in \bxHex.
+
+%%%% preparation
+\newif\ifbx@hx@bigchar
+\ifnum\bxEngineTypeX>\@ne \bx@hx@bigchartrue \fi
+\ifnum\bx@b@uptex>\z@ \bx@hx@bigchartrue \fi
+
+%%<+> \bxToHexTiny
+% For one-to-two-digit hex strings.
+\def\bxToHexTiny#1{%
+ \chardef\bxHex=#1\relax
+ \expandafter\bx@hx@tohextiny@a\meaning\bxHex\@nil}
+\def\bx@hx@tohextiny@a#1"#2\@nil{\def\bxHex{#2}}
+
+%%<+> \bxToHexSmall
+% For one-to-three-digit hex strings.
+\def\bxToHexSmall#1{%
+ \mathchardef\bxHex=#1\relax
+ \expandafter\bx@hx@tohexsmall@a\meaning\bxHex\@nil}
+\def\bx@hx@tohexsmall@a#1"#2\@nil{\def\bxHex{#2}}
+
+%%<+> \bxToHexTwo
+% For zero-padded two-digit hex strings.
+\def\bxToHexTwo#1{%
+ \chardef\bxHex=#1\relax
+ \expandafter\bx@hx@tohextwo@a\meaning\bxHex"0\@nil}
+\def\bx@hx@tohextwo@a#1"#2#3#4#5\@nil{\bx@hx@tohextwo@b#2#3#4\@nil}
+\def\bx@hx@tohextwo@b#1"#2\@nil{\def\bxHex{#2#1}}
+
+%%<+> \bxToHexThree
+% For zero-padded three-digit hex strings.
+\def\bxToHexThree#1{%
+ \mathchardef\bxHex=#1\relax
+ \expandafter\bx@hx@tohexthree@a\meaning\bxHex"00\@nil}
+\def\bx@hx@tohexthree@a#1"#2#3#4#5#6\@nil{\bx@hx@tohexthree@b#2#3#4#5\@nil}
+\def\bx@hx@tohexthree@b#1"#2\@nil{\def\bxHex{#2#1}}
+
+%%<+> \bxToHexFour
+% For zero-padded four-digit hex strings.
+\ifbx@hx@bigchar %----<*bigchar>
+\def\bxToHexFour#1{%
+ \chardef\bxHex=#1\relax
+ \expandafter\bx@hx@tohexfour@a\meaning\bxHex"000\@nil}
+\def\bx@hx@tohexfour@a#1"#2#3#4#5#6#7\@nil{\bx@hx@tohexfour@b#2#3#4#5#6\@nil}
+\def\bx@hx@tohexfour@b#1"#2\@nil{\def\bxHex{#2#1}}
+\else %----<*!bigchar>
+\mathchardef\bx@hx@fzzz="4000
+\def\bxToHexFour#1{\bgroup
+ \@tempcnta=#1\relax\@tempcntb\@tempcnta\divide\@tempcntb\bx@hx@fzzz
+ \ifcase\@tempcntb \advance\@tempcnta\bx@hx@fzzz \or \or
+ \advance\@tempcnta-\bx@hx@fzzz \or \advance\@tempcnta-"8000 \or
+ \@tempcnta\z@ \fi
+ \mathchardef\bx@hx@tmp\@tempcnta
+ \expandafter\bx@hx@tohexfour@a\meaning\bx@hx@tmp\@nil
+ \egroup \let\bxHex\bx@hx@gtmp}
+\def\bx@hx@tohexfour@a#1"#2#3\@nil{%
+ \expandafter\let\expandafter\bx@hx@tmp
+ \csname bxhx@X/\the\@tempcntb#2\endcsname
+ \ifx\bx@hx@tmp\relax \bx@err@oorng \global\let\bx@hx@gtmp\@empty
+ \else \xdef\bx@hx@gtmp{\bx@hx@tmp#3}\fi}
+\def\bx@hx@nxt#1#2#3{\bgroup\catcode`#3=12
+ \global\expandafter\def\csname bxhx@X/#1#2\endcsname{#3}\egroup}
+\@for\bx@hx@tmp:={040,051,062,073,144,155,166,177,248,259,26A,27B,%
+ 34C,35D,36E,37F}\do{\expandafter\bx@hx@nxt\bx@hx@tmp}
+\fi %----</bigchar>
+
+%%<+> \bxToHexFive
+%%<+> \bxToHexFiveX
+% For zero-padded five-digit hex strings.
+\def\bxToHexFive{\bx@tohexfive@aa\relax}
+\def\bxToHexFiveX{\bx@tohexfive@aa
+ {\ifnum\@tempcnta>\bx@hx@vdmax \@tempcnta=\bx@hx@vdmax\fi}}
+\ifbx@hx@bigchar %----<*bigchar>
+\chardef\bx@hx@vdmax="FFFFF
+\def\bx@tohexfive@aa#1#2{%
+ {\@tempcnta=#2\relax#1\global\chardef\bx@hx@gtmp=\@tempcnta}%
+ \expandafter\bx@hx@tohexfivex@a\meaning\bx@hx@gtmp"0000\@nil}
+\def\bx@hx@tohexfivex@a#1"#2#3#4#5#6#7#8\@nil{%
+ \bx@hx@tohexfivex@b#2#3#4#5#6#7\@nil}
+\def\bx@hx@tohexfivex@b#1"#2\@nil{\edef\bxHex{#2#1}}
+\else %----<*!bigchar>
+\edef\bx@hx@vdmax{"FFFFF\space}
+\def\bx@tohexfive@aa#1#2{%
+ \bgroup \@tempcnta=#2\relax#1%
+ \@tempcntb=\@tempcnta \divide\@tempcnta\bx@hx@m\relax
+ \bxToHexTwo\@tempcnta \let\bx@hx@tmp\bxHex
+ \multiply\@tempcnta-\bx@hx@m\advance\@tempcnta\@tempcntb\relax
+ \bxToHexThree\@tempcnta \xdef\bx@hx@gtmp{\bx@hx@tmp\bxHex}%
+ \egroup \let\bxHex\bx@hx@gtmp}
+\fi %----</bigchar>
+
+%%<+> \bxToHexEight
+% For zero-padded eight-digit hex strings.
+\def\bxToHexEight#1{%
+ \bgroup \@tempcnta=#1\relax
+ \@tempcntb=\@tempcnta\divide\@tempcnta\p@\relax
+ \bxToHexFour\@tempcnta \let\bx@hx@tmp\bxHex
+ \multiply\@tempcnta-\p@\advance\@tempcnta\@tempcntb\relax
+ \bxToHexFour\@tempcnta \xdef\bx@hx@gtmp{\bx@hx@tmp\bxHex}%
+ \egroup \let\bxHex\bx@hx@gtmp}
+
+%%<+> \bxToHexUC
+% For zero-padded four-to-six-digit hex strings.
+\ifbx@hx@bigchar %----<*bigchar>
+\def\bxToHexUC#1{%
+ \chardef\bxHex=#1\relax
+ \expandafter\bx@hx@tohexuc@a\meaning\bxHex"\@empty\@empty000\@nil}
+\def\bx@hx@tohexuc@a#1"#2#3#4#5#6#7#8#9\@nil{%
+ \bx@hx@tohexuc@b#2#3#4#5#6#7#8\@nil}
+\def\bx@hx@tohexuc@b#1"#2\@nil{\edef\bxHex{#2#1}}
+\else %----<*!bigchar>
+\mathchardef\bx@hx@m="1000
+\def\bxToHexUC#1{%
+ \bgroup \@tempcnta=#1\relax
+ \@tempcntb=\@tempcnta \divide\@tempcnta\bx@hx@m\relax
+ \bxToHexSmall\@tempcnta \let\bx@hx@tmp\bxHex
+ \multiply\@tempcnta-\bx@hx@m\advance\@tempcnta\@tempcntb\relax
+ \bxToHexThree\@tempcnta \xdef\bx@hx@gtmp{\bx@hx@tmp\bxHex}%
+ \egroup \let\bxHex\bx@hx@gtmp}
+\fi %----</bigchar>
+
+%%<+> \bxToDecFour
+\def\bxToDecFour#1{%
+ \expandafter\bx@hx@todecfour@a\number#1"000\@nil}
+\def\bx@hx@todecfour@a#1#2#3#4#5#6\@nil{\bx@hx@todecfour@b#1#2#3#4#5\@nil}
+\def\bx@hx@todecfour@b#1"#2\@nil{\def\bxHex{#2#1}}
+
+%%<+> \bxToDecFive
+\def\bxToDecFive#1{%
+ \expandafter\bx@hx@todecfive@a\number#1"0000\@nil}
+\def\bx@hx@todecfive@a#1#2#3#4#5#6#7\@nil{\bx@hx@todecfive@b#1#2#3#4#5#6\@nil}
+\def\bx@hx@todecfive@b#1"#2\@nil{\def\bxHex{#2#1}}
+
+%%------ Input through code values
+
+%%<+> \bxBDHookUnicode
+% A begindocument-hook about Unicode (& CID) input.
+\providecommand\bxBDHookUnicode{\bx@bdhook@unicode@do}
+\def\bx@bdhook@unicode@do{%
+ \AtBeginDocument{\bx@assign@Ux}%
+ \bxNullify\bxBDHookUnicode}
+\@onlypreamble\bxBDHookUnicode
+\@onlypreamble\bx@bdhook@unicode@do
+
+%%<+> \bxBDHookJisInput
+% A begindocument-hook about JIS-code input.
+\providecommand\bxBDHookJisInput{\bx@bdhook@jisinput@do}
+\def\bx@bdhook@jisinput@do{%
+ \AtBeginDocument{\bx@assign@JI}%
+ \bxNullify\bxBDHookJisInput}
+\@onlypreamble\bxBDHookJisInput
+\@onlypreamble\bx@bdhook@jisinput@do
+
+%%<+> \bxFallbackSym
+\def\bxFallbackSym#1{\leavevmode\bx@fbs@fnt{\dimen@=\bx@junit\relax
+ \hb@xt@\dimen@{\hss\vrule\@width\z@\@height.88\dimen@\@depth.12\dimen@
+ \frame{\lower.04\dimen@\hb@xt@.84\dimen@{\hss\vbox to.84\dimen@{\vss
+ \hsize=.84\dimen@\baselineskip\z@\lineskip.01\dimen@\parskip\z@skip
+ \leftskip\@flushglue\rightskip\@flushglue\parfillskip\z@skip
+ \parindent\z@\let\\\bx@fbs@c\leavevmode\let\sml=\bx@fbs@fs\bx@fbs@f
+ #1\unskip\par\vss}\hss}}\hss}}}
+\edef\bx@junit{\ifnum\bxEngineTypeX=\@ne 1zw\else 1em\fi}
+\def\bx@fbs@c{\unskip\par\ignorespaces}
+\def\bx@fbs@fnt{\global\let\bx@fbs@fnt\relax
+ \global\font\bx@fbs@fs=phvr at 2.4pt
+ \global\font\bx@fbs@f=phvr at 3.6pt}
+
+%%<+> \bxCodeValueSeq\CS{<text>}
+% Dispatcher for code value sequences.
+\def\bxCodeValueSeq{%
+ \let\bx@cvseq@branch\bx@cvseq@branch@hex
+ \bx@cvseq@a}
+\def\bx@cvseq@a#1#2{%
+ {\catcode33=12%
+ \xdef\bx@gtmpa{\uppercase{\def\noexpand\bx@tmpa{#2}}}}%
+ \let\bx@cvseq@do=#1\bx@gtmpa\relax
+ \expandafter\bx@cvseq@b\bx@tmpa,!\@nil}
+\def\bx@cvseq@b{\futurelet\bx@toka\bx@cvseq@branch}
+\def\bx@cvseq@branch@hex{%
+ \if !\bx@toka \let\bx@nxt\bx@cvseq@fin
+ \else\if "\bx@toka \let\bx@nxt\bx@cvseq@pfx
+ \else\if '\bx@toka \let\bx@nxt\bx@cvseq@pfx
+ \else\if +\bx@toka \let\bx@nxt\bx@cvseq@pfx
+ \else \let\bx@nxt\bx@cvseq@hex \fi\fi\fi\fi
+ \bx@nxt}
+\def\bx@cvseq@pfx{%
+ \afterassignment\bx@cvseq@post \bxUcv=}
+\def\bx@cvseq@hex{%
+ \afterassignment\bx@cvseq@post \bxUcv="0}
+\def\bx@cvseq@post#1{%
+ \if ,#1\expandafter\bx@cvseq@post@a
+ \else \bx@err@ilnfm \expandafter\bx@cvseq@fin \fi}
+\def\bx@cvseq@post@a{%
+ \bx@cvseq@do \bx@cvseq@b}
+\def\bx@cvseq@fin#1\@nil{}
+
+%%<+> \bxCodeValueSeqD\CS{<text>}
+% Same as \bxCodeValueSeq, except that it defaults to decimal.
+\def\bxCodeValueSeqD{%
+ \let\bx@cvseq@branch\bx@cvseq@branch@dec \bx@cvseq@a}
+\def\bx@cvseq@branch@dec{%
+ \if !\bx@toka \let\bx@nxt\bx@cvseq@fin
+ \else \let\bx@nxt\bx@cvseq@pfx \fi
+ \bx@nxt}
+
+%%<+> \bxUx, \bxUI, \bxAJ, \bxJI, \bxKI
+% The prefixed names for \Ux, etc. They are (more likely to be)
+% collision-safe.
+\let\bxUx\relax
+\DeclareRobustCommand*\bxUx{\bxCodeValueSeq\bx@Ux}
+\let\bxUI\relax
+\DeclareRobustCommand*\bxUI{\bxCodeValueSeq\bx@UI}
+\let\bxAJ\relax
+\DeclareRobustCommand*\bxAJ{\bxCodeValueSeqD\bx@AJ}
+\let\bxJI\relax
+\DeclareRobustCommand*\bxJI{\bxCodeValueSeq\bx@JI}
+\let\bxKI\relax
+\DeclareRobustCommand*\bxKI{\bxCodeValueSeqD\bx@KI}
+
+%%<+> \bxUHex{<value>}, \bxUInt{<value>}
+% Alternative entry points for \Ux. The code value is specified in
+% hexadecimal (\bxUHex) / decimal (\bxUInt) numerals.
+\def\bxUHex{\protect\bx@Uxh}
+\def\bxUqInt{\protect\bx@UInt}
+\def\bx@UInt#1{\bxUcv=#1\relax\bx@Ux}
+
+%% \bx@UIh@fb, \bx@AJ@fb
+\def\bx@UIh@fb#1{\bxUcv="#1\relax\bxToHexFive\bxUcv
+ \expandafter\bx@b@fb@five\bxHex[Ux]}
+\def\bx@AJ@fb{\bxToDecFive\bxUcv
+ \expandafter\bx@b@fb@five\bxHex[AJ]}
+\def\bx@JI@fb{\bxToHexFour\bxUcv
+ \expandafter\bx@b@fb@four\bxHex[JI]}
+\def\bx@KI@fb{\bxToDecFive\bxUcv
+ \expandafter\bx@b@fb@five\bxHex[KI]}
+\def\bx@b@fb@five#1#2#3#4#5#6[#7]{%
+ \bxFallbackSym{{\sml#7}\\\bx@hx@supzero#1#2#3\\#4#5}}
+\def\bx@b@fb@four#1#2#3#4#5[#6]{%
+ \bxFallbackSym{{\sml#6}\\#1#2\\#3#4}}
+\def\bx@hx@supzero#1{\ifx0#1\else\expandafter#1\fi}
+
+%%%% \bx@assign@Ux
+% Picks up appropriate drivers \bx@Ux etc. according to current
+% load-states of packages.
+% [driver] [purpose] [argument] [default]
+% \bx@Ux Unicode \bxUcv go to \bx@UI
+% \bx@Uxh Unicode #1(hex) go to \bx@UIh
+% \bx@UI Unicode-ideo. \bxUcv go to \bx@UIh
+% \bx@UIh Unicode-ideo. #1(hex) fallback
+% \bx@AJ Adobe-Japan1 \bxUcv fallback
+% From the default value it can be said:
+% - Implemetations for \bx@Ux(h) must fallback on \bx@UI(h) when
+% they cannot be handle the given character, unless such fallback
+% is known to be useless.
+% - When you implement one of \bx@Ux or \bx@Uxh, then you must also
+% implement the other.
+% - When you implement \bx@UI, then you must also implement \bx@UIh.
+% (But you can implement only \bx@UIh.)
+ % Initial values
+\def\bx@Ux{\bx@UI} % pass to \bx@UI
+\def\bx@Uxh{\bx@UIh} % pass to \bx@UIh
+\def\bx@UI{\bxToHexUC\bxUcv\bx@UIh\bxHex} % pass to \bx@UIh
+\let\bx@UIh\bx@UIh@fb % 'fallback' driver
+\let\bx@AJ\bx@AJ@fb % 'fallback' driver
+ % some helpers
+ % one more step put so that \UTF could be redefined
+\def\bx@UIh@otf{\UTF}
+ % \UMS with the argument expanded
+\def\bx@UIh@ums#1{\expandafter\UMS\expandafter{#1}}
+ % \CID with \bxUcv
+\def\bx@AJ@otf{\CID\bxUcv}
+\def\bx@assign@Ux{%
+ % If I have bxucs, then set \bx@Ux to \bx@Ux@ucs
+ % (which fallbacks on \bx@UI in failure).
+ \@ifpackageloaded{bxucs}{%
+ \let\bx@Ux\bx@Ux@ucs\let\bx@Uxh\bx@Uxh@ucs}{}%
+ % If I have ums or bxsuika then I use \UMS as \bx@UIh driver.
+ \@ifpackageloaded{ums}{\bxOktrue}{\bxOkfalse}
+ \@ifpackageloaded{bxsuika}{\bxOktrue}{}
+ \ifbxOk \let\bx@UIh\bx@UIh@UMS \fi
+ % If I have utf or otf then I use \UTF as \bx@UIh driver.
+ \@ifpackageloaded{utf}{\bxOktrue}{\bxOkfalse}
+ \@ifpackageloaded{otf}{\bxOktrue}{}
+ \ifbxOk \let\bx@UIh\bx@UIh@otf \let\bx@AJ\bx@AJ@otf \fi
+ % pxotf is same as otf, except that it also provides a direct
+ % way to \bx@UI and \bx@AJ.
+ \@ifpackageloaded{pxotf}{%
+ \let\bx@UIh\bxUIh@otf \let\bx@UI\pxUcvUTF \let\bx@AJ\pxUcvCID}{}%
+ % If I am upTeX I use \kchar.
+ \ifnum\bx@b@uptex>\z@
+ \def\bx@UI{\kchar\bxUcv}\def\bx@UIh##1{\kchar"##1\relax}%
+ % If I am a Unicode-aware engine, then...
+ \else\ifnum\bxEngineTypeX>\@ne %
+ \def\bx@UI{\char\bxUcv}\def\bx@UIh##1{\char"##1\relax}%
+ \let\bx@Ux\bx@UI \let\bx@Uxh\bx@UIh
+ % zxjatype provides better handling of \UI & \Ux.
+ \@ifpackageloaded{zxjatype}{%
+ \let\bx@UI\zxjt@UI \let\bx@UIh\zxjt@UIh
+ \let\bx@Ux\zxjt@Ux \let\bx@Uxh\zxjt@Uxh}{}%
+ % zxotf provides \CID comamnd.
+ \@ifpackageloaded{zxotf}{%
+ \def\bx@AJ{\CID\bxUcv}}{}%
+ \fi\fi
+ % If \bx@UIh@usr is known I use it.
+ \ifx\bx@UIh@usr\@undefined\else \let\bx@UIh\bx@UIh@usr \fi
+ \let\bx@setuidriver@a\bx@setuidriver@b
+ \ifx\bx@AJ@usr\@undefined\else \let\bx@AJ\bx@AJ@usr \fi
+ \let\bx@setajdriver@a\bx@setajdriver@b
+}
+\@onlypreamble\bx@assign@Ux
+
+%%%% \setUIdriver\CS
+\def\setUIdriver#1{%
+ \ifx#1\@undefined \bx@err@uddrv#1%
+ \else \bx@setuidriver@a#1\fi}
+\def\bx@setuidriver@a#1{\let\bx@UIh@usr#1}
+\def\bx@setuidriver@b#1{\let\bx@UIh#1}
+
+%%%% \setAJdriver\CS
+\def\setAJdriver#1{%
+ \ifx#1\@undefined \bx@err@uddrv#1%
+ \else \bx@setajdriver@a#1\fi}
+\def\bx@setajdriver@a#1{\let\bx@AJ@usr#1}
+\def\bx@setajdriver@b#1{\let\bx@AJ#1}
+
+%%%% \bx@assign@JI
+% Picks up appropriate drivers \bx@JI etc.
+% [driver] [purpose] [argument] [default]
+% \bx@JI JIS-code \bxUcv fallback
+% \bx@KI Kuten-code \bxUcv fallback
+\def\bx@JI{\bx@JI@fb}
+\def\bx@KI{\bx@KI@fb}
+\def\bx@assign@JI{%
+ % \JI & \KI are available only in (u)pTeX
+ \ifnum\bxEngineTypeX=\@ne
+ \def\bx@JI{\char\jis\bxUcv\relax}\let\bx@KI\bx@KI@pTeX
+ \fi
+}
+\ifnum\bxEngineTypeX=\@ne %----<*pTeX>
+%% \bx@KI@pTeX
+ % \KI{2????} (0213 plane 2) works only when kanji-internal=sjis
+\mathchardef\bx@ki@max=\ifnum\jis"2121="8140 30000\else 20000\fi\relax
+\mathchardef\bx@ki@myr=10000
+\mathchardef\bx@ki@bas="2020
+\let\bx@ki@char=\char
+\ifx\kchar\@undefined\else \let\bx@ki@char=\kchar \fi
+\def\bx@KI@pTeX{%
+ \ifnum\bxUcv<\bx@ki@max\else \bxUcv=\z@ \fi
+ \ifnum\bxUcv<\bx@ki@myr \advance\bxUcv\bx@ki@myr \fi
+ \expandafter\bx@ki@ptex@a\the\bxUcv\@nil
+ \bx@ki@char\jis\bxUcv\relax}
+\bgroup \@tempcnta=94
+ \@for\bx@tmpa:=01,08,03,04,05,12,13,14,15\do{\advance\@tempcnta\@ne
+ \expandafter\xdef\csname bx@JSH/\bx@tmpa\endcsname{\the\@tempcnta}}
+ \@tempcntb=77 \loop
+ \advance\@tempcnta\@ne \advance\@tempcntb\@ne
+ \expandafter\xdef\csname bx@JSH/\the\@tempcntb\endcsname
+ {\the\@tempcnta}%
+ \ifnum\@tempcntb<94 \repeat
+\egroup
+\def\bx@ki@ptex@a#1#2#3#4#5#6\@nil{%
+ \ifnum#1=\@ne \bxUcv=#2#3\relax
+ \else \bxUcv=0\csname bx@JSH/#2#3\endcsname\relax \fi
+ \multiply\bxUcv\@cclvi \advance\bxUcv#4#5\relax
+ \advance\bxUcv\bx@ki@bas}
+\fi %----</pTeX>
+\@onlypreamble\bx@assign@JI
+
+%%------ Assignment check
+
+%%%% \bxAssign <assignment>\relax
+\def\bxAssign{%
+ \bxOkfalse\afterassignment\bx@b@assign@a}
+\def\bx@b@assign@a#1\relax{%
+ \def\bx@tmpa{#1}\ifx\bx@tmpa\@empty\bxOktrue\fi}
+
+%%------ Case conversion
+
+%%%% \bxToLower{<string>}
+% Sets to \bxRes <string> converted to lowercase.
+\def\bxToLower#1{%
+ \edef\bxRes{\lowercase{\def\noexpand\bxRes{#1}}}\bxRes}
+
+%%%% \bxToUpper{<string>}
+\def\bxToUpper#1{%
+ \edef\bxRes{\uppercase{\def\noexpand\bxRes{#1}}}\bxRes}
+
+%%------ Document-level specials
+% Such specials must come before any typeset commands in DVI.
+
+%%%% \bxDocumentSpecial{<text>}
+% Appends \special{<text>} to the list of 'document-level specials'.
+% A simple use of \AtBeginDvi will do in this case.
+\def\bxDocumentSpecial#1{%
+ \AtBeginDvi{\special{#1}}}
+\@onlypreamble\bxDocumentSpecial
+
+%%%% \bxDocumentSpecialUrgent{<text>}
+% Similar to the above, but it demands that the given special be
+% placed as early as possible.
+\def\bxDocumentSpecialUrgent#1{%
+ \bx@docspec@urgent@init
+ \bx@prepend@box\bx@dsu@box{\special{#1}}}
+\def\bx@prepend@box#1#2{%
+ \global\setbox#1\vbox{#2\unvbox#1}}
+\providecommand\bx@docspec@urgent@init{\bx@docspec@urgent@init@do}
+\def\bx@docspec@urgent@init@do{%
+ \newbox\bx@dsu@box
+ \AtBeginDocument{%
+ \ifx\AtBeginShipoutFirst\@undefined
+ \bx@prepend@box\@begindvibox{\unvbox\bx@dsu@box}%
+ \else % 'atbegshi' package is in use
+ {\toks@{\unvbox\bx@dsu@box}%
+ \toks\tw@\expandafter{\AtBegShi@HookFirst}%
+ \xdef\AtBegShi@HookFirst{\the\toks@\the\toks\tw@}}
+ \fi}%
+ \bxNullify\bx@docspec@urgent@init}
+\@onlypreamble\bxDocumentSpecialUrgent
+\@onlypreamble\bx@docspec@urgent@init
+\@onlypreamble\bx@docspec@urgent@init@do
+
+%%%% \recordpapersize
+\def\recordpapersize{%
+ \bxDocumentSpecial{papersize=\the\paperwidth,\the\paperheight}%
+ \bxNullify\recordpapersize}
+\@onlypreamble\recordpapersize
+
+%%<*> \dvipdfmxmapline{<text>}
+%%<*> \dvipdfmxmapfile{<text>}
+\def\dvipdfmxmapline#1{\bxDocumentSpecial{pdf:mapline #1}}
+\@onlypreamble\dvipdfmxmapline
+\def\dvipdfmxmapfile#1{\bxDocumentSpecial{pdf:mapfile #1}}
+\@onlypreamble\dvipdfmxmapfile
+
+%%----- "safe-caret" module
+\newif\ifbx@acr@ok
+\newif\ifbx@acr@needed \bx@acr@neededfalse
+\newif\ifbx@safecaret \bx@safecaretfalse
+\catcode`\^=13
+
+%%%%<*> \safecaret
+\def\safecaret{%
+ \bx@safecarettrue}
+\@onlypreamble\safecaret
+
+%%%% \bxEnableSafeCaret
+\def\bxEnableSafeCaret{%
+ \bx@acr@neededtrue}
+\@onlypreamble\bxEnableSafeCaret
+
+%%%% \bx@acr@defbytes
+\def\bx@acr@defbytes{%
+ \bgroup\@tempcnta128\lccode`\Z=`\B\catcode`\^\active
+ \@whilenum\@tempcnta<256 \do{%
+ \lccode`\^\@tempcnta \chardef\bx@acr@tok\@tempcnta
+ \expandafter\bx@acr@defbytes@do@a\meaning\bx@acr@tok\@nil
+ \advance\@tempcnta\@ne}\egroup}
+\def\bx@acr@defbytes@do@a#1"#2\@nil{% name is bx@acr@B/ab etc.
+ \lowercase{\expandafter\gdef\csname bx@acr@Z/#2\endcsname{^}}}
+\@onlypreamble\bx@acr@defbytes
+\@onlypreamble\bx@acr@defbytes@do@a
+
+%%%% \bx@acr@caret
+%% This command should be \let'd to active <^>.
+\def\bx@acr@caret{%
+ \let\bx@acr@out\@empty \bx@acr@caret@a}
+\def\bx@acr@caret@a{%
+ \bx@acr@nextcaret{\bx@acr@caret@b}{\bx@acr@finish{\bx@acr@nxc}}}
+\def\bx@acr@caret@b#1{%
+ \let\bx@acr@hex\@empty
+ \bx@acr@nexthexdgt{\bx@acr@caret@c}{\bx@acr@finish{\bx@acr@nxdc}}}
+\def\bx@acr@caret@c#1{%
+ \edef\bx@acr@hex{#1}%
+ \bx@acr@nexthexdgt{\bx@acr@caret@d}{\bx@acr@finish{\bx@acr@nxdc\bx@acr@hex}}}
+\def\bx@acr@caret@d#1{%
+ \edef\bx@acr@hex{\bx@acr@hex#1}%
+ \expandafter\bx@acr@caret@e\csname bx@acr@B/\bx@acr@hex\endcsname
+ \bx@acr@ifok{\bx@acr@nextcaret{\bx@acr@caret@g}{\bx@acr@finish{}}}%
+ {\bx@acr@finish{\bx@acr@nxdc\bx@acr@hex}}}
+\def\bx@acr@caret@e#1{%
+ \ifx#1\relax \bx@acr@okfalse
+ \else \bx@acr@oktrue \expandafter\bx@acr@caret@f#1\fi}
+\def\bx@acr@caret@f#1{%
+ \expandafter\def\expandafter\bx@acr@out\expandafter{\bx@acr@out#1}}
+\def\bx@acr@caret@g#1{\bx@acr@caret@a}
+\def\bx@acr@nxc{\noexpand^}
+\def\bx@acr@nxdc{\noexpand^\noexpand^}
+\def\bx@acr@nextcaret#1#2{%
+ \def\bx@acr@tmpa{#1}\def\bx@acr@tmpb{#2}%
+ \futurelet\bx@acr@tok\bx@acr@nextcaret@a}
+\def\bx@acr@nextcaret@a{%
+ \let\bx@acr@nxt\bx@acr@tmpb
+ \ifx^\bx@acr@tok \let\bx@acr@nxt\bx@acr@tmpa
+ \fi \bx@acr@nxt}
+\def\bx@acr@nexthexdgt#1#2{%
+ \def\bx@acr@tmpa{#1}\def\bx@acr@tmpb{#2}%
+ \futurelet\bx@acr@tok\bx@acr@nexthexdgt@a}
+\def\bx@acr@nexthexdgt@a{%
+ \let\bx@acr@nxt\bx@acr@tmpb
+ \ifcat @\noexpand\bx@acr@tok \let\bx@acr@nxt\bx@acr@tmpa \fi
+ \ifcat "\noexpand\bx@acr@tok \let\bx@acr@nxt\bx@acr@tmpa \fi
+ \bx@acr@nxt}
+\def\bx@acr@ifok{%
+ \ifbx@acr@ok \expandafter\@firstoftwo \else \expandafter \@secondoftwo \fi}
+\def\bx@acr@finish#1{%
+ \edef\bx@acr@nxt{#1}%
+ \ifx\bx@acr@out\@empty \bx@acr@oktrue \else \bx@acr@okfalse \fi
+ \bx@acr@ifok{\expandafter\bx@acr@finish@a\bx@acr@nxt\@nil}%
+ {\expandafter\bx@acr@out\bx@acr@nxt}}
+\def\bx@acr@finish@a#1#2\@nil{%
+ % replace first ^ with normal one to avoid loop
+ \bx@acr@normcaret #2}
+\let\bx@acr@normcaret\sp % this does not mean much
+
+%%%% \bx@acr@initialize
+\def\bx@acr@initialize{%
+ \bx@acr@defbytes}
+\@onlypreamble\bx@acr@initialize
+
+%%%% \bx@acr@annihilate
+\def\bx@acr@annihilate{%
+ \let\bx@acr@caret\relax\let\bx@acr@caret@a\relax
+ \let\bx@acr@caret@b\relax\let\bx@acr@caret@c\relax
+ \let\bx@acr@caret@d\relax\let\bx@acr@caret@e\relax
+ \let\bx@acr@caret@f\relax\let\bx@acr@caret@g\relax
+ \let\bx@acr@nextcaret\relax\let\bx@acr@nextcaret@a\relax
+ \let\bx@acr@nexthexdgt\relax\let\bx@acr@nexthexdgt@a\relax
+ \let\bx@acr@finish\relax\let\bx@acr@finish@a\relax}
+\@onlypreamble\bx@acr@annihilate
+
+%%%% \bx@acr@babel@hookcaret
+\def\bx@acr@babel@hookcaret{%
+ \expandafter\ifx\csname active@char\string^\endcsname\relax\else
+ \declare@shorthand\system@group{^}{\bx@acr@caret}%
+ \let\bx@acr@normcaret\bx@acr@babel@normcaret
+ \bxEnableSafeCaret \fi}
+\@onlypreamble\bx@acr@babel@hookcaret
+\edef\bx@acr@babel@normcaret{%
+ \expandafter\noexpand\csname normal@char\string^\endcsname}
+
+%%%% \bx@acr@verbatim@hookcaret
+\def\bx@acr@verbatim@hookcaret{%
+ \g@addto@macro\@noligs{\catcode`\^\active\let^\bx@acr@caret
+ \let\bx@acr@normcaret\bx@acr@verb@normcaret}%
+ \bxEnableSafeCaret}
+\begingroup \catcode`\^=12
+\global\let\bx@acr@verb@normcaret=^\endgroup
+\@onlypreamble\bx@acr@verbatim@hookcaret
+
+%%%% begin-document hook
+\providecommand*\bxBDHookSafeCaret{\bx@bdhook@safecaret@do}
+\def\bx@bdhook@safecaret@do{%
+ \AtBeginDocument{%
+ %% function activated by '\safecaret'
+ \ifbx@safecaret
+ \@ifpackageloaded{babel}{\bx@acr@babel@hookcaret}{}%
+ \bx@acr@verbatim@hookcaret
+ \fi
+ %% initialize or annihilate...
+ \ifbx@acr@needed \bx@acr@initialize
+ \else \bx@acr@annihilate \fi
+ \let\bxEnableSafeCaret\@undefined}%
+ \bxNullify\bxBDHookSafeCaret}
+\@onlypreamble\bx@bdhook@safecaret@do
+
+\catcode`\^=6
+%%------ "shadow map" module
+
+%%%% \bxUseShadowMap\CS{<map_tfm>}
+\def\bxUseShadowMap#1#2{%
+ \global\font#1=#2\relax}
+
+%%%% \bxMap\CS
+\mathchardef\bx@m@cc=256
+\def\bxMap#1{\begingroup\count@\bxUcv\divide\count@\bx@m@cc
+ \chardef\bx@m@hb\count@ \multiply\count@\bx@m@cc
+ \advance\bxUcv-\count@ \setbox\z@\hbox{#1\bx@m@hb\char\bxUcv}%
+ \global\bxUcv\wd\z@ \endgroup}
+
+%%------ all done
+\bx@b@resetcatcodes \let\bx@nxt\relax
+\endinput
+%% EOF