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+%D \module
+%D [ file=cont-log,
+%D version=1995.10.10,
+%D title=\CONTEXT\ Miscellaneous Macros,
+%D subtitle=\TEX\ Logos,
+%D author=J. Hagen,
+%D date=\currentdate,
+%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
+%C
+%C This module is part of the \CONTEXT\ macro||package and is
+%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
+%C details.
+
+\writestatus{loading}{ConTeXt TeX Logos}
+
+%D The system that is used to typeset this text is called \TEX,
+%D typeset with an lowered~E. From te beginning of \TEX,
+%D authors of macro packages adapted this raising and lowering
+%D style. In this module we define some of those logos.
+
+%D The Computer Modern detection hack is gone as we now have Latin
+%D Modern which has more kerning pairs.
+
+\unprotect
+
+\def\Mkern#1%
+ {{\setbox\scratchbox\hbox{M}\kern#1\wd\scratchbox}}
+
+\unexpanded\def\TeX
+ {T%
+ \Mkern{-.1667}\lower.5ex\hbox{E}%
+ \Mkern{-.125}X}
+
+\unexpanded\def\ConTeXt{Con\TeX t}
+\unexpanded\def\PPCHTeX{ppch\TeX}
+\unexpanded\def\PRAGMA {Pragma ADE}
+
+\unexpanded\def\LaTeX % requested by erik frambach
+ {{\setbox\scratchbox\hbox{L}%
+ \scratchdimen\ht\scratchbox
+ \setbox\scratchbox\hbox{\txx A}%
+ L\kern-.55\wd\scratchbox
+ \raise\scratchdimen\hbox{\lower\ht\scratchbox\copy\scratchbox}%
+ \kern-.2\wd\scratchbox\TeX}}
+
+\unexpanded\def\TaBlE
+ {T%
+ \kern-.27em\lower.5ex\hbox{A}%
+ \kern-.18emB%
+ \kern-.1em\lower.5ex\hbox{L}%
+ \kern-.075emE}
+
+\unexpanded\def\PiCTeX
+ {P%
+ \kern-.12em\lower.5ex\hbox{I}%
+ \kern-.075em C%
+ \kern-.11em\TeX}
+
+\def\AMSswitch#1%
+ {$\cal\ifdim\bodyfontsize>1.1em\scriptstyle\fi#1$}
+
+\unexpanded\def\AmSTeX
+ {\AMSswitch A%
+ \kern-.1667em\lower.5ex\hbox{\AMSswitch M}%
+ \kern-.125em\AMSswitch S%
+ -\TeX}
+
+\unexpanded\def\LamSTeX
+ {L%
+ \kern-.4em\raise.3ex\hbox{\AMSswitch A}%
+ \kern-.25em\lower.4ex\hbox{\AMSswitch M}%
+ \kern-.1em{\AMSswitch S}%
+ -\TeX}
+
+\unexpanded\def\AmSLaTeX
+ {\AMSswitch A%
+ \kern-.1667em\lower.5ex\hbox{\AMSswitch M}%
+ \kern-.125em\AMSswitch S%
+ -\LaTeX}
+
+%D Alternative \CONTEXT\ logo, first Idris S.~Hamid's version:
+%D
+%D \def\Context
+%D {{\sc C\kern -.0667emo\kern -.0667emn\kern -.0549emt\kern
+%D -.1667em\lower.5ex\hbox {e}\kern -.125emx\kern -.0549emt}}
+%D
+%D I changed this into one that adapts itself:
+
+\unexpanded\def\Context
+ {{C\kern -.0667em\getscaledglyph{.8}\empty{O\kern -.0667emN\kern
+ -.0549emT\doifitalicelse{\kern-.1em}{\kern-.1667em}\lower.5ex\hbox
+ {E}\doifitalicelse\empty{\kern-.11em}X\kern-.055emT}}}
+
+%D The \METAFONT\ and \METAPOST\ logos adapt themselves to the
+%D current fontsize, an ugly but usefull hack.
+
+% rather hard coded
+%
+% \loadmapfile[original-base.map] % \loadmapfile[original-vogel-symbol]
+%
+% \unexpanded\def\setMFPfont
+% {\font\logofont=logo%
+% \ifnum\fam=\bffam\c!bf\else
+% \ifnum\fam=\slfam\c!sl\else
+% \ifnum\fam=\itfam\c!sl\else
+% \ifnum\fam=\bsfam\c!bf\else
+% \ifnum\fam=\bifam\c!bf\else
+% \fi\fi\fi\fi\fi
+% 10 at \currentfontscale\bodyfontsize
+% \logofont}
+%
+% or:
+%
+% \definefontsynonym [MetaLogo] [logo10]
+% \definefontsynonym [MetaLogoBold] [logobf10]
+% \definefontsynonym [MetaLogoSlanted] [logosl10]
+% \definefontsynonym [MetaLogoItalic] [logosl10]
+% \definefontsynonym [MetaLogoBoldSlanted] [logobf10]
+% \definefontsynonym [MetaLogoBoldtalic] [logobf10]
+%
+% \loadmapfile[original-base.map] % \loadmapfile[original-vogel-symbol]
+%
+% \def\setMFPfont{\symbolicfont{MetaLogo}}
+
+\let\logofont\nullfont
+
+\loadmapfile[original-base.map]
+
+\unexpanded\def\setMFPfont% more sensitive for low level changes
+ {\font\logofont=logo%
+ \ifx\fontalternative\c!bf\else
+ \ifx\fontalternative\c!it\else
+ \ifx\fontalternative\c!sl\else
+ \ifx\fontalternative\c!bi\else
+ \ifx\fontalternative\c!bs\else
+ \fi\fi\fi\fi\fi
+ 10 at \currentfontscale\bodyfontsize
+ \logofont}
+
+%\unexpanded\def\MetaFont%
+% {\hbox{\setMFPfont METAFONT}}
+%
+%\unexpanded\def\MetaPost%
+% {\hbox{\setMFPfont METAPOST}}
+
+\def\MetaHyphen% there is no hyphenchar in this font
+ {\discretionary{\vrule\!!height.33em\!!depth-.27em\!!width.33em}{}{}}
+
+\unexpanded\def\MetaFont
+ {{\setMFPfont META\MetaHyphen FONT}}
+
+\unexpanded\def\MetaPost
+ {{\setMFPfont META\MetaHyphen POST}}
+
+\unexpanded\def\MetaFun
+ {MetaFun}
+
+%D \macros
+%D {TEX, METAFONT, METAPOST, METAFUN,
+%D PICTEX, TABLE,
+%D CONTEXT, PPCHTEX,
+%D AMSTEX, LATEX, LAMSTEX}
+%D
+%D We define the funny written ones as well as the less
+%D error prone upper case names (in \CONTEXT\ we tend to
+%D write all user defined commands, like abbreviations, in
+%D uppercase.)
+
+\unexpanded\def\METAFONT {\MetaFont}
+\unexpanded\def\METAPOST {\MetaPost}
+\unexpanded\def\PPCHTEX {\PPCHTeX}
+\unexpanded\def\CONTEXT {\ConTeXt}
+\unexpanded\def\METAFUN {\MetaFun}
+
+\unexpanded\def\TEX {\TeX}
+\unexpanded\def\LATEX {\LaTeX}
+\unexpanded\def\PICTEX {\PiCTeX}
+\unexpanded\def\TABLE {\TaBlE}
+\unexpanded\def\AMSTEX {\AmSTeX}
+\unexpanded\def\LAMSTEX {\LamSTeX}
+\unexpanded\def\INRSTEX {inrs\TeX}
+
+%D And this is how they show up: \TeX, \MetaFont, \MetaPost,
+%D \PiCTeX, \TaBlE, \ConTeXt, \PPCHTeX, \AmSTeX, \LaTeX,
+%D \LamSTeX.
+
+%D Some placeholders:
+
+\unexpanded\def\eTeX {\mathematics{\varepsilon}-\TeX}
+\unexpanded\def\pdfTeX {pdf\TeX}
+\unexpanded\def\pdfeTeX{pdfe-\TeX}
+\unexpanded\def\luaTeX {lua\TeX}
+\unexpanded\def\metaTeX{meta\TeX}
+\unexpanded\def\XeTeX {X\lower.5ex\hbox{\kern-.15em\mirror{E}}\kern-.1667em\TeX}
+
+% Adapted from a patch by Mojca:
+
+\def\@XeTeX@
+ {\setbox\scratchbox\hbox{E}%
+ \raise\dimexpr\ht\scratchbox+\dp\scratchbox\relax\hbox{\rotate[\c!rotation=180]{\box\scratchbox}}}
+
+\ifnum\texengine=\pdftexengine
+
+ \unexpanded\def\XeTeX
+ {X\lower.5ex
+ \hbox
+ {\kern-.15em
+ \ifx\fontalternative\c!bf\mirror{E}\else
+ \ifx\fontalternative\c!it \@XeTeX@\else
+ \ifx\fontalternative\c!sl \@XeTeX@\else
+ \ifx\fontalternative\c!bi \@XeTeX@\else
+ \ifx\fontalternative\c!bs \@XeTeX@\else
+ \mirror{E}\fi\fi\fi\fi\fi}%
+ \kern-.1667em \TeX}
+
+\else
+
+ \unexpanded\def\XeTeX
+ {X\lower.5ex
+ \hbox
+ {\kern-.15em
+ \iffontchar\font"018E\relax
+ \char"018E%
+ \else
+ \ifx\fontalternative\c!bf\mirror{E}\else
+ \ifx\fontalternative\c!it \@XeTeX@\else
+ \ifx\fontalternative\c!sl \@XeTeX@\else
+ \ifx\fontalternative\c!bi \@XeTeX@\else
+ \ifx\fontalternative\c!bs \@XeTeX@\else
+ \mirror{E}\fi\fi\fi\fi\fi
+ \fi}%
+ \kern-.1667em \TeX}
+
+\fi
+
+\let\ETEX \eTeX
+\let\PDFTEX \pdfTeX
+\let\PDFETEX\pdfeTeX
+\let\LUATEX \luaTeX
+\let\LuaTeX \luaTeX
+\let\XETEX \XeTeX
+
+\unexpanded\def\MkApproved % joke, not used so it might move
+ {\dontleavehmode\rotate
+ [\c!rotation={\ifnum\texengine=\luatexengine\ctxlua{tex.write(45-45*\the\luatexversion/100)}\else0\fi},
+ \c!align=\v!middle,
+ \c!foregroundstyle=\v!type,
+ \c!foregroundcolor=darkred,
+ \c!frame=\v!on,
+ \c!offset=1ex,
+ \c!background=\v!color,
+ \c!backgroundcolor=lightgray,
+ \c!framecolor=darkred,
+ \c!rulethickness=2pt]
+ {Mk\ifnum\texengine=\luatexengine IV\else II\fi\\approved}}
+
+% \unexpanded\def\luaTeX
+% {\dontleavehmode\begingroup
+% Lua%
+% \setbox0\hbox{oT}%
+% \setbox2\hbox{o\kern0ptT}%
+% \ifdim\wd0=\wd2
+% \setbox0\hbox dir TRT{To}%
+% \setbox2\hbox{T\kern0pto}%
+% \hskip\dimexpr\wd0-\wd2\relax
+% \fi
+% \TeX
+% \endgroup}
+%
+% a further iteration from the list, patched again
+
+% \ifx\fontalternative\c!it -\else
+% \ifx\fontalternative\c!sl -\else
+% \ifx\fontalternative\c!bi -\else
+% \ifx\fontalternative\c!bs -\fi\fi\fi\fi
+
+\def\LuaTeX
+ {\dontleavehmode
+ \begingroup
+ Lua%
+ % hope for kerning, try aT
+ \setbox0\hbox{aT}%
+ \setbox2\hbox{a\kern\zeropoint T}%
+ \ifdim\wd0=\wd2 % kerns can go two ways
+ % no aT kerning, try oT as a is not symmetrical
+ \setbox0\hbox{oT}%
+ \setbox2\hbox{o\kern\zeropoint T}%
+ \ifdim\wd0=\wd2 % kerns can go two ways
+ % no aT and oT kerning, try To
+ \setbox0\hbox{To}%
+ \setbox2\hbox{T\kern\zeropoint o}%
+ % maybe we need to compensate for the angle (sl/it/bs/bi)
+ \fi
+ \ifdim\wd0=\wd2\else
+ \kern\dimexpr\wd0-\wd2\relax
+ \fi
+ \fi
+ \TeX
+ \endgroup}
+
+\let\luaTeX \LuaTeX
+\let\LUATEX \LuaTeX
+
+\protect \endinput
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