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%% This is part of OpTeX project, see http://petr.olsak.net/optex
\_codedecl \TeX {Logos TeX, LuaTeX, etc. <2020-02-28>} % preloaded in format
\_doc ----------------------------
Despite plain \TeX/ each macro for logos ends by `\ignoreslash`.
This macro ignores next slash if it is present.
You can `use \TeX/ like this` for protecting the space following the logo.
This is visually more comfortable.
\_cod ----------------------------
\_protected\_def \_TeX {T\_kern-.1667em\_lower.5ex\_hbox{E}\_kern-.125emX\_ignoreslash}
\_protected\_def \_OpTeX {Op\kern-.1em\_TeX}
\_protected\_def \_LuaTeX {Lua\_TeX}
\_protected\_def \_XeTeX {X\_kern-.125em\_phantom E%
\_pdfsave\_rlap{\_pdfscale{-1}{1}\_lower.5ex\_hbox{E}}\_pdfrestore \_kern-.1667em \_TeX}
\_doc------------------------------
The `\_slantcorr` macro expands to slant-correction of current font. It is
used to shifting A if `\LaTeX` is in itallic.
\_cod -----------------------------
\_protected\_def \_LaTeX{\_tmpdim=.42ex L\_kern-.36em \_kern \_slantcorr % slant correction
\_raise \_tmpdim \_hbox{\_thefontscale[710]A}%
\_kern-.15em \_kern-\_slantcorr \_TeX}
\_def\_slantcorr{\_ea\_ignorept \_the\_fontdimen1\_font\_tmpdim}
\_def\_ignoreslash {\_futurelet\_next \_ignoreslashA}
\_def\_ignoreslashA {\_ifx\_next/\_ea\_ignoreit\_fi}
\_def\_OPmac{\_leavevmode
\_lower.2ex\_hbox{\_thefontscale[1400]O}\_kern-.86em P{\_em mac}\_ignoreslash}
\_def\_CS{$\_cal C$\_kern-.1667em\_lower.5ex\_hbox{$\_cal S$}\_ignoreslash}
\_def\_csplain{\_CS plain\_ignoreslash}
\_def\_ignslash#1{\_ifx/#1\_else #1\_fi}
\_doc ----------------------------
The expandable versions of logos used in Outlines needs the expandablle
`\_ingnslash` (instead of `\_ignoreslash`).
\_cod \_fin ----------------------
\_regmacro {}{}{% conversion for PDF outlines
\_def\TeX{TeX\_ignslash}\_def\OpTeX{OpTeX\_ignslash}%
\_def\LuaTeX{LuaTeX\_ignslash}\_def\XeTeX{XeTeX\_ignslash}%
\_def\LaTeX{LaTeX\_ignslash}\_def\OPmac{OPmac\_ignslash}%
\_def\CS{CS}\_def\csplain{csplain\_ignslash}%
}
\_public
\TeX \OpTeX \LuaTeX \XeTeX \LaTeX \OPmac \CS \csplain
\ignoreslash \ignoreit \ignorept ;
\_endcode
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