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%D \module
%D [ file=enco-run,
%D version=2000.27.12, % moved to runtime module
%D title=\CONTEXT\ Encoding Macros,
%D subtitle=Runtime Macros,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright=Hans Hagen \& Ton Otten]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
\unprotect
\gdef\visualizecharacters% {}'s needed
{\def\uchar##1##2{\hbox to 2.5em
{\ifcase##1\relax\red\or\blue\else\green\fi##1\hss##2}}%
\let\normalbuildtextaccent\buildtextaccent
\let\normalbottomaccent \bottomaccent
%\def\char{\green\normalchar}%
\def\char % can be used in \oalign
{\bgroup\def\char{\green\normalchar\scratchcounter\egroup}%
\afterassignment\char\scratchcounter}%
\def\buildtextaccent{\let\green\empty\blue\normalbuildtextaccent}%
\def\bottomaccent{\let\green\empty\red\normalbottomaccent}}
\unexpanded\gdef\visualizecharacterslegend
{\hbox
{\edef\banner{\currentencoding\space\fontname\font}%
\tttf\banner:\space
{\blue composed}\space{\red bottom}\space{\green char}\space raw}}
\gdef\showaccents
{\bgroup
\savefont
\setuptextrules[\c!bodyfont=,\c!style=]
\starttextrule{\visualizecharacterslegend}
\whitespace
\restorefont\setupinterlinespace
\visualizecharacters
\def\do##1%
{{\def\dodo####1%
{\hss\hbox to 1em{\hss\expanded{##1####1\recurselevel}\hss}}%
\hbox to \hsize
{\strut
\localcolortrue
\hbox to 2em{\tttf\string##1\hss}%
\dorecurse{26}{\dodo\character}}%
\hbox to \hsize
{\strut
\localcolortrue
\hskip2em
\dorecurse{26}{\dodo\Character}}}%
\par}
\do\'\do\`\do\^\do\~\do\"
\do\H\do\r\do\v\do\u\do\=
\do\.\do\b\do\d\do\k\do\c
\stoptextrule
\egroup}
\gdef\showcharacters
{\bgroup
\savefont
\setuptextrules[\c!bodyfont=,\c!style=]
\starttextrule{\visualizecharacterslegend}
\whitespace
\dontcomplain
\forgetall
\def\startencoding[##1]{}
\def\stopencoding{\endinput}
\dimen0=\zeropoint
\dimen2=\zeropoint
\def\definecharacter ##1 ##2 %
{\setbox0=\hbox spread 1em{\getvalue{##1}}%
\ifdim\wd0>\dimen0 \dimen0=\wd0 \fi
\setbox2=\hbox spread 1em{\box0 \tttf##1}
\ifdim\wd2>\dimen2 \dimen2=\wd2 \fi}%
\readsysfile{\f!encodingprefix def}{}{}
\edef\encwidth{\the\dimen0}
\dimen0=\hsize
\advance\dimen0 2em
\advance\dimen2 2em
\divide \dimen0 by \dimen2 \advance\dimen0 1sp
\edef\enccols{\number\dimen0}
\visualizecharacters
\startcolumns[\c!n=\enccols,\c!distance=2em]
\restorefont\setupinterlinespace
\def\definecharacter ##1 ##2 %
{\setbox0=\hbox to \hsize{\localcolortrue\hbox to \encwidth{\getvalue{##1}\hss}\tttf##1}%
\ht0\strutheight \dp0\strutdepth \box0 \allowbreak}
\readsysfile{\f!encodingprefix def}{}{}
\stopcolumns
\stoptextrule
\egroup}
% \hbox
% {\font\test=uplr8t \test \ruledhbox{t}
% \font\test=uplr8r \test \ruledhbox{t}}
\beginETEX \fontcharwd
\gdef\showcharacterbounds
{\bgroup
\localcolortrue
\dorecurse{255}
{\ifnum\fontcharwd\font\recurselevel>\zeropoint
\noindent\ruledhbox{\darkgray\char\recurselevel}\space
\fi}\unskip
\egroup}
\endETEX
\beginTEX
\gdef\showcharacterbounds
{\bgroup
\localcolortrue
\dorecurse{255}
{\setbox\scratchbox\ruledhbox{\darkgray\char\recurselevel}%
\ifnum\wd\scratchbox>\zeropoint
\noindent\box\scratchbox\space
\fi}\unskip
\egroup}
\endTEX
\gdef\showhyphenations#1%
{\starttabulate[|le|l|]
\NC language \NC \currentlanguage (code:\the\normallanguage) \NC \NR
\NC font \NC \fontname\font \NC \NR
\NC encoding \NC \currentencoding \NC \NR
\NC mapping \NC \currentencoding \NC \NR
\NC sample \NC \hyphenatedword{#1} \NC \NR
\stoptabulate}
\protect \endinput
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