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%D \module
%D [ file=syst-prm,
%D version=1999.03.17,
%D title=\CONTEXT\ System Macros,
%D subtitle=Primitive Behavior,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA / 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
%D Saved primitives are preceded by \type {\normal}, as in:
\let\normalfmtversion\fmtversion
%D When applicable, we also load the \ETEX\ source and
%D definition files.
\bgroup \obeylines
\ifx\eTeXversion\undefined
\long\gdef\beginETEX#1\endETEX%
{}
\gdef\beginTEX%
{\bgroup\obeylines\dobeginTEX}
\gdef\dobeginTEX#1
{\egroup}
\global\let\endTEX\relax
\else
\long\gdef\beginTEX#1\endTEX%
{}
\gdef\beginETEX%
{\bgroup\obeylines\dobeginETEX}
% \gdef\dobeginETEX#1
% {\egroup\immediate\write16%
% {system (E-TEX) : [line \the\inputlineno] \detokenize{#1}}}
\gdef\dobeginETEX#1
{\egroup}
\global\let\endETEX\relax
\fi
\ifx\OmegaVersion\undefined
\long\gdef\beginOMEGA#1\endOMEGA%
{}
\else
\gdef\beginOMEGA%
{\bgroup\obeylines\dobeginOMEGA}
\ifx\detokenize\undefined
\gdef\dobeginOMEGA#1
{\egroup\immediate\write16%
{system (OMEGA) : [line \the\inputlineno] \string#1 }} % we assume an argument
\else
\gdef\dobeginOMEGA#1
{\egroup\immediate\write16%
{system (OMEGA) : [line \the\inputlineno] \detokenize{#1}}} % we assume aleph
\fi
\global\let\endOMEGA\relax
\fi
\ifx\XeTeXversion\undefined
\long\gdef\beginXETEX#1\endXETEX%
{}
\else
\gdef\beginXETEX%
{\bgroup\obeylines\dobeginXETEX}
\gdef\dobeginXETEX#1
{\egroup\immediate\write16%
{system (XETEX) : [line \the\inputlineno] \detokenize{#1}}}
\global\let\endXETEX\relax
\fi
\ifx\directlua\undefined
\long\gdef\beginMETATEX#1\endMETATEX%
{}
\else
\gdef\beginMETATEX%
{\bgroup\obeylines\dobeginMETATEX}
\gdef\dobeginMETATEX#1
{\egroup\immediate\write16%
{system (METATEX) : [line \the\inputlineno] \detokenize{#1}}}
\global\let\endMETATEX\relax
\fi
\egroup
%D Let's get rid of this one:
\def\wlog#1{}
%D Just for tracing purposes we set:
\tracingstats=1
%D We don't like outer commands, and we always want access
%D to the original \type {\input} primitive.
\let\normalouter = \outer \let\outer\relax
\let\normalinput = \input
%D We need to make sure that we start up in \DVI\ mode, so,
%D after testing for running \PDFTEX, we default to \DVI.
\ifx\pdftexversion\undefined \newcount\pdfoutput \fi \pdfoutput=0
%D To circumvent dependencies, we can postpone certain
%D initializations to dumping time, by appending them to the
%D \type {\everydump} token register.
\newtoks \everydump
\let\normaldump \dump
\def\dump{\the\everydump\normaldump}
%D \macros
%D {bindprimitive}
\beginTEX
\def\bindprimitive#1 #2 % new old
{\expandafter\ifx\csname#1\endcsname\relax \expandafter\ifx\csname#2\endcsname\relax \else
\expandafter\let\csname#1\expandafter\endcsname\csname#2\endcsname
\fi\fi}
\endTEX
\beginETEX
\def\bindprimitive#1 #2 % new old
{\ifcsname#1\endcsname \else\ifcsname#2\endcsname
\expandafter\let\csname#1\expandafter\endcsname\csname#2\endcsname
\fi\fi}
\endETEX
% %D Ligature prevention (for instance, ec encoding has ligatures
% %D in mono spaced fonts). Alas, we need to do some testing in order
% %D to get to the ptex'd one.
% \def\checkpdftexprimitive #1
% {\expandafter\ifx\csname #1\endcsname\relax
% \expandafter\ifx\csname pdf#1\endcsname\relax
% \expandafter\ifx\csname ptex#1\endcsname\relax
% \expandafter\let\csname normal#1\endcsname \undefined \else
% \expandafter\let\csname normal#1\expandafter\endcsname\csname ptex#1\endcsname \fi \else
% \expandafter\let\csname normal#1\expandafter\endcsname\csname pdf#1\endcsname \fi \else
% \expandafter\let\csname normal#1\expandafter\endcsname\csname #1\endcsname \fi}
% \checkpdftexprimitive quitvmode
% \checkpdftexprimitive noligatures
% \checkpdftexprimitive setrandomseed
% \checkpdftexprimitive uniformdeviate
%D We preserve \TEX's ending:
\ifx\normalend\undefined \let\normalend\end \fi
\protect \endinput
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