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%D \module
%D [ file=spec-mis,
%D version=1997.04.01,
%D title=\CONTEXT\ Special Macros,
%D subtitle=Miscellaneous Macros,
%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 licen-en.pdf for
%C details.
%D Quite some modules in this group are dedicated to supporting
%D \PDF\ directly by means of \PDFTEX or indirectly by using
%D Acrobat Distiller. This module implements some common
%D features.
\writestatus{loading}{Context Special Macros / Miscellaneous Macros}
\unprotect
%D \macros
%D {URLhash}
%D
%D A rather trivial macro:
\expandafter\def\expandafter\URLhash\expandafter{\string#}
%D \macros
%D {ifusepagedestinations}
%D
%D In \PDF\ version 1.0 only page references were supported,
%D while in \DVIWINDO\ 1.N only named references were accepted.
%D Therefore \CONTEXT\ supports both methods of referencing. In
%D \PDF\ version 1.1 named destinations arrived. Lack of
%D continuous support of version 1.1 viewers for \MSDOS\
%D therefore sometimes forces us to prefer page references. As
%D a bonus, they are faster too and have no limitations. How
%D fortunate we were having both mechanisms available when the
%D version 3.0 (\PDF\ version 1.2) viewers proved to be too
%D bugged to support named destinations.
\newif\ifusepagedestinations
%D \macros
%D {dodoinsertfile,dofileinsertion,
%D definefileinsertion,doiffileinsertionsupported}
%D
%D File insertion depend on the driver or \TEX\ variant used.
%D All driver modules use the same scheme for file insertion,
%D and therefore have the next macro in common:
\def\dododoinsertfile[#1][#2,#3][#4,#5]%
{\def\fileinsertionclass{do#1insert}%
\doifdefinedelse{\fileinsertionclass#3}
{\def\next{\getvalue{\fileinsertionclass#3}}}
{\doifdefinedelse{\fileinsertionclass#2}
{\def\next{\getvalue{\fileinsertionclass#2}}}
{\def\next{\gobbleninearguments}}}%
\next{#4}{#5}}
\def\dodoinsertfile#1#2#3%
{\dododoinsertfile[#1][#2][#3]}
\def\definefileinsertion#1#2%
{\addtocommalist{#2}\supportedfileinsertions
\setvalue{do#1insert#2}}
\def\dofileinsertion#1#2%
{\getvalue{do#1insert#2}}
\newevery \everyresetspecials \relax
\appendtoks \let\supportedfileinsertions\empty \to \everyresetspecials
\let\supportedfileinsertions\empty
\def\doiffileinsertionsupportedelse#1%
{\ExpandBothAfter\doifinstringelse{#1}{\c!tex,\c!tmp,\supportedfileinsertions}}
%D This macro is called with 10 arguments, where the first
%D one specifies the driver, like \type{yy} or \type{tr}. The
%D second argument is a \type{{type,method}} pair and the
%D third the filename.
\protect
\endinput
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