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%D \module
%D [ file=core-pag,
%D version=2023.03.23, % moved from core-dat
%D title=\CONTEXT\ Core Macros,
%D subtitle=Multipass Pagestate,
%D author=Hans 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 Core Macros / Multipass Pagestate}
\unprotect
\newinteger\realpagestateno
\registerctxluafile{core-pag}{autosuffix}
\installcorenamespace{pagestate}
\installcorenamespace{pagestatecounter}
\installcommandhandler \??pagestate {pagestate} \??pagestate
\def\syst_pagestates_allocate
{\expandafter\newinteger\csname\??pagestatecounter\currentpagestate\endcsname}
\appendtoks
\syst_pagestates_allocate
\to \everydefinepagestate
\setuppagestate
[\c!delay=\v!yes]
\permanent\tolerant\protected\def\setpagestate[#1]#*[#2]%
{\begingroup
\cdef\currentpagestate{#1}%
\ifcsname\??pagestatecounter\currentpagestate\endcsname
\scratchcounter\lastnamedcs
\advanceby\scratchcounter\plusone
\else
\scratchcounter\plusone
\syst_pagestates_allocate
\fi
\global\csname\??pagestatecounter\currentpagestate\endcsname\scratchcounter
\clf_setpagestate
name {\currentpagestate}%
tag {\ifparameter#2\or#2\else\number\scratchcounter\fi}%
delay {\pagestateparameter\c!delay}%
\relax
\endgroup}
\permanent\protected\def\autosetpagestate#1%
{\setpagestate[#1]\relax}
\permanent\def\autopagestatenumber#1{\begincsname\??pagestatecounter#1\endcsname}
\permanent\def\pagestaterealpage #1#2{\clf_pagestaterealpage {#1}{#2}}
\permanent\def\setpagestaterealpageno#1#2{\clf_setpagestaterealpageno{#1}{#2}}
\permanent\def\pagestaterealpageorder#1#2{\clf_pagestaterealpageorder{#1}#2\relax}
\permanent\def\autopagestaterealpage #1{\clf_pagestaterealpage {#1}{\number\autopagestatenumber{#1}}}
\permanent\def\setautopagestaterealpageno#1{\clf_setpagestaterealpageno{#1}{\number\autopagestatenumber{#1}}}
\permanent\def\autopagestaterealpageorder#1{\clf_pagestaterealpageorder{#1}\numexpr\autopagestatenumber{#1}\relax}
\protect
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