%D \module
%D   [       file=core-ini,
%D        version=2003.12.01,
%D          title=\CONTEXT\ Core Macros,
%D       subtitle=Additional Initialization,
%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 / Additional Initialization}

\unprotect

%D We introduce a couple of variables that are used all over \CONTEXT. Alternatively
%D we could define them in each module but as they are part of the bigger picture we
%D prefer to do it here. Ideally we should hav ea proper dependency tree but it might
%D be that we want to make versions with a smaller footprints in which case one would
%D still need to define the token list registers (unless we could do that runtime).

%D \macros
%D   {every...}
%D
%D A few every's.

%D Output routine:

\newtoks \everybeforeoutput
\newtoks \everyafteroutput

%D Shipout:

\newtoks \everyshipout
\newtoks \everybeforeshipout
\newtoks \everyaftershipout
\newtoks \everyfirstshipout
\newtoks \everylastshipout

%D End of run:

\newtoks \everybye
\newtoks \everygoodbye
\newtoks \everynotabene

%D Document:

\newtoks \everyendoftextbody

\newtoks \everystarttext
\newtoks \everystoptext

\newtoks \everystartdocument
\newtoks \everystopdocument

%D Purity:

\newtoks \everyforgetall
\newtoks \everycleanupfeatures
\newtoks \everysimplifycommands
\newtoks \everypreroll

\let\simplifiedcommands\everysimplifycommands % backward compatible, will stay as it's used in styles

\newconditional\simplifyingcommands % public

\unexpanded\def\forgetall       {\the\everyforgetall}
\unexpanded\def\cleanupfeatures {\the\everycleanupfeatures}
\unexpanded\def\simplifycommands{\the\everysimplifycommands}

\appendtoks
    \settrue\simplifyingcommands
\to \everysimplifycommands

\appendtoks
    \everypar\emptytoks % pretty important
\to \everyforgetall

%D Page building:

\newtoks \everybeforepagebody
\newtoks \everyafterpagebody

\let\everypagebody\everybeforepagebody % backward compatible, will become obsolete

%D Floats:

\newtoks \everyinsidefloat

%D Exporting:

\newtoks \everyinitializeexport

%D Sectioning:

%newtoks \everyheadstart

%D Par building (experimental, used in xml <p> .. </p>)

\newtoks \everybeginofpar
\newtoks \everyendofpar
%newtoks \everyparflush

\unexpanded\def\bpar{\the\everybeginofpar\ignorespaces}                  % may interfere with \everypar
\unexpanded\def\epar{\ifhmode\removeunwantedspaces\the\everyendofpar\fi} % test prevents problems with \bpar\epar

%D Lists:

\newtoks \everylistentry
\newtoks \everysavesortkeys

%D Marks:

%newtoks \everymarking

%D Fonts:

\newtoks \everyfont
\newtoks \everyglobalbodyfont
\newtoks \everydefinedfont

\newtoks \everybodyfont
\newtoks \everyfontswitch

\newtoks \everysetupbodyfont
\newtoks \everyswitchtobodyfont

%D Math:

\newtoks \everybeforedisplayformula
\newtoks \everymathematics

\prependtoks \the\everymathematics \to \everymath
\prependtoks \the\everymathematics \to \everydisplay

%D Tables:

%newtoks \everytable % we need to disstinguish kinds

%D State mess:

\newtoks \everypushsomestate
\newtoks \everypopsomestate

\unexpanded\def\pushsomestates{\the\everypushsomestate}
\unexpanded\def\popsomestates {\the\everypopsomestate }

%D More generic (used to be pushcolor etc)

\newtoks\everystarttextproperties
\newtoks\everystoptextproperties

\unexpanded\def\starttextproperties{\the\everystarttextproperties}
\unexpanded\def\stoptextproperties {\the\everystoptextproperties}

%D \macros
%D   {trialtypesetting}
%D
%D We disable trial typesetting in the output routine,
%D just to be sure.

\prependtoks
    \resettrialtypesetting
\to \everybeforepagebody

%D \macros
%D   {ifinpagebody,ifinsidecolumns,ifdoublesided,ifsinglesided}
%D
%D These will become system modes and conditionals

\newif \ifinpagebody
\newif \ifinsidecolumns
\newif \ifinsidemulticolumns  % simple mixed-in-text columns
\newif \ifdoublesided         \doublesidedfalse
\newif \ifsinglesided         \singlesidedtrue
\newif \ifinsidefloat
\newif \ifdoingblocks
\newif \ifgridsnapping
\newif \ifexporting

\newconstant\pageduplexmode % 0 single 1 double 2 mix
\newconstant\pagebodymode   % 0 not 1 normal pagebody 2 spread

\newcount\nofcolumns      \nofcolumns     \plusone
\newcount\nofmulticolumns \nofmulticolumns\plusone

%D \macros
%D   {ifproductionrun}
%D
%D This boolean can be used to bypass certain initializations.

% \newif\ifproductionrun % already defined

\appendtoks
    \productionruntrue
\to \everydump

%D \macros
%D   {everyboxedcontent, ifboxedcontent,
%D    startboxedcontent, stopboxedcontent}
%D
%D This one is relatively new and will be used as a more robust test for inner
%D situations.

\newif  \ifboxedcontent
\newtoks\everyboxedcontent

\appendtoks
    \boxedcontenttrue
\to \everyboxedcontent

\unexpanded\def\startboxedcontent{\bgroup\the\everyboxedcontent}

\let\stopboxedcontent\egroup

%D We store some original meanings, maybe in \type {math-ini}.

\let\normalat   \at
\let\normalin   \in
\let\normalfrom \from
%let\normalover \over
\let\normalabout\about

%D This will be implemented way later:

\let\setlayoutcomponentattribute  \gobbleoneargument
\let\resetlayoutcomponentattribute\relax
\let\layoutcomponentboxattribute  \empty

\protect \endinput