%D \module
%D   [       file=hand-ini,
%D        version=2008.02.12,
%D          title=\CONTEXT\ Handling Macros,
%D       subtitle=Initialization,
%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.

%D Handling is implemented differently in \MKIV. Maybe I'll cook up
%D some compatibility hack.

% \definefontfeature[demo][default][mode=node,expansion=quality]
% \definefontfeature[demo][default][mode=node,protrusion=pure]

% experimental setup:
%
%  \showframe \setupalign[hanging] \enabletrackers[fonts.protrusion]
%
%  \definefontfeature[default] [default][mode=node,script=latn]
%  %definefontfeature[whatever][default][mode=node,lfbd=yes,rtbd=yes,script=latn]
%  \definefontfeature[whatever][default][mode=node,protrusion=quality]
%  \definefontfeature[whocares][default][mode=node,protrusion=yes,opbd=yes,script=latn] % left|right|yes
%
%  \definedfont[fxlbi.otf*default]  \input tufte 0123456789 \par \dorecurse{15}{1 2 3 4 5 6 7 8 9 0 } \par
%  \definedfont[fxlbi.otf*whatever] \input tufte 0123456789 \par \dorecurse{15}{1 2 3 4 5 6 7 8 9 0 } \par
%  \definedfont[fxlbi.otf*whocares] \input tufte 0123456789 \par \dorecurse{15}{1 2 3 4 5 6 7 8 9 0 } \par
%
%  %definefontfeature[whocares][default][mode=node,protrusion=2,opbd=yes,script=latn,featurefile=texgyrepagella-regularxx.fea]
%  \definefontfeature[whocares][default][mode=node,protrusion=2,opbd=yes,script=latn]
%
%  \definedfont[texgyrepagella-regularxx.otf*whocares] \input tufte

\unprotect

%D New stuff.

\unexpanded\def\setupfontexpansion {\dodoubleargument\dosetupfontexpansion }
\unexpanded\def\setupfontprotrusion{\dodoubleargument\dosetupfontprotrusion}

\def\dosetupfontexpansion [#1][#2]{\ctxlua{commands.setupfontexpansion ("#1","#2")}}
\def\dosetupfontprotrusion[#1][#2]{\ctxlua{commands.setupfontprotrusion("#1","#2")}}

% \setupfontprotrusion[quality-upright][vector=quality]
% \setupfontprotrusion[quality-slanted][vector=quality,right=1.5]

%D Old stuff.

\def\fonthandlingerror{\writestatus\m!fonts{font handling is replaced by features in mkiv}}

\def\enableadjusting  {\pdfadjustspacing\plustwo  }  \let\enableexpansion \enableadjusting
\def\disableadjusting {\pdfadjustspacing\zerocount}  \let\disableexpansion\disableadjusting
\def\enableprotruding {\pdfprotrudechars\plustwo  }
\def\disableprotruding{\pdfprotrudechars\zerocount}

\appendtoks \disableadjusting  \to \everyforgetall % Here or not here?
\appendtoks \disableprotruding \to \everyforgetall % Here or not here?

\unexpanded\def\startfonthandling             #1{\fonthandlingerror\fonthandlingerror\gobbleuntil\stopfonthandling} % can't happen
\unexpanded\def\definefonthandling              {\dotripleempty\dodefinefonthandling}
\unexpanded\def\setupfonthandling               {\dodoubleempty\dosetupfonthandling }
\def\dodefinefonthandling[#1][#2][#3]{\fonthandlingerror}
\def\dosetupfonthandling     [#1][#2]{\fonthandlingerror}
\def\usehandling                 [#1]{\fonthandlingerror}

%D Just to be sure, maybe users use it:

\let\fonthandling\empty

\protect \endinput