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%D \module
%D [ file=typo-brk,
%D version=2009.03.27, % code moved from core-spa.mkiv
%D title=\CONTEXT\ Typesetting Macros,
%D subtitle=Breakpoints,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright=\PRAGMA]
%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 Typesetting Macros / Breakpoints}
\unprotect
\registerctxluafile{typo-brk}{1.001}
\definesystemattribute[breakpoint]
% compound stuff (under construction)
\newbox\breakpointbox
\definesystemvariable {bp} % BreakPoint
\exhyphenchar=\minusone % we use a different order then base tex, so we really need this
\newcount \maxbreakpointsid
\def\definebreakpoints
{\dosingleargument\dodefinebreakpoints}
\def\dodefinebreakpoints[#1]%
{\ifcsname\??bp:#1\endcsname \else
\global\advance\maxbreakpointsid\plusone
\setxvalue{\??bp:#1}{\the\maxbreakpointsid}%
\fi}
\def\installbreakpoint
{\dotripleempty\doinstallbreakpoint}
% hm, we cannot prebuild lists, font dependent
\def\doinstallbreakpoint[#1][#2][#3]%
{\ifcsname\??bp:#1\endcsname
\begingroup
\getparameters[\??bp][\c!type=1,\c!nleft=3,\c!nright=3,\s!language=,#3]%
\ctxlua{breakpoints.setreplacement(\csname\??bp:#1\endcsname,#2,\@@bptype,\@@bpnleft,\@@bpnright,"\@@bplanguage")}%
\endgroup
\fi}
\def\setbreakpoints
{\ctxlua{breakpoints.enabled=true}%
\gdef\setbreakpoints[##1]{\dosetattribute{breakpoint}{\csname\??bp:##1\endcsname}}%
\setbreakpoints}
\letvalue{\??bp:\s!reset}\attributeunsetvalue
\definebreakpoints[compound]
\installbreakpoint [compound] [\number`+] [\c!left=3,\c!right=3,\c!type=1]
\installbreakpoint [compound] [\number`-] [\c!left=3,\c!right=3,\c!type=1]
\installbreakpoint [compound] [\number`/] [\c!left=3,\c!right=3,\c!type=1]
\installbreakpoint [compound] [\number`(] [\c!left=3,\c!right=3,\c!type=2]
\installbreakpoint [compound] [\number`)] [\c!left=3,\c!right=3,\c!type=3]
% \mainlanguage[czech]
% \installbreakpoint [compound] [\number`-] [language=cs,left=3,right=3,type=4]
% \setbreakpoints[compound]
% \start \hsize 1mm test-test \par \stop
% \setbreakpoints[compound]
\protect \endinput
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