%D \module
%D   [       file=typo-chr,
%D        version=2015.01.01, % or about that time
%D          title=\CONTEXT\ Typesetting Macros,
%D       subtitle=Cleaning Up Mess,
%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 Typesetting Macros / Characters}

\unprotect

%D This is a very experimental feature, mostly for Alan and me to play with in
%D publication hell.
%D
%D \startbuffer
%D before, after\par
%D before,\removepunctuation after\par
%D before\markcontent[gone]{\darkred   gone}\removemarkedcontent[gone]after\par
%D before\markcontent[kept]{\darkgreen kept}\removemarkedcontent[gone]after\par
%D \markcontent[gone]{\darkred   gone}\removemarkedcontent[gone]after\par
%D \markcontent[kept]{\darkgreen kept}\removemarkedcontent[gone]after\par
%D \stopbuffer
%D
%D \typebuffer \blank \getbuffer\blank
%D
%D This feature is paragraph based and is only to be used for small snippets of text,
%D for instance when combining bit and pieces where keeping a state is complex compared
%D to cleaning up unwanted stuff.

\newinteger\c_syst_last_node_id

\registerctxluafile{typo-chr}{autosuffix}

\definesystemattribute[marked][public]

\permanent\protected\def\removepunctuation{\clf_pickuppunctuation action{remove}\relax}
\permanent\protected\def\pushpunctuation  {\clf_pickuppunctuation action{push}\relax}
\permanent\protected\def\poppunctuation   {\clf_pickuppunctuation action{pop}\relax}

\permanent\tolerant\protected\def\markcontent[#1]#:#2%
  {\dontleavehmode
   \bgroup
   \clf_markcontent{#1}%
   \bgroup
   #2% double grouping makes aftergroups work ok
   \egroup
   \egroup}

\permanent\tolerant\protected\def\startmarkedcontent[#1]%
  {\dontleavehmode
   \bgroup
   \clf_markcontent{#1}%
   % double grouping makes aftergroups work ok
   \bgroup}

\permanent\protected\def\stopmarkedcontent
  {\egroup
   \egroup}

\permanent\tolerant\protected\def\removemarkedcontent[#1]%
  {\clf_pickupmarkedcontent action{remove}mark{#1}\relax}

\permanent\protected\def\doifelsemarkedcontent#1%
  {\clf_doifelsemarkedcontent{#1}}

%D A few helpers (put here for convenience):
%D
%D \starttyping
%D test test\doifelselastnode{boundary}{word}{YES}{NOP}test
%D test test\wordboundary \doifelselastnode{boundary}{word}{YES}{NOP}test
%D test test\wordboundary \doifelseatwordboundary{YES}{NOP}test
%D test test \lastnodeidstring test
%D test test\lastnodeidstring test
%D test test\number\lastnodeid test
%D \stoptyping

\permanent\protected\def\doifelselastnode      {\clf_lastnodeequals}                 % can be public implementors
\permanent\protected\def\doifelseatwordboundary{\clf_atwordboundary}                 % can be public implementors
\permanent\protected\def\lastnodeid            {\clf_lastnodeid\c_syst_last_node_id} % can be public implementors

\protect \endinput

