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+
+%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.
+
+\registerctxluafile{typo-chr}{1.001}
+
+\definesystemattribute[marked][public]
+
+\unexpanded\def\removepunctuation
+  {\clf_pickuppunctuation action{remove}\relax} % the first experiment
+
+\unexpanded\def\pushpunctuation
+  {\clf_pickuppunctuation action{push}\relax} % the first experiment
+
+\unexpanded\def\poppunctuation
+  {\clf_pickuppunctuation action{pop}\relax} % the first experiment
+
+\unexpanded\def\markcontent
+  {\dosingleempty\typo_marked_mark}
+
+\def\typo_marked_mark[#1]#2%
+  {\dontleavehmode
+   \bgroup
+   \clf_markcontent{#1}%
+   \bgroup
+   #2% double grouping makes aftergroups work ok
+   \egroup
+   \egroup}
+
+\unexpanded\def\startmarkedcontent
+  {\dontleavehmode
+   \bgroup
+   \dosingleempty\typo_marked_start}
+
+\def\typo_marked_start[#1]%
+  {\clf_markcontent{#1}%
+   % double grouping makes aftergroups work ok
+   \bgroup}
+
+\unexpanded\def\stopmarkedcontent
+  {\egroup
+   \egroup}
+
+\unexpanded\def\removemarkedcontent
+  {\dosingleempty\typo_marked_remove}
+
+\def\typo_marked_remove[#1]%
+  {\clf_pickupmarkedcontent action{remove}mark{#1}\relax}
+
+\protect \endinput