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-%D \module
-%D [ file=syst-str,
-%D version=2006.09.18,
-%D title=\CONTEXT\ System Macros,
-%D subtitle=String Processing,
-%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.
-
-\unprotect
-
-% nb: these macros might go away !
-%
-% todo: escape special chars in expr (\luaescapeexpression)
-
-%D I got tired of making dedicated clean up macros using the
-%D same mechanism again and again, so now we have:
-%D
-%D \starttyping
-%D \def\xxxx{abc.d} \replacecharacters\xxxx{a.}{-} \xxxx
-%D \stoptyping
-
-\def\replacecharacters#1#2#3% macro characters replacement
- {\dodoglobal\edef#1{\ctxlua{tex.sprint((string.gsub(\!!bs#1\!!es,\!!bs#2\!!es,"#3")))}}}
-
-\def\separatestring#1\to#2%
- {\dodoglobal\def#2{\ctxlua{tex.sprint((string.gsub(\!!bs#1\!!es,"\letterpercent s+",",")))}}}
-
-\def\unspacefilename#1\to#2%
- {\dodoglobal\def#2{\ctxlua{tex.sprint((string.gsub(\!!bs#1\!!es,"\letterpercent s+","-")))}}}
-
-\protect \endinput