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gerd authored
Added replace_matched_substring function. Changed the structure of 'variable'. 'sref' is either an arbitrary string, or it is the input string of the matching function. 'from' and 'len' are always used. git-svn-id: https://godirepo.camlcity.org/svn/lib-xstr/trunk@3 e4cd5726-45db-0310-8eb3-84e3bb775810
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