K 10 svn:author V 3 hrs K 8 svn:date V 27 2008-11-09T01:10:21.187579Z K 7 svn:log V 262 Add workaround for a back reference when no corresponding parenthesized subexpression is defined. For example, the following command line caused unexpected behavior like segmentation fault: % echo test | sed -e 's/test/\1/' PR: bin/126682 MFC after: 1 week END