id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
2750,regex backwar looking assertion,anonymous,John Maddock,"The perl expression (?<=.{3,3}).{6,6} passed in to boost regex results in   Unmatched [ or [^ 

?<= signifies a backward looking positive assertion so a pattern match should be returning 6 characters starting at offset 4
 
This works fine in perl. Any idea what part of the pattern is causing the issue?

thanks

Mark
",Bugs,closed,To Be Determined,regex,Boost 1.36.0,Problem,worksforme,,