Hello List, I'm trying to match a User-Name attribute against a regex in the hints file. I'm now stumbling over a regex which does not work as expected. It looks like this: DEFAULT User-Name =~ "(.*\.de\.de$)" Hint := "Blacklist" It is aimed to match User-Names like "x@whatever.de.de". To my astonishment, it also matches usernames like "x@ende.de" (note the missing dot). I'm unsing a self-compiled freeradius from git-sources: FreeRADIUS Version 2.1.12, for host i686-pc-linux-gnu Looking at the config.log, I assume that the local posix regex functions are used: $ grep regex config.log configure:23003: checking regex.h usability configure:23044: checking regex.h presence configure:23107: checking for regex.h ac_cv_header_regex_h=yes From my observations, it seems that backslashes are removed from the regex string before the regex gets compiled, but I might be wrong. Am I missing something or is this a (known) bug?