Filter::StringMatch(3) User Contributed Perl Documentation NAME Log::Log4perl::Filter::StringMatch - Filter on log message string SYNOPSIS log4perl.filter.Match1 = Log::Log4perl::Filter::StringMatch log4perl.filter.Match1.StringToMatch = blah blah log4perl.filter.Match1.AcceptOnMatch = true DESCRIPTION This Log4perl custom filter checks if the currently submitted message matches a predefined regular expression, as set in the "StringToMatch" parameter. It uses common Perl 5 regexes. The additional parameter "AcceptOnMatch" defines if the filter is supposed to pass or block the message on a match ("true" or "false"). SEE ALSO Log::Log4perl::Filter, Log::Log4perl::Filter::Boolean, Log::Log4perl::Filter::LevelMatch, Log::Log4perl::Filter::LevelRange, Log::Log4perl::Filter::MDC LICENSE Copyright 2002-2026 by Mike Schilli and Kevin Goess . This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.42.2 2026-08-14 Filter::StringMatch(3)