[log4perl-devel] Docs/Test cases for message_filter

[<msc...@ao...>]

Hey Kevin,

just finished a couple of changes:

* added Log::Log4perl::Appender::TestArrayBuffer as a test appender capable of handling array refs.

* added test cases in 015fltmsg.t (for some strange reason 015 was still available :).

* looks like we can't use "sub {...}" as the syntax for filter_message coderefs because it's taken by the perl hooks already which are executed at config time. filter_message, on the other hand, needs to run at log time. For now, I've changed the code to expect a function *name* instead of a code ref -- see the latest addition to the Log::Log4perl::Appender docs ... thoughts?

* While I wrote the test cases, I felt regrets that we don't have a generic interface (other than in the DBI appender) to run PatternLayout substitutions on multiple-argument appender calls. Like $log->debug("%d", "%m") -- could we do that somehow? Brain storming ideas? :)

-- 
-- Mike

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