Re: [log4perl-devel] Re: MDC and [undef]

[Kevin G. <ke...@go...>]

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| I see that MDC.pm has an undef value (which was recently '[undef]')
| but I don't see where it's changed to an empty string. By subclassing the
| place where undef values are changed to empty string, I could certainly
| get rid of my problem.

It's changed in the sprintf() in PatternLayout::render(), since this:

	sprintf("%s", undef)

produces the empty string, not undef.

| That's why it would be nice to provide a way for the users to do some
| kind of preprocessing on MDC values in order to handle problems which
| are specific to some kind of appenders.

Tell me if I'm just being dense (which is more than likely), but is it
not true that you *do* have complete control the MDC values, you can
init the troublesome one via MDC->put('somenumeric',0) right next to
where you call Log4perl::init(), or even in a BEGIN{} block somewhere.
Right?

What am I missing?  Do you have another suggestion?  I'm open to ideas....



- --
Happy Trails. . .

Kevin M. Goess
(and Anne and Frank)
904 Carmel Ave.
Albany, CA  94706
(510)525-5217
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