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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 50039] Request: single character form of priority in PatternLayout
Date Sun, 03 Oct 2010 16:56:17 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=50039

--- Comment #5 from Scott Deboy <sdeboy@iname.com> 2010-10-03 12:56:14 EDT ---
I'm fine with maintaining compatibility, but honestly, FormattingInfo seems
useless to end users (it happens to be public but doesn't have to be, and it is
final).

If there ever is a log4j 2.0, I would suggest we make explicit statements of
support for compatibility moving forward - specifically, I think we need to
define interfaces for anything we expect end users to want to extend and we
maintain those interface contracts, and everything else is implementation and
users should have no expectation of implementation classes going forward, even
if they are public.

log4j has been mired in its current state in large part (IMO) because of
resistance to modify the api due to concerns over backward compatibility.  Its
definitely a dis-incentive to participation if everything that is a public
class can only have additions made and never have things removed or changed.

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