Jan Tepke created LOG4J2-466:
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             Summary: Wrong path decoding if path consists of '+'
                 Key: LOG4J2-466
                 URL: https://issues.apache.org/jira/browse/LOG4J2-466
             Project: Log4j 2
          Issue Type: Bug
          Components: Core
    Affects Versions: 2.0-beta9
         Environment: Mac Pro 
            Reporter: Jan Tepke
            Priority: Trivial


Hello,

I was trying to programmatically load a XML config file from the temporary data 
directory of a MacOS X system. The temp path consists of serveral '+' 
characters like MacOS automatically generates this path so we have to take it 
this way. Even I would agree that it is not nice to have '+' chars in a path 
name.

When I tried to load the XML config the framework permanently loaded the 
DefaultConfig and not the desired XML configuration.
By stepping through the debugger I figured out that this was caused by the 
method fileFromURI() in org.apache.logging.log4j.core.helpers.FileUtils.java .
The misbehaviour was basically caused by the call of URL.decode() which 
converts '+' to ' ' (space) of a given String. 
Now I self-compiled the whole framework without the call of URL.decode() and 
the XML configuration loaded properly. 
I can not see why this call is necessary in this method so in my opinion this 
should be removed.


Kind regards



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