GitHub user jdillon opened a pull request:
https://github.com/apache/maven/pull/81
Hook up gossip as slf4j backend and implement customized color renderer
Replaces slf4j-simple with gossip-slf4j ( https://github.com/jdillon/gossip
) and adds support for colorized output.

To enable colorized output:
```
MAVEN_OPTS="-Dmaven.logging=color" bin/mvn
```
or set in ~/.mavenrc
Presently has to be passed in via MAVEN_OPTS as there is no context to
access the -D flags early enough to configure the backend w/o more changes to
the Slf4jConfiguration api.
Default is presently plain, so users need to elect to use color explicitly
as described above.
Colorization is a subset of the color handling available in mvnsh, as this
can only colorize log events, so anything going directly to output streams
(like bits from surefire, etc) can not be colorized by this mechanism.
Left the assembly conf/logging/* bits alone, as its not clear if other
configurations are expecting this directory to exist or not, but likely should
be cleaned up.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/jdillon/maven gossip-slf4j-backend
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/maven/pull/81.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #81
----
commit bedba47f7ac1275502ae0ab1ec9e2c291921674f
Author: Jason Dillon <[email protected]>
Date: 2016-05-16T19:34:21Z
Hook up gossip as slf4j backend and implement customized color renderer
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