<outputFileNameMapping> needs to report collision.
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Key: MASSEMBLY-217
URL: http://jira.codehaus.org/browse/MASSEMBLY-217
Project: Maven 2.x Assembly Plugin
Issue Type: Bug
Affects Versions: 2.2-beta-1
Reporter: Kohsuke Kawaguchi
If <outputFileNameMapping> maps two or more artifacts into the same name, it
needs to be reported as an error.
Maven currently just takes the last one without reporting anything, and as a
result I didn't notice that my assembly descriptor had a problem until I debug
the plugin source code.
This problem is particularly made worse by a broken jar-with-dependencies
example in [the
documentation|http://maven.apache.org/plugins/maven-assembly-plugin/descriptor-refs.html],
which says:
{noformat}
<dependencySets>
<dependencySet>
<outputDirectory></outputDirectory>
<outputFileNameMapping></outputFileNameMapping>
<unpack>true</unpack>
<scope>runtime</scope>
</dependencySet>
</dependencySets>
{noformat}
... which maps every dependency to ""
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