[ http://jira.codehaus.org/browse/MJAR-1?page=all ]
Maria Odea Ching moved MNG-1558 to MJAR-1:
------------------------------------------
Version: (was: 2.0)
Fix Version: (was: 2.0.1)
Component: (was: maven-jar-plugin)
Workflow: jira (was: Maven)
Key: MJAR-1 (was: MNG-1558)
Project: Maven 2.x Jar Plugin (was: Maven 2)
> Manifest generation problems caused by valid POM information
> ------------------------------------------------------------
>
> Key: MJAR-1
> URL: http://jira.codehaus.org/browse/MJAR-1
> Project: Maven 2.x Jar Plugin
> Type: Bug
> Reporter: Bob Allison
> Assignee: John Casey
> Attachments: MNG-1558-plexus-archiver.patch
>
>
> It looks like we have some problems with the contents of manifests in jar
> files.
> According to Sun's documentation
> (http://java.sun.com/j2se/1.5.0/docs/guide/jar/jar.html), there are three
> basic formatting rules which are not always being enforced:
> 1) All text must be UTF-8
> 2) Lines are limited to 72 characters; longer lines must be continued
> 3) Sections are divided by blank lines
> Where are these rules being violated? The first rule can be violated by any
> POM which is in a character set other than UTF-8. The last two rules can be
> violated by any POM value which spans multiple lines. Both of these are
> potential problems since a number of POM values go directly into the manifest
> without sufficient checking.
>
>
> Example:
> The plugin I have been working on suddenly stopped working. It stopped when
> I added a two-line description to the POM. I have been able to determine
> that converting the second line of the description into a proper manifest
> continuation line fixed the problem. As it turns out, the class loader was
> ignoring the jar; this created an error where the name of the Mojo class was
> found but the class could not be loaded.
> Workarounds for the present:
> -- Any POM fields which end up in a jar manifest needs to be limited to
> UTF-8 characters.
> -- Multi-line values should be constructed so that all lines start with a
> space character (not strictly required for the first line but it doesn't
> hurt).
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