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https://issues.apache.org/jira/browse/MYFACES-1896?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Simon-Pierre Béliveau updated MYFACES-1896:
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    Status: Patch Available  (was: Open)

> FacesConfigurator version check incorrect
> -----------------------------------------
>
>                 Key: MYFACES-1896
>                 URL: https://issues.apache.org/jira/browse/MYFACES-1896
>             Project: MyFaces Core
>          Issue Type: Bug
>    Affects Versions: 1.2.2
>            Reporter: Hilbert Schraal
>         Attachments: MYFACES-1896.patch
>
>
> The FacesConfigurator does some checks on whether there are multiple versions 
> of Tomahawk and MyFaces in the classpath. This check is incorrect, in the 
> sense that it can, and will, log incorrect error messages.
> This problem occurs when using the jar from the tomahawk-facelets project 
> (http://code.google.com/p/tomahawk-facelets), of which I'm one of the 
> maintainers. The current release is called tomahawk-facelets-1.1.6.2.jar, 
> which gives the following error:
> ERROR FacesConfigurator?:404 - You are using the MyFaces?-package : tomahawk 
> in different versions; first (and probably used) version is : 1.1.6, 
> currently encountered version is : facelets-taglib. This will cause undesired 
> behaviour. Please clean out your class-path. The first encountered version is 
> loaded from : 
> file:/G:/Development/IdeaProjects/blokart/out/exploded/blokartWeb/WEB-INF/lib/tomahawk-1.1.6.jar.
>  The currently encountered version is loaded from : 
> jar:file:/G:/Development/IdeaProjects/blokart/out/exploded/blokartWeb/WEB-INF/lib/tomahawk-facelets-taglib.jar!/META-INF/MANIFEST.MF
> However, this jar just contains taglibs and some supporting class files. So 
> the error is logged without a valid reason.
> I've looked at the code in the FacesConfigurator and have seen that the 
> checks can be improved, e.g. using the following regular expression for 
> getting the version number of Tomahawk: tomahawk-(\d\.\d\.\d)

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