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https://issues.apache.org/jira/browse/WW-4188?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14201874#comment-14201874
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Rene Gielen commented on WW-4188:
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[~cn42] There might be issues, yes - but this actually CSS2, not even CSS3. We 
should really think of not staying backwards compatible to ancient browsers at 
all costs. Additionally, users would be able to override the default template 
with the theme mechanism if they feel they need to support IE6 or similar 
zombies...

> In struts tag lib, required attribute removed in latest version ie 2.3.15.1
> ---------------------------------------------------------------------------
>
>                 Key: WW-4188
>                 URL: https://issues.apache.org/jira/browse/WW-4188
>             Project: Struts 2
>          Issue Type: Bug
>          Components: Other
>    Affects Versions: 2.3.15.1
>         Environment: All
>            Reporter: mahendran
>            Assignee: Lukasz Lenart
>              Labels: struts-tags-required-attribute
>             Fix For: 2.5
>
>
> we are using struts 2.0.5 and 2.3.4.1 in our applications. And we decided to 
> migrate to 2.3.15.1 to get the security fixes.
> we use struts tags to render UI components and using 'required' attribute to 
> get the '*' along with the components.
> In the version 2.3.15.1, the attribute required is dropped, and we need to 
> change to requiredLabel to get the same effect, this increases 
> migration&testing effort for a application which has 1000+pages
> Hence we require a backward compatibility for 'required' attribute in struts 
> tags.
> Also nowhere in the migration document this information is specified. This 
> makes the struts migration as block-box. Hence we require a proper migration 
> document which should specify what are all the changes required in the 
> application to migrate the struts.
> But we managed to get the '*' in UI by replacing 
> UIBean.class,AbsctactUITag.class and struts.tld from 2.3.4.1 version.



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