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https://issues.apache.org/jira/browse/TRINIDAD-2170?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13163955#comment-13163955
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Mark Yvanovich commented on TRINIDAD-2170:
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As it turns out, the -moz-placeholder was implemented as a pseudo class, not a
pseudo element. Not sure which JIRA needs to be update to reflect this.
> There is no way to specify a real pseudo element in a skin css.
> ---------------------------------------------------------------
>
> Key: TRINIDAD-2170
> URL: https://issues.apache.org/jira/browse/TRINIDAD-2170
> Project: MyFaces Trinidad
> Issue Type: Bug
> Components: Skinning
> Affects Versions: 2.0.0-core
> Environment: any
> Reporter: Mark Yvanovich
> Original Estimate: 72h
> Remaining Estimate: 72h
>
> If you need a real css pseudo element rendered to the generated css, there is
> currently no way to do this. The :: sequence will always be replaced with a
> _. For example, to be able to skin the placeholder text in FF, you would
> specify:
> af|inputText::content::-moz-placeholder {}
> The generated selector needs to be:
> af_inputText_content::-moz-placeholder {}
> Currently, the generated CSS will output:
> af_inputText_content_-moz-placeholder {}
> One solution would be to have a whilelist of pseudo elements that we should
> render as is rather than replace the '::' with a '_'.
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