".index" file shows in repository, but not in Project Explorer. Is there a setting or property needed?
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The easiest way is to use the Navigator view, which serves slightly different purpose to the Project Explorer view.
The Navigator view provides a hierarchical view of the resources in the Workbench including hidden files.http://help.eclipse.org/luna/index.jsp?topic=%2Forg.eclipse.cdt.doc.user%2Freference%2Fcdt_u_navigator_view.htm
This (Project Explorer) view provides a hierarchical view of the artifacts in the Workbench, which is customized by the specific configuration of your Workbench.http://help.eclipse.org/luna/index.jsp?topic=%2Forg.eclipse.platform.doc.user%2Freference%2Fref-27.htm