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This is a very minor issue: - Copy an existing erb file like index.html.erb - and paste it into the the same directory - its new name will be index.html_1.erb - because the "html" is significant to rails you should not change this part of the name. "html_1" is not a valid format. Instead the new name should be something like index_1.html.erb People are bound to change the name to something else anyway, so I do not really know if this is a real issue.
Right, will try to fix for 6.1. I guess this is more like a P4 though since, as you said, people will usually rename the copied file anyway.