So I was just working on making a libdir loader which uses the new [declare] functionality and I noticed that [declare] doesn't seem to handle the helppath stuff at all. That means that you'll get an unknown help patch if you are using the [declare] local paths. The help path would be then global, but the path for finding objects would be local to the patch, and could be quite different. Therefore, the help patch would mostly likely be for the wrong object with a given name.
The helppath will need to be local to the patch as well. One option is to make the helppath use the ce_path, and use the libdir format, which includes the *.pd_darwin and *-help.pd in the same folder.
.hc
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If nature has made any one thing less susceptible than all others of exclusive property, it is the action of the thinking power called an idea, which an individual may exclusively possess as long as he keeps it to himself; but the moment it is divulged, it forces itself into the possession of everyone, and the receiver cannot dispossess himself of it. - Thomas Jefferson