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I'd love to see features similar to this as well. We could even use the subbuffer as a run result (instead of another tab), viewing details/values of an object.. etc.  It just have to be a "tab" that opens inline, and the possibility is endless.

Has there been a resolution on this issue?  This had been a problem for https://github.com/uipoet/sublime-jshint/issues/21, and we had to scope the PATH option just for Mac for the plugin to work.