I'm writing a command to open tmproj files and I've narrowed it to opening a folder from the project, and opening the files that were open when the project was saved.  Anything else is too messy to transform into the Avian equivalent.  I do have a couple questions before I will be able to complete it: 

How to manipulate the file browser from a (Ruby) command?

How to open a file from a (Ruby) command?

Also, a couple general purpose questions:

How to run a bundle from another bundle (if possible)?

How to output to both document and web preview with a command (if possible)?

Bugs:

Found a bug in the File Browser: Renaming a favorite to the same filename with a changed case (e.g. myfavorite -> MyFavoRite) causes "Failed to rename the file at “MyFavoRite. Error: File exists" 

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The new Ruby support scripts look fantastic.  I see some cool bundles in TextMate's future.

Brandon