Allan - I've tried this but after selecting all I get the following (see below), so the question then was how to identify any files in the project that require versioning and arranging for them to be added prior to the commit.  I'm still interested in a combining feature that allows me to both ADD and COMMIT in one hit however (like I had on Windows with Tortoise) 

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svn: Commit failed (details follow): 
svn: '/Users/greg/source/topdonator/doc/testonly.rb' is not under version control