File matches multiple parts of an autocommand pattern

Is this the expected behavior?  If an autocommand pattern contains several parts, and a file matches more than one of them, then the autocommand is executed more than once.  For example, if I add this to my vimrc file

let foo_count = 0

augroup Foo

au Bufread,BufEnter *foo*,*bar* let foo_count += 1

augroup END

and edit foobar.txt, then foo_count is set to 2.

-- 

Benji Fisher

(I apologize for poor formatting.  I am using the web interface to Gmail.)

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