Never one to pass up a challenge... 
/^[^,]*(?:,\s*[^\s,][^,]*)*$/

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Jeff japhy Pinyan, P.L., P.M., P.O.D, X.S.: Perl, regex, and perl hacker
Nos autem praedicamus Christum crucifixum (1 Cor. 1:23) - The Cross Reference (My Blog)

In reply to Re: RegEx question by japhy
in thread RegEx question by mohamedrabeek

Title:
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and:  <code> code here </code>
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