tom and (dick or harry or john)
I'll assume you want to match a string containing "tom" and one (or more) of "dick","harry" or "john" in any order.

This can't be done easily in one regular expression, but you can use two (or more): 

/tom/ && /dick|harry|john/;

[download]
or 
/tom/ && ( /dick/ || /harry/ || /john/ );

[download]
Note that && and || are perl operators, which don't have a corresponding meaning inside a regex. (You can use | in a regex, but there is no & operator, because regexes already match the whole expression by default)

"What should it profit a man, if he should win a flame war, yet lose his cool?"

In reply to Re: Pattern matching by Joost
in thread Pattern matching by bedanta

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