regex - Regular expression AND not matching correctly -


i want able search in set of documents on 2 words "country" , "vehicle"... want see documents have both words in them once document has both words, want hit on occurrences of either word.

i've tried 

(?=(country|vehicle))  (?= country )(?= vehicle) ( (country)* | (vehicle)*) | ( (country .* vehicle) ) (?=.*vehicle)(?=.*country)

i can't seem right, suggestions?

you need use single line option , anchor speed processing:

(?s)^(?=.*vehicle)(?=.*country)

if need match words whole words, use \b word boundary around them.

without singleline mode, words checking might not reached might located on second, third etc. lines , lookaheads fail.


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