Flip that coin. It's not a question of searching for "jackhammer." It's a matter of what *jack* elements could be present in the data (whose contents are, at least possibly, unknown at the time you start writing the code)... as, for example, jackson (mississippi) or jackson hole, colorado.

But note: my reply is directed, not to you, but to the parent of your node... and, thus, casts no aspersions on your prior remark; in fact, it appears to say pretty much the same thing, but you said it first

In reply to Re^4: get n lines before or after a pattern by ww
in thread get n lines before or after a pattern by darklord_999

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