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Re^3: Confusing syntax error with grep

by gumpu (Friar)
on Aug 12, 2004 at 16:07 UTC ( #382329=note: print w/replies, xml ) Need Help??


in reply to Re^2: Confusing syntax error with grep
in thread Confusing syntax error with grep

Nope he is correct, it was a problem with 'and' having lower precedence than ','

grep ( ( expression) and ( expression) and ( expression ) , @files )

Is interpreted as

grep ( ( expression) and ( expression) and ( ( expression ) , @files ) + )

According to perldoc -f grep, the construct grep( expression, list ) is allowed. But it is indeed confusing to man and machine!.

Have Fun

Replies are listed 'Best First'.
Re^4: Confusing syntax error with grep
by ikegami (Patriarch) on Aug 12, 2004 at 16:16 UTC

    The post to which I replied said ... and ( expression , @files ), not ... and ( expression ) , @files as you used, so my reply *does* apply to the post to which I replied.

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