I appreciate your liking my REx, but be careful; that \s* is a `*' for a reason. Try yours out:
[~] $ perl -wnle'/^((?:\S+\s+){1,30})/;print $1'
one two three four five six seven
one two three four five six
versus mine:
[~] $ perl -wnle'/^((?:\S+\s*){1,30})/;print $1'
one two three four five six seven
one two three four five six seven
Also, your split solution has a minor problem:
[~] $ perl -wnle'@w=split/\s+/,$_,31;pop@w;print join " ",@w'
one two three four five
one two three four
(Granted, the problem specs weren't that great, but it seems reasonable to assume that if we have a line with less than 30 words, we don't want to throw away the last.)
-dlc
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