I need to automate parsing of a small (600 lines, 200KB) text log file.

No problem with simple regex's to remove unwanted text and lines, but what's tripping me up is partial re-ordering.   I want to move every line that contains blahblah to the top of the file, but the blahblah lines must still remain in their same sequence.

Is there a CPAN module for such things?   I dug around, but found no such beast.   I could sure use a nudge in the right direction, or even code examples.
    cheers,
    ybiC 

UNORDERED(before):
 foo  1  zot
 foo  2  blahblah
 bar  1  zot
 bar  2  zot
 bat  1  blahblah
 bat  2
 baz  1
 baz  2  zot

ORDERED(after):
 foo  2  blahblah
 bat  1  blahblah
 foo  1  zot
 bar  1  zot
 bar  2  zot
 bat  2
 baz  1
 baz  2  zot

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In reply to text sorting question, kinda by ybiC

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