$stuff =~ /\x7F/

[download]

or 

index($stuff, "\x7F") >= 0

[download]

I think the latter is faster.

These are better than checking the unpacked string because they won't match 07 folled by F3.

In reply to Re: Way to grep binary scalar without unpacking by ikegami
in thread Way to grep binary scalar without unpacking by Eradicatore

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