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•Re: nms - As Recommended By Matt Wright

by merlyn (Sage)
on May 21, 2002 at 07:45 UTC ( #168057=note: print w/replies, xml ) Need Help??


in reply to nms - As Recommended By Matt Wright

I don't know if you had to work to get that, but in any event, Congratulations! It's a true acknowledgement to you for setting up and managing the project, and a great concession by Matt Wright that his stuff could use replacing.

-- Randal L. Schwartz, Perl hacker

  • Comment on •Re: nms - As Recommended By Matt Wright

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[Corion]: hippo: If you have a Unicode-wise Perl then likely some zero-width characters in $x would work. Maybe $x = "\x{200b}" works.
[Corion]: Hmm - no, that outputs 1 for me on 5.14 - perl -wle "my $x = qq(\x{200b}); warn $x; warn length $x"
[hippo]: Smart - I'll give that a go. Thanks.
[hippo]: Ah
[Corion]: But maybe there is some other Unicode string that will be true but have a zero width
[hippo]: For explanation, I've seen this construct in someone else's code (no names, no pack drill) and couldn't think of a situation to trigger it.
[Corion]: You'll have to look somewhere esoteric for that. Maybe some tied variable or special dualvar can also trigger that. But it's certainly not a common occurrence
[Corion]: And on 5.20, the following also outputs no find:perl -wle 'for my $x ("\x{2000}".."\ x{1fffff}") { if( $x && ! length $x ) { warn qq(<$x>); warn length $x; die } }'
[Corion]: (this time on Unix)

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