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Re: Possible bad punycode slipping through
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From: |
Simon Josefsson |
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Subject: |
Re: Possible bad punycode slipping through |
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Date: |
Thu, 10 Dec 2015 15:51:15 +0100 |
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User-agent: |
Gnus/5.130014 (Ma Gnus v0.14) Emacs/24.4 (gnu/linux) |
Bob Aman <address@hidden> writes:
> I believe this is an invalid punycode encoding and should be raising an
> error. Instead, I'm seeing the identity value without an error when trying
> to convert to unicode.
>
> http://xn--zckp1cyg1.sblo.jp/
>
> I believe it's that last character in the sequence that's invalid.
>
> This is in 1.32 on OS X, installed via homebrew.
ToUnicode never raises errors. On internal failures, the original
string is returned. RFC 3490:
ToUnicode never fails. If any step fails, then the original input
sequence is returned immediately in that step.
/Simon
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