[whatwg] NULL characters in manifests

Alexey Proskuryakov ap at webkit.org
Fri Mar 21 13:49:07 PDT 2008

> The user agent must decode the bytestream corresponding with the  
> manifest to be parsed, treating it as UTF-8. Bytes or sequences of  
> bytes that are not valid UTF-8 sequences must be interpreted as a U 
> +FFFD REPLACEMENT CHARACTER. All U+0000 NULL characters must be  

   The requirement to replace NULL characters with U+FFFD appears to  
be non-verifiable, as the effect of preserving NULLs is the same (an  
URL is treated as invalid).

   I think it would be better to omit this requirement, as it is just  
a disguised and somewhat misguiding warning about the perils of NULLs  
in strings (usually in C-style strings). At least for WebKit, I expect  
that it would be safer and easier to avoid such problems without  
introducing a new decoder mode just for manifests.

- WBR, Alexey Proskuryakov

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