Re: [Json] Leading and trailing whitespace

Carsten Bormann <cabo@tzi.org> Tue, 11 June 2013 08:56 UTC

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From: Carsten Bormann <cabo@tzi.org>
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Cc: Jim Schaad <ietf@augustcellars.com>, Paul Hoffman <paul.hoffman@vpnc.org>, json@ietf.org
Subject: Re: [Json] Leading and trailing whitespace
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>>>> JSON.parse("\r\n \t 27 \r\n \t", quirks_mode: true)
>> => 27
>> 
>> (quirks_mode is the flag that switches on the non-coforming acceptance of any "value".)
> 
> Right.  I suppose I meant "by default" :)

Without quirks mode, the Ruby JSON parser only accepts JSON-texts (i.e., maps and arrays), 
so I couldn't have tested how whitespace is accepted around top-level values.

>> So we will have to add a production:
>> 
>>        JSON-value = ws value ws
>> 
>> That didn't seem too hard.
> 
> Do we need to remove whitespace elsewhere in the ABNF?  Or is
> redundancy there OK?

Redundant opportunities for whitespace in the ABNF are not a problem.

Grüße, Carsten