Re: Comments and favors on YAML 1.2 spec 2009-07-21

Oren,

Thanks a lot for the update!

>> 3. Form feed (#x0C) in YAML 1.2 stream
>>
>> There is a note that "YAML 1.2 processors parsing a version 
>> 1.1 document should therefore treat these line breaks as non-break 
>> characters, with an appropriate warning" in Sect. 5.4. But it 
>> seems that the form feed (#x0C), which was a line break in YAML 1.1,
> 
> Form feed never was a valid line break character. Not in YAML 1.1 and
> not ever.

Then, the description in Sect 5.4 is misleading.
I read "the above line break characters" to indicate #x0C, #x85, 
#x2028 and #2029.

> 5.4. Line Break Characters
>
>  All other characters, including the form feed (#x0C), are considered 
> to be non-break characters. Note that these include the non-ASCII 
> line breaks: next line (#x85), line separator (#x2028) and paragraph 
> separator (#x2029).
> 
> YAML version 1.1 did support the above line break characters; however, 
> JSON does not. Hence, to ensure JSON compatibility, YAML treats them 
> as non-break characters as of version 1.2. In theory this would cause 
> incompatibility with version 1.1; in practice these characters were 
> rarely (if ever) used. YAML 1.2 processors parsing a version 1.1 
> document should therefore treat these line breaks as non-break 
> characters, with an appropriate warning.


Best,
Osamu TAKEUCHI


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