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

Oren Ben-Kiki <[email protected]> Tue, 29 Sep 2009 22:32:24 -0700
Newsgroups	gmane.text.yaml.general
Message-ID	<1254288744.5043.39.camel@nero>
On Thu, 2009-09-03 at 04:21 +0900, Osamu TAKEUCHI wrote: 
> Dear the YAML spec writers,
> 
> The rest are less important comments or favors regarding to 
> the YAML 1.2 spec dated 2009-07-21.
> 
> 1. Omission of line break at the end of YAML stream

Nice catch! I fixed this in the errata and the updated spec.

> 2. Distinguish non-content white spaces from as-space white spaces

Nice idea, but that would require a major renaming of productions. I
looked over the existing ones and there's explicit text next to the
productions stating whether they are/not content (the names of the
productions containing them are also pretty clear). There are no cases
(that I saw) where we mix non-content spaces and content characters in
the same production without going through an clear intermediate
production. I think we can live with the current state, although again I
agree it may have been clearer to split the names at a lower level.

> 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.

Thanks for your review of the spec!

Oren Ben-Kiki


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