Re: [Yaml-core] Re: "!" bug in the spec

[<in...@tt...>]

On 15/04/06 00:06 +0300, Oren Ben-Kiki wrote:
> 
> OK... I just had a chat with Xitology and I finally remembered why the 
> current spec makes ! "10:20" a no-op. It had to do with implicit typing 
> of collections. The spec is still a bit muddled, though. Here's what it 
> should have said...
> 
> - There are two non-specific tags, '?' and '$'.
> 
> - '$' ("non-implicit") is resolved as !!str, !!map and !!seq based on 
> the node kind.
> 
> - '?' ("is-implicit") is resolved by matching the content against an 
> application specific repository (which presumably contains stuff like 
> integers, dates, etc. for scalars and possibly sets, ordered mappings, 
> etc. for collections)
> 
> - By default, untagged plain scalars and all untagged collections are 
> "is-implicit". All other untagged nodes are "non-implicit". Explicitl 
> tagged nodes get the specific tag, of course.
> 
> - Tagging a node with a single "!" means reversing the default - plain 
> scalars and collection become "non-implicit", everything else becomes 
> "is-implicit".

I don't like this. What does it buy us in clarity? All the reversals can
be done in much clearer ways. Let's just make '!' mean is-implicit.

Cheers, Ingy