On 1/10/16, 7:35 AM, "Harbs" <[email protected]> wrote:
>Here’s an item in the spec which I’m having trouble understanding:
>
>When the [[AddInScopeNamespace]] method of an XML object x is called with
>a namespace N, the following steps are taken:
>1. If x.[[Class]] ∈ {"text", "comment", "processing-instruction",
>“attribute”}, return
>2. If N.prefix != undefined
> a. If N.prefix == "" and x.[[Name]].uri == "", return
> b. Let match be null
> c. For each ns in x.[[InScopeNamespaces]]
> i. If N.prefix == ns.prefix, let match = ns
> d. If match is not null and match.uri is not equal to N.uri
> i. Remove match from x.[[InScopeNamespaces]]
> e. Let x.[[InScopeNamespaces]] = x.[[InScopeNamespaces]] ∪ { N }
> f. If x.[[Name]].[[Prefix]] == N.prefix
> i. Let x.[[Name]].prefix = undefined
> g. For each attr in x.[[Attributes]]
> i. If attr.[[Name]].[[Prefix]] == N.prefix, let attr.[[Name]].prefix
>= undefined
>3. Return
>
>I do not understand e through g. It looks like the spec says you are
>supposed to remove the prefixes of the XML which has the namespace added
>to it if the prefix matches the added namespace. Why would you do that?
I don't know for sure. Maybe because they are now in scope, a prefix is
no longer needed?
-Alex
