Excluding prefix on p:inline (was Re: XProc Minutes 31 Jan 2008)

/ Jeni Tennison <jeni@jenitennison.com> was heard to say:
| Although we could punt to extension steps that others write,
| namespaces cause such problems generally, I think we should make
| namespace handling as straight-forward as possible.

Could we punt to XML 1.1? You can just undeclare them in XML 1.1.

| ---
| Proposal 1:
|
| When a document is created using <p:inline>, each element node in the
| document will have a copy of the namespace nodes from the original
| element in the pipeline document with the exception of certain
| excluded namespaces. These namespaces are:
|
| (Version A: Least change)
|
|   * The XProc namespace ...
|   * Any namespace whose prefix is listed as an ignored namespace with
| an ignore-prefixes attribute

We could name that 'exclude-prefixes', right?

| (Version B: Similar to XSLT)
|
|   * The XProc namespace ...
|   * Any namespace whose prefix is listed as an extension namespace
| with an extension-prefixes attribute
|   * Any namespace whose prefix is listed as an excluded namespace with
| an exclude-inline-prefixes attribute
|
| (Version C: Simplest)
|
|   * All namespaces except those listed in the include-prefixes
| attribute on the <p:inline> element
|
| Note that the resulting element node will always have a namespace node
| for its own namespace, and for the namespaces of its ancestors in the
| resulting document, even if these namespaces would otherwise be
| excluded.
|
| ---
|
| Version A doesn't require any changes to the syntax, just a bit of
| rewording as above in the description of <p:inline>.

We don't have ignored namespaces anymore, so...

| Version B renames ignore-prefixes to extension-prefixes (which I think
| better describes what it does) and introduces a new
| exclude-inline-prefixes attribute.

We don't have them either :-)

| Version C adds an attribute to <p:inline> that works by *including*
| the listed namespaces rather than excluding them
|
| I think C is probably best.

I'm inclined to go with A, actually, adding an 'exclude-prefixes'
attribute to p:inline. Well, honestly, I'm inclined to use XML 1.1,
but...

                                        Be seeing you,
                                          norm

-- 
Norman Walsh <ndw@nwalsh.com> | The truest wild beasts live in the most
http://nwalsh.com/            | populous places.-- Gracián