Re: @xml:base with @rendition (and maybe other pointers)

> On May 4, 2017, at 1:31 PM, John P. McCaskey =
<[email protected]> wrote:
>=20
> What is the short bottom-line guidance for someone trying to encode a =
document? Is it this?
>=20
> To point inside a TEI document, as for @rendition, use pointers of the =
form #destination. Any later changes to xml:base values will not mess up =
your internal # pointers.
>=20
> Don=E2=80=99t try to point outside your TEI document by using xml:base =
plus a #destination in the pointer attribute. No xml:base attribute will =
be prepended to a pointer that begins with a #.

No.   Sorry.  That=E2=80=99s not the way it works, and I think this =
discussion has already demonstrated that it=E2=80=99s a dangerous way to =
describe the behavior. =20

If you want to keep things simple for the encoders, I=E2=80=99d rephrase =
this as something like:  Don=E2=80=99t try to point outside your TEI =
document by using xml:base plus a #destination in the pointer attribute. =
 It does not have the desired meaning.  Point outside your TEI document =
either using an absolute URI or an xml:base attribute plus the final =
part of the path (the =E2=80=98file name=E2=80=99 part) and the fragment =
identifier.  So NOT <ptr xml:base=3D=E2=80=9Clib/foo.xml=E2=80=9D =
target=3D=E2=80=9C#bar=E2=80=9D/> but <ptr xml:base=3D=E2=80=9Clib/=E2=80=9D=
 target=3D=E2=80=9Cfoo.xml#bar=E2=80=9D/>.


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C. M. Sperberg-McQueen
Black Mesa Technologies LLC
[email protected]
http://www.blackmesatech.com
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