[sc34wg3] CTM: Proposal for %mergemap directive
heuer at semagia.com
Wed Nov 21 07:52:55 EST 2007
Against CTM draft dtd. 2007-11-16 <http://www.jtc1sc34.org/repository/0935.htm>
The %mergemap directive is currently defined as follows:
mergemap-directive ::= '%mergemap' iri-ref notation?
notation ::= iri-ref
Where the optional "notation" is again an IRI.
I wonder if it wouldn't make sense to change the syntax to
notation ::= string
The "string" is case-insensitive and a CTM parser must recognize the
following values: "xtm" and "ctm", but other values like "AsTMa=" etc.
are allowed, too.
- The parser can ignore the EOL delimiter after the mergemap directive
(this marker is currently necessary to distinguish the notation from
a subject identifier)
- Syntax is much shorter:
%mergemap http://example.org/ http://www.topicmaps.org/xtm/
%mergemap http://example.org/ "xtm"
- The user must not remember a lengthily IRI and potentially typos are
- An IRI is "more unique" than a string
- A possible version information may be encoded in an IRI more easily
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