I realize I never responded directly to this email.

We created two improvement requests for the Daffodil issues raised here.

https://opensource.ncsa.illinois.edu/jira/browse/DFDL-1513 is about the true vs. fn:true() issue, and the uninformative diagnostic message Daffodil produces when you write "true" but should have written "fn:true()" in a DFDL expression.

https://opensource.ncsa.illinois.edu/jira/browse/DFDL-1512 is about the uninformative diagnostic when one puts a prefixed property like dfdl:length into a dfdl format annotation like dfdl:simpleType, rather than stripping off that dfdl: prefix from the property. This is such a common cut/paste error that the diagnostic message should be very specific at suggesting what is wrong.

Mike Beckerle | OGF DFDL Workgroup Co-Chair | Tresys Technology | www.tresys.com

Please note: Contributions to the DFDL Workgroup's email discussions are subject to the OGF Intellectual Property Policy

On Mon, Apr 25, 2016 at 5:18 AM, Michele Zundo <michele.zundo@esa.int> wrote:

Dear Steve/Mike,

we have run some of our DFDL schema through the daffodil parser and identified 3 issues
described in the attached document. The second is expected, but could you please
review/comment the first and the last (in red in the text ? )

Thanks

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