This is a reminder that we're having a DFDL Workgroup call this Thursday June 11, 11am EDT.US. Please send items you'd like on the agenda, and let me know if you plan to attend. I have this topic for discussion: * Peek feature - related Issue 66 - https://github.com/OpenGridForum/DFDL/issues/66 (about a lookAhead function) An idea has been proposed to generalize this to a more flexible peek/look-ahead capability. This is a requested feature for DFDL 2.0 allowing a parser to learn from examining the data once, and then use that knowledge in a subsequent parse over the same data. Details: - annotation on a xs:sequence - a parser to speculate forward and when it reaches the end of the sequence, resetting the position to the start of the sequence, but retaining information from the parse. - the retained information certainly includes DFDL variables set during the peek-ahead parse. - more controversial is the ability to retain the infoset, effectively allowing one to parse the same data multiple times. - does nothing on unparse. The annotated sequence is simply skipped by the unparser. - seems very easy to implement. Mike Beckerle Apache Daffodil PMC | daffodil.apache.org OGF DFDL Workgroup Co-Chair | www.ogf.org/ogf/doku.php/standards/dfdl/dfdl Owl Cyber Defense | www.owlcyberdefense.com