[DFDL-WG] dfdl:extraEscapedCharacters - should be able to be expression

[Steve Hanson]

Is the user who noticed this unable to create a schema to parse his data?
IBM has supported EDIFACT for nearly ten years, and nobody has raised
static extra escaped characters as a problem. So I'd be interested in
seeing the motivating example please.

On Fri, Feb 16, 2024 at 9:53 PM Mike Beckerle <mbeckerle at apache.org> wrote:

> A user has noticed that for DFDL escape schemes based on escape
> characters, the properties dfdl:escapeCharacter and
> dfdl:escapeEscapeCharacter can both be runtime-valued expressions, but not
> dfdl:extraEscapedCharacters.
>
> This is not consistent. A major motivation for having these properties be
> runtime expressions is EDI formats, and the example motivating the need for
> dfdl:extraEscapedCharacters to be an expression also comes from EDIFACT.
>
> See this Daffodil ticket with a link to the email thread discussing this:
> https://issues.apache.org/jira/browse/DAFFODIL-2876
>
> 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
>
>
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