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

[Mike Beckerle]

Here is the email thread which discusses the actual example:

 https://lists.apache.org/thread/yd1zo73sjf49v2wqnqwh0dwzy26k0v4c

On Sat, Feb 17, 2024 at 5:25 AM Steve Hanson <smhdfdl at gmail.com> wrote:

> 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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