[DFDL-WG] example for extraEscapedCharacters

[Steve Hanson]

Mike, sent you a separate email, from 2009.

Regards
 
Steve Hanson
IBM Hybrid Integration, Hursley, UK
Architect, IBM DFDL
Co-Chair, OGF DFDL Working Group
smh at uk.ibm.com
tel:+44-1962-815848
mob:+44-7717-378890
Note: I work Tuesday to Friday 



From:   Mike Beckerle <mbeckerle.dfdl at gmail.com>
To:     DFDL-WG <dfdl-wg at ogf.org>
Date:   20/05/2021 18:24
Subject:        [EXTERNAL] [DFDL-WG] example for extraEscapedCharacters
Sent by:        "dfdl-wg" <dfdl-wg-bounces at ogf.org>



I've been searching our email history for the motivating example for 
extraEscapedCharacters property.

I can't find it. Does anyone recall this?

I vaguely recall a format where we had CSV-like data that already 
contained escaped characters like 

"foo\nbar\,baz,next,next"

Where the \n is just part of the data, regardless of the fact that \ is 
also the escape character. 
Normal rules would remove the "\" since it is the escape character, and 
that would result in corrupting such data. 

But it makes no sense to have extraEscapedCharacter="n" since n is just a 
letter and could appear without the escape. It would be wrong to escape 
every letter n. 

So this example isn't sufficient. I see no way to cope with this 
particular case other than lengthKind='pattern' which is the usual way to 
cope with complexities like this.

But I know there was a motivating example for extraEscapedCharacters 
property. 



Mike Beckerle | OGF DFDL Workgroup Co-Chair | Owl Cyber Defense | 
www.owlcyberdefense.com
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