RE: agenda+ Which definition of whitespace to use?

My 2 cents about “why are RLM and LRM included as whitespace in some definitions, but not RLI, LRI, PDI, etc”.

I am not sure that RLM and LRM should be defined as whitespace characters (and if they should, ALM should probably also be defined as such), but IMHO there is a big difference between LRM/RLM/ALM and RLI/LRI/PDI.  The first group are characters; most of the time they are not displayed, like ZERO WIDTH characters.  The second group do not qualify as characters, they are controls, and as such generally should come with a closing PDI.

 

בברכה,  מתתיהו

Shalom (Regards),  Mati

 

From: r12a [mailto:ishida@w3.org] 
Sent: Wednesday, August 3, 2022 4:24 PM
To: Internationalization Working Group
Subject: agenda+ Which definition of whitespace to use?

 

Specdev currently has https://deploy-preview-77--bp-i18n-specdev.netlify.app/#char_whitespace

But this recommends 3 approaches, only 2 of which make it to the mustard, and it's still not clear to me which to use when.  

Other questions include:
- do we really want to recommend the use of Z property, especially given that it doesn't include obvious ASCII whitespace characters? Where did this recommendation come from?
- why are RLM and LRM included as whitespace in some definitions, but not RLI, LRI, PDI, etc.?


It would be great if we could discuss this tomorrow.

ri