I don't think it would change the difficulty of adding new characters for keywords and operators. It would be no harder than adding @ to the basic source character set. 

On Thu, May 28, 2020, 18:40 Thiago Macieira via SG16 <sg16@lists.isocpp.org> wrote:
On Thursday, 28 May 2020 01:04:23 PDT Corentin via SG16 wrote:
>    - The notion of basic source character set is removed

Does that mean @ can be used as a new operator?

Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
   Software Architect - Intel System Software Products

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