On 22 Jun 2018, at 5:54 am, David Kastrup <[log in to unmask]> wrote:
> 
> A stupid question that just occured to me: should we be discouraging
> registering prefixes that match another prefix' contribution to the
> overly simplistic hash function used in almost all TeX engines?

Would it be easier to update the hash function in the engines? :) 
What would be the easiest way to test for clashes?

W