On 26 May 2021, Stefan Monnier wrote:

>> +(defconst ruby--prettify-symbols-alist
>> +  '(("and" . ?∧)
>> +    ("&&" . ?∧)
>
> Are `and` and `&&` absolutely 100% completely totally equivalent in Ruby?
>
>> +    ("or" . ?∨)
>> +    ("||" . ?∨)
>
> Same question for `or` and `||`?

An excellent question, and I think I overstepped things.  The documentation¹ and 
answers on Stack Exchange² say "&&" and "||" are logical operators (so the 
logical symbols work) but "and" and "or" have lower precedence and are used 
differently.

It'd be best to just prettify "&&" and "||" with symbols, and anyone who wants 
"and" and "or" could add those by hand.  Shall I send a revised patch, or do you 
just want to delete those bits?

Thanks,

Bill

¹ https://ruby-doc.com/core/doc/syntax/precedence_rdoc.html
² E.g. https://stackoverflow.com/a/2083118/854346
--
William Denton
https://www.miskatonic.org/
Librarian, artist and licensed private investigator.