[Cuis-dev] Parser gets confused when using $| in binary selectors

[Juan Vuletich]

On 5/13/2022 1:41 PM, Nicolas Cellier via Cuis-dev wrote:
> So we did not have to introduce the @- selectors & co...
>

Given the path followed by Squeak and Pharo, and what ANSI Smalltalk 
says, and the preferences several of you just said, the attach is my 
proposal.

It adds a new preference #atMinusDigitMeaning. Possible values are: 
#disabled, #negativeNumberParameter and #atMinusSelector. It doesn't 
only control '@-', but any binary selector ending in $-, with size > 1.

The question is what to use as a default value.
ST-80 and Squeak go with #negativeNumberParameter.
ANSI Smalltalk and Pharo do #atMinusSelector.
#disabled is also a reasonable alternative, helping programmers 
understand a smell in their code.

Thanks,

-- 
Juan Vuletich
www.cuis-smalltalk.org
https://github.com/Cuis-Smalltalk/Cuis-Smalltalk-Dev
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