Dear Tom,
In message 20211021122325.GX7964@bill-the-cat you wrote:
Do you have any other feedback on the entire rest of the series?
I already wrote that I support the concept, and the few nit I saw have been fixed, I think. Except this unneeded breaking of backward compatibility.
Because I'm not sure the benefit of "we can still support '+' at the end of a variable name, if anyone uses that" outweighs "we can more easily append variables in constructing our environment without relying on uncommon operators".
We introduce a new feature here. Defining an append operator is a convenience thing. It could probably also solved using the preprocessor, likely in a more ugly way.
In any case, the feature is new, and the operator is new.
For the implementation it does not matter if we define this operator as "+=" or '=+" or "=." or something else.
the only difference is that any ioperator starting with an equal sign is inherently backward compatible without need for arbitrary new restrictions.
To me "=+" as the append syntax is worse than "no
- at the end of your variables".
In which way is it worse? For esthetic reasons?
I confirm that '+=' looks better. But '+=" is technically broken.
Best regards,
Wolfgang Denk