Which language constructs could be done as a library if we accept some breaking changes?

Ola Fosheim Grøstad ola.fosheim.grostad at gmail.com
Thu Dec 2 15:26:51 UTC 2021

On Thursday, 2 December 2021 at 14:38:21 UTC, Paul Backus wrote:
> The syntax used for macro expansion is a trivial detail. Rust 
> has "real" AST macros, and they also use `!` for expansion 
> (`vec!`, `println!`, etc.).

It isn't trivial if you can match on anything you want. If you 
can match on "if (x==123)" etc then you are opening Pandora's box.

Of course, that was also never suggested in the thread. Only 
adjustments to current semantics were suggested, not a new 
language-family like 12345swordy implied…

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