Issue #20070 has been updated by Dan0042 (Daniel DeLorme). zverok (Victor Shepelev) wrote in #note-1:
I am though thinking that maybe some slow future changes to the `rescue` can be made, to "truly" pattern-match against errors, but I am not sure yet.
A bit off-topic but I also did some thinking about this and came to the conclusion the `rescue` syntax is too incompatible with pattern matching. We'd have to introduce a `rescue in` syntax in order to do stuff like `rescue in Exception(message: /foobar/) => err` ---------------------------------------- Feature #20070: commas in pattern match https://bugs.ruby-lang.org/issues/20070#change-105712 * Author: Dan0042 (Daniel DeLorme) * Status: Open * Priority: Normal ---------------------------------------- In pattern matching, `case v; in 1,2,3` is a synonym for `case v; in [1,2,3]` This is the one thing that keeps confusing me, that I haven't been able to get used to. Because I'm used to `case v; when 1,2,3` it feels like `case v; in 1,2,3` should have a similar meaning. So it's possible to omit the square brackets but honestly I don't see much point for that, it just makes it look to me like something it is not. In other words, I feel it would be far more intuitive (at least to me) if ```ruby case v in 1,2,3 ``` was a synonym for ```ruby case v in 1 in 2 in 3 ``` or possibly a synonym for ```ruby case v in (1|2|3) ``` which would make it similar to the syntax in `rescue A, B, C => err` Is it too late to change this? -- https://bugs.ruby-lang.org/