RFC FS-1150—Allow ',' as a separator for pattern matching on named discriminated union fields

[edgarfgp]

Discussion thread for RFC FS-1150: #818

Language suggestion: fsharp/fslang-suggestions#957
Proposed implementation: dotnet/fsharp#18881

[Martin521]

It would be good to already point to places in the spec and documentation that need to be changed (like here and here) and to indicate if the changed documentation should just allow both separators or if it should tag semicolon as "allowed for historical/compatibility reasons". (I think we should do the latter.)

[edgarfgp]

changed documentation should just allow both separators or if it should tag semicolon as "allowed for historical/compatibility reasons". (I think we should do the latter.)

We are raising a new parser to prevent users mixing ; and , but not a warning about ` allowed for historical/compatibility. I thought it might be too intrusive. I guess we can introduce this an informational warning.

[Martin521]

I was not thinking of a warning, but just clarification in the documentation that comma is now the recommended symbol