This seems to be used for the same meaning as it is in regex, however it is not listed as an extension in https://kdl.dev/spec/#name-grammar-language It also does not seem to have a meaning in any ABNF language I am aware of.
This seems to be used for the same meaning as it is in regex, however it is not listed as an extension in https://kdl.dev/spec/#name-grammar-language
It also does not seem to have a meaning in any ABNF language I am aware of.