CSharp grammar has incorrect definition of Interpolated Strings #1146
Description
From the grammar:
interpolated_verbatium_string_part
: interpolated_string_expression
| DOUBLE_CURLY_INSIDE
| VERBATIUM_DOUBLE_QUOTE_INSIDE
| VERBATIUM_INSIDE_STRING
;
It's not a double curly by spec. It's a single curly. Here's the correct def:
https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/tokens/interpolated
So the grammar should be
interpolated_verbatium_string_part
: interpolated_string_expression
| SINGLE_CURLY_INSIDE
| VERBATIUM_DOUBLE_QUOTE_INSIDE
| VERBATIUM_INSIDE_STRING
;