single quotes in strings break the pure codegen parser

[emily33901]

Example:

import "google/protobuf/descriptor.proto";

extend .google.protobuf.MethodOptions {
	optional string method_description = 50000;
}

message test_message {
    optional string a = 1 [default = "this won't parse"];
}

service test {
    rpc NiceFunction (Map<int32, string>) returns (int32) {
        option (method_description) = "Does nothing and doesn't care";
    }
}

and gives error

error: ParserErrorWithLocation(ParserErrorWithLocation { error: InternalError, line: 8, col: 48 })

using protobuf-codegen-pure = "2.0.4"

Am I missing something obvious?

[stepancheg]

Published fix as 2.0.5. Thanks!

[emily33901]

Thank you!