Fully-qualified type names are not recognized

[roge]

Fully-qualified type names are not handled correctly for syntax highlighting.

In this example, the leading dot (.) in a fully-qualified type name is preventing the type name and field labels from being highlighted correctly:

protoc accepts these type references without issue and they are valid per the language specification:

Type References

Various elements in the source file allow for referencing another element, either defined in the same source file or defined in one of the source file's imports.

TypeName = [ dot ] QualifiedIdentifier .
QualifiedIdentifier = identifier { dot identifier } .

Examples

string
int32
UserResponse
other.Message
.foo.bar.Message
foo.bar.baz.Service.Request