Potential bug: LookupFlags.mark_attachment_type() always returns 0

[Lie Yan]

ttf-parser/src/ggg/lookup.rs

Line 139 in dabe8a5

 #[inline] pub fn mark_attachment_type(self) -> u8 { (self.0 & 0xFF00) as u8 } 

This method always return zero.

[Yevhenii Reizner]

Good catch. Thanks!