`with_parse_expand(...)`Appears to be not working

[patrickelectric]

Example here:

https://github.com/patrickelectric/rust-binds/tree/macro-experiment

https://github.com/patrickelectric/rust-binds/blob/macro-experiment/macros/src/lib.rs

https://github.com/patrickelectric/rust-binds/blob/macro-experiment/src/lib.rs

Header file is generated empty:

#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>

[patrickelectric]

Appears to work fine under nightly

[patrickelectric]

And only in 0.21