Hygiene for function-like procedural macros

[antoyo]

Hello.
I wonder how the hygiene works for function-like procedural macros.
I made a test with these macros that you can find here.

However, it does not compile.
I get the following error:

error[E0425]: cannot find value `vector` in this scope
 --> src/main.rs:9:5
  |
9 |     pp!(vector);
  |     ^^^^^^^^^^^^ not found in this scope

while if the call is:

pp!(vec![1, 2, 3]);

it will compile and works.

Is this an issue with hygiene?

Thanks.

[abonander]

There is no hygiene support for procedural macros yet. @jseyfried is working on this, though.

[petrochenkov]

Closing as a duplicate of #54724.