# Objective
While working on #7784, I noticed that a `#define VAR` in a `.wgsl` file is always effective, even if it its scope is not accepting lines.
Example:
```c
#define A
#ifndef A
#define B
#endif
```
Currently, `B` will be defined although it shouldn't. This PR fixes that.
## Solution
Move the branch responsible for `#define` lines into the last else branch, which is only evaluated if the current scope is accepting lines.
e4fd25a952