clang-scan-deps: macro is not handled correctly

[RichardLuo0]

#define STD import std;
STD;

int main() {
    std::cout << 1 <<std::endl;
}

This file will compile, but clang-scan-deps gives:

{
  "revision": 0,
  "rules": [
    {
      "primary-output": "test"
    }
  ],
  "version": 1
}

The command is clang-scan-deps.exe -format=p1689 -- clang++.exe -fansi-escape-codes -fcolor-diagnostics -c -march=native -std=c++20 -Wall main.cpp -o test

But if I change to

#define STD std;
import STD;

int main() {
    std::cout << 1 <<std::endl;
}

Now it gives the correct output.

[adalisk-emikhaylov]

If I'm reading http://eel.is/c++draft/lex.pptoken#4 correctly, the first snippet is illegal. import is a preprocessor directive, not unlike #include an others.