facebook/warp — pull request #13 by WalterBright (2014-04-16 19:16:52+00:00)
Title: checked for raw string literal in wrong place

test case:
```
#define LOG(severity, ...) severity __VA_ARGS__
#define EVERY(severity, ...) LOG(severity, ##__VA_ARGS__)
EVERY(ER, "Data", line);
```