test.h
typedef int test;
test.c
#include "test.h"
int main(){
test local;
}
Now run a search & replace with EXACTLY these options (especially "current project"):
(https://i.postimg.cc/DfBmcZJ1/Dialog.jpg)
The editor will hang in an infinite loop.
test with trailing space don't hang, but have to test how it works otherwise.