Indent preprocessor directives

cpp-indent-preprocessor-directives

How preprocessor directives (#if, #define, ...) are indented relative to surrounding code.

Default value:

normal

none

void f() {
#if X
  int a;
#endif
}

normal

void f() {
  #if X
  int a;
  #endif
}

do_not_change

void f() {
#if X
  int a;
#endif
}