Plan 9 from Bell Labs’s /usr/web/sources/contrib/fernan/nhc98/src/cpphs/tests/cpp
#define /**/ ++ `mplus` // not expected to work #define 0 mzero // not expected to work #define x0 X' // should work #define x' Xprime // should work #define `foo` .(foo)/**/, // bizarreness x ++ y = x0 * 0 * y `foo` x' // /*
