GCPRO3           3192 test/manual/etags/c-src/emacs/src/lisp.h #define GCPRO3(varname1, varname2, varname3) \
GCPRO3           3217 test/manual/etags/c-src/emacs/src/lisp.h #define GCPRO3(a, b, c)							\
GCPRO3           3278 test/manual/etags/c-src/emacs/src/lisp.h #define GCPRO3(a, b, c)							\