S_ISDIR            26 lib/isdir.c    # undef S_ISDIR
S_ISDIR            30 lib/isdir.c    # define S_ISDIR(Mode) (((Mode) & S_IFMT) == S_IFDIR)
S_ISDIR           102 src/system.h   # undef S_ISDIR
S_ISDIR           106 src/system.h   # define S_ISDIR(Mode) (((Mode) & S_IFMT) == S_IFDIR)