S_ISREG          1346 file.c         #   define S_ISREG(m) ((m & S_IFMT) == S_IFREG)
S_ISREG           172 include/ruby/defines.h #define S_ISREG(mode)  (((mode) & (0170000)) == (0100000))
S_ISREG           297 include/ruby/win32.h #undef S_ISREG
S_ISREG           302 include/ruby/win32.h #define S_ISREG(m)  (((unsigned short)(m) & S_IFMT) == S_IFREG)
S_ISREG           471 io.c           #   define S_ISREG(m) ((m & S_IFMT) == S_IFREG)