then there are two modes determined by USE_SFIO:
USE_SFIO - If set causes PerlIO_xxx() to be #define-d onto sfio functions.
- A backward compatability mode for some specialist applications.
+ A backward compatibility mode for some specialist applications.
If USE_SFIO is not set then PerlIO_xxx() are real functions
defined in perlio.c which implement extra functionality
/* The default buffer size for the perlio buffering layer */
#ifndef PERLIOBUF_DEFAULT_BUFSIZ
-#define PERLIOBUF_DEFAULT_BUFSIZ 4096
+#define PERLIOBUF_DEFAULT_BUFSIZ (BUFSIZ > 8192 ? BUFSIZ : 8192)
#endif
#ifndef SEEK_SET