use of pager on Windows psql

psql's print.c contains this piece of code:

/*
* PageOutput
*
* Tests if pager is needed and returns appropriate FILE pointer.
*/
FILE *
PageOutput(int lines, unsigned short int pager)
{
/* check whether we need / can / are supposed to use pager */
if (pager
#ifndef WIN32
&&
isatty(fileno(stdin)) &&
isatty(fileno(stdout))
#endif
)
{

Why are we not doing the isatty tests on Windows? We can and do use
isatty on Windows elsewhere, so I'm a bit mystified about this.

In fact, it looks to me like it would be much more sensible to #include
"settings.h" and then simply test pset.notty for all platforms.

cheers

andrew