Bugfix: Print functions are not always printing the entire string.

Bugfix: Print functions are not always printing the entire string.

I observed this when working with printing binary data in '%Q'.

The fwrite_unlocked() might prematurely return but not on an error.
If it does, first check to see if it is an error and then keep trying until everything is printed.

This is more of a band-aid fix.
This requires an additional variable and an additional loop.
I would rather avoid all of this and so a re-design is likely necessary for greater efficiency.
As this is not my focus at the time I am going to tolerate this less than desirable design.