Hello Jonathan,

Jonathan Gray wrote on Tue, Jun 10, 2025 at 11:37:05AM +1000:

> fpurge() was added by Keith Bostic in December 1988

I'm unable to confirm this claim, SCCS history of the file
fpurge.c only goes back to 91/01/20.  Then again, it is not unusual
for the CSRG to only start SCCS control of pieces of code months or
even years after it was already released.

> and first appeared in 4.3BSD-Reno.

But that part is definitely correct, it was neither in Tahoe
nor in Net/1, so OK schwarze@.

If you want, you can optionally shorten your text to

  .At v4
  and
  .Fn fpurge
  in
  .Bx 4.3 Reno .

Yours,
  Ingo


> Index: fflush.3
> ===================================================================
> RCS file: /cvs/src/lib/libc/stdio/fflush.3,v
> diff -u -p -r1.19 fflush.3
> --- fflush.3	4 Jun 2025 00:21:20 -0000	1.19
> +++ fflush.3	10 Jun 2025 01:13:09 -0000
> @@ -126,3 +126,7 @@ The
>  .Fn fflush
>  function first appeared in
>  .At v4 .
> +The
> +.Fn fpurge
> +function first appeared in
> +.Bx 4.3 Reno .