read on closed socketpair returns eof

[unix-history] / usr / src / usr.bin / window / wwmisc.c

#ifndef lint
static char sccsid[] = "@(#)wwmisc.c    3.8 %G%";
#endif

#include "ww.h"
#include "tt.h"
#include "char.h"

/*
* Sufficient but not necessary test for total visibility.
*/
wwvisible(w)
register struct ww *w;
{
       register i;
       register nvis = 0;

       for (i = w->ww_i.t; i < w->ww_i.b; i++)
               nvis += w->ww_nvis[i];
       if (w->ww_hascursor
           && w->ww_cur.r >= w->ww_i.t && w->ww_cur.r < w->ww_i.b
           && w->ww_cur.c >= w->ww_i.l && w->ww_cur.c < w->ww_i.r
           && wwsmap[w->ww_cur.r][w->ww_cur.c] == w->ww_index)
               nvis++;
       return nvis == w->ww_i.nr * w->ww_i.nc;
}

wwbell()
{
       ttputc(ctrl(g));
}