50 lines
851 B
C
50 lines
851 B
C
#include "a.h"
|
|
|
|
/*
|
|
* Section 3 - page control (mostly irrelevant).
|
|
*/
|
|
|
|
/* page offset */
|
|
void
|
|
po(int o)
|
|
{
|
|
nr(L(".o0"), getnr(L(".o")));
|
|
nr(L(".o"), o);
|
|
}
|
|
|
|
void
|
|
r_po(int argc, Rune **argv)
|
|
{
|
|
if(argc == 1){
|
|
po(getnr(L(".o0")));
|
|
return;
|
|
}
|
|
if(argv[1][0] == '+')
|
|
po(getnr(L(".o"))+evalscale(argv[1]+1, 'v'));
|
|
else if(argv[1][0] == '-')
|
|
po(getnr(L(".o"))-evalscale(argv[1]+1, 'v'));
|
|
else
|
|
po(evalscale(argv[1], 'v'));
|
|
}
|
|
|
|
/* .ne - need vertical space */
|
|
/* .mk - mark current vertical place */
|
|
/* .rt - return upward */
|
|
|
|
void
|
|
t3init(void)
|
|
{
|
|
nr(L(".o"), eval(L("1i")));
|
|
nr(L(".o0"), eval(L("1i")));
|
|
nr(L(".p"), eval(L("11i")));
|
|
|
|
addreq(L("pl"), r_warn, -1);
|
|
addreq(L("bp"), r_nop, -1);
|
|
addreq(L("pn"), r_warn, -1);
|
|
addreq(L("po"), r_po, -1);
|
|
addreq(L("ne"), r_nop, -1);
|
|
addreq(L("mk"), r_nop, -1);
|
|
addreq(L("rt"), r_warn, -1);
|
|
}
|
|
|