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#include "a.h"
/*
* 11. Local Horizontal and Vertical Motions, and the Width Function.
*/
int
e_0(void)
{
/* digit-width space */
return ' ';
}
int
dv(int d)
{
Rune sub[6];
d += getnr(L(".dv"));
nr(L(".dv"), d);
runestrcpy(sub, L("<sub>"));
sub[0] = Ult;
sub[4] = Ugt;
if(d < 0){
sub[3] = 'p';
ihtml(L(".dv"), sub);
}else if(d > 0)
ihtml(L(".dv"), sub);
else
ihtml(L(".dv"), nil);
return 0;
}
int
e_v(void)
{
dv(eval(getqarg()));
return 0;
}
int
e_u(void)
{
dv(eval(L("-0.5m")));
return 0;
}
int
e_d(void)
{
dv(eval(L("0.5m")));
return 0;
}
int
e_r(void)
{
dv(eval(L("-1m")));
return 0;
}
int
e_h(void)
{
getqarg();
return 0;
}
int
e_w(void)
{
Rune *a;
Rune buf[40];
static Rune zero;
a = getqarg();
if(a == nil){
warn("no arg for \\w");
a = &zero;
}
runesnprint(buf, sizeof buf, "%ld", runestrlen(a));
pushinputstring(buf);
nr(L("st"), 0);
nr(L("sb"), 0);
nr(L("ct"), 0);
return 0;
}
int
e_k(void)
{
getname();
warn("%Ck not available", backslash);
return 0;
}
void
t11init(void)
{
addesc('|', e_nop, 0);
addesc('^', e_nop, 0);
addesc('v', e_v, 0);
addesc('h', e_h, 0);
addesc('w', e_w, 0);
addesc('0', e_0, 0);
addesc('u', e_u, 0);
addesc('d', e_d, 0);
addesc('r', e_r, 0);
addesc('k', e_k, 0);
}
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