git: 9front

ref: b143811a53bf25824e74b7e6e6c2ee7af8c7a954
dir: /sys/src/cmd/htmlroff/t14.c/

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#include "a.h"

/*
 * 14. Three-part titles.
 */
void
r_lt(int argc, Rune **argv)
{
	Rune *p;
	
	if(argc < 2)
		nr(L(".lt"), evalscale(L("6.5i"), 'm'));
	else{
		if(argc > 2)
			warn("too many arguments for .lt");
		p = argv[1];
		if(p[0] == '-')
			nr(L(".lt"), getnr(L(".lt"))-evalscale(p+1, 'm'));
		else if(p[0] == '+')
			nr(L(".lt"), getnr(L(".lt"))+evalscale(p+1, 'm'));
		else
			nr(L(".lt"), evalscale(p, 'm'));
	}
}

void
t14init(void)
{
	addreq(L("tl"), r_warn, -1);
	addreq(L("pc"), r_nop, -1);	/* page number char */
	addreq(L("lt"), r_lt, -1);
}