66     while (ps.p_stack[ps.tos] == ifhead && tk != elselit) {  in parse()
68 	ps.p_stack[ps.tos] = stmt;	/* apply the if(..) stmt ::= stmt  in parse()
78 	ps.search_brace = opt.btype_2;  in parse()
80 	if (ps.p_stack[ps.tos] != decl) {	/* only put one declaration  in parse()
84 	    ps.p_stack[++ps.tos] = decl;  in parse()
85 	    ps.il[ps.tos] = ps.i_l_follow;  in parse()
89 		ps.ind_level = 0;  in parse()
90 		for (i = ps.tos - 1; i > 0; --i)  in parse()
91 		    if (ps.p_stack[i] == decl)  in parse()
92 			++ps.ind_level;	/* indentation is number of  in parse()
94 		ps.i_l_follow = ps.ind_level;  in parse()
100 	if (ps.p_stack[ps.tos] == elsehead && opt.else_if) /* "else if ..." */  in parse()
106 		ps.i_l_follow = ps.il[ps.tos--];  in parse()
111 	ps.p_stack[++ps.tos] = tk;  in parse()
112 	ps.il[ps.tos] = ps.ind_level = ps.i_l_follow;  in parse()
113 	++ps.i_l_follow;	/* subsequent statements should be indented 1 */  in parse()
114 	ps.search_brace = opt.btype_2;  in parse()
119 	if (ps.p_stack[ps.tos] == stmt || ps.p_stack[ps.tos] == decl  in parse()
120 		|| ps.p_stack[ps.tos] == stmtl)  in parse()
121 	    ++ps.i_l_follow;	/* it is a random, isolated stmt group or a  in parse()
128 		--ps.ind_level;  in parse()
132 		if (ps.p_stack[ps.tos] == swstmt && opt.case_indent >= 1)  in parse()
133 		    --ps.ind_level;  in parse()
140 	ps.p_stack[++ps.tos] = lbrace;  in parse()
141 	ps.il[ps.tos] = ps.ind_level;  in parse()
142 	ps.p_stack[++ps.tos] = stmt;  in parse()
144 	ps.il[ps.tos] = ps.i_l_follow;  in parse()
148 	if (ps.p_stack[ps.tos] == dohead) {  in parse()
150 	    ps.ind_level = ps.i_l_follow = ps.il[ps.tos];  in parse()
151 	    ps.p_stack[++ps.tos] = whilestmt;  in parse()
152 	    ps.il[ps.tos] = ps.ind_level = ps.i_l_follow;  in parse()
155 	    ps.p_stack[++ps.tos] = whilestmt;  in parse()
156 	    ps.il[ps.tos] = ps.i_l_follow;  in parse()
157 	    ++ps.i_l_follow;  in parse()
158 	    ps.search_brace = opt.btype_2;  in parse()
165 	if (ps.p_stack[ps.tos] != ifhead)  in parse()
168 	    ps.ind_level = ps.il[ps.tos];	/* indentation for else should  in parse()
170 	    ps.i_l_follow = ps.ind_level + 1;	/* everything following should  in parse()
172 	    ps.p_stack[ps.tos] = elsehead;  in parse()
174 	    ps.search_brace = opt.btype_2 | opt.else_if;  in parse()
180 	if (ps.tos > 0 && ps.p_stack[ps.tos - 1] == lbrace) {  in parse()
181 	    ps.ind_level = ps.i_l_follow = ps.il[--ps.tos];  in parse()
182 	    ps.p_stack[ps.tos] = stmt;  in parse()
189 	ps.p_stack[++ps.tos] = swstmt;  in parse()
190 	ps.cstk[ps.tos] = case_ind;  in parse()
192 	ps.il[ps.tos] = ps.i_l_follow;  in parse()
193 	case_ind = ps.i_l_follow + opt.case_indent;	/* cases should be one  in parse()
196 	ps.i_l_follow += opt.case_indent + 1;	/* statements should be two  in parse()
198 	ps.search_brace = opt.btype_2;  in parse()
204 	ps.p_stack[++ps.tos] = stmt;  in parse()
205 	ps.il[ps.tos] = ps.ind_level;  in parse()
215     if (ps.tos >= STACKSIZE - 1)  in parse()
221     for (i = 1; i <= ps.tos; ++i)  in parse()
222 	printf("(%d %d)", ps.p_stack[i], ps.il[i]);  in parse()
276 	switch (ps.p_stack[ps.tos]) {  in reduce()
279 	    switch (ps.p_stack[ps.tos - 1]) {  in reduce()
284 		ps.p_stack[--ps.tos] = stmtl;  in reduce()
288 		ps.p_stack[--ps.tos] = dohead;  in reduce()
289 		ps.i_l_follow = ps.il[ps.tos];  in reduce()
294 		ps.p_stack[--ps.tos] = ifhead;  in reduce()
295 		for (i = ps.tos - 1;  in reduce()
297 			 ps.p_stack[i] != stmt  in reduce()
299 			 ps.p_stack[i] != stmtl  in reduce()
301 			 ps.p_stack[i] != lbrace  in reduce()
304 		ps.i_l_follow = ps.il[i];  in reduce()
314 		case_ind = ps.cstk[ps.tos - 1];  in reduce()
323 		ps.p_stack[--ps.tos] = stmt;  in reduce()
324 		ps.i_l_follow = ps.il[ps.tos];  in reduce()
334 	    if (ps.p_stack[ps.tos - 1] == dohead) {  in reduce()
336 		ps.tos -= 2;  in reduce()