60     while (ps.p_stack[ps.tos] == ifhead && tk != elselit) {  in parse()
62 	ps.p_stack[ps.tos] = stmt;	/* apply the if(..) stmt ::= stmt  in parse()
74 	if (ps.p_stack[ps.tos] != decl) {	/* only put one declaration  in parse()
78 	    ps.p_stack[++ps.tos] = decl;  in parse()
79 	    ps.il[ps.tos] = ps.i_l_follow;  in parse()
84 		for (i = ps.tos - 1; i > 0; --i)  in parse()
94 	if (ps.p_stack[ps.tos] == elsehead && opt.else_if) /* "else if ..." */  in parse()
100 		ps.i_l_follow = ps.il[ps.tos--];  in parse()
105 	ps.p_stack[++ps.tos] = tk;  in parse()
106 	ps.il[ps.tos] = ps.ind_level = ps.i_l_follow;  in parse()
113 	if (ps.p_stack[ps.tos] == stmt || ps.p_stack[ps.tos] == decl  in parse()
114 		|| ps.p_stack[ps.tos] == stmtl)  in parse()
126 		if (ps.p_stack[ps.tos] == swstmt && opt.case_indent >= 1)  in parse()
134 	ps.p_stack[++ps.tos] = lbrace;  in parse()
135 	ps.il[ps.tos] = ps.ind_level;  in parse()
136 	ps.p_stack[++ps.tos] = stmt;  in parse()
138 	ps.il[ps.tos] = ps.i_l_follow;  in parse()
142 	if (ps.p_stack[ps.tos] == dohead) {  in parse()
144 	    ps.ind_level = ps.i_l_follow = ps.il[ps.tos];  in parse()
145 	    ps.p_stack[++ps.tos] = whilestmt;  in parse()
146 	    ps.il[ps.tos] = ps.ind_level = ps.i_l_follow;  in parse()
149 	    ps.p_stack[++ps.tos] = whilestmt;  in parse()
150 	    ps.il[ps.tos] = ps.i_l_follow;  in parse()
159 	if (ps.p_stack[ps.tos] != ifhead)  in parse()
162 	    ps.ind_level = ps.il[ps.tos];	/* indentation for else should  in parse()
166 	    ps.p_stack[ps.tos] = elsehead;  in parse()
174 	if (ps.tos > 0 && ps.p_stack[ps.tos - 1] == lbrace) {  in parse()
175 	    ps.ind_level = ps.i_l_follow = ps.il[--ps.tos];  in parse()
176 	    ps.p_stack[ps.tos] = stmt;  in parse()
183 	ps.p_stack[++ps.tos] = swstmt;  in parse()
184 	ps.cstk[ps.tos] = case_ind;  in parse()
186 	ps.il[ps.tos] = ps.i_l_follow;  in parse()
198 	ps.p_stack[++ps.tos] = stmt;  in parse()
199 	ps.il[ps.tos] = ps.ind_level;  in parse()
209     if (ps.tos >= STACKSIZE - 1)  in parse()
215     for (i = 1; i <= ps.tos; ++i)  in parse()
270 	switch (ps.p_stack[ps.tos]) {  in reduce()
273 	    switch (ps.p_stack[ps.tos - 1]) {  in reduce()
278 		ps.p_stack[--ps.tos] = stmtl;  in reduce()
282 		ps.p_stack[--ps.tos] = dohead;  in reduce()
283 		ps.i_l_follow = ps.il[ps.tos];  in reduce()
288 		ps.p_stack[--ps.tos] = ifhead;  in reduce()
289 		for (i = ps.tos - 1;  in reduce()
308 		case_ind = ps.cstk[ps.tos - 1];  in reduce()
317 		ps.p_stack[--ps.tos] = stmt;  in reduce()
318 		ps.i_l_follow = ps.il[ps.tos];  in reduce()
328 	    if (ps.p_stack[ps.tos - 1] == dohead) {  in reduce()
330 		ps.tos -= 2;  in reduce()