State_info
State_info state_info;
push_state_(State_info *si, Lex_state *old_end)
pop_state_(State_info *si, Lex_state *old_end)
typedef struct State_info State_info;
static Lex_state *push_state_(State_info *, Lex_state *);
static Lex_state *pop_state_(State_info *, Lex_state *);