PN_TUPIF          159 syn/syntax-p5.y          (ELSIF e1:ifexpr f:block     { $$ = e = PN_PUSH(PN_TUPIF(e), PN_AST3(MSG, PN_elsif, PN_AST(LIST, PN_TUP(e1)), f)) } )*
PN_TUPIF          160 syn/syntax-p5.y          (ELSE s2:block               { $$ = PN_PUSH(PN_TUPIF(e), PN_AST3(MSG, PN_else, PN_NIL, s2)) } )?
PN_TUPIF          248 syn/syntax-p5.y     | c:call e:expr 		{ $$ = PN_AST(EXPR, PN_PUSH(PN_TUPIF(PN_S(e,0)),
PN_TUPIF          257 syn/syntax-p5.y eatom = e:atom                  { $$ = PN_AST(EXPR, PN_TUPIF(e)) }
PN_TUPIF          290 syn/syntax-p5.y          { PN_SRC(m)->a[1] = PN_SRC(l); $$ = PN_PUSH(PN_TUPIF(v), m) }
PN_TUPIF          292 syn/syntax-p5.y          { $$ = PN_PUSH(PN_TUPIF(v), m) }