replace Tab with spaces in src/parse.y

src/parse.y

@@ -43,20 +43,20 @@ static void backref_error(parser_state *p, node *n);
 
 typedef unsigned int stack_type;
 
-#define BITSTACK_PUSH(stack, n)	((stack) = ((stack)<<1)|((n)&1))
-#define BITSTACK_POP(stack)	((stack) = (stack) >> 1)
-#define BITSTACK_LEXPOP(stack)	((stack) = ((stack) >> 1) | ((stack) & 1))
-#define BITSTACK_SET_P(stack)	((stack)&1)
-
-#define COND_PUSH(n)	BITSTACK_PUSH(p->cond_stack, (n))
-#define COND_POP()	BITSTACK_POP(p->cond_stack)
-#define COND_LEXPOP()	BITSTACK_LEXPOP(p->cond_stack)
-#define COND_P()	BITSTACK_SET_P(p->cond_stack)
-
-#define CMDARG_PUSH(n)	BITSTACK_PUSH(p->cmdarg_stack, (n))
-#define CMDARG_POP()	BITSTACK_POP(p->cmdarg_stack)
-#define CMDARG_LEXPOP()	BITSTACK_LEXPOP(p->cmdarg_stack)
-#define CMDARG_P()	BITSTACK_SET_P(p->cmdarg_stack)
+#define BITSTACK_PUSH(stack, n) ((stack) = ((stack)<<1)|((n)&1))
+#define BITSTACK_POP(stack)     ((stack) = (stack) >> 1)
+#define BITSTACK_LEXPOP(stack)  ((stack) = ((stack) >> 1) | ((stack) & 1))
+#define BITSTACK_SET_P(stack)   ((stack)&1)
+
+#define COND_PUSH(n)    BITSTACK_PUSH(p->cond_stack, (n))
+#define COND_POP()      BITSTACK_POP(p->cond_stack)
+#define COND_LEXPOP()   BITSTACK_LEXPOP(p->cond_stack)
+#define COND_P()        BITSTACK_SET_P(p->cond_stack)
+
+#define CMDARG_PUSH(n)  BITSTACK_PUSH(p->cmdarg_stack, (n))
+#define CMDARG_POP()    BITSTACK_POP(p->cmdarg_stack)
+#define CMDARG_LEXPOP() BITSTACK_LEXPOP(p->cmdarg_stack)
+#define CMDARG_P()      BITSTACK_SET_P(p->cmdarg_stack)
 
 static mrb_sym
 intern_gen(parser_state *p, const char *s)