Swinging in a different direction, different syntax

lang.h

@@ -41,7 +41,7 @@ typedef struct String{
   S64 len;
 }String;
 
-#define SLLQueuePush(f,l,n) do{\
+#define SLLQueuePushMod(f,l,n,next) do{\
 if((f)==0){\
 (f)=(l)=(n);\
 }\
@@ -50,6 +50,8 @@ else{\
 } \
 }while(0)
 
+#define SLLQueuePush(f,l,n) SLLQueuePushMod(f,l,n,next)
+
 
 #define SLLStackPush(l,n) do{\
 (n)->next = (l);\