fix a compiler bug of `[]`

src/compiler.cpp

@@ -392,6 +392,7 @@ namespace pkpy{
         // a[<0> <state:1> : state<3> : state<5>]
         int state = 0;
         do{
+            match_newlines_repl();
             switch(state){
                 case 0:
                     if(match(TK(":"))){
@@ -439,6 +440,7 @@ namespace pkpy{
                     break;
                 case 5: consume(TK("]")); goto __SUBSCR_END;
             }
+            match_newlines_repl();
         }while(true);
 __SUBSCR_END:
         if(is_slice){

tests/05_list.py

@@ -83,4 +83,15 @@ assert b == [1, 2, 3, 4, 5]
 
 a = []
 b = [*a, 1, 2, 3, *a, *a]
-assert b == [1, 2, 3]
+assert b == [1, 2, 3]
+
+assert b[
+    1
+] == 2
+
+assert b[0
+] == 1
+
+assert b[0] == 1
+assert b[
+    0] == 1