Fix non unicode encoding

utils/tree_utils.py

@@ -13,7 +13,7 @@ def replace_function(old_func_node, new_func_node):
     tree = give_tree(old_func_node)
     old_func_start, old_func_end = node_str_idx(old_func_node)
     # new_func_start, new_func_end = node_str_idx(new_func_node)
-    new_code = tree.text.decode()[:old_func_start] + new_func_node.text.decode() + tree.text.decode()[old_func_end:]
+    new_code = tree.text[:old_func_start].decode() + new_func_node.text.decode() + tree.text[old_func_end:].decode()
     return new_code
 
 def get_root(node):
@@ -47,7 +47,7 @@ def parse_functions(in_code):
     returns all functions in the code as their actual nodes.
     includes any comment made directly after the function definition or diretly after #copilot trigger
     """
-    tree = parser.parse(bytes(in_code, "utf8"))
+    tree = parser.parse(bytes(in_code, encoding="utf-8"))
     funcs = [n for n in tree.root_node.children if n.type == "function_definition"]
 
     return funcs
@@ -81,7 +81,7 @@ def full_func_head(func_node) -> str:
         cursor.goto_next_sibling()
     end = cursor.node.start_point
     # return "\n".join(func_node.text.decode().split("\n")[:(end[0]-func_node.start_point[0])])[:-(last_char)-1]
-    return func_node.text.decode()[:(last_char - func_node.start_byte)]
+    return func_node.text[:(last_char - func_node.start_byte)].decode()
 
 def grab_before_comments(func_node):
     """