Fix entry offset calculation

lua/cmp/entry.lua

@@ -34,7 +34,7 @@ entry.new = function(ctx, source, completion_item)
   self.score = 0
   self.context = ctx
   self.source = source
-  self.source_offset = source.offset
+  self.source_offset = source.request_offset
   self.source_insert_range = source:get_default_insert_range()
   self.source_replace_range = source:get_default_replace_range()
   self.completion_item = completion_item

lua/cmp/utils/debug.lua

@@ -1,11 +1,11 @@
 local debug = {}
 
-local flag = false
+debug.flag = false
 
 ---Print log
 ---@vararg any
 debug.log = function(...)
-  if flag then
+  if debug.flag then
     local data = {}
     for _, v in ipairs({ ... }) do
       if not vim.tbl_contains({ 'string', 'number', 'boolean' }, type(v)) then