fix: default to item when assigning defaults, only use known defaults

closes #151

Author: Saghen

lua/blink/cmp/sources/lsp.lua

@@ -111,10 +111,17 @@ function lsp:get_completions(context, callback)
       -- convert full response to our internal format
       else
         local defaults = response.result and response.result.itemDefaults or {}
+        -- TODO: excluding editRange for now
+        local known_defaults = {
+          'commitCharacters',
+          'insertTextFormat',
+          'insertTextMode',
+          'data',
+        }
         for _, item in ipairs(response.result.items) do
           -- add defaults to the item
           for key, value in pairs(defaults) do
-            item[key] = value
+            if vim.tbl_contains(known_defaults, key) then item[key] = item[key] or value end
           end
         end