do not append : after struct field or map key in call syntax

Author: lukaszsamson

apps/language_server/lib/language_server/providers/completion.ex

@@ -313,11 +313,21 @@ defmodule ElixirLS.LanguageServer.Providers.Completion do
     }
   end
 
-  defp from_completion_item(%{type: :field, name: name, origin: origin}, _context) do
+  defp from_completion_item(
+         %{type: :field, subtype: subtype, name: name, origin: origin, call?: call?},
+         _context
+       ) do
+    detail =
+      case {subtype, origin} do
+        {:map_key, _} -> "map key"
+        {:struct_field, nil} -> "struct field"
+        {:struct_field, module_name} -> "#{module_name} struct field"
+      end
+
     %__MODULE__{
       label: to_string(name),
-      detail: "#{origin} struct field",
-      insert_text: "#{name}: ",
+      detail: detail,
+      insert_text: if(call?, do: name, else: "#{name}: "),
       priority: 0,
       kind: :field,
       tags: []