feat(completion): make it work with vim_complete

Author: sudo-tee

lua/opencode/ui/completion/engines/vim_complete.lua

@@ -30,13 +30,17 @@ function M._get_trigger(before_cursor)
   local config = require('opencode.config')
   local mention_key = config.get_key_for_function('input_window', 'mention')
   local slash_key = config.get_key_for_function('input_window', 'slash_commands')
+  local context_key = config.get_key_for_function('input_window', 'context_items')
   local triggers = {}
   if mention_key then
     table.insert(triggers, mention_key)
   end
   if slash_key then
     table.insert(triggers, slash_key)
   end
+  if context_key then
+    table.insert(triggers, context_key)
+  end
   local trigger_chars = table.concat(vim.tbl_map(vim.pesc, triggers), '')
   local trigger_char, trigger_match = before_cursor:match('.*([' .. trigger_chars .. '])([%w_%-%.]*)')
   return trigger_char, trigger_match
@@ -88,8 +92,8 @@ function M._update()
         item.insert_text = item.insert_text:sub(2)
       end
       table.insert(items, {
-        word = item.insert_text,
-        abbr = item.label,
+        word = #item.insert_text > 0 and item.insert_text or item.label,
+        abbr = (item.kind_icon or '') .. item.label,
         menu = source.name,
         kind = item.kind:sub(1, 1):upper(),
         user_data = item,