diff --git a/lua/chatgpt_nvim/init.lua b/lua/chatgpt_nvim/init.lua
index 0b10f51..f209443 100644
--- a/lua/chatgpt_nvim/init.lua
+++ b/lua/chatgpt_nvim/init.lua
@@ -173,8 +173,8 @@ local function build_prompt(user_input, dirs, conf)
   table.insert(final_sections, table.concat(env_lines, "\n"))
 
   local final_prompt = table.concat(final_sections, "\n\n")
-  -- Replace placeholder "chatgpt.vim" with the actual project name from configuration
-  final_prompt = final_prompt:gsub("%chatgpt.vim%", conf.project_name)
+  -- Replace placeholder "%PROJECT_NAME%" with the actual project name from configuration
+  final_prompt = final_prompt:gsub("%%PROJECT_NAME%%", conf.project_name)
   return final_prompt
 end
 
@@ -453,8 +453,13 @@ local function run_chatgpt_current_buffer_command()
 end
 
 ------------------------------------------------------------------------------
--- GLOBAL FILE COMPLETION FUNCTION
+-- PUBLIC API
 ------------------------------------------------------------------------------
+M.run_chatgpt_command = run_chatgpt_command
+M.run_chatgpt_paste_command = run_chatgpt_paste_command
+M.run_chatgpt_current_buffer_command = run_chatgpt_current_buffer_command
+
+-- New: Global function for file name auto-completion in ChatGPT prompt
 function _G.chatgpt_file_complete(findstart, base)
   if findstart == 1 then
     local line = vim.fn.getline('.')
@@ -469,8 +474,9 @@ function _G.chatgpt_file_complete(findstart, base)
     local conf = config.load()
     local files = context.get_project_files({'.'}, conf)
     local completions = {}
+    local esc_base = base:gsub("([^%w])", "%%%1")
     for _, f in ipairs(files) do
-      if f:find(base, 1, true) then
+      if f:match("^" .. esc_base) then
         table.insert(completions, f)
       end
     end