feat: change the lsp buffer naming and improve prompt

lua/chatgpt_nvim/tools/lsp_robust_diagnostics.lua

@@ -21,20 +21,28 @@ local function guess_filetype(path)
 end
 
 local function create_scratch_buffer(path, content)
+  -- Create a unique buffer name so we never clash with an existing one
+  local scratch_name = string.format("chatgpt-scratch://%s#%d", path, math.random(100000, 999999))
+
   local bufnr = api.nvim_create_buf(false, true)
   if bufnr == 0 then
     return nil
   end
 
-  api.nvim_buf_set_name(bufnr, path)
+  -- Assign the unique name to the buffer
+  api.nvim_buf_set_name(bufnr, scratch_name)
 
+  -- Convert content string to lines
   local lines = {}
   for line in (content.."\n"):gmatch("(.-)\n") do
     table.insert(lines, line)
   end
   api.nvim_buf_set_lines(bufnr, 0, -1, false, lines)
+
+  -- Mark it as a scratch buffer
   api.nvim_buf_set_option(bufnr, "bufhidden", "wipe")
   api.nvim_buf_set_option(bufnr, "swapfile", false)
+
   return bufnr
 end
 
@@ -61,7 +69,9 @@ local function send_did_open(bufnr, client_id, path, filetype)
   if not client then
     return "Invalid client ID."
   end
+
   local text = table.concat(api.nvim_buf_get_lines(bufnr, 0, -1, false), "\n")
+  -- Even though the buffer name is unique, the LSP server sees this file as if at 'path'
   local uri = vim.uri_from_fname(path)
 
   local didOpenParams = {
@@ -72,7 +82,6 @@ local function send_did_open(bufnr, client_id, path, filetype)
       text = text,
     }
   }
-
   client.rpc.notify("textDocument/didOpen", didOpenParams)
   return nil
 end
@@ -145,22 +154,23 @@ function M.lsp_check_file_content(path, new_content, timeout_ms)
 
   local client_id, err = attach_existing_lsp_client(bufnr, filetype)
   if not client_id then
-    vim.api.nvim_buf_delete(bufnr, { force = true })
+    api.nvim_buf_delete(bufnr, { force = true })
     return "(LSP) " .. (err or "No suitable LSP client.")
   end
 
   local err2 = send_did_open(bufnr, client_id, path, filetype)
   if err2 then
-    vim.api.nvim_buf_delete(bufnr, { force = true })
+    api.nvim_buf_delete(bufnr, { force = true })
     return "(LSP) " .. err2
   end
 
+  -- Optionally do a didChange
   send_did_change(bufnr, client_id)
 
   local diags = wait_for_diagnostics(bufnr, timeout_ms or 2000)
   local diag_str = diagnostics_to_string(diags)
 
-  vim.api.nvim_buf_delete(bufnr, { force = true })
+  api.nvim_buf_delete(bufnr, { force = true })
   return diag_str
 end