fix(dap): nil error on rust-analyzer debugSingle/debuggables last

CHANGELOG.md

@@ -6,6 +6,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [3.16.2] - 2024-01-19
+
+### Fixed
+
+- DAP: `nil` error when executing `rust-analyzer.debugSingle`
+  or `:RustLsp debuggables last` commands (introduced in 3.16.0).
+
 ## [3.16.1] - 2024-01-17
 
 ### Fixed

lua/rustaceanvim/dap.lua

@@ -225,9 +225,15 @@ local function handle_configured_options(adapter, args)
 end
 
 ---@param args RADebuggableArgs
----@param verbose boolean
----@param callback fun(config: DapClientConfig)
+---@param verbose? boolean
+---@param callback? fun(config: DapClientConfig)
 function M.start(args, verbose, callback)
+  if verbose == nil then
+    verbose = true
+  end
+  if type(callback) ~= 'function' then
+    callback = dap.run
+  end
   local adapter = types.evaluate(config.dap.adapter)
   --- @cast adapter DapExecutableConfig | DapServerConfig | disable
   if adapter == false then