util.argparse: Move exiting and error to util.startup It's not so nice to have a library that exits the entire application from under you, so this and the error reporting belongs in util.startup. The argparse code was originally in util.startup but moved out in 1196f1e8d178 but the error handling should have stayed.

author: Kim Alvefur <zash@zash.se>
date: Wed, 17 Jun 2020 19:32:12 +0200
parent: 10651:1196f1e8d178
child: 11846:6425dfa3de45
--- a/util/argparse.lua	Mon Jun 15 14:23:47 2020 +0100
+++ b/util/argparse.lua	Wed Jun 17 19:32:12 2020 +0200
@@ -26,17 +26,14 @@
 		end
 
 		if not param then
-			print("Unknown command-line option: "..tostring(param));
-			print("Perhaps you meant to use prosodyctl instead?");
-			os.exit(1);
+			return nil, "param-not-found", param;
 		end
 
 		local param_k, param_v;
 		if value_params[param] then
 			param_k, param_v = param, table.remove(arg, 1);
 			if not param_v then
-				print("Expected a value to follow command-line option: "..raw_param);
-				os.exit(1);
+				return nil, "missing-value", raw_param;
 			end
 		else
 			param_k, param_v = param:match("^([^=]+)=(.+)$");