setconfig: return False on error

electrum

@@ -288,7 +288,7 @@ def run_cmdline(config):
     if cmd.requires_network and not config.get('offline'):
         s = get_daemon(config, False)
         if not s:
-            print_msg("Network daemon is not running. Try 'electrum daemon start'")
+            print_msg("Network daemon is not running. Try 'electrum daemon start'\nIf you want to run this command offline, use the -o flag.")
             sys.exit(1)
         network = NetworkProxy(s, config)
         network.start()

lib/commands.py

@@ -122,8 +122,8 @@ class Commands:
         try:
             value = ast.literal_eval(value)
         except:
-            pass
-        self.config.set_key(key, value, True)
+            return False
+        self.config.set_key(key, value)
         return True
 
     @command('')