lightningd: pass all log lines to warning notifiers.

It would be wrong to omit those prior to the last, and I want to see
what test this was supposedly breaking...

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

Author: rustyrussell

lightningd/plugin.c

@@ -525,12 +525,8 @@ static const char *plugin_log_handle(struct plugin *plugin,
 		lines = tal_strsplit(tmpctx, log_msg, "\n", STR_EMPTY_OK);
 
 		for (size_t i = 0; lines[i]; i++) {
-			bool call_notifier2 = call_notifier;
-			/* Call notifier only for the last message to avoid Python errors. */
-			if (lines[i+1] != NULL)
-				call_notifier2 = false;
 			/* FIXME: Let plugin specify node_id? */
-			log_(plugin->log, level, NULL, call_notifier2, "%s", lines[i]);
+			log_(plugin->log, level, NULL, call_notifier, "%s", lines[i]);
 		}
 	} else {
 		log_(plugin->log, level, NULL, call_notifier, "%.*s",

tests/test_plugin.py

@@ -1256,7 +1256,7 @@ def test_htlc_accepted_hook_forward_restart(node_factory, executor):
 def test_warning_notification(node_factory):
     """ test 'warning' notifications
     """
-    l1 = node_factory.get_node(options={'plugin': os.path.join(os.getcwd(), 'tests/plugins/pretend_badlog.py')}, broken_log=r'Test warning notification\(for broken event\)')
+    l1 = node_factory.get_node(options={'plugin': os.path.join(os.getcwd(), 'tests/plugins/pretend_badlog.py')}, broken_log=r'Test warning notification\(for broken event\)|LINE[12]')
 
     # 1. test 'warn' level
     event = "Test warning notification(for unusual event)"
@@ -1283,6 +1283,15 @@ def test_warning_notification(node_factory):
     l1.daemon.wait_for_log('plugin-pretend_badlog.py: source: plugin-pretend_badlog.py')
     l1.daemon.wait_for_log('plugin-pretend_badlog.py: log: Test warning notification\\(for broken event\\)')
 
+    # Test linesplitting while we're here
+    l1.rpc.call('pretendbad', {'event': 'LINE1\nLINE2', 'level': 'error'})
+    l1.daemon.wait_for_log(r'\*\*BROKEN\*\* plugin-pretend_badlog.py: LINE1')
+    l1.daemon.wait_for_log(r'\*\*BROKEN\*\* plugin-pretend_badlog.py: LINE2')
+    l1.daemon.wait_for_log('plugin-pretend_badlog.py: Received warning')
+    l1.daemon.wait_for_log('plugin-pretend_badlog.py: log: LINE1')
+    l1.daemon.wait_for_log('plugin-pretend_badlog.py: Received warning')
+    l1.daemon.wait_for_log('plugin-pretend_badlog.py: log: LINE2')
+
 
 def test_invoice_payment_notification(node_factory):
     """