From 95f5a133af6b5b42635f7079b626ac1886eccde2 Mon Sep 17 00:00:00 2001
From: Andrew Thompson <andrew@hijacked.us>
Date: Thu, 22 Jan 2015 21:28:48 +0000
Subject: [PATCH] Fix #163 - start the file backend if it isn't running but a
 trace uses it

---
 src/lager.erl | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/lager.erl b/src/lager.erl
index 7dd59ae..cfae17d 100644
--- a/src/lager.erl
+++ b/src/lager.erl
@@ -184,6 +184,9 @@ trace_console(Filter, Level) ->
 trace(Backend, Filter) ->
     trace(Backend, Filter, debug).
 
+trace({lager_file_backend, File}, Filter, Level) ->
+    trace_file(File, Filter, Level);
+
 trace(Backend, Filter, Level) ->
     Trace0 = {Filter, Level, Backend},
     case lager_util:validate_trace(Trace0) of