From fc26014bd4e123b44e490619c6aa61238175e8fa Mon Sep 17 00:00:00 2001
From: RobRimmer <rob.rimmer@mclaren.com>
Date: Thu, 3 Feb 2022 14:03:11 +0000
Subject: [PATCH] MsgFunc function added to Event (#406)

Allows lazy evaluation of msg text, only if log level is appropriate.
---
 event.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/event.go b/event.go
index a5f5938..b9fa138 100644
--- a/event.go
+++ b/event.go
@@ -129,6 +129,13 @@ func (e *Event) Msgf(format string, v ...interface{}) {
 	e.msg(fmt.Sprintf(format, v...))
 }
 
+func (e *Event) MsgFunc(createMsg func() string) {
+	if e == nil {
+		return
+	}
+	e.msg(createMsg())
+}
+
 func (e *Event) msg(msg string) {
 	for _, hook := range e.ch {
 		hook.Run(e, e.level, msg)