changed regression/log to use logger.SetEcho()

this seems clearer and less prone to error than WriteRecent()

Author: JetSetIlly

regression/log.go

@@ -126,6 +126,11 @@ func (reg *LogRegression) regress(newRegression bool, output io.Writer, msg stri
 	// make sure logger is clear
 	logger.Clear()
 
+	// echoing log output to buffer
+	logOutput := &strings.Builder{}
+	logger.SetEcho(logOutput, false)
+
+	// start output with message
 	output.Write([]byte(msg))
 
 	// create headless television. we'll use this to initialise the digester
@@ -161,9 +166,6 @@ func (reg *LogRegression) regress(newRegression bool, output io.Writer, msg stri
 	dur, _ := time.ParseDuration("1s")
 	tck := time.NewTicker(dur)
 
-	// writing log output to buffer
-	logOutput := &strings.Builder{}
-
 	// run emulation
 	err = vcs.RunForFrameCount(reg.NumFrames, func() (govern.State, error) {
 		// if the CPU is in the KIL state then the test will never end normally
@@ -179,8 +181,6 @@ func (reg *LogRegression) regress(newRegression bool, output io.Writer, msg stri
 		default:
 		}
 
-		logger.WriteRecent(logOutput)
-
 		return govern.Running, nil
 	})