Minor fixes

log/format.go

@@ -75,7 +75,7 @@ func (f Formatter) Format(ctx context.Context, level Level, tag string, message
 	default:
 		message = levelString + "[" + xd(int(timestamp.Sub(f.BaseTime)/time.Second), 4) + "] " + message
 	}
-	return message
+	return message + "\n"
 }
 
 func (f Formatter) FormatWithSimple(ctx context.Context, level Level, tag string, message string, timestamp time.Time) (string, string) {
@@ -126,6 +126,8 @@ func (f Formatter) FormatWithSimple(ctx context.Context, level Level, tag string
 		} else {
 			message = F.ToString("[", id, "] ", message)
 		}
+		messageSimple = F.ToString("[", id, "] ", messageSimple)
+
 	}
 	switch {
 	case f.DisableTimestamp:
@@ -135,7 +137,7 @@ func (f Formatter) FormatWithSimple(ctx context.Context, level Level, tag string
 	default:
 		message = levelString + "[" + xd(int(timestamp.Sub(f.BaseTime)/time.Second), 4) + "] " + message
 	}
-	return message, messageSimple
+	return message + "\n", messageSimple
 }
 
 func xd(value int, x int) string {

log/nop.go

@@ -1,12 +1,17 @@
 package log
 
-import "context"
+import (
+	"context"
+	"os"
 
-var _ Factory = (*nopFactory)(nil)
+	"github.com/sagernet/sing/common/observable"
+)
+
+var _ ObservableFactory = (*nopFactory)(nil)
 
 type nopFactory struct{}
 
-func NewNOPFactory() Factory {
+func NewNOPFactory() ObservableFactory {
 	return (*nopFactory)(nil)
 }
 
@@ -66,3 +71,10 @@ func (f *nopFactory) FatalContext(ctx context.Context, args ...any) {
 
 func (f *nopFactory) PanicContext(ctx context.Context, args ...any) {
 }
+
+func (f *nopFactory) Subscribe() (subscription observable.Subscription[Entry], done <-chan struct{}, err error) {
+	return nil, nil, os.ErrInvalid
+}
+
+func (f *nopFactory) UnSubscribe(subscription observable.Subscription[Entry]) {
+}

log/observable.go

@@ -71,7 +71,6 @@ func (l *observableLogger) Log(ctx context.Context, level Level, args []any) {
 		panic(message)
 	}
 	l.writer.Write([]byte(message))
-	l.writer.Write([]byte{'\n'})
 	if level == LevelFatal {
 		os.Exit(1)
 	}