Fix prefix not printed when nothing is printed

packages/consoler/example/.gitignore

@@ -0,0 +1,3 @@
+# https://dart.dev/guides/libraries/private-files
+# Created by `dart pub`
+.dart_tool/

packages/consoler/example/CHANGELOG.md

@@ -0,0 +1,3 @@
+## 1.0.0
+
+- Initial version.

packages/consoler/example/README.md

@@ -0,0 +1,2 @@
+A sample command-line application with an entrypoint in `bin/`, library code
+in `lib/`, and example unit test in `test/`.

packages/consoler/example/analysis_options.yaml

@@ -0,0 +1,30 @@
+# This file configures the static analysis results for your project (errors,
+# warnings, and lints).
+#
+# This enables the 'recommended' set of lints from `package:lints`.
+# This set helps identify many issues that may lead to problems when running
+# or consuming Dart code, and enforces writing Dart using a single, idiomatic
+# style and format.
+#
+# If you want a smaller set of lints you can change this to specify
+# 'package:lints/core.yaml'. These are just the most critical lints
+# (the recommended set includes the core lints).
+# The core lints are also what is used by pub.dev for scoring packages.
+
+include: package:lints/recommended.yaml
+
+# Uncomment the following section to specify additional rules.
+
+# linter:
+#   rules:
+#     - camel_case_types
+
+# analyzer:
+#   exclude:
+#     - path/to/excluded/files/**
+
+# For more information about the core and recommended set of lints, see
+# https://dart.dev/go/core-lints
+
+# For additional information about configuring this file, see
+# https://dart.dev/guides/language/analysis-options

packages/consoler/example/bin/example.dart

@@ -0,0 +1,15 @@
+import 'package:consoler/consoler.dart';
+import 'package:example/example.dart';
+
+Future<void> main(List<String> arguments) async {
+  final consoler = Consoler(
+    defaultProgramConfig:
+        DefaultProgramConfiguration(description: 'Consoler example'),
+  );
+  consoler.registerProgram('nothing', NothingProgram());
+  consoler.run();
+  for (var i = 10; i >= 0; i--) {
+    consoler.print('Countdown: $i');
+    await Future.delayed(Duration(seconds: 1));
+  }
+}

packages/consoler/example/lib/example.dart

@@ -0,0 +1,9 @@
+import 'package:consoler/consoler.dart';
+
+class NothingProgram extends ConsoleProgram {
+  @override
+  void run(String label, List<String> args) {}
+
+  @override
+  String? getDescription() => null;
+}

packages/consoler/example/pubspec.yaml

@@ -0,0 +1,18 @@
+name: example
+description: A sample command-line application.
+version: 1.0.0
+publish_to: none
+# repository: https://github.com/my_org/my_repo
+
+environment:
+  sdk: ^3.5.3
+
+# Add regular dependencies here.
+dependencies:
+  consoler:
+    path: ../
+  # path: ^1.8.0
+
+dev_dependencies:
+  lints: ^4.0.0
+  test: ^1.24.0

packages/consoler/lib/src/consoler.dart

@@ -104,5 +104,6 @@ final class Consoler<T extends ConsoleProgram> {
     final command = splitted.firstOrNull;
     (_programs[command] ?? _programs[null])
         ?.run(command ?? '', splitted.isEmpty ? const [] : splitted.sublist(1));
+    sendPrefix();
   }
 }