From b9db220e8c0bf2d6ff6b3ac1ba8db80cf4fb3b72 Mon Sep 17 00:00:00 2001
From: Olaoluwa Osuntokun <laolu32@gmail.com>
Date: Thu, 23 Aug 2018 19:48:21 -0700
Subject: [PATCH] config: properly show list of sub-systems for show debuglevel

Fixes #1772.
---
 config.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/config.go b/config.go
index 966b88fc6..32a5403da 100644
--- a/config.go
+++ b/config.go
@@ -788,6 +788,12 @@ func loadConfig() (*config, error) {
 		registeredChains.PrimaryChain().String(),
 		normalizeNetwork(activeNetParams.Name))
 
+	// Special show command to list supported subsystems and exit.
+	if cfg.DebugLevel == "show" {
+		fmt.Println("Supported subsystems", supportedSubsystems())
+		os.Exit(0)
+	}
+
 	// Initialize logging at the default logging level.
 	initLogRotator(
 		filepath.Join(cfg.LogDir, defaultLogFilename),