From 75c4bee8a321414440204ef9072cf3089f95b476 Mon Sep 17 00:00:00 2001
From: jack1142 <6032823+jack1142@users.noreply.github.com>
Date: Fri, 27 Dec 2019 23:07:43 +0100
Subject: [PATCH] [Core] Tell user that the (local) whitelist/blacklist is
 empty when using a list command. (#3219)

* Update core_commands.py

* Create 3219.bugfix.rst
---
 changelog.d/3219.bugfix.rst  |  1 +
 redbot/core/core_commands.py | 16 ++++++++++++++++
 2 files changed, 17 insertions(+)
 create mode 100644 changelog.d/3219.bugfix.rst

diff --git a/changelog.d/3219.bugfix.rst b/changelog.d/3219.bugfix.rst
new file mode 100644
index 000000000..d8f7c4ce5
--- /dev/null
+++ b/changelog.d/3219.bugfix.rst
@@ -0,0 +1 @@
+Tell user that the (local) whitelist/blacklist is empty when using commands that list whitelisted/blacklisted users/roles.
diff --git a/redbot/core/core_commands.py b/redbot/core/core_commands.py
index a46087059..2fe864c28 100644
--- a/redbot/core/core_commands.py
+++ b/redbot/core/core_commands.py
@@ -1705,6 +1705,10 @@ class Core(commands.Cog, CoreLogic):
         """
         curr_list = await ctx.bot._config.whitelist()
 
+        if not curr_list:
+            await ctx.send("Whitelist is empty.")
+            return
+
         msg = _("Whitelisted Users:")
         for user in curr_list:
             msg += "\n\t- {}".format(user)
@@ -1768,6 +1772,10 @@ class Core(commands.Cog, CoreLogic):
         """
         curr_list = await ctx.bot._config.blacklist()
 
+        if not curr_list:
+            await ctx.send("Blacklist is empty.")
+            return
+
         msg = _("Blacklisted Users:")
         for user in curr_list:
             msg += "\n\t- {}".format(user)
@@ -1838,6 +1846,10 @@ class Core(commands.Cog, CoreLogic):
         """
         curr_list = await ctx.bot._config.guild(ctx.guild).whitelist()
 
+        if not curr_list:
+            await ctx.send("Local whitelist is empty.")
+            return
+
         msg = _("Whitelisted Users and roles:")
         for obj in curr_list:
             msg += "\n\t- {}".format(obj)
@@ -1923,6 +1935,10 @@ class Core(commands.Cog, CoreLogic):
         """
         curr_list = await ctx.bot._config.guild(ctx.guild).blacklist()
 
+        if not curr_list:
+            await ctx.send("Local blacklist is empty.")
+            return
+
         msg = _("Blacklisted Users and Roles:")
         for obj in curr_list:
             msg += "\n\t- {}".format(obj)