From 5716cebb0fe31ab9a8bc9dbc1b91d602b3cee22e Mon Sep 17 00:00:00 2001
From: jack1142 <6032823+jack1142@users.noreply.github.com>
Date: Mon, 30 Mar 2020 06:48:51 +0200
Subject: [PATCH] Send error in `[p]alias add` when target command doesn't
 exist (#3710)

---
 redbot/cogs/alias/alias.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/redbot/cogs/alias/alias.py b/redbot/cogs/alias/alias.py
index b1af67d25..68025944d 100644
--- a/redbot/cogs/alias/alias.py
+++ b/redbot/cogs/alias/alias.py
@@ -279,6 +279,13 @@ class Alias(commands.Cog):
                 ).format(name=alias_name)
             )
             return
+
+        given_command_exists = self.bot.get_command(command) is not None
+        if not given_command_exists:
+            await ctx.send(
+                _("You attempted to create a new alias for a command that doesn't exist.")
+            )
+            return
         # endregion
 
         # At this point we know we need to make a new alias