From 5f3d39033ecf74a6e959053548cba436ff9bfb24 Mon Sep 17 00:00:00 2001
From: Hisham Muhammad <hisham@gobolinux.org>
Date: Wed, 4 Mar 2015 16:14:52 -0300
Subject: Don't crash when asking for help on invalid cmd.

---
 src/luarocks/help.lua | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/luarocks/help.lua b/src/luarocks/help.lua
index 0a155509..e6c214ff 100644
--- a/src/luarocks/help.lua
+++ b/src/luarocks/help.lua
@@ -100,7 +100,7 @@ function help.run(...)
       end
    else
       command = command:gsub("-", "_")
-      local cmd = require(commands[command])
+      local cmd = commands[command] and require(commands[command])
       if cmd then
          local arguments = cmd.help_arguments or "<argument>"
          print_banner()
-- 
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