Test for missing argument.
Test for missing argument.

starius/luarocks,xpol/luarocks,robooo/luarocks,aryajur/luarocks,xiaq/luarocks,xpol/luavm,robooo/luarocks,leafo/luarocks,xpol/luarocks,ignacio/luarocks,tst2005/luarocks,xpol/luavm,coderstudy/luarocks,ignacio/luarocks,luarocks/luarocks,keplerproject/luarocks,leafo/luarocks,xiaq/luarocks,rrthomas/luarocks,keplerproject/luarocks,tst2005/luarocks,leafo/luarocks,xiaq/luarocks,lxbgit/luarocks,aryajur/luarocks,keplerproject/luarocks,xpol/luavm,rrthomas/luarocks,xpol/luarocks,rrthomas/luarocks,luarocks/luarocks,robooo/luarocks,coderstudy/luarocks,usstwxy/luarocks,xiaq/luarocks,coderstudy/luarocks,xpol/luainstaller,xpol/luavm,starius/luarocks,aryajur/luarocks,lxbgit/luarocks,rrthomas/luarocks,usstwxy/luarocks,usstwxy/luarocks,tarantool/luarocks,tst2005/luarocks,tarantool/luarocks,lxbgit/luarocks,robooo/luarocks,lxbgit/luarocks,xpol/luainstaller,coderstudy/luarocks,xpol/luavm,ignacio/luarocks,tarantool/luarocks,tst2005/luarocks,starius/luarocks,ignacio/luarocks,xpol/luainstaller,keplerproject/luarocks,starius/luarocks,usstwxy/luarocks,xpol/luainstaller,luarocks/luarocks,xpol/luarocks,aryajur/luarocks