What are subcommands?
Subcommands are a useful way to avoid having long-winded commands to do a particular function inside a cog. For this guide, we will be using the alias cog as an example.
In the alias cog, you can do !alias and it will show a help menu, which is great.
Notice all the options that come after? These are subcommands. They are really useful things, and this guide will show you how to use them.
How to use a subcommand
Pretty simple really. Just do !<maincommand> <subcommand> <arguments>. For example !alias show <arguments> will show what the alias does.
How to add a subcommand to a cog
All you cog creators have probably seen this line of code before, right?
@commands.command()
async def mycommand()
Well, with subcommands, you change it to this:
@commands.group()
async def mycommand()
This tells Red that whenever !mycommand is triggered, it should look out for a subcommand.
To add a subcommand, you would type:
@mycommand.command
async def subcommand()
So when you type !mycommand subcommand, it will execute the code under the subcommand. You can have as many subcommands as you need.