'args' attribute of 'Command.CommandObj' seems not working

[y-young]

Context

• Operating System: Windows 10
• Python Version: 3.8.1
• aiogram version: 2.12.1
• aiohttp version: 3.7.3
• uvloop version (if installed):

Expected Behavior

command.args returns arguments of command

Current Behavior

command.args returns None

Failure Information (for bugs)

It seems the args attribute is not working.

Digging into dispatcher/filters/builtin.py, I found nothing about setting this attribute, but after adding args = text.split()[1] and pass it to the construtor of CommandObj, it seems to work.

I wonder if this is the intended behavior or am I getting it wrong?

I would be glad to open a PR if it's a mistake :)

Steps to Reproduce

@dp.message_handler(commands=['test'])
async def test(message: Message, command: Command.CommandObj):
    print(command, command.args)

Test command: /test abc

Failure Logs

Output: Command.CommandObj(prefix='/', command='test', mention='') None

[darksidecat]

args = text.split()[1]

This can raise IndexError exception when the command has no arguments. Also a command can have multiple arguments, so it makes sense to use a slice to handle such cases.
args = text.split()[1:]

[y-young]

args = text.split()[1]

This can raise IndexError exception when the command has no arguments. Also a command can have multiple arguments, so it makes sense to use a slice to handle such cases.
args = text.split()[1:]

Yes that's a mistake.
So is this a bug or an intended behavior?

[darksidecat]

So is this a bug or an intended behavior?

Looks like a bug. I think you can be free to make pull request.
@evgfilim1 WDYT?