Description of problem:

I made a yum call with a typo:

yum upodate kernel --enablerepo=updates-testing (I meant ... update ...)

It seems yum does a lot of not useful things before it sees the syntax error:

yum upodate kernel --enablerepo=updates-testing
Loaded plugins: langpacks, presto, refresh-packagekit
------ begin of my comment: this part not needed!!!!!!!!!!!!!!!!!!!!!-----------
updates-testing/metalink                                 |  18 kB     00:00     
updates-testing                                          | 4.7 kB     00:00     
updates-testing/primary_db                               | 1.5 MB     00:01     
updates-testing/group_gz                                 | 431 kB     00:00
------ end of my comment: this part not needed!!!!!!!!!!!!!!!!!!!!!-------     
No such command: upodate. Please use /usr/bin/yum --help


Version-Release number of selected component (if applicable):
------ my comment: not needed!!!!!!!!!!!!!!!!!!!!!-----------

How reproducible:
always

Steps to Reproduce:
1.enter a yum cmd with a syntactically wrong subcommand
2.
3.
  
Actual results:
No immediate syntax check

Expected results:
immediate syntax check

Additional info: