Query on git commit amend

Hello,

Suppose i want to add few new changes to my last commit (HEAD). The way i do it is $ git add all_changed_files $ git commit --amend

OR $ git commit --amend -a

With both these ways, i get a screen to edit the message too.

I want to know if there is a way to skip this screen.

i.e. $ git commit --amend -a -some_other_option

which simply adds new changes to existing commit, without asking to change message.

If there is no such way, then can we add a patch for this, if it looks a valid case.