white spaces in a patch

Hello,

It occurred to me that I prepared some patch for a git tree, and
then when testing git-apply on it (on the original tree) I saw
some "white spaces" errors.
I know that I can run:
"git --whitespace=fix apply" on my patch and than create the patch
again ; in this way it will be created without white spaces.

Suppose I create a patch file (let's say : patch.txt)
1) Is there a way to check whether there are white spaces in this
file without running git-apply?
2) Is there a way to get some messages about that there are white spaces
when creating a git patch?

Regards,
Mark