Temporary commit block on a file

Is it possible to temporarily block a file from being committed.

Here is what I need:
The file in question is one that hold valuable system properties.
I modify this file to debug a specific issue.
(Make a mental note to revert this file before I commit).

Unfortunately, my mental notes aren't enforced properly. More likely
than not, I would end up committing this file, and later on (who know
if ever), I will have to revert my changes (sigh)

I need a way to force-break a commit, in case I commit this file. One
possible way could be to put something in comments that would flag the
inappropriateness of the commit, when svn looks at it...

Am I making any sense here?

Is this possible ? (I spent a few minutes on google and couldn't find
anything useful)

All help would be highly appreciated.

Thanks

Ajay

-- 
Talk is cheap, show me the code.
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