SVN: change a past revision and have the change in current

ok say I am on revision 4.

I check it out, make som开发者_如何学JAVAe change and commit it. I am not on revision 5.

I check it out again, am making some changes, but I am informed that there was a typo from revision 5 that needs to be changed right away.

I don't want to fix it in my current working copy because I am in the middle of something and it wont be ready to commit yet. But I don't want to revert back to revision 5 and loose all my work.

what I want to do is go back to revision 5, make the small change, commit it. And ALSO have that change made to my current working copy as well.

I hope that makes sense. Is there a way to do that?

Easy. Check out the source somewhere else, make your small change, do svn commit. Then do svn update in your "main" working copy. This will not change rev. 5 (it's impossible to change anything commited in SVN), but will do what you want.

You can save time by avoiding checking out and just copy the part of your working copy which you want to change into a different directory(outside of your working copy).

checking out is slower than copying