Re: Commiting changes onto more than one branch

Suppose that I checkout the v3 branch, and fix the bug by editing
several different files.  (Lets assume for now that the files in
question have not diverged between any of the 3 branches, even though
tons of other files have changed).  How do I commit the bugfix into
all of v3, v4 and v5?  Clearly, merging the branches together would be
bad.  So I think what I should do is perform 3 different commits, but
I'm not quite sure how to juggle the git index (or stash or whatever)
to accomplish this.  This may be a really obvious question, but I'm a
confused git newbie.

It as not as clear for me why you think merge will be bad?
If you commit your changes to the v3, then merging to v4 and v5 (which
are not changed) should be very simple fast forward merge. Which means
just move the pointer to the last commit from v3

Am i missing something?

Thanks,
Eugene