You'll need to look at using tk::bindtags to alter the order of evaluation for the bindings. I got it to work once, but it was mighty confusing. I'll look it out if you have as much trouble understanding the docs as I did?
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
Lingua non convalesco, consenesco et abolesco. -- Rule 1 has a caveat! -- Who broke the cabal?
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.