Detect and warn when user sends likely passwords

It would be nice if Discord could guess at when the user has entered a password (e.g. by having the Discord window erroneously focused). It probably wouldn't be possible to detect very weak, word-like passwords, but if the entire message is a gibberish string of a certain typical length (and not a URL) it might be practical to spot client-side and offer a message like "It appears that you've typed a password. Are you sure you want to send this message?"