Some instances of bash change the command history when you re-use and edit a previous command, others apparently don't. I've been searching and searching but can't find anything that says how to prevent commands in the history from being modified when they're reused and edited.
There are questions like this one, but that seems to say how to cope with the history being edited. I've only recently come across an instance of bash that does edit the history when you reuse a command - all previous bash shells I've used have (as far as I've noticed) been configured not to change the history when you reuse and edit a command. (Perhaps I've just not been paying proper attention to my shell history for the past 15 years or so...)
So that's probably the best question: CAN I tell bash NEVER to modify the history - and if so, how?