bug#7567: Please add a history variable to read-regexp

[Juri Linkov]

> It's impossible to have it both ways, because the user's intention is a 
> variable
> that cannot easily and always be taken into consideration.  IOW, there are 
> some
> things the programmer can decide when writing the function call that reads 
> input
> (you can use any history var you want, including new ones), but still you 
> cannot
> always know what the user really needs/wants.

Does Icicles provide a way for the user to select and switch
history variables dynamically while the minibuffer is active?
This looks like a possible way to overcome this limitation.