I am unable to determine how eldoc is displaying arguments (or other information) in the mode-line while
eval-expression is reading user input in the minibuffer. I could not find a relevant element in the default value of
mode-line-format and I also did not find any code where eldoc is prepending an element temporarily to the (local?) value of
I need this so that I can change the visual appearance, such as its background color.
Note that I did find the complex machinery that determines what information to display; that's not what I am looking for, I only wonder how that information is displayed, whatever it may be.