Good grief, well, yes, of course, if you use backslashes to split lines! Obviously rl_redisplay() can only redisplay what's in the current readline buffer, as opposed to prior readline buffers. I'm not convinced this isn't perfectly acceptable, in fact; you can't go back and edit the previous two lines, so I don't see why they should be redisplayed for you in a manner that makes you think you can.

Regardless, this is an entirely separate bug - if the common display mechanism shared between my job notifications and the C-x C-v function is faulty, then report a bug in that :-)

I agree it's not your bug - I was just reporting back after investigating on the conversation from last night.

(I don't usually use backslashes to split lines, but I do quite often break lines in the middle of if then elsif else fi constructs and such-like).