longlines-auto-wrap: doc string wrong, or bug?

[David Reitter]

This is in a build from the EMACS_BASE_22 branch:

It appears that `longlines-auto-wrap' as a variable can't be set  
directly - at least to no effect. I have to explicitly do (longlines- 
auto-wrap 0) to turn it off.

Is there a reason why this isn't a minor mode so that M-x longlines- 
auto-wrap would toggle?

I got confused about this because the doc string of `longlines-mode'  
explicitly mentions the variable rather than the function (and the  
doc string of the variable doesn't mention it either): "If the  
variable `longlines-auto-wrap' is non-nil, lines are automatically  
wrapped whenever the buffer is changed." This way, the doc string is  
wrong (or this is a genuine bug).

I only figured this out after looking at longlines.el directly. I  
think that's a bit much to ask from an end user.

I found out about this problem when I did a search-replace for ^J^J -- 
> ^J to get rid of empty lines in between paragraphs. Unfortunately,  
this didn't work. Is there a better way to insert a hard newline? I  
tried to yank the hard newlines directly from the buffer into the  
minibuffer when doing M-x search-replace, but that didn't work and  
produced the same effect with longlines-auto-wrap. Is this possible  
at all?