[Fix #493] Rotate nREPL connection handles no nREPL connection.

[jonpither]

Fixes #493

[jonpither]

Perhaps at some stage:

if (not (cider-connected-p)) (message "No active nREPL connection.")

Could be pulled out into a macro as it's used frequently.

[bbatsov]

Seems to me you forgot something here :-)

[bbatsov]

I don't think a macro is required. A simple function like this should do:

(defun cider-ensure-connected ()
   (unless (cider-connected-p)
     (error "No active nREPL connection")))

error will halt the execution of subsequent forms.

[jonpither]

The changelog I'll fix :-)

I'll use the fn you suggest and use it in the other locations where cider-connected-p is checked.

[jonpither]

Changes made. I could edit to commit msg to read "and introducing cider-ensure-connected" if you want.

[bbatsov]

Yep, that'd be nice. Alternatively you can have this split into two commits, as they are unrelated.

[jonpither]

I changed the commit msg :-)

[bbatsov]

Thanks!