bug#18444: 24.3.93; Error running timer 'compilation-auto-jump' from grep-mode

[Glenn Morris]

Martin Apel wrote:

> To reproduce the bug, perform the following steps:
> emacs -Q
> Customize compilation-auto-jump-to-first-error to enabled
> M-x rgrep for an arbitrary string in an arbitrary directory
> This results in the following error message:
>
> Error running timer `compilation-auto-jump': (error "No grep hit here")

I think it has never worked, the only thing that is new is that the
error message from the timer is no longer silently discarded.
(Should that be mentioned in NEWS?)