Bug#451565: jed-extra: no Suggests dependency on ispell

[Paul Boekholt]

2007/11/17, Rafael Laboissiere <rafael at debian.org>:
> Yes, the current ispell.sl give cryptic error messages when ispell/aspell is
> not installed :
>
>   * In the *ispell* buffer:
>        execvp of aspell failed!
>
>   * In the echo area:
>        Ispell crashed!
>
> This two messages give the false impression that aspell/isepll was launched
> and crashed.
>
> Paul, could you add a test for the existence of the aspell/spell program in
> start_ispell_process and send the warning message Jörg suggests above?

Testing for the existence of ispell/aspell is not that easy, as the mode
should also work under Windows. I've changed the error message - if it says
"execvp" in the *ispell* buffer, it now says "could not start ispell".