On 09/11/2014 11:37 AM, Jim Meyering wrote:
> Would you mind adding a test to trigger that one?

Ordinarily I would have done that already but this -P stuff is so buggy 
and slow that I got discouraged.  (If we keep having trouble with -P I 
may start lobbying to remove it....) Anyway, I gave it a shot with the 
attached further patch.