diff -up tcsh-6.17.00/tc.prompt.c.orig tcsh-6.17.00/tc.prompt.c
--- tcsh-6.17.00/tc.prompt.c.orig 2010-06-17 12:40:40.422571577 +0200
+++ tcsh-6.17.00/tc.prompt.c 2010-06-17 12:41:28.628519727 +0200
@@ -526,6 +526,9 @@ tprintf(int what, const Char *fmt, const
int njobs = -1;
struct process *pp;
+ if (!proclist.p_next)
+ njobs++;
+
for (pp = proclist.p_next; pp; pp = pp->p_next)
njobs++;
p = Itoa(njobs, 1, attributes);