There appears to be a redundancy in the description of the "disown"
builtin in bash(1). Version is 4.2.
disown [-ar] [-h] [jobspec ...]
[...] If jobspec is not
present, and neither -a nor -r is supplied,
the shell's notion of the current job is used.
[...] If no jobspec is present,
and neither the -a nor the -r option is sup‐
plied, the current job is used.
Here's a patch to remove one of the instances.
$ diff -u bash.1_ORIG bash.1
--- bash.1_ORIG 2013-08-21 19:12:47.857956352 +0200
+++ bash.1 2013-08-21 19:13:58.541953745 +0200
@@ -7307,13 +7307,6 @@
.BR SIGHUP .
If no
.I jobspec
-is present, and neither the
-.B \-a
-nor the
-.B \-r
-option is supplied, the \fIcurrent job\fP is used.
-If no
-.I jobspec
is supplied, the
.B \-a
option means to remove or mark all jobs; the
--
Thomas Hood
