K 10
svn:author
V 3
jlh
K 8
svn:date
V 27
2013-01-14T11:03:13.474504Z
K 7
svn:log
V 246
Allow commands without any additional arguments, as stated in the
manpage.  While here, exit early when there is nothing to do.

PR:            168415
Submitted by:  Zhihao Yuan (initial version)
MFC after:     1 week
Approved by:   kib (mentor)

END