setting INTERACTIVITY back to "not set"?

(Amanda 3.5 [with override-error.diff and amgetconf-list.diff applied])

I have the global INTERACTIVITY parameter set to "inter_tty_email" in my
amanda.conf, but I've found that sometimes I would like to set it back
to "not set" status, either temporarily in an "-o" override (for a
command that does not have a --no-interactivity option) or permanently
for a specific storage (i.e. using the INTERACTIVITY parameter within
the DEFINE STORAGE section to override the global setting).

However, I'm not able to set the parameter to the "" string:
=====
# su backup -c 'amcheck -s TestBackup -ostorage=TestOffsite  -ointeractivity=""' 
argument '""': Unknown interactivity named: 
ERROR: errors processing config file
=====

So, I was wondering if it would be reasonable to add "" as a special
case to un-set the existing interactivity parameter value (in the
current scope)?

(Some value other than "" could certainly be used instead, but  "amadmin
TestBackup config" displays:
  INTERACTIVITY         ""
when the parameter is not set, and it seems useful to have the two
support the same value.)


						Nathan
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Nathan Stratton Treadway  -  [email protected]  -  Mid-Atlantic region
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