Back in February Adam Lopresto asked the same question, but as far as I can
see noone responded.  He wrote:

|Using MISSING_DATE as a reference, I can check for an empty subject
|
|header NO_SUBJECT Subject =~ /^UNSET$/ [if-unset: UNSET]
|
|But what is the best way to check for a completely empty body?

I'm interested in that too and thought this might work, but probably not:
 body /^\n*$/s

Any suggestions?  Thanks for any hint or pointer,
 Andy.

-- 
                              o      _     _         _
  ------- __o       __o      /\_   _ \\o  (_)\__/o  (_)          -o)
  ----- _`\<,_    _`\<,_    _>(_) (_)/<_    \_| \   _|/' \/       /\\
  ---- (_)/ (_)  (_)/ (_)  (_)        (_)   (_)    (_)'  _\o_    _\_v
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 I believe five out of four people have trouble with fractions.

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