Is there a concise way to specify "if X is not present or is just
white space?" in one's replcomps?
We covered this ground a few years ago, here:
http://lists.nongnu.org/archive/html/nmh-workers/2015-02/msg00139.html
Priescently, I said back then:
Mind you, a header consisting of nothing but white space will be read
as "true" in the sense of mh-format(5) tests
And just to be sure:
% fmttest -raw -format '%<(nonnull{text})Non-null%|Null%>' ''
Null
% fmttest -raw -format '%<(nonnull{text})Non-null%|Null%>' ' '
Non-null
But I see:
% fmttest -raw -format '%(trim{text})%<(nonnull)Non-null%|Null%>' ' '
Null
So Ralph was right, %(trim) does what you want. But ... %(trim) does
not have a return value (that was probably a mistake), so you cannot use
it directly as a condition for %<. You'll have to make sure your first
test is against the str register rather than Reply-To, and making it work
for all components is actually going to be a bit messy.
You know, since this the first one you've encountered in 30 years, maybe
it is better just to let it go?
--Ken
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