There is:

$ notmuch --version
notmuch 0.5

and

$ notmuch config ...

for querying things from ~/.notmuch-config


It would be great to be able to ask notmuch:
- against what versions of libraries it was compiled,
- what configure flags where used,
- what database format it is using
- whether the database is compacted
- ...

-- 
Florian Friesdorf <flo@chaoflow.net>
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