Re: Multiple header sources for an index.header query prefix?

[Keith Amidon <camalot@picnicpark.org>]

On 8/5/21 3:44 AM, David Bremner wrote
>> I started thinking about how I would add this feature and was thinking
>> it might be better to support in the configuration by using semi-colon
>> separated values like some of the other config options. For example:
>>
>> [index]
>> header.Spam=X-Spam;X-Spam-Result
>>
>> Does this seem a reasonable way to go? Is this an extension of the
>> custom header indexing behavior that you would be interested in?
> It sounds reasonable.
>
>> Finally, any suggestions for approaching an implementation? In
>> particular, I believe there were some recent changes to also store the
>> configuration in the database. Any thoughts on how this suggestion would
>> interact with that?
> An implementation would need to update
> _notmuch_message_index_user_headers to iterate (using
> notmuch_config_get_values_string) over the desired headers. Basically
> the call to `_notmuch_message_gen_terms` needs to be repeated once for
> each header, using the same value for `prefix_name`.
>
> And of course the tests and notmuch-search-terms(7) would need to be
> updated.

Thanks for the encouragement and suggestions. The time it has taken me 
to respond to this thread is a fairly accurate indication of the amount 
of time I have to work on this right now, but it is something that I'd 
definitely would find useful so I'll plug away on it when I can make 
time and update the list when I hopefully get something working.

Thanks again, Keith