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From: David Bremner <david@tethera.net>
To: notmuch@notmuchmail.org
Subject: Re: notmuch_query_add_tag_excluded and notmuch_query_search_threads
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Date: Sun, 07 Dec 2014 18:41:17 +0100
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Gaute Hope <eg@gaute.vetsj.com> writes:
>>=20
>
> Ok, that explains it. You are right - I mixed up, the count is correct.
>
> regards, gaute

At the end of this message is a simpler example, that I think
demonstrates a bug. At the very list it's not very nice that the
destructiveness only shows up when excludes are involved.

Here is the output; note the second exclude query!

,----
| =E2=95=AD=E2=94=80 maritornes:~/tmp=20
| =E2=95=B0=E2=94=80% NOTMUCH_DEBUG_QUERY=3D1 ./a.out
| Query string is:
| tag:muted
| Exclude query is:
| Xapian::Query()
| Final query is:
| Xapian::Query((Tmail AND 0 * Kmuted))
| ret1=3D84
| Exclude query is:
| Xapian::Query(<alldocuments>)
| Final query is:
| Xapian::Query(((Tmail AND 0 * Kmuted) AND_NOT <alldocuments>))
| ret2=3D0
`----



#include <notmuch.h>
#include <stdlib.h>
#include <stdio.h>

int main(int argc, char **argv){

  notmuch_database_t *nm_db;
  notmuch_query_t *query;

  if (notmuch_database_open ("/home/bremner/Maildir/",
			     NOTMUCH_DATABASE_MODE_READ_ONLY, &nm_db))
    return 1;

  query =3D notmuch_query_create (nm_db, "tag:muted");
  notmuch_query_add_tag_exclude (query, "muted");
  notmuch_query_set_omit_excluded (query, NOTMUCH_EXCLUDE_TRUE);

  printf("ret1=3D%d\n", notmuch_query_count_threads (query));
  printf("ret2=3D%d\n", notmuch_query_count_threads (query));

}