If I place the following code in the plugin fts_backend_xxx_update_build_more function (lucene, squat and xapian, as solr refuses to work properly on my setup)

        {
                char * s = i_strdup("EMPTY");
                if(data != NULL) { i_free(s); s = i_strndup(data,20); }
                i_info("fts_backend_update_build_more: data like '%s'",s);
                i_free(s);
        }

and if I send a PDF by email, the data shown in the log is "%PDF-1.7 "

so it does mean the decoder data is not properly transmitted to the plugin

Something is wrong in the data transmission

Joan

I too see something similar with fts_solr. I do see the raw %PDF string and PDF binary data being passed through to fts_backend_xxx_update_build_more function but I disagree with the conclusion you draw from it.

After the raw data I also see the decoded data, so at least in my case it is possible to see both the raw and decoded data in fts_backend_xxx_update_build_more function. In the rawlog I no longer see the binary data (but some blank lines), so something is filtering it. I do see the decoded data in the rawlog. I do get hits on the solr search for the decoded text.

John