Hi Martin,
I see that there are more commands where it should be added?
[neteler@pgis_north grass71]$ find . -name "*.c" | xargs fgrep
--files-with-match db_begin_transaction | xargs fgrep
--files-without-match db_set_error_handler_driver
./raster/r.to.vect/main.c
./raster/r.stream.segment/stream_vector.c
./raster/r.stream.order/stream_vector.c
./raster/r.contour/main.c
./raster/r.stream.extract/close.c
./lib/db/dbmi_client/copy_tab.c
./lib/db/dbmi_client/c_execute.c
./lib/lidar/raster.c
./raster3d/r3.flow/main.c
./vector/v.net/turntable.c
./vector/v.net.flow/main.c
./vector/v.in.ascii/main.c
./vector/v.lidar.correction/correction.c
./vector/v.lidar.edgedetection/edgedetection.c
./vector/v.colors/write_rgb.c
./vector/v.vect.stats/main.c
./vector/v.what.rast3/main.c
./vector/v.net.centrality/main.c
./vector/v.what.rast/main.c
./vector/v.net.distance/main.c
./vector/v.net.allpairs/main.c
./vector/v.mkgrid/main.c
./vector/v.sample/main.c
./vector/v.to.db/update.c
./vector/v.net.path/path.c
./vector/v.kcv/main.c
./vector/v.reclass/main.c
./vector/v.net.components/main.c
./vector/v.patch/main.c
./vector/v.net.timetable/main.c
./vector/v.in.dxf/write_vect.c
./vector/v.in.ogr/main.c
./vector/v.overlay/main.c
./vector/v.distance/main.c
./vector/v.outlier/outlier.c
./vector/v.in.lidar/main.c
./vector/v.in.dwg/main.c
Not sure where it applies and where not...
Markus