-rda_interpret (string): '# Exim filter\nsave TESTSUITE/test-mail'
-expanded: '# Exim filter
-save TESTSUITE/test-mail'
-search_tidyup called
-changed uid/gid: r1 router (recipient is userx@test.ex)
- uid=CALLER_UID gid=CALLER_GID pid=pppp
-turned off address rewrite logging (not root or exim in this process)
-data is an Exim filter program
-Filter: start of processing
-Filter: end of processing
-search_tidyup called
-rda_interpret: subprocess yield=0 error=NULL
+rda_interpret (string): 'TESTSUITE/test-mail'
+expanded: 'TESTSUITE/test-mail'
+file is not a filter file
+parse_forward_list: TESTSUITE/test-mail
+extract item: TESTSUITE/test-mail