10 ${perl{readvar}{primary_hostname}}
11 ${perl{readvar}{notexists}}
14 ${perl{foo}{1}{2}{3}{4}{5}{6}{7}{8}}
15 ${perl{foo}{1}{2}{3}{4}{5}{6}{7}{8}{9}}
17 ${perl{return_scalar}}
19 ${perl{return_variable_vector}}
20 ${sg{${perl{return_hash}}}{\\d+}{X}}
22 this change-locale fails in earlier systems. Works on Fedora 29.
23 $tod_full // ${perl{change_locale}} // $tod_full
25 exim -d-all+expand -be
28 ${perl{debug_write}{debug from Perl\n}}
29 ${perl{log_write}{log from Perl}}
43 exim -DSERVER=server -bd -oX PORT_D
45 client 127.0.0.1 PORT_D