+ # remote port numbers vary
+ s/(Connection request from 127.0.0.1 port) \d{1,5}/$1 sssss/;
+
+ # Skip hosts_require_dane checks when the options
+ # are unset, because dane ain't always there.
+
+ next if /in\shosts_require_dane\?\sno\s\(option\sunset\)/x;
+
+ # SUPPORT_PROXY
+ next if /host in hosts_proxy\?/;
+
+ # Experimental_International
+ next if / in smtputf8_advertise_hosts\? no \(option unset\)/;
+
+ # Environment cleaning
+ next if /\w+ in keep_environment\? (yes|no)/;
+
+ # Sizes vary with test hostname
+ s/^cmd buf flush \d+ bytes$/cmd buf flush ddd bytes/;
+
+ # Spool filesystem free space changes on different systems.
+ s/^((?:spool|log) directory space =) -?\d+K (inodes =)\s*-?\d+/$1 nnnnnK $2 nnnnn/;
+
+ # Non-TLS builds have different expansions for received_header_text
+ if (s/( \{with \$received_protocol)}\} \$\{if def:tls_cipher \{\(\$tls_cipher\)\n$/$1/)
+ {
+ $_ .= <IN>;
+ s/\t(\}\}\{Exim)/$1/;
+ }
+
+ # Not all platforms support TCP Fast Open, and the compile omits the check
+ if (s/\S+ in hosts_try_fastopen\? no \(option unset\)\n$//)
+ {
+ $_ .= <IN>;
+ s/ \.\.\. >>> / ... /;
+ }
+
+ next if /^setsockopt FASTOPEN: Protocol not available$/;
+