> filter: a'c
> filter: ''a' ''c
> filter: ""
+> # check operation when the condition modifies the 'value' variable
+> E
>
> map: ""
> map: a:b:c
> mask: 0.0.0.0/0
> Failed: missing mask value in "192.168.10.206"
> Failed: "a.b.c.d" is not an IP address
+> mask: 2a00.0002.0003.0004.0004.0000.0000.0000/79
+> mask: 2a00.0002.0003.0004.0005.0006.0007.0008/128
+> Failed: mask value too big in "2a00:2:3:4:5:6:7:8/129"
+> mask_n: 2a00:2:3:4:4::/79
> ipv6denorm: 0000:0000:0000:0000:0000:0000:0000:0001
> ipv6denorm: fe00:0000:0000:0000:0000:0000:0000:0001
> ipv6denorm: 0000:0000:0000:0000:0000:ffff:c0a8:0001
> match: cdab
> Failed: "if" failed and "fail" requested
> match: cd[xyz]ab
+> # check for empty capture group
+> match: <>
>
> match_domain: yes
> match_domain: no
> rc=0
> 1!=2
> rc=0
+> abcd
+1234
+
+> rc=0
+> 2
+> rc=1
>
> # PRVS
>
**** This is not for real!
220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000\r
+250 myhost.test.ex Hello test [V4NET.0.0.0]\r
250 OK\r
250 Accepted\r
354 Enter message, ending with "." on a line by itself\r
**** This is not for real!
220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000\r
+250 myhost.test.ex Hello test [V4NET.0.0.0]\r
250 OK\r
250 Accepted\r
354 Enter message, ending with "." on a line by itself\r
**** This is not for real!
220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000\r
+250 myhost.test.ex Hello test [V4NET.0.0.0]\r
250 OK\r
250 Accepted\r
354 Enter message, ending with "." on a line by itself\r