Issue with empty records

[henridf]

21:38 ~/work/brim/zq(master)
$ zq -t test.tzng 
#0:record[tls:record[fingerprint:string,issuerdn:string,ja3:record[],ja3s:record[],notafter:string,notbefore:string,serial:string,sni:string,subject:string,version:string]]
0:[[78:35:38:c6:0f:ad:a5:8e:81:d2:67:da:2b:10:06:36:1c:c7:da:8f;C=US, O=Google Inc, CN=Google Internet Authority G2;[][]2015-05-28T00:00:00;2015-02-27T20:32:20;20:D8:C6:DD:69:6D:FD:45;safebrowsing-cache.google.com;C=US, ST=California, L=Mountain View, O=Google Inc, CN=*.google.com;TLS 1.2;]]
21:38 ~/work/brim/zq(master)
$ zq test.tzng | zq -t -
#0:record[tls:record[fingerprint:string,issuerdn:string,ja3:record[],ja3s:record[],notafter:string,notbefore:string,serial:string,sni:string,subject:string,version:string]]
0:[[78:35:38:c6:0f:ad:a5:8e:81:d2:67:da:2b:10:06:36:1c:c7:da:8f;C=US, O=Google Inc, CN=Google Internet Authority G2;[zng syntax error

[philrz]

Verified in zq commit 85f3a81.

The syntax error is now gone, and turning the TZNG into zq's internal representation and writing it back out again as TZNG gives the same bytes.

$ zq test.tzng | zq -t - | tee output.tzng
#0:record[tls:record[fingerprint:string,issuerdn:string,ja3:record[],ja3s:record[],notafter:string,notbefore:string,serial:string,sni:string,subject:string,version:string]]
0:[[78:35:38:c6:0f:ad:a5:8e:81:d2:67:da:2b:10:06:36:1c:c7:da:8f;C=US, O=Google Inc, CN=Google Internet Authority G2;[][]2015-05-28T00:00:00;2015-02-27T20:32:20;20:D8:C6:DD:69:6D:FD:45;safebrowsing-cache.google.com;C=US, ST=California, L=Mountain View, O=Google Inc, CN=*.google.com;TLS 1.2;]]
$ diff test.tzng output.tzng 
$ echo $?
0

Thanks @henridf!