Don't logexpect partial regular expressions

It turns out some of the tests weren't completely checked.

bin/varnishtest/tests/b00002.vtc

@@ -18,10 +18,10 @@ varnish v1 -vcl+backend {
 # last header and VCL_return b deliver
 logexpect l1 -v v1 -g request {
 	  expect * 1002 Begin
-	  expect * =	BerespHeader	^Date:
-	  expect 0 =	VCL_call	^BACKEND_RESPONSE
-	  expect 0 =	BerespHeader	^x-ttl: 0.000
-	  expect 0 =	VCL_return	^deliver
+	  expect * =	BerespHeader	{^Date:}
+	  expect 0 =	VCL_call	{^BACKEND_RESPONSE}
+	  expect 0 =	BerespHeader	{^x-ttl: 0.000}
+	  expect 0 =	VCL_return	{^deliver}
 } -start
 
 client c1 {

bin/varnishtest/tests/r01441.vtc

@@ -19,15 +19,15 @@ varnish v1 -vcl+backend {
 } -start -cliok "param.set debug +syncvsl"
 
 logexpect l1 -v v1 -g session {
-	expect 0 1000	Begin sess 0 HTTP/1
+	expect 0 1000	Begin {sess 0 HTTP/1}
 	expect * =	End
-	expect 0 1001	Begin req 1000 rxreq
+	expect 0 1001	Begin {req 1000 rxreq}
 	expect * =	End
-	expect 0 1002	Begin bereq 1001 fetch
+	expect 0 1002	Begin {bereq 1001 fetch}
 	expect * =	End
-	expect 0 1003	Begin req 1001 esi
+	expect 0 1003	Begin {req 1001 esi}
 	expect * =	End
-	expect 0 1004	Begin bereq 1003 fetch
+	expect 0 1004	Begin {bereq 1003 fetch}
 	expect * =	End
 } -start
 

bin/varnishtest/tests/s00004.vtc

@@ -39,7 +39,7 @@ logexpect l1 -v v1 -g request {
 	expect * =	Timestamp	{Beresp: \S+ 1\.\d+ [01]\.\d+}
 	expect * =	Timestamp	{BerespBody: \S+ 2\.\d+ 1\.\d+}
 	expect * =	End
-	expect 0 1003	Begin		req 1001 restart
+	expect 0 1003	Begin		{req 1001 restart}
 	expect * =	Timestamp	{Start: \S+ 2\.\d+ 0\.\d+}
 	expect * =	Timestamp	{Process: \S+ 2\.\d+ 0\.\d+}
 	expect * =	Timestamp	{Resp: \S+ 2\.\d+ 0\.\d+}

bin/varnishtest/vtc_logexp.c

@@ -101,8 +101,10 @@
  *         Tag to match against
  *
  * regex:
- *         regular expression to match against (optional) ('*' is anything, '='
- *         is the value of the last matched record)
+ *         regular expression to match against (optional)
+ *
+ * For skip, vxid and tag, '*' matches anything, '=' expects the value of the
+ * previous matched record.
  */
 
 #include "config.h"
@@ -433,6 +435,9 @@ cmd_logexp_expect(CMD_ARGS)
 	if (av[1] == NULL || av[2] == NULL || av[3] == NULL)
 		vtc_fatal(vl, "Syntax error");
 
+	if (av[4] != NULL && av[5] != NULL)
+		vtc_fatal(vl, "Syntax error");
+
 	if (!strcmp(av[1], "*"))
 		skip_max = LE_ANY;
 	else {