Merge branch 'tb/connect-ipv6-parse-fix'

We did not parse username followed by literal IPv6 address in SSH
transport URLs, e.g. ssh://user@[2001:db8::1]:22/repo.git
correctly.

* tb/connect-ipv6-parse-fix:
  t5500: show user name and host in diag-url
  t5601: add more test cases for IPV6
  connect.c: allow ssh://user@[2001:db8::1]/repo.git

diff --cc connect.c
index d50f52a,84f8156..ce0e121
--- 1/connect.c
--- 2/connect.c
+++ b/connect.c
@@@ -714,28 -717,31 +726,42 @@@ struct child_process *git_connect(int f
                        char *ssh_host = hostandport;
                        const char *port = NULL;
                        get_host_and_port(&ssh_host, &port);
-                       port = get_port_numeric(port);
 +
-                       ssh = getenv("GIT_SSH_COMMAND");
-                       if (ssh) {
-                               conn->use_shell = 1;
-                               putty = 0;
-                       } else {
-                               ssh = getenv("GIT_SSH");
-                               if (!ssh)
-                                       ssh = "ssh";
-                               putty = !!strcasestr(ssh, "plink");
-                       }
+                       if (!port)
+                               port = get_port(ssh_host);
++
+                       if (flags & CONNECT_DIAG_URL) {
+                               printf("Diag: url=%s\n", url ? url : "NULL");
+                               printf("Diag: protocol=%s\n", prot_name(protocol));
+                               printf("Diag: userandhost=%s\n", ssh_host ? ssh_host : "NULL");
+                               printf("Diag: port=%s\n", port ? port : "NONE");
+                               printf("Diag: path=%s\n", path ? path : "NULL");
  
-                       argv_array_push(&conn->args, ssh);
-                       if (putty && !strcasestr(ssh, "tortoiseplink"))
-                               argv_array_push(&conn->args, "-batch");
-                       if (port) {
-                               /* P is for PuTTY, p is for OpenSSH */
-                               argv_array_push(&conn->args, putty ? "-P" : "-p");
-                               argv_array_push(&conn->args, port);
+                               free(hostandport);
+                               free(path);
+                               return NULL;
+                       } else {
 -                              if (!ssh) ssh = "ssh";
++                              ssh = getenv("GIT_SSH_COMMAND");
++                              if (ssh) {
++                                      conn->use_shell = 1;
++                                      putty = 0;
++                              } else {
++                                      ssh = getenv("GIT_SSH");
++                                      if (!ssh)
++                                              ssh = "ssh";
++                                      putty = !!strcasestr(ssh, "plink");
++                              }
+ 
+                               argv_array_push(&conn->args, ssh);
+                               if (putty && !strcasestr(ssh, "tortoiseplink"))
+                                       argv_array_push(&conn->args, "-batch");
+                               if (port) {
+                                       /* P is for PuTTY, p is for OpenSSH */
+                                       argv_array_push(&conn->args, putty ? "-P" : "-p");
+                                       argv_array_push(&conn->args, port);
+                               }
+                               argv_array_push(&conn->args, ssh_host);
                        }
-                       argv_array_push(&conn->args, ssh_host);
                } else {
                        /* remove repo-local variables from the environment */
                        conn->env = local_repo_env;