jp (roster): change groups delimiter for "roster get" output, from "|" to "\t"

frontends/src/jp/cmd_roster.py

@@ -197,8 +197,7 @@ class Get(base.CommandBase):
             if self.args.name:
                 args.append(unicode(attrs.get("name", "")))
             if self.args.groups:
-                # FIXME: pipe character could also be in a group name
-                args.append(u"|".join(groups) if groups else "")
+                args.append(u"\t".join(groups) if groups else "")
             print u";".join(["{}"] * field_count).format(*args).encode("utf-8")
         self.host.quit()