display user/channel correctly in export output

conans/client/cmd/export.py

@@ -85,6 +85,8 @@ def cmd_export(app, conanfile_path, name, version, user, channel, keep_source,
         channel = None
 
     ref = ConanFileReference(conanfile.name, conanfile.version, user, channel)
+    conanfile.display_name = str(ref)
+    conanfile.output.scope = conanfile.display_name
 
     # If we receive lock information, python_requires could have been locked
     if graph_lock:

conans/test/integration/command/export/test_export.py

@@ -0,0 +1,23 @@
+import textwrap
+
+from conans.test.utils.tools import TestClient
+
+
+def test_basic():
+    client = TestClient()
+    conanfile = textwrap.dedent("""
+        from conans import ConanFile
+        class TestConan(ConanFile):
+            name = "hello"
+            version = "1.2"
+            default_user = "myuser"
+            default_channel = "mychannel"
+        """)
+    client.save({"conanfile.py": conanfile})
+    client.run("export .")
+    assert "hello/1.2@myuser/mychannel" in client.out
+    client.run("search *")
+    assert "hello/1.2@myuser/mychannel" in client.out
+    client.run("create .")
+    assert "hello/1.2@myuser/mychannel" in client.out
+    assert "hello/1.2:" not in client.out