Fix --all flag not showing 401 response for digest auth

When using digest authentication with the --all flag, the intermediate
401 Unauthorized response was not being displayed. This is because the
requests library stores the 401 response in response.history, but HTTPie
wasn't yielding those historical responses.

This fix checks response.history when --all is used and yields any
historical responses (such as the 401 from digest auth challenges).

Fixes #1603

Author: po-nuvai

AUTHORS.md

@@ -39,3 +39,4 @@
 - [Elena Lape](https://github.com/elenalape)
 - [Rohit Sehgal](https://github.com/r0hi7)
 - [Bartłomiej Jacak](https://github.com/bartekjacak)
+- [POTHIHAI SELVAN S P](https://github.com/po-nuvai)

httpie/client.py

@@ -122,6 +122,13 @@ def collect_messages(
             )
 
             response_count += 1
+
+            # Yield historical responses (e.g., 401 from digest auth) with --all
+            # See: https://github.com/httpie/cli/issues/1603
+            if args.all and response.history:
+                for historical_response in response.history:
+                    yield historical_response
+
             if response.next:
                 if args.max_redirects and response_count == args.max_redirects:
                     raise requests.TooManyRedirects

tests/test_auth.py

@@ -153,3 +153,24 @@ def test_ignore_netrc_null_auth():
         env=MockEnvironment(),
     )
     assert isinstance(args.auth, ExplicitNullAuth)
+
+
+def test_digest_auth_with_all_shows_401(httpbin_both):
+    """
+    Test that --all flag shows the intermediate 401 response
+    when using digest authentication.
+
+    See: https://github.com/httpie/cli/issues/1603
+    """
+    r = http(
+        '--all',
+        '--auth-type=digest',
+        '--auth=user:password',
+        'GET',
+        httpbin_both.url + '/digest-auth/auth/user/password'
+    )
+    # Should contain both the 401 and the 200 responses
+    assert '401 UNAUTHORIZED' in r or '401 Unauthorized' in r
+    assert HTTP_OK in r
+    # Verify the authenticated response body is present
+    assert '"authenticated": true' in r