From fbc9e663473fa0416779f1d71109b4123f6c3365 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20van=20Noord?=
 <13665637+DanielNoord@users.noreply.github.com>
Date: Mon, 19 Sep 2022 14:06:33 +0200
Subject: [PATCH] Accept a comma-separated list of messages IDs in
 ``--help-msg`` (#7490)

---
 doc/whatsnew/fragments/7471.bugfix | 3 +++
 pylint/config/callback_actions.py  | 6 +++++-
 tests/test_self.py                 | 1 +
 3 files changed, 9 insertions(+), 1 deletion(-)
 create mode 100644 doc/whatsnew/fragments/7471.bugfix

diff --git a/doc/whatsnew/fragments/7471.bugfix b/doc/whatsnew/fragments/7471.bugfix
new file mode 100644
index 0000000000..b1b6f369c9
--- /dev/null
+++ b/doc/whatsnew/fragments/7471.bugfix
@@ -0,0 +1,3 @@
+``--help-msg`` now accepts a comma-separated list of message IDs again.
+
+Closes #7471
diff --git a/pylint/config/callback_actions.py b/pylint/config/callback_actions.py
index 5c27bca35b..242629a88e 100644
--- a/pylint/config/callback_actions.py
+++ b/pylint/config/callback_actions.py
@@ -158,7 +158,11 @@ def __call__(
         option_string: str | None = "--help-msg",
     ) -> None:
         assert isinstance(values, (list, tuple))
-        self.run.linter.msgs_store.help_message(values)
+        values_to_print: list[str] = []
+        for msg in values:
+            assert isinstance(msg, str)
+            values_to_print += utils._check_csv(msg)
+        self.run.linter.msgs_store.help_message(values_to_print)
         sys.exit(0)
 
 
diff --git a/tests/test_self.py b/tests/test_self.py
index f2587c5c73..c382edb196 100644
--- a/tests/test_self.py
+++ b/tests/test_self.py
@@ -1229,6 +1229,7 @@ def test_output_of_callback_options(
             [["--help-msg", "W0101"], ":unreachable (W0101)", False],
             [["--help-msg", "WX101"], "No such message id", False],
             [["--help-msg"], "--help-msg: expected at least one argumen", True],
+            [["--help-msg", "C0102,C0103"], ":invalid-name (C0103):", False],
         ],
     )
     def test_help_msg(