Fix handling of quoted init-hook (#7010)

Co-authored-by: Jacob Walls <[email protected]>

Author: 2 people

doc/whatsnew/2/2.14/full.rst

@@ -9,6 +9,9 @@ Release date: TBA
 
   Closes #6950
 
+* Fixed regression that didn't allow quoted ``init-hooks`` in option files.
+
+  Closes #7006
 
 What's New in Pylint 2.14.3?
 ----------------------------

pylint/config/config_initialization.py

@@ -45,7 +45,7 @@ def _config_initialization(
 
     # Run init hook, if present, before loading plugins
     if "init-hook" in config_data:
-        exec(config_data["init-hook"])  # pylint: disable=exec-used
+        exec(utils._unquote(config_data["init-hook"]))  # pylint: disable=exec-used
 
     # Load plugins if specified in the config file
     if "load-plugins" in config_data:

tests/config/functional/ini/pylintrc_with_quoted_init_hook.0.out

@@ -0,0 +1 @@
+I should just print

tests/config/functional/ini/pylintrc_with_quoted_init_hook.ini

@@ -0,0 +1,4 @@
+# Check that we support quoted init-hooks
+# See https://github.com/PyCQA/pylint/issues/7006
+[MAIN]
+init-hook='print("I should just print")'