[doc] Add warning for empty sequences in 'use-implicit-booleaness-not-comparison'

Author: Pierre-Sassoulas

doc/data/messages/u/use-implicit-booleaness-not-comparison-to-string/details.rst

@@ -1,3 +1,3 @@
 Following this check blindly in weakly typed code base can create hard to debug issues. If the value
-can be something else that is falsey but not a string (for example ``None``, or ``0``), the code will
-not be equivalent.
+can be something else that is falsey but not a string (for example ``None``, an empty sequence, or ``0``),
+the code will not be equivalent.

doc/data/messages/u/use-implicit-booleaness-not-comparison-to-zero/details.rst

@@ -1,3 +1,3 @@
 Following this check blindly in weakly typed code base can create hard to debug issues. If the value
-can be something else that is falsey but not an ``int`` (for example ``None``, or an empty string),
-the code will not be equivalent.
+can be something else that is falsey but not an ``int`` (for example ``None``, an empty sequence,
+or an empty string), the code will not be equivalent.

doc/data/messages/u/use-implicit-booleaness-not-comparison/details.rst

@@ -0,0 +1,3 @@
+Following this check blindly in weakly typed code base can create hard to debug issues. If the value
+can be something else that is falsey but not a sequence (for example ``None``, an empty string, or ``0``),
+the code will not be equivalent.

doc/whatsnew/fragments/6871.user_action

@@ -1,12 +1,13 @@
-* The compare to empty string checker (``pylint.extensions.emptystring``) and the compare to
-  zero checker (``pylint.extensions.compare-to-zero``) have been removed and their checks are
-  now part of the implicit booleaness checker:
-
-  - ``compare-to-zero`` was renamed ``use-implicit-booleaness-not-comparison-to-zero``
-    and ``compare-to-empty-string`` was renamed ``use-implicit-booleaness-not-comparison-to-string``
-    and they now need to be enabled explicitly.
-  - The `pylint.extensions.emptystring`` and ``pylint.extensions.compare-to-zero`` extensions no longer exists and
-    needs to be removed from the ``load-plugins`` option.
+The compare to empty string checker (``pylint.extensions.emptystring``) and the compare to
+zero checker (``pylint.extensions.compare-to-zero``) have been removed and their checks are
+now part of the implicit booleaness checker:
+
+``compare-to-zero`` was renamed ``use-implicit-booleaness-not-comparison-to-zero`` and
+``compare-to-empty-string`` was renamed ``use-implicit-booleaness-not-comparison-to-string``
+and they now need to be enabled explicitly.
+
+The `pylint.extensions.emptystring`` and ``pylint.extensions.compare-to-zero`` extensions
+no longer exists and needs to be removed from the ``load-plugins`` option.
 
 This permits to make their likeness explicit and will provide better performance as they share most of their
 conditions to be raised.