python
diff --git a/‎Doc/library/copyreg.rst
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diff --git a/‎Lib/calendar.py
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diff --git a/‎Lib/pathlib.py
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diff --git a/‎Misc/NEWS.d/next/Library/2023-05-02-04-49-45.gh-issue-103822.m0QdAO.rst
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diff --git a/‎Misc/NEWS.d/next/Library/2023-05-02-21-05-30.gh-issue-104104.9tjplT.rst
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@@ -29,7 +29,7 @@ Such constructors may be factory functions or class instances.
 
    Declares that *function* should be used as a "reduction" function for objects
    of type *type*.  *function* must return either a string or a tuple
-   containing two or five elements. See the :attr:`~pickle.Pickler.dispatch_table`
+   containing between two and six elements. See the :attr:`~pickle.Pickler.dispatch_table`
    for more details on the interface of *function*.
 
    The *constructor_ob* parameter is a legacy feature and is now ignored, but if
 
@@ -83,7 +83,6 @@ class Day(IntEnum):
     SUNDAY = 6
 
 
-
 # Number of days per month (except for February in leap years)
 mdays = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
 
@@ -156,7 +155,7 @@ def weekday(year, month, day):
     """Return weekday (0-6 ~ Mon-Sun) for year, month (1-12), day (1-31)."""
     if not datetime.MINYEAR <= year <= datetime.MAXYEAR:
         year = 2000 + year % 400
-    return datetime.date(year, month, day).weekday()
+    return Day(datetime.date(year, month, day).weekday())
 
 
 def monthrange(year, month):
 
@@ -59,6 +59,9 @@ def _is_wildcard_pattern(pat):
     # be looked up directly as a file.
     return "*" in pat or "?" in pat or "[" in pat
 
+def _is_case_sensitive(flavour):
+    return flavour.normcase('Aa') == 'Aa'
+
 #
 # Globbing helpers
 #
@@ -102,25 +105,24 @@ def select_from(self, parent_path):
         is_dir = path_cls.is_dir
         exists = path_cls.exists
         scandir = path_cls._scandir
-        normcase = path_cls._flavour.normcase
         if not is_dir(parent_path):
             return iter([])
-        return self._select_from(parent_path, is_dir, exists, scandir, normcase)
+        return self._select_from(parent_path, is_dir, exists, scandir)
 
 
 class _TerminatingSelector:
 
-    def _select_from(self, parent_path, is_dir, exists, scandir, normcase):
+    def _select_from(self, parent_path, is_dir, exists, scandir):
         yield parent_path
 
 
 class _ParentSelector(_Selector):
     def __init__(self, name, child_parts, case_sensitive):
         _Selector.__init__(self, child_parts, case_sensitive)
 
-    def _select_from(self,  parent_path, is_dir, exists, scandir, normcase):
+    def _select_from(self,  parent_path, is_dir, exists, scandir):
         path = parent_path._make_child_relpath('..')
-        for p in self.successor._select_from(path, is_dir, exists, scandir, normcase):
+        for p in self.successor._select_from(path, is_dir, exists, scandir):
             yield p
 
 
@@ -130,11 +132,11 @@ def __init__(self, name, child_parts, flavour):
         self.name = name
         _Selector.__init__(self, child_parts, flavour)
 
-    def _select_from(self, parent_path, is_dir, exists, scandir, normcase):
+    def _select_from(self, parent_path, is_dir, exists, scandir):
         try:
             path = parent_path._make_child_relpath(self.name)
             if (is_dir if self.dironly else exists)(path):
-                for p in self.successor._select_from(path, is_dir, exists, scandir, normcase):
+                for p in self.successor._select_from(path, is_dir, exists, scandir):
                     yield p
         except PermissionError:
             return
@@ -143,10 +145,11 @@ def _select_from(self, parent_path, is_dir, exists, scandir, normcase):
 class _WildcardSelector(_Selector):
 
     def __init__(self, pat, child_parts, flavour):
-        self.match = re.compile(fnmatch.translate(flavour.normcase(pat))).fullmatch
+        flags = re.NOFLAG if _is_case_sensitive(flavour) else re.IGNORECASE
+        self.match = re.compile(fnmatch.translate(pat), flags=flags).fullmatch
         _Selector.__init__(self, child_parts, flavour)
 
-    def _select_from(self, parent_path, is_dir, exists, scandir, normcase):
+    def _select_from(self, parent_path, is_dir, exists, scandir):
         try:
             # We must close the scandir() object before proceeding to
             # avoid exhausting file descriptors when globbing deep trees.
@@ -165,9 +168,9 @@ def _select_from(self, parent_path, is_dir, exists, scandir, normcase):
                             raise
                         continue
                 name = entry.name
-                if self.match(normcase(name)):
+                if self.match(name):
                     path = parent_path._make_child_relpath(name)
-                    for p in self.successor._select_from(path, is_dir, exists, scandir, normcase):
+                    for p in self.successor._select_from(path, is_dir, exists, scandir):
                         yield p
         except PermissionError:
             return
@@ -199,13 +202,13 @@ def _iterate_directories(self, parent_path, is_dir, scandir):
         except PermissionError:
             return
 
-    def _select_from(self, parent_path, is_dir, exists, scandir, normcase):
+    def _select_from(self, parent_path, is_dir, exists, scandir):
         try:
             yielded = set()
             try:
                 successor_select = self.successor._select_from
                 for starting_point in self._iterate_directories(parent_path, is_dir, scandir):
-                    for p in successor_select(starting_point, is_dir, exists, scandir, normcase):
+                    for p in successor_select(starting_point, is_dir, exists, scandir):
                         if p not in yielded:
                             yield p
                             yielded.add(p)
 
@@ -0,0 +1 @@
+Update the return type of ``weekday`` to the newly added Day attribute
@@ -0,0 +1,2 @@
+Improve performance of :meth:`pathlib.Path.glob` by using
+:data:`re.IGNORECASE` to implement case-insensitive matching.
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	+Update the return type of ``weekday`` to the newly added Day attribute
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	+Improve performance of :meth:`pathlib.Path.glob` by using
	`2`	+:data:`re.IGNORECASE` to implement case-insensitive matching.