diff --git a/Lib/csv.py b/Lib/csv.py
index b2aaf5fd9fa91e..6cae34c705777d 100644
--- a/Lib/csv.py
+++ b/Lib/csv.py
@@ -281,10 +281,10 @@ def _guess_quote_and_delimiter(self, data, delimiters):
         import re
 
         matches = []
-        for restr in (r'(?P<delim>[^\w\n"\'])(?P<space> ?)(?P<quote>["\']).*?(?P=quote)(?P=delim)', # ,".*?",
-                      r'(?:^|\n)(?P<quote>["\']).*?(?P=quote)(?P<delim>[^\w\n"\'])(?P<space> ?)',   #  ".*?",
-                      r'(?P<delim>[^\w\n"\'])(?P<space> ?)(?P<quote>["\']).*?(?P=quote)(?:$|\n)',   # ,".*?"
-                      r'(?:^|\n)(?P<quote>["\']).*?(?P=quote)(?:$|\n)'):                            #  ".*?" (no delim, no space)
+        for restr in (r'(?P<delim>[^\w\n"\'])(?P<space> ?)(?P<quote>["\']).*?(?P=quote)(?P=delim)',   # ,".*?",
+                      r'(?:^|\n)(?P<quote>["\']).*?(?P=quote)(?P<delim>[^\w\n"\'])(?P<space> ?)',     #  ".*?",
+                      r'(?P<delim>[^\w\n"\'])(?P<space> ?)(?P<quote>["\']).*?(?P=quote)(?:$|\r|\n)',  # ,".*?"
+                      r'(?:^|\n)(?P<quote>["\']).*?(?P=quote)(?:$|\r|\n)'):                           #  ".*?" (no delim, no space)
             regexp = re.compile(restr, re.DOTALL | re.MULTILINE)
             matches = regexp.findall(data)
             if matches:
diff --git a/Lib/test/test_csv.py b/Lib/test/test_csv.py
index 7327c1bd5f5053..2ab529b51c207d 100644
--- a/Lib/test/test_csv.py
+++ b/Lib/test/test_csv.py
@@ -1415,6 +1415,9 @@ class TestSniffer(unittest.TestCase):
     sample18.append("v,twenty_one")  # 'u' was not skipped
     sample18 = '\n'.join(sample18)
 
+    sample19 = ('time,title\r\n'
+                '2020-10-01,"Pocket - Save news, videos, stories and more"\r\n')
+
     def test_issue43625(self):
         sniffer = csv.Sniffer()
         self.assertTrue(sniffer.has_header(self.sample12))
@@ -1494,6 +1497,9 @@ def test_delimiters(self):
                                sniffer.sniff, self.sample15)
         self.assertRaisesRegex(csv.Error, "Could not determine delimiter",
                                sniffer.sniff, self.sample16)
+        dialect = sniffer.sniff(self.sample19)
+        self.assertEqual(dialect.delimiter, ',')
+        self.assertEqual(dialect.quotechar, '"')
 
     def test_doublequote(self):
         sniffer = csv.Sniffer()
diff --git a/Misc/NEWS.d/next/Library/2023-04-27-14-50-03.gh-issue-103925.khC-El.rst b/Misc/NEWS.d/next/Library/2023-04-27-14-50-03.gh-issue-103925.khC-El.rst
new file mode 100644
index 00000000000000..858ce6e5bd98e7
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-04-27-14-50-03.gh-issue-103925.khC-El.rst
@@ -0,0 +1,3 @@
+Fix :meth:`csv.Sniffer.sniff` for a sample with ``\r\n`` line endings in
+which a quoted field ends a line: a letter could be detected as the
+delimiter.
diff --git a/Misc/NEWS.d/next/Library/2026-04-17-05-58-27.gh-issue-148665.AlUajE.rst b/Misc/NEWS.d/next/Library/2026-04-17-05-58-27.gh-issue-148665.AlUajE.rst
new file mode 100644
index 00000000000000..db7736f1ae6ef6
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2026-04-17-05-58-27.gh-issue-148665.AlUajE.rst
@@ -0,0 +1 @@
+socket.shutdown function is now enabled for Emscripten builds. However, if the runtime does not implement the shutdown syscall, it will show "Function not implemented" error.
diff --git a/Platforms/emscripten/config.site-wasm32-emscripten b/Platforms/emscripten/config.site-wasm32-emscripten
index f69dbb8e779a42..3c9a1c2c2568b0 100644
--- a/Platforms/emscripten/config.site-wasm32-emscripten
+++ b/Platforms/emscripten/config.site-wasm32-emscripten
@@ -21,9 +21,6 @@ ac_cv_func_eventfd=no
 ac_cv_func_memfd_create=no
 ac_cv_func_prlimit=no
 
-# unsupported syscall, https://github.com/emscripten-core/emscripten/issues/13393
-ac_cv_func_shutdown=no
-
 # The rest is based on pyodide
 # https://github.com/pyodide/pyodide/blob/main/cpython/pyconfig.undefs.h