diff --git a/Lib/encodings/idna.py b/Lib/encodings/idna.py
index ea4058512fe366d40ec150a943d8d73b4861be22..15adce55c7a1535d82eb644211b3900e997f99b9 100644
--- a/Lib/encodings/idna.py
+++ b/Lib/encodings/idna.py
@@ -39,23 +39,21 @@ def nameprep(label):
 
     # Check bidi
     RandAL = [stringprep.in_table_d1(x) for x in label]
-    for c in RandAL:
-        if c:
-            # There is a RandAL char in the string. Must perform further
-            # tests:
-            # 1) The characters in section 5.8 MUST be prohibited.
-            # This is table C.8, which was already checked
-            # 2) If a string contains any RandALCat character, the string
-            # MUST NOT contain any LCat character.
-            if any(stringprep.in_table_d2(x) for x in label):
-                raise UnicodeError("Violation of BIDI requirement 2")
-
-            # 3) If a string contains any RandALCat character, a
-            # RandALCat character MUST be the first character of the
-            # string, and a RandALCat character MUST be the last
-            # character of the string.
-            if not RandAL[0] or not RandAL[-1]:
-                raise UnicodeError("Violation of BIDI requirement 3")
+    if any(RandAL):
+    # There is a RandAL char in the string. Must perform further
+    # tests:
+    # 1) The characters in section 5.8 MUST be prohibited.
+    # This is table C.8, which was already checked
+    # 2) If a string contains any RandALCat character, the string
+    # MUST NOT contain any LCat character.
+    if any(stringprep.in_table_d2(x) for x in label):
+        raise UnicodeError("Violation of BIDI requirement 2")
+    # 3) If a string contains any RandALCat character, a
+    # RandALCat character MUST be the first character of the
+    # string, and a RandALCat character MUST be the last
+    # character of the string.
+    if not RandAL[0] or not RandAL[-1]:
+        raise UnicodeError("Violation of BIDI requirement 3")
 
     return label
 
diff --git a/Lib/test/test_codecs.py b/Lib/test/test_codecs.py
index a9c43d9554beafa65ea3979fdfd24c4337141e63..0b7283a4020f848f6338ac723015342d9489b3fa 100644
--- a/Lib/test/test_codecs.py
+++ b/Lib/test/test_codecs.py
@@ -1534,6 +1534,12 @@ class IDNACodecTest(unittest.TestCase):
         self.assertEqual("pyth\xf6n.org".encode("idna"), b"xn--pythn-mua.org")
         self.assertEqual("pyth\xf6n.org.".encode("idna"), b"xn--pythn-mua.org.")
 
+    def test_builtin_decode_length_limit(self):
+        with self.assertRaisesRegex(UnicodeError, "too long"):
+            (b"xn--016c"+b"a"*1100).decode("idna")
+        with self.assertRaisesRegex(UnicodeError, "too long"):
+            (b"xn--016c"+b"a"*70).decode("idna")
+
     def test_stream(self):
         r = codecs.getreader("idna")(io.BytesIO(b"abc"))
         r.read(3)
diff --git a/user b/user
new file mode 100644
index 0000000000000000000000000000000000000000..ca1e945720f7043fbe0e9e5e7c670d8a7dc621e2
--- /dev/null
+++ b/user
@@ -0,0 +1,45 @@
+error: wrong number of arguments, should be from 1 to 2
+usage: git config [<options>]
+
+Config file location
+    --global              use global config file
+    --system              use system config file
+    --local               use repository config file
+    --worktree            use per-worktree config file
+    -f, --file <file>     use given config file
+    --blob <blob-id>      read config from given blob object
+
+Action
+    --get                 get value: name [value-pattern]
+    --get-all             get all values: key [value-pattern]
+    --get-regexp          get values for regexp: name-regex [value-pattern]
+    --get-urlmatch        get value specific for the URL: section[.var] URL
+    --replace-all         replace all matching variables: name value [value-pattern]
+    --add                 add a new variable: name value
+    --unset               remove a variable: name [value-pattern]
+    --unset-all           remove all matches: name [value-pattern]
+    --rename-section      rename section: old-name new-name
+    --remove-section      remove a section: name
+    -l, --list            list all
+    --fixed-value         use string equality when comparing values to 'value-pattern'
+    -e, --edit            open an editor
+    --get-color           find the color configured: slot [default]
+    --get-colorbool       find the color setting: slot [stdout-is-tty]
+
+Type
+    -t, --type <type>     value is given this type
+    --bool                value is "true" or "false"
+    --int                 value is decimal number
+    --bool-or-int         value is --bool or --int
+    --bool-or-str         value is --bool or string
+    --path                value is a path (file or directory name)
+    --expiry-date         value is an expiry date
+
+Other
+    -z, --null            terminate values with NUL byte
+    --name-only           show variable names only
+    --includes            respect include directives on lookup
+    --show-origin         show origin of config (file, standard input, blob, command line)
+    --show-scope          show scope of config (worktree, local, global, system, command)
+    --default <value>     with --get, use default value when missing entry
+