From d1953bf2559faa1986411cecde28cfd12f66ce5c Mon Sep 17 00:00:00 2001
From: wyattscarpenter <wyattscarpenter@gmail.com>
Date: Sun, 11 May 2025 17:23:16 -0700
Subject: [PATCH 01/19] add some tests for 12342

---
 test-data/unit/check-inline-config.test | 701 +++++++++++++-----------
 1 file changed, 372 insertions(+), 329 deletions(-)

diff --git a/test-data/unit/check-inline-config.test b/test-data/unit/check-inline-config.test
index c81dcac94afde..101a0403a168b 100644
--- a/test-data/unit/check-inline-config.test
+++ b/test-data/unit/check-inline-config.test
@@ -1,329 +1,372 @@
--- Checks for 'mypy: option' directives inside files
-
-[case testInlineSimple1]
-
-# mypy: disallow-any-generics, no-warn-no-return
-
-from typing import List, Optional
-def foo() -> Optional[List]:  # E: Missing type parameters for generic type "List"
-    20
-
-[builtins fixtures/list.pyi]
-
-[case testInlineSimple2]
-
-# mypy: disallow-any-generics
-# mypy: no-warn-no-return
-
-from typing import List, Optional
-def foo() -> Optional[List]:  # E: Missing type parameters for generic type "List"
-    20
-
-[builtins fixtures/list.pyi]
-
-[case testInlineSimple3]
-
-# mypy: disallow-any-generics=true, warn-no-return=0
-
-from typing import List, Optional
-def foo() -> Optional[List]:  # E: Missing type parameters for generic type "List"
-    20
-
-[builtins fixtures/list.pyi]
-
-
-[case testInlineSimple4]
-
-# mypy: disallow-any-generics = true, warn-no-return = 0
-
-from typing import List, Optional
-def foo() -> Optional[List]:  # E: Missing type parameters for generic type "List"
-    20
-
-[builtins fixtures/list.pyi]
-
-[case testInlineList]
-
-# mypy: disallow-any-generics,always-false="FOO,BAR"
-
-from typing import List
-
-def foo(FOO: bool, BAR: bool) -> List:  # E: Missing type parameters for generic type "List"
-    if FOO or BAR:
-        1+'lol'
-    return []
-
-[builtins fixtures/list.pyi]
-
-[case testInlineInvert1]
-# flags: --disallow-any-generics --allow-untyped-globals
-import a
-[file a.py]
-# mypy: allow-any-generics, disallow-untyped-globals
-
-x = []  # E: Need type annotation for "x" (hint: "x: List[<type>] = ...")
-
-from typing import List
-def foo() -> List:
-    ...
-
-[builtins fixtures/list.pyi]
-
-[case testInlineInvert2]
-
-import a
-[file a.py]
-# mypy: no-always-true
-
-[out]
-tmp/a.py:1: error: Can not invert non-boolean key always_true
-
-[case testInlineIncremental1]
-
-import a
-[file a.py]
-# mypy: disallow-any-generics, no-warn-no-return
-
-from typing import List, Optional
-def foo() -> Optional[List]:
-    20
-
-[file a.py.2]
-# mypy: no-warn-no-return
-
-from typing import List, Optional
-def foo() -> Optional[List]:
-    20
-
-[file a.py.3]
-from typing import List, Optional
-def foo() -> Optional[List]:
-    20
-[out]
-tmp/a.py:4: error: Missing type parameters for generic type "List"
-[out2]
-[out3]
-tmp/a.py:2: error: Missing return statement
-
-[builtins fixtures/list.pyi]
-
-[case testInlineIncremental2]
-
-# flags2: --disallow-any-generics
-import a
-[file a.py]
-# mypy: no-warn-no-return
-
-from typing import Optional, List
-def foo() -> Optional[List]:
-    20
-
-[file b.py.2]
-# no changes to a.py, but flag change should cause recheck
-
-[out]
-[out2]
-tmp/a.py:4: error: Missing type parameters for generic type "List"
-
-[builtins fixtures/list.pyi]
-
-[case testInlineIncremental3]
-import a, b
-[file a.py]
-# mypy: no-warn-no-return
-from typing import Optional
-
-def foo() -> Optional[int]:
-    20
-
-[file b.py]
-[file b.py.2]
-# no changes to a.py and we want to make sure it isn't rechecked
-[out]
-[out2]
-[rechecked b]
-
-[case testInlineError1]
-# mypy: invalid-whatever
-# mypy: no-warn-no-return; no-strict-optional
-# mypy: always-true=FOO,BAR
-# mypy: always-true="FOO,BAR
-[out]
-main:1: error: Unrecognized option: invalid_whatever = True
-main:2: error: Unrecognized option: no_warn_no_return; no_strict_optional = True
-main:3: error: Unrecognized option: bar = True
-main:4: error: Unterminated quote in configuration comment
-
-[case testInlineError2]
-# mypy: skip-file
-[out]
-main:1: error: Unrecognized option: skip_file = True
-
-[case testInlineStrict]
-# mypy: strict
-[out]
-main:1: error: Setting "strict" not supported in inline configuration: specify it in a configuration file instead, or set individual inline flags (see "mypy -h" for the list of flags enabled in strict mode)
-
-[case testInlineErrorCodes]
-# mypy: enable-error-code="ignore-without-code,truthy-bool"
-class Foo:
-    pass
-
-foo = Foo()
-if foo: ...  # E: "__main__.foo" has type "Foo" which does not implement __bool__ or __len__ so it could always be true in boolean context
-42 + "no"  # type: ignore  # E: "type: ignore" comment without error code (consider "type: ignore[operator]" instead)
-
-[case testInlineErrorCodesOverrideConfig]
-# flags: --config-file tmp/mypy.ini
-import foo
-import tests.bar
-import tests.baz
-[file foo.py]
-# mypy: disable-error-code="truthy-bool"
-class Foo:
-    pass
-
-foo = Foo()
-if foo: ...
-42 + "no"  # type: ignore  # E: "type: ignore" comment without error code (consider "type: ignore[operator]" instead)
-
-[file tests/__init__.py]
-[file tests/bar.py]
-# mypy: enable-error-code="ignore-without-code"
-
-def foo() -> int: ...
-if foo: ...  # E: Function "foo" could always be true in boolean context
-42 + "no"  # type: ignore  # E: "type: ignore" comment without error code (consider "type: ignore[operator]" instead)
-
-[file tests/baz.py]
-# mypy: disable-error-code="truthy-bool"
-class Foo:
-    pass
-
-foo = Foo()
-if foo: ...
-42 + "no"  # type: ignore
-
-[file mypy.ini]
-\[mypy]
-enable_error_code = ignore-without-code, truthy-bool
-
-\[mypy-tests.*]
-disable_error_code = ignore-without-code
-
-[case testIgnoreErrorsSimple]
-# mypy: ignore-errors=True
-
-def f() -> None:
-    while 1():
-        pass
-
-[case testIgnoreErrorsInImportedModule]
-from m import C
-c = C()
-reveal_type(c.x)  # N: Revealed type is "builtins.int"
-
-[file m.py]
-# mypy: ignore-errors=True
-
-class C:
-    def f(self) -> None:
-        self.x = 1
-
-[case testIgnoreErrorsWithLambda]
-# mypy: ignore-errors=True
-
-def f(self, x=lambda: 1) -> None:
-    pass
-
-class C:
-    def f(self) -> None:
-        l = lambda: 1
-        self.x = 1
-
-[case testIgnoreErrorsWithUnsafeSuperCall_no_empty]
-
-from m import C
-
-class D(C):
-    def m(self) -> None:
-        super().m1()
-        super().m2() \
-            # E: Call to abstract method "m2" of "C" with trivial body via super() is unsafe
-        super().m3() \
-            # E: Call to abstract method "m3" of "C" with trivial body via super() is unsafe
-        super().m4() \
-            # E: Call to abstract method "m4" of "C" with trivial body via super() is unsafe
-        super().m5() \
-            # E: Call to abstract method "m5" of "C" with trivial body via super() is unsafe
-        super().m6() \
-            # E: Call to abstract method "m6" of "C" with trivial body via super() is unsafe
-        super().m7()
-
-    def m1(self) -> int:
-        return 0
-
-    def m2(self) -> int:
-        return 0
-
-    def m3(self) -> int:
-        return 0
-
-    def m4(self) -> int:
-        return 0
-
-    def m5(self) -> int:
-        return 0
-
-    def m6(self) -> int:
-        return 0
-
-[file m.py]
-# mypy: ignore-errors=True
-import abc
-
-class C:
-    @abc.abstractmethod
-    def m1(self) -> int:
-        """x"""
-        return 0
-
-    @abc.abstractmethod
-    def m2(self) -> int:
-        """doc"""
-
-    @abc.abstractmethod
-    def m3(self) -> int:
-        pass
-
-    @abc.abstractmethod
-    def m4(self) -> int: ...
-
-    @abc.abstractmethod
-    def m5(self) -> int:
-        """doc"""
-        ...
-
-    @abc.abstractmethod
-    def m6(self) -> int:
-        raise NotImplementedError()
-
-    @abc.abstractmethod
-    def m7(self) -> int:
-        raise NotImplementedError()
-        pass
-
-[builtins fixtures/exception.pyi]
-
-[case testInlineErrorCodesMultipleCodes]
-# mypy: disable-error-code="truthy-bool, ignore-without-code"
-class Foo:
-    pass
-
-foo = Foo()
-if foo: ...
-42 + "no"  # type: ignore
-
-
-[case testInlinePythonVersion]
-# mypy: python-version=3.10  # E: python_version not supported in inline configuration
+-- Checks for 'mypy: option' directives inside files
+
+[case testInlineSimple1]
+
+# mypy: disallow-any-generics, no-warn-no-return
+
+from typing import List, Optional
+def foo() -> Optional[List]:  # E: Missing type parameters for generic type "List"
+    20
+
+[builtins fixtures/list.pyi]
+
+[case testInlineSimple2]
+
+# mypy: disallow-any-generics
+# mypy: no-warn-no-return
+
+from typing import List, Optional
+def foo() -> Optional[List]:  # E: Missing type parameters for generic type "List"
+    20
+
+[builtins fixtures/list.pyi]
+
+[case testInlineSimple3]
+
+# mypy: disallow-any-generics=true, warn-no-return=0
+
+from typing import List, Optional
+def foo() -> Optional[List]:  # E: Missing type parameters for generic type "List"
+    20
+
+[builtins fixtures/list.pyi]
+
+
+[case testInlineSimple4]
+
+# mypy: disallow-any-generics = true, warn-no-return = 0
+
+from typing import List, Optional
+def foo() -> Optional[List]:  # E: Missing type parameters for generic type "List"
+    20
+
+[builtins fixtures/list.pyi]
+
+[case testInlineList]
+
+# mypy: disallow-any-generics,always-false="FOO,BAR"
+
+from typing import List
+
+def foo(FOO: bool, BAR: bool) -> List:  # E: Missing type parameters for generic type "List"
+    if FOO or BAR:
+        1+'lol'
+    return []
+
+[builtins fixtures/list.pyi]
+
+[case testInlineInvert1]
+# flags: --disallow-any-generics --allow-untyped-globals
+import a
+[file a.py]
+# mypy: allow-any-generics, disallow-untyped-globals
+
+x = []  # E: Need type annotation for "x" (hint: "x: List[<type>] = ...")
+
+from typing import List
+def foo() -> List:
+    ...
+
+[builtins fixtures/list.pyi]
+
+[case testInlineInvert2]
+
+import a
+[file a.py]
+# mypy: no-always-true
+
+[out]
+tmp/a.py:1: error: Can not invert non-boolean key always_true
+
+[case testInlineIncremental1]
+
+import a
+[file a.py]
+# mypy: disallow-any-generics, no-warn-no-return
+
+from typing import List, Optional
+def foo() -> Optional[List]:
+    20
+
+[file a.py.2]
+# mypy: no-warn-no-return
+
+from typing import List, Optional
+def foo() -> Optional[List]:
+    20
+
+[file a.py.3]
+from typing import List, Optional
+def foo() -> Optional[List]:
+    20
+[out]
+tmp/a.py:4: error: Missing type parameters for generic type "List"
+[out2]
+[out3]
+tmp/a.py:2: error: Missing return statement
+
+[builtins fixtures/list.pyi]
+
+[case testInlineIncremental2]
+
+# flags2: --disallow-any-generics
+import a
+[file a.py]
+# mypy: no-warn-no-return
+
+from typing import Optional, List
+def foo() -> Optional[List]:
+    20
+
+[file b.py.2]
+# no changes to a.py, but flag change should cause recheck
+
+[out]
+[out2]
+tmp/a.py:4: error: Missing type parameters for generic type "List"
+
+[builtins fixtures/list.pyi]
+
+[case testInlineIncremental3]
+import a, b
+[file a.py]
+# mypy: no-warn-no-return
+from typing import Optional
+
+def foo() -> Optional[int]:
+    20
+
+[file b.py]
+[file b.py.2]
+# no changes to a.py and we want to make sure it isn't rechecked
+[out]
+[out2]
+[rechecked b]
+
+[case testInlineError1]
+# mypy: invalid-whatever
+# mypy: no-warn-no-return; no-strict-optional
+# mypy: always-true=FOO,BAR
+# mypy: always-true="FOO,BAR
+[out]
+main:1: error: Unrecognized option: invalid_whatever = True
+main:2: error: Unrecognized option: no_warn_no_return; no_strict_optional = True
+main:3: error: Unrecognized option: bar = True
+main:4: error: Unterminated quote in configuration comment
+
+[case testInlineError2]
+# mypy: skip-file
+[out]
+main:1: error: Unrecognized option: skip_file = True
+
+[case testInlineStrict]
+# mypy: strict
+[out]
+main:1: error: Setting "strict" not supported in inline configuration: specify it in a configuration file instead, or set individual inline flags (see "mypy -h" for the list of flags enabled in strict mode)
+
+[case testInlineErrorCodes]
+# mypy: enable-error-code="ignore-without-code,truthy-bool"
+class Foo:
+    pass
+
+foo = Foo()
+if foo: ...  # E: "__main__.foo" has type "Foo" which does not implement __bool__ or __len__ so it could always be true in boolean context
+42 + "no"  # type: ignore  # E: "type: ignore" comment without error code (consider "type: ignore[operator]" instead)
+
+[case testInlineErrorCodesOverrideConfig]
+# flags: --config-file tmp/mypy.ini
+import foo
+import tests.bar
+import tests.baz
+[file foo.py]
+# mypy: disable-error-code="truthy-bool"
+class Foo:
+    pass
+
+foo = Foo()
+if foo: ...
+42 + "no"  # type: ignore  # E: "type: ignore" comment without error code (consider "type: ignore[operator]" instead)
+
+[file tests/__init__.py]
+[file tests/bar.py]
+# mypy: enable-error-code="ignore-without-code"
+
+def foo() -> int: ...
+if foo: ...  # E: Function "foo" could always be true in boolean context
+42 + "no"  # type: ignore  # E: "type: ignore" comment without error code (consider "type: ignore[operator]" instead)
+
+[file tests/baz.py]
+# mypy: disable-error-code="truthy-bool"
+class Foo:
+    pass
+
+foo = Foo()
+if foo: ...
+42 + "no"  # type: ignore
+
+[file mypy.ini]
+\[mypy]
+enable_error_code = ignore-without-code, truthy-bool
+
+\[mypy-tests.*]
+disable_error_code = ignore-without-code
+
+[case testIgnoreErrorsSimple]
+# mypy: ignore-errors=True
+
+def f() -> None:
+    while 1():
+        pass
+
+[case testIgnoreErrorsInImportedModule]
+from m import C
+c = C()
+reveal_type(c.x)  # N: Revealed type is "builtins.int"
+
+[file m.py]
+# mypy: ignore-errors=True
+
+class C:
+    def f(self) -> None:
+        self.x = 1
+
+[case testIgnoreErrorsWithLambda]
+# mypy: ignore-errors=True
+
+def f(self, x=lambda: 1) -> None:
+    pass
+
+class C:
+    def f(self) -> None:
+        l = lambda: 1
+        self.x = 1
+
+[case testIgnoreErrorsWithUnsafeSuperCall_no_empty]
+
+from m import C
+
+class D(C):
+    def m(self) -> None:
+        super().m1()
+        super().m2() \
+            # E: Call to abstract method "m2" of "C" with trivial body via super() is unsafe
+        super().m3() \
+            # E: Call to abstract method "m3" of "C" with trivial body via super() is unsafe
+        super().m4() \
+            # E: Call to abstract method "m4" of "C" with trivial body via super() is unsafe
+        super().m5() \
+            # E: Call to abstract method "m5" of "C" with trivial body via super() is unsafe
+        super().m6() \
+            # E: Call to abstract method "m6" of "C" with trivial body via super() is unsafe
+        super().m7()
+
+    def m1(self) -> int:
+        return 0
+
+    def m2(self) -> int:
+        return 0
+
+    def m3(self) -> int:
+        return 0
+
+    def m4(self) -> int:
+        return 0
+
+    def m5(self) -> int:
+        return 0
+
+    def m6(self) -> int:
+        return 0
+
+[file m.py]
+# mypy: ignore-errors=True
+import abc
+
+class C:
+    @abc.abstractmethod
+    def m1(self) -> int:
+        """x"""
+        return 0
+
+    @abc.abstractmethod
+    def m2(self) -> int:
+        """doc"""
+
+    @abc.abstractmethod
+    def m3(self) -> int:
+        pass
+
+    @abc.abstractmethod
+    def m4(self) -> int: ...
+
+    @abc.abstractmethod
+    def m5(self) -> int:
+        """doc"""
+        ...
+
+    @abc.abstractmethod
+    def m6(self) -> int:
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def m7(self) -> int:
+        raise NotImplementedError()
+        pass
+
+[builtins fixtures/exception.pyi]
+
+[case testInlineErrorCodesMultipleCodes]
+# mypy: disable-error-code="truthy-bool, ignore-without-code"
+class Foo:
+    pass
+
+foo = Foo()
+if foo: ...
+42 + "no"  # type: ignore
+
+
+[case testInlinePythonVersion]
+# mypy: python-version=3.10  # E: python_version not supported in inline configuration
+
+[case testInline12342base]
+# mypy: disable_error_code = name-defined
+a
+
+[case testInline12342]
+# https://github.com/python/mypy/issues/12342
+# mypy: AMONGUS
+# mypy: sussy=baka
+# mypy: disable-error-code=name-defined python-verion="3.6"
+# mypy: disable-error-code=name-defined
+# mypy: disable-error-code = name-defined
+# mypy: python-verion="3.6"
+a
+[out]
+main:2: error: Unrecognized option: amongus = True
+main:3: error: Unrecognized option: sussy = baka
+main:4: error: disable_error_code: Invalid error code(s): name-defined python-verion=3.6
+???
+???
+main:7: error: Unrecognized option: python_verion = 3.6
+main:8: error: Name "a" is not defined
+
+[case testInline12342Two]
+# flags: --config-file tmp/mypy.ini  --show-error-codes
+a
+[file mypy.ini]
+\[mypy]
+disable_error_code = name-defined
+python_verion="3.6"
+
+[case testInline12342Three]
+# flags: --config-file tmp/mypy.ini  --show-error-codes
+a # E: Name "a" is not defined  [name-defined]
+[file mypy.ini]
+\[mypy]
+# It's unclear to me if something in quotes is, like, *supposed to* work.
+# I'd also like to record the fact that it has a warning,
+# > tmp/mypy.ini: [mypy]: disable_error_code: Invalid error code(s): "name-defined"
+# but there doesn't seem to be a way.
+disable_error_code = "name-defined"
+python_verion="3.6"
+

From 98a127349ab728ebf18085bb3414af650142f7cf Mon Sep 17 00:00:00 2001
From: wyattscarpenter <wyattscarpenter@gmail.com>
Date: Sun, 11 May 2025 18:43:00 -0700
Subject: [PATCH 02/19] manual debugging

---
 mypy/build.py                           |  1 +
 mypy/config_parser.py                   |  8 +++--
 test-data/unit/check-inline-config.test | 45 ++++++-------------------
 3 files changed, 16 insertions(+), 38 deletions(-)

diff --git a/mypy/build.py b/mypy/build.py
index 355ba861385e4..c2f51a640703c 100644
--- a/mypy/build.py
+++ b/mypy/build.py
@@ -2209,6 +2209,7 @@ def parse_file(self, *, temporary: bool = False) -> None:
     def parse_inline_configuration(self, source: str) -> None:
         """Check for inline mypy: options directive and parse them."""
         flags = get_mypy_comments(source)
+        print(f"{flags=}")
         if flags:
             changes, config_errors = parse_mypy_comments(flags, self.options)
             self.options = self.options.apply_changes(changes)
diff --git a/mypy/config_parser.py b/mypy/config_parser.py
index 0e033471d2e92..1b0db7489a9c1 100644
--- a/mypy/config_parser.py
+++ b/mypy/config_parser.py
@@ -639,7 +639,7 @@ def parse_mypy_comments(
     Returns a dictionary of options to be applied and a list of error messages
     generated.
     """
-
+    print("args", args)
     errors: list[tuple[int, str]] = []
     sections = {}
 
@@ -649,7 +649,7 @@ def parse_mypy_comments(
         # method is to create a config parser.
         parser = configparser.RawConfigParser()
         options, parse_errors = mypy_comments_to_config_map(line, template)
-
+        print("options", options)
         if "python_version" in options:
             errors.append((lineno, "python_version not supported in inline configuration"))
             del options["python_version"]
@@ -667,6 +667,7 @@ def set_strict_flags() -> None:
         new_sections, reports = parse_section(
             "", template, set_strict_flags, parser["dummy"], ini_config_types, stderr=stderr
         )
+        print(f"{new_sections=}")
         errors.extend((lineno, x) for x in stderr.getvalue().strip().split("\n") if x)
         if reports:
             errors.append((lineno, "Reports not supported in inline configuration"))
@@ -681,7 +682,8 @@ def set_strict_flags() -> None:
             )
 
         sections.update(new_sections)
-
+        print(f"{sections_updated=}")
+    print(f"{sections=}")
     return sections, errors
 
 
diff --git a/test-data/unit/check-inline-config.test b/test-data/unit/check-inline-config.test
index 101a0403a168b..57a0c51529e5b 100644
--- a/test-data/unit/check-inline-config.test
+++ b/test-data/unit/check-inline-config.test
@@ -328,45 +328,20 @@ if foo: ...
 [case testInlinePythonVersion]
 # mypy: python-version=3.10  # E: python_version not supported in inline configuration
 
-[case testInline12342base]
-# mypy: disable_error_code = name-defined
-a
-
 [case testInline12342]
 # https://github.com/python/mypy/issues/12342
-# mypy: AMONGUS
-# mypy: sussy=baka
-# mypy: disable-error-code=name-defined python-verion="3.6"
 # mypy: disable-error-code=name-defined
-# mypy: disable-error-code = name-defined
-# mypy: python-verion="3.6"
 a
-[out]
-main:2: error: Unrecognized option: amongus = True
-main:3: error: Unrecognized option: sussy = baka
-main:4: error: disable_error_code: Invalid error code(s): name-defined python-verion=3.6
-???
-???
-main:7: error: Unrecognized option: python_verion = 3.6
-main:8: error: Name "a" is not defined
-
 [case testInline12342Two]
-# flags: --config-file tmp/mypy.ini  --show-error-codes
+# mypy: disable-error-code=name-defined
+# mypy: AMONGUS
 a
-[file mypy.ini]
-\[mypy]
-disable_error_code = name-defined
-python_verion="3.6"
-
+[out]
+main:2: error: Unrecognized option: amongus = True
 [case testInline12342Three]
-# flags: --config-file tmp/mypy.ini  --show-error-codes
-a # E: Name "a" is not defined  [name-defined]
-[file mypy.ini]
-\[mypy]
-# It's unclear to me if something in quotes is, like, *supposed to* work.
-# I'd also like to record the fact that it has a warning,
-# > tmp/mypy.ini: [mypy]: disable_error_code: Invalid error code(s): "name-defined"
-# but there doesn't seem to be a way.
-disable_error_code = "name-defined"
-python_verion="3.6"
-
+# mypy: AMONGUS
+# mypy: disable-error-code=name-defined
+a
+[out]
+main:1: error: Unrecognized option: amongus = True
+asdfasdfasdf
\ No newline at end of file

From 1ee4784c0e9b45992fdbba6479e3d879bef0d4e1 Mon Sep 17 00:00:00 2001
From: wyattscarpenter <wyattscarpenter@gmail.com>
Date: Sun, 11 May 2025 18:58:18 -0700
Subject: [PATCH 03/19] hone in on problem

---
 mypy/config_parser.py                   |  4 ++--
 test-data/unit/check-inline-config.test | 11 ++++++++++-
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/mypy/config_parser.py b/mypy/config_parser.py
index 1b0db7489a9c1..92615b25193e1 100644
--- a/mypy/config_parser.py
+++ b/mypy/config_parser.py
@@ -663,7 +663,7 @@ def parse_mypy_comments(
         def set_strict_flags() -> None:
             nonlocal strict_found
             strict_found = True
-
+        # HERE! vvv
         new_sections, reports = parse_section(
             "", template, set_strict_flags, parser["dummy"], ini_config_types, stderr=stderr
         )
@@ -682,7 +682,7 @@ def set_strict_flags() -> None:
             )
 
         sections.update(new_sections)
-        print(f"{sections_updated=}")
+        print(f"sections_updated={sections}")
     print(f"{sections=}")
     return sections, errors
 
diff --git a/test-data/unit/check-inline-config.test b/test-data/unit/check-inline-config.test
index 57a0c51529e5b..0bfa42169d679 100644
--- a/test-data/unit/check-inline-config.test
+++ b/test-data/unit/check-inline-config.test
@@ -344,4 +344,13 @@ main:2: error: Unrecognized option: amongus = True
 a
 [out]
 main:1: error: Unrecognized option: amongus = True
-asdfasdfasdf
\ No newline at end of file
+asdfasdfasdf
+[case testInline12342Four]
+# mypy: warn_unused_ignores
+x = 1 # type: ignore # E: Unused "type: ignore" comment
+[case testInline12342Five]
+# mypy: warn_unused_ignores
+# mypy: AMONGUS
+x = 1 # type: ignore # E: Unused "type: ignore" comment
+[out]
+main:2: error: Unrecognized option: amongus = True
\ No newline at end of file

From 61b226ef30e60fc3df5d92ea195b7ccd736dba07 Mon Sep 17 00:00:00 2001
From: wyattscarpenter <wyattscarpenter@gmail.com>
Date: Sun, 11 May 2025 19:00:59 -0700
Subject: [PATCH 04/19] hone in on problem

---
 test-data/unit/check-inline-config.test | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/test-data/unit/check-inline-config.test b/test-data/unit/check-inline-config.test
index 0bfa42169d679..cde5c83b95aae 100644
--- a/test-data/unit/check-inline-config.test
+++ b/test-data/unit/check-inline-config.test
@@ -353,4 +353,8 @@ x = 1 # type: ignore # E: Unused "type: ignore" comment
 # mypy: AMONGUS
 x = 1 # type: ignore # E: Unused "type: ignore" comment
 [out]
-main:2: error: Unrecognized option: amongus = True
\ No newline at end of file
+main:2: error: Unrecognized option: amongus = True
+[case 12342]
+# mypy: disable-error-code=name-defined
+# mypy: warn_unused_ignores
+x = 1 # type: ignore # E: Unused "type: ignore" comment

From 14eca24e5fa0be7505f792799fefe37de416d217 Mon Sep 17 00:00:00 2001
From: wyattscarpenter <wyattscarpenter@gmail.com>
Date: Sun, 11 May 2025 19:41:40 -0700
Subject: [PATCH 05/19] solve the problem

---
 mypy/config_parser.py                   |  9 ++++--
 test-data/unit/check-inline-config.test | 38 +++++++++++++++++--------
 2 files changed, 33 insertions(+), 14 deletions(-)

diff --git a/mypy/config_parser.py b/mypy/config_parser.py
index 92615b25193e1..82ab30e05b987 100644
--- a/mypy/config_parser.py
+++ b/mypy/config_parser.py
@@ -663,7 +663,7 @@ def parse_mypy_comments(
         def set_strict_flags() -> None:
             nonlocal strict_found
             strict_found = True
-        # HERE! vvv
+
         new_sections, reports = parse_section(
             "", template, set_strict_flags, parser["dummy"], ini_config_types, stderr=stderr
         )
@@ -680,7 +680,12 @@ def set_strict_flags() -> None:
                     '(see "mypy -h" for the list of flags enabled in strict mode)',
                 )
             )
-
+        # Because this is currently special-cased
+        # (the new_sections for an inline config without these two options always includes
+        # {'disable_error_code': [], 'enable_error_code': []}, which overwrites the old ones),
+        # we have to manipulate them specially.
+        new_sections['enable_error_code'] = list(set(new_sections['enable_error_code'] + sections.get('enable_error_code', [])))
+        new_sections['disable_error_code'] = list(set(new_sections['disable_error_code'] + sections.get('disable_error_code', [])))
         sections.update(new_sections)
         print(f"sections_updated={sections}")
     print(f"{sections=}")
diff --git a/test-data/unit/check-inline-config.test b/test-data/unit/check-inline-config.test
index cde5c83b95aae..c808950c807a2 100644
--- a/test-data/unit/check-inline-config.test
+++ b/test-data/unit/check-inline-config.test
@@ -324,37 +324,51 @@ foo = Foo()
 if foo: ...
 42 + "no"  # type: ignore
 
-
 [case testInlinePythonVersion]
 # mypy: python-version=3.10  # E: python_version not supported in inline configuration
 
-[case testInline12342]
-# https://github.com/python/mypy/issues/12342
+[case testInlineErrorCodesArentRuinedByOthersBaseCase]
 # mypy: disable-error-code=name-defined
 a
-[case testInline12342Two]
+
+[case testInlineErrorCodesArentRuinedByOthersInvalid]
 # mypy: disable-error-code=name-defined
 # mypy: AMONGUS
 a
 [out]
 main:2: error: Unrecognized option: amongus = True
-[case testInline12342Three]
+
+[case testInlineErrorCodesArentRuinedByOthersInvalidBefore]
 # mypy: AMONGUS
 # mypy: disable-error-code=name-defined
 a
 [out]
 main:1: error: Unrecognized option: amongus = True
-asdfasdfasdf
-[case testInline12342Four]
+
+[case testInlineErrorCodesArentRuinedByOthersSe]
+# mypy: disable-error-code=name-defined
+# mypy: strict-equality
+def is_magic(x: bytes) -> bool:
+    y
+    return x == 'magic' # E: Unsupported left operand type for == ("bytes")
+
+[case testInlineConfigErrorCodesOffAndOn]
+# mypy: disable-error-code=name-defined
+# mypy: enable-error-code=name-defined
+a # E: Name "a" is not defined
+
+[case testInlineConfigErrorCodesOnAndOff]
+# mypy: enable-error-code=name-defined
+# mypy: disable-error-code=name-defined
+a # E: Name "a" is not defined
+
+[case testInlineConfigBaseCaseWui]
 # mypy: warn_unused_ignores
 x = 1 # type: ignore # E: Unused "type: ignore" comment
-[case testInline12342Five]
+
+[case testInlineConfigIsntRuinedByOthersInvalidWui]
 # mypy: warn_unused_ignores
 # mypy: AMONGUS
 x = 1 # type: ignore # E: Unused "type: ignore" comment
 [out]
 main:2: error: Unrecognized option: amongus = True
-[case 12342]
-# mypy: disable-error-code=name-defined
-# mypy: warn_unused_ignores
-x = 1 # type: ignore # E: Unused "type: ignore" comment

From 45566a43580512eabc9c4f523aa86b62b385cef1 Mon Sep 17 00:00:00 2001
From: wyattscarpenter <wyattscarpenter@gmail.com>
Date: Sun, 11 May 2025 19:46:00 -0700
Subject: [PATCH 06/19] cleanup

---
 mypy/build.py         |  1 -
 mypy/config_parser.py | 17 ++++++++---------
 2 files changed, 8 insertions(+), 10 deletions(-)

diff --git a/mypy/build.py b/mypy/build.py
index c2f51a640703c..355ba861385e4 100644
--- a/mypy/build.py
+++ b/mypy/build.py
@@ -2209,7 +2209,6 @@ def parse_file(self, *, temporary: bool = False) -> None:
     def parse_inline_configuration(self, source: str) -> None:
         """Check for inline mypy: options directive and parse them."""
         flags = get_mypy_comments(source)
-        print(f"{flags=}")
         if flags:
             changes, config_errors = parse_mypy_comments(flags, self.options)
             self.options = self.options.apply_changes(changes)
diff --git a/mypy/config_parser.py b/mypy/config_parser.py
index 82ab30e05b987..bfa216923c358 100644
--- a/mypy/config_parser.py
+++ b/mypy/config_parser.py
@@ -639,7 +639,6 @@ def parse_mypy_comments(
     Returns a dictionary of options to be applied and a list of error messages
     generated.
     """
-    print("args", args)
     errors: list[tuple[int, str]] = []
     sections = {}
 
@@ -649,7 +648,6 @@ def parse_mypy_comments(
         # method is to create a config parser.
         parser = configparser.RawConfigParser()
         options, parse_errors = mypy_comments_to_config_map(line, template)
-        print("options", options)
         if "python_version" in options:
             errors.append((lineno, "python_version not supported in inline configuration"))
             del options["python_version"]
@@ -667,7 +665,6 @@ def set_strict_flags() -> None:
         new_sections, reports = parse_section(
             "", template, set_strict_flags, parser["dummy"], ini_config_types, stderr=stderr
         )
-        print(f"{new_sections=}")
         errors.extend((lineno, x) for x in stderr.getvalue().strip().split("\n") if x)
         if reports:
             errors.append((lineno, "Reports not supported in inline configuration"))
@@ -681,14 +678,16 @@ def set_strict_flags() -> None:
                 )
             )
         # Because this is currently special-cased
-        # (the new_sections for an inline config without these two options always includes
-        # {'disable_error_code': [], 'enable_error_code': []}, which overwrites the old ones),
+        # (the new_sections for an inline config *always* includes 'disable_error_code' and
+        # 'enable_error_code' fields, usually empty, which overwrite the old ones),
         # we have to manipulate them specially.
-        new_sections['enable_error_code'] = list(set(new_sections['enable_error_code'] + sections.get('enable_error_code', [])))
-        new_sections['disable_error_code'] = list(set(new_sections['disable_error_code'] + sections.get('disable_error_code', [])))
+        new_sections["enable_error_code"] = list(
+            set(new_sections["enable_error_code"] + sections.get("enable_error_code", []))
+        )
+        new_sections["disable_error_code"] = list(
+            set(new_sections["disable_error_code"] + sections.get("disable_error_code", []))
+        )
         sections.update(new_sections)
-        print(f"sections_updated={sections}")
-    print(f"{sections=}")
     return sections, errors
 
 

From 3f51ebb19582417e56aab94f0763ee93c46d3f07 Mon Sep 17 00:00:00 2001
From: wyattscarpenter <wyattscarpenter@gmail.com>
Date: Sun, 11 May 2025 19:58:41 -0700
Subject: [PATCH 07/19] add another test, for good luck

---
 test-data/unit/check-inline-config.test | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/test-data/unit/check-inline-config.test b/test-data/unit/check-inline-config.test
index c808950c807a2..ac3e32f3c7afc 100644
--- a/test-data/unit/check-inline-config.test
+++ b/test-data/unit/check-inline-config.test
@@ -362,6 +362,16 @@ a # E: Name "a" is not defined
 # mypy: disable-error-code=name-defined
 a # E: Name "a" is not defined
 
+[case testConfigFileErrorCodesOnAndOff]
+# flags: --config-file tmp/mypy.ini
+import foo
+[file foo.py]
+42 + "no"  # type: ignore  # E: "type: ignore" comment without error code (consider "type: ignore[operator]" instead)
+[file mypy.ini]
+\[mypy]
+enable_error_code = ignore-without-code
+disable_error_code = ignore-without-code
+
 [case testInlineConfigBaseCaseWui]
 # mypy: warn_unused_ignores
 x = 1 # type: ignore # E: Unused "type: ignore" comment

From 0253c0519b1aa1ea8ed63a26a41394af28e6a789 Mon Sep 17 00:00:00 2001
From: wyattscarpenter <wyattscarpenter@gmail.com>
Date: Sun, 11 May 2025 20:25:52 -0700
Subject: [PATCH 08/19] oh, right, I need types or whatever

---
 mypy/config_parser.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/mypy/config_parser.py b/mypy/config_parser.py
index bfa216923c358..dfdb40069529d 100644
--- a/mypy/config_parser.py
+++ b/mypy/config_parser.py
@@ -533,7 +533,7 @@ def parse_section(
                 else:
                     continue
             ct = type(dv)
-        v: Any = None
+        v = None
         try:
             if ct is bool:
                 if isinstance(section, dict):
@@ -681,6 +681,10 @@ def set_strict_flags() -> None:
         # (the new_sections for an inline config *always* includes 'disable_error_code' and
         # 'enable_error_code' fields, usually empty, which overwrite the old ones),
         # we have to manipulate them specially.
+        if "enable_error_code" in new_sections:
+            assert isinstance(new_sections["enable_error_code"], list)
+        if "disable_error_code" in new_sections:
+            assert isinstance(new_sections["disable_error_code"], list)
         new_sections["enable_error_code"] = list(
             set(new_sections["enable_error_code"] + sections.get("enable_error_code", []))
         )

From 000f25fd8cf83ae62afb3a19fe4c40fe817dae9c Mon Sep 17 00:00:00 2001
From: wyattscarpenter <wyattscarpenter@gmail.com>
Date: Sun, 11 May 2025 20:53:03 -0700
Subject: [PATCH 09/19] solve the typing problem

---
 mypy/config_parser.py | 20 ++++++++------------
 1 file changed, 8 insertions(+), 12 deletions(-)

diff --git a/mypy/config_parser.py b/mypy/config_parser.py
index dfdb40069529d..a5f9154f611c8 100644
--- a/mypy/config_parser.py
+++ b/mypy/config_parser.py
@@ -16,7 +16,7 @@
     import tomli as tomllib
 
 from collections.abc import Mapping, MutableMapping, Sequence
-from typing import Any, Callable, Final, TextIO, Union
+from typing import Any, Callable, Final, TextIO, TypedDict, Union
 from typing_extensions import TypeAlias as _TypeAlias
 
 from mypy import defaults
@@ -640,7 +640,7 @@ def parse_mypy_comments(
     generated.
     """
     errors: list[tuple[int, str]] = []
-    sections = {}
+    sections: dict[str, object] = {"enable_error_code": [], "disable_error_code": []}
 
     for lineno, line in args:
         # In order to easily match the behavior for bools, we abuse configparser.
@@ -681,16 +681,12 @@ def set_strict_flags() -> None:
         # (the new_sections for an inline config *always* includes 'disable_error_code' and
         # 'enable_error_code' fields, usually empty, which overwrite the old ones),
         # we have to manipulate them specially.
-        if "enable_error_code" in new_sections:
-            assert isinstance(new_sections["enable_error_code"], list)
-        if "disable_error_code" in new_sections:
-            assert isinstance(new_sections["disable_error_code"], list)
-        new_sections["enable_error_code"] = list(
-            set(new_sections["enable_error_code"] + sections.get("enable_error_code", []))
-        )
-        new_sections["disable_error_code"] = list(
-            set(new_sections["disable_error_code"] + sections.get("disable_error_code", []))
-        )
+        assert isinstance(neec:=new_sections.get("enable_error_code", []), list)
+        assert isinstance(eec:=sections.get("enable_error_code", []), list)
+        assert isinstance(ndec:=new_sections.get("disable_error_code", []), list)
+        assert isinstance(dec:=new_sections.get("disable_error_code", []), list)
+        new_sections["enable_error_code"] = list(set(neec + eec))
+        new_sections["disable_error_code"] = list(set(ndec + dec))
         sections.update(new_sections)
     return sections, errors
 

From cecae56414d38800a96a8b694874ce70a4d0cf40 Mon Sep 17 00:00:00 2001
From: wyattscarpenter <wyattscarpenter@gmail.com>
Date: Sun, 11 May 2025 20:55:51 -0700
Subject: [PATCH 10/19] final(?) touches

---
 mypy/config_parser.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mypy/config_parser.py b/mypy/config_parser.py
index a5f9154f611c8..4b8c375405e6d 100644
--- a/mypy/config_parser.py
+++ b/mypy/config_parser.py
@@ -16,7 +16,7 @@
     import tomli as tomllib
 
 from collections.abc import Mapping, MutableMapping, Sequence
-from typing import Any, Callable, Final, TextIO, TypedDict, Union
+from typing import Any, Callable, Final, TextIO, Union
 from typing_extensions import TypeAlias as _TypeAlias
 
 from mypy import defaults
@@ -681,6 +681,7 @@ def set_strict_flags() -> None:
         # (the new_sections for an inline config *always* includes 'disable_error_code' and
         # 'enable_error_code' fields, usually empty, which overwrite the old ones),
         # we have to manipulate them specially.
+        # This could use a refactor, but so could the whole subsystem.
         assert isinstance(neec:=new_sections.get("enable_error_code", []), list)
         assert isinstance(eec:=sections.get("enable_error_code", []), list)
         assert isinstance(ndec:=new_sections.get("disable_error_code", []), list)

From b6a12df6521cbfa431d6c1a1023b6fdb741f2af4 Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Mon, 12 May 2025 03:58:12 +0000
Subject: [PATCH 11/19] [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci
---
 mypy/config_parser.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/mypy/config_parser.py b/mypy/config_parser.py
index 4b8c375405e6d..635600492c797 100644
--- a/mypy/config_parser.py
+++ b/mypy/config_parser.py
@@ -682,10 +682,10 @@ def set_strict_flags() -> None:
         # 'enable_error_code' fields, usually empty, which overwrite the old ones),
         # we have to manipulate them specially.
         # This could use a refactor, but so could the whole subsystem.
-        assert isinstance(neec:=new_sections.get("enable_error_code", []), list)
-        assert isinstance(eec:=sections.get("enable_error_code", []), list)
-        assert isinstance(ndec:=new_sections.get("disable_error_code", []), list)
-        assert isinstance(dec:=new_sections.get("disable_error_code", []), list)
+        assert isinstance(neec := new_sections.get("enable_error_code", []), list)
+        assert isinstance(eec := sections.get("enable_error_code", []), list)
+        assert isinstance(ndec := new_sections.get("disable_error_code", []), list)
+        assert isinstance(dec := new_sections.get("disable_error_code", []), list)
         new_sections["enable_error_code"] = list(set(neec + eec))
         new_sections["disable_error_code"] = list(set(ndec + dec))
         sections.update(new_sections)

From 8a772092bb756d5cf148148b48e597fa0262f66a Mon Sep 17 00:00:00 2001
From: wyattscarpenter <wyattscarpenter@gmail.com>
Date: Mon, 12 May 2025 02:01:15 -0700
Subject: [PATCH 12/19] fix the type problem more reliably

---
 mypy/config_parser.py | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/mypy/config_parser.py b/mypy/config_parser.py
index 635600492c797..f8d332266e882 100644
--- a/mypy/config_parser.py
+++ b/mypy/config_parser.py
@@ -682,12 +682,18 @@ def set_strict_flags() -> None:
         # 'enable_error_code' fields, usually empty, which overwrite the old ones),
         # we have to manipulate them specially.
         # This could use a refactor, but so could the whole subsystem.
-        assert isinstance(neec := new_sections.get("enable_error_code", []), list)
-        assert isinstance(eec := sections.get("enable_error_code", []), list)
-        assert isinstance(ndec := new_sections.get("disable_error_code", []), list)
-        assert isinstance(dec := new_sections.get("disable_error_code", []), list)
-        new_sections["enable_error_code"] = list(set(neec + eec))
-        new_sections["disable_error_code"] = list(set(ndec + dec))
+        if (
+            "enable_error_code" in new_sections
+            and isinstance(neec := new_sections["enable_error_code"], list)
+            and isinstance(eec := sections.get("enable_error_code", []), list)
+        ):
+            new_sections["enable_error_code"] = list(set(neec + eec))
+        if (
+            "disable_error_code" in new_sections
+            and isinstance(ndec := new_sections["enable_error_code"], list)
+            and isinstance(dec := sections.get("enable_error_code", []), list)
+        ):
+            new_sections["enable_error_code"] = list(set(ndec + dec))
         sections.update(new_sections)
     return sections, errors
 

From 4bac4bd2ca2d2337d455a6f64176d8e4bd6f61dd Mon Sep 17 00:00:00 2001
From: wyattscarpenter <wyattscarpenter@gmail.com>
Date: Mon, 12 May 2025 03:29:05 -0700
Subject: [PATCH 13/19] was this a... loadbearing any??

---
 mypy/config_parser.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mypy/config_parser.py b/mypy/config_parser.py
index f8d332266e882..ff56b9ba2615a 100644
--- a/mypy/config_parser.py
+++ b/mypy/config_parser.py
@@ -533,7 +533,7 @@ def parse_section(
                 else:
                     continue
             ct = type(dv)
-        v = None
+        v: Any = None
         try:
             if ct is bool:
                 if isinstance(section, dict):

From e44f888a20298b1e3805da8c1cafc572c0c41880 Mon Sep 17 00:00:00 2001
From: wyattscarpenter <wyattscarpenter@gmail.com>
Date: Mon, 12 May 2025 10:20:08 -0700
Subject: [PATCH 14/19] fix the problem again

---
 mypy/config_parser.py                   | 13 ++--
 mypy/errorcodes.py                      |  3 +
 mypy/options.py                         |  3 +-
 test-data/unit/check-inline-config.test | 93 +++++++++++++++++++++++++
 4 files changed, 107 insertions(+), 5 deletions(-)

diff --git a/mypy/config_parser.py b/mypy/config_parser.py
index ff56b9ba2615a..7060f0de65c19 100644
--- a/mypy/config_parser.py
+++ b/mypy/config_parser.py
@@ -665,6 +665,7 @@ def set_strict_flags() -> None:
         new_sections, reports = parse_section(
             "", template, set_strict_flags, parser["dummy"], ini_config_types, stderr=stderr
         )
+        print("new_sections", new_sections)
         errors.extend((lineno, x) for x in stderr.getvalue().strip().split("\n") if x)
         if reports:
             errors.append((lineno, "Reports not supported in inline configuration"))
@@ -687,14 +688,18 @@ def set_strict_flags() -> None:
             and isinstance(neec := new_sections["enable_error_code"], list)
             and isinstance(eec := sections.get("enable_error_code", []), list)
         ):
-            new_sections["enable_error_code"] = list(set(neec + eec))
+            print("bing", neec, eec)
+            new_sections["enable_error_code"] = sorted(set(neec + eec))
         if (
             "disable_error_code" in new_sections
-            and isinstance(ndec := new_sections["enable_error_code"], list)
-            and isinstance(dec := sections.get("enable_error_code", []), list)
+            and isinstance(ndec := new_sections["disable_error_code"], list)
+            and isinstance(dec := sections.get("disable_error_code", []), list)
         ):
-            new_sections["enable_error_code"] = list(set(ndec + dec))
+            print("bong", ndec, dec)
+            new_sections["disable_error_code"] = sorted(set(ndec + dec))
         sections.update(new_sections)
+        print("sections", sections)
+    print("sections final", sections)
     return sections, errors
 
 
diff --git a/mypy/errorcodes.py b/mypy/errorcodes.py
index 8f650aa30605f..485251408496d 100644
--- a/mypy/errorcodes.py
+++ b/mypy/errorcodes.py
@@ -37,6 +37,9 @@ def __init__(
     def __str__(self) -> str:
         return f"<ErrorCode {self.code}>"
 
+    def __repr__(self) -> str:
+        """This doesn't fulfill the goals of repr but it's better than the default view."""
+        return self.code
     def __eq__(self, other: object) -> bool:
         if not isinstance(other, ErrorCode):
             return False
diff --git a/mypy/options.py b/mypy/options.py
index 52afd27211ed0..bfabf8d517a13 100644
--- a/mypy/options.py
+++ b/mypy/options.py
@@ -492,6 +492,7 @@ def apply_changes(self, changes: dict[str, object]) -> Options:
         # Similar to global codes enabling overrides disabling, so we start from latter.
         new_options.disabled_error_codes = self.disabled_error_codes.copy()
         new_options.enabled_error_codes = self.enabled_error_codes.copy()
+        print(f"{(new_options.disabled_error_codes, new_options.disable_error_code, new_options.enabled_error_codes, new_options.enable_error_code)=}")
         for code_str in new_options.disable_error_code:
             code = error_codes[code_str]
             new_options.disabled_error_codes.add(code)
@@ -500,7 +501,7 @@ def apply_changes(self, changes: dict[str, object]) -> Options:
             code = error_codes[code_str]
             new_options.enabled_error_codes.add(code)
             new_options.disabled_error_codes.discard(code)
-
+        print(f"{(new_options.disabled_error_codes, new_options.enabled_error_codes)=}")
         return new_options
 
     def compare_stable(self, other_snapshot: dict[str, object]) -> bool:
diff --git a/test-data/unit/check-inline-config.test b/test-data/unit/check-inline-config.test
index ac3e32f3c7afc..e69b80d54da8c 100644
--- a/test-data/unit/check-inline-config.test
+++ b/test-data/unit/check-inline-config.test
@@ -211,6 +211,99 @@ enable_error_code = ignore-without-code, truthy-bool
 \[mypy-tests.*]
 disable_error_code = ignore-without-code
 
+[case testInlineErrorCodesOverrideConfigSmall]
+# flags: --config-file tmp/mypy.ini
+import tests.baz
+[file tests/__init__.py]
+[file tests/baz.py]
+42 + "no"  # type: ignore
+
+[file mypy.ini]
+\[mypy]
+enable_error_code = ignore-without-code, truthy-bool
+
+\[mypy-tests.*]
+disable_error_code = ignore-without-code
+
+[case testInlineErrorCodesOverrideConfigSmall2]
+# flags: --config-file tmp/mypy.ini
+import tests.bar
+import tests.baz
+[file tests/__init__.py]
+[file tests/baz.py]
+42 + "no"  # type: ignore
+[file tests/bar.py]
+# mypy: enable-error-code="ignore-without-code"
+
+def foo() -> int: ...
+if foo: ...  # E: Function "foo" could always be true in boolean context
+42 + "no"  # type: ignore  # E: "type: ignore" comment without error code (consider "type: ignore[operator]" instead)
+
+[file mypy.ini]
+\[mypy]
+enable_error_code = ignore-without-code, truthy-bool
+
+\[mypy-tests.*]
+disable_error_code = ignore-without-code
+
+
+[case testInlineErrorCodesOverrideConfigSmallBackward]
+# flags: --config-file tmp/mypy.ini
+import tests.bar
+import tests.baz
+[file tests/__init__.py]
+[file tests/baz.py]
+42 + "no"  # type: ignore # E: "type: ignore" comment without error code (consider "type: ignore[operator]" instead)
+[file tests/bar.py]
+# mypy: disable-error-code="ignore-without-code"
+42 + "no"  # type: ignore 
+
+[file mypy.ini]
+\[mypy]
+enable_error_code = ignore-without-code, truthy-bool
+
+\[mypy-tests.*]
+enable_error_code = ignore-without-code
+
+[case testInlineOverrideConfig]
+# flags: --config-file tmp/mypy.ini
+import foo
+import tests.bar
+import tests.baz
+[file foo.py]
+# mypy: disable-error-code="truthy-bool"
+class Foo:
+    pass
+
+foo = Foo()
+if foo: ...
+42 # type: ignore  # E: Unused "type: ignore" comment
+
+[file tests/__init__.py]
+[file tests/bar.py]
+# mypy: warn_unused_ignores
+
+def foo() -> int: ...
+if foo: ...  # E: Function "foo" could always be true in boolean context
+42 # type: ignore  # E: Unused "type: ignore" comment
+
+[file tests/baz.py]
+# mypy: disable-error-code="truthy-bool"
+class Foo:
+    pass
+
+foo = Foo()
+if foo: ...
+42 # type: ignore
+
+[file mypy.ini]
+\[mypy]
+warn_unused_ignores = True
+
+\[mypy-tests.*]
+warn_unused_ignores = False
+
+
 [case testIgnoreErrorsSimple]
 # mypy: ignore-errors=True
 

From 95a8223069396c3f9afa78cc4f92be2ab436f19d Mon Sep 17 00:00:00 2001
From: wyattscarpenter <wyattscarpenter@gmail.com>
Date: Mon, 12 May 2025 10:22:37 -0700
Subject: [PATCH 15/19] clean up print statements

---
 mypy/config_parser.py | 5 -----
 mypy/options.py       | 2 --
 2 files changed, 7 deletions(-)

diff --git a/mypy/config_parser.py b/mypy/config_parser.py
index 7060f0de65c19..8ada374f1dfaa 100644
--- a/mypy/config_parser.py
+++ b/mypy/config_parser.py
@@ -665,7 +665,6 @@ def set_strict_flags() -> None:
         new_sections, reports = parse_section(
             "", template, set_strict_flags, parser["dummy"], ini_config_types, stderr=stderr
         )
-        print("new_sections", new_sections)
         errors.extend((lineno, x) for x in stderr.getvalue().strip().split("\n") if x)
         if reports:
             errors.append((lineno, "Reports not supported in inline configuration"))
@@ -688,18 +687,14 @@ def set_strict_flags() -> None:
             and isinstance(neec := new_sections["enable_error_code"], list)
             and isinstance(eec := sections.get("enable_error_code", []), list)
         ):
-            print("bing", neec, eec)
             new_sections["enable_error_code"] = sorted(set(neec + eec))
         if (
             "disable_error_code" in new_sections
             and isinstance(ndec := new_sections["disable_error_code"], list)
             and isinstance(dec := sections.get("disable_error_code", []), list)
         ):
-            print("bong", ndec, dec)
             new_sections["disable_error_code"] = sorted(set(ndec + dec))
         sections.update(new_sections)
-        print("sections", sections)
-    print("sections final", sections)
     return sections, errors
 
 
diff --git a/mypy/options.py b/mypy/options.py
index bfabf8d517a13..eb059d1b4dc8f 100644
--- a/mypy/options.py
+++ b/mypy/options.py
@@ -492,7 +492,6 @@ def apply_changes(self, changes: dict[str, object]) -> Options:
         # Similar to global codes enabling overrides disabling, so we start from latter.
         new_options.disabled_error_codes = self.disabled_error_codes.copy()
         new_options.enabled_error_codes = self.enabled_error_codes.copy()
-        print(f"{(new_options.disabled_error_codes, new_options.disable_error_code, new_options.enabled_error_codes, new_options.enable_error_code)=}")
         for code_str in new_options.disable_error_code:
             code = error_codes[code_str]
             new_options.disabled_error_codes.add(code)
@@ -501,7 +500,6 @@ def apply_changes(self, changes: dict[str, object]) -> Options:
             code = error_codes[code_str]
             new_options.enabled_error_codes.add(code)
             new_options.disabled_error_codes.discard(code)
-        print(f"{(new_options.disabled_error_codes, new_options.enabled_error_codes)=}")
         return new_options
 
     def compare_stable(self, other_snapshot: dict[str, object]) -> bool:

From 6c0b38bbd530f7b505e1c553366b9601279daa09 Mon Sep 17 00:00:00 2001
From: wyattscarpenter <wyattscarpenter@gmail.com>
Date: Mon, 12 May 2025 10:25:04 -0700
Subject: [PATCH 16/19] unix line-endings in the tests...

---
 test-data/unit/check-inline-config.test | 954 ++++++++++++------------
 1 file changed, 477 insertions(+), 477 deletions(-)

diff --git a/test-data/unit/check-inline-config.test b/test-data/unit/check-inline-config.test
index e69b80d54da8c..048dd8522847b 100644
--- a/test-data/unit/check-inline-config.test
+++ b/test-data/unit/check-inline-config.test
@@ -1,477 +1,477 @@
--- Checks for 'mypy: option' directives inside files
-
-[case testInlineSimple1]
-
-# mypy: disallow-any-generics, no-warn-no-return
-
-from typing import List, Optional
-def foo() -> Optional[List]:  # E: Missing type parameters for generic type "List"
-    20
-
-[builtins fixtures/list.pyi]
-
-[case testInlineSimple2]
-
-# mypy: disallow-any-generics
-# mypy: no-warn-no-return
-
-from typing import List, Optional
-def foo() -> Optional[List]:  # E: Missing type parameters for generic type "List"
-    20
-
-[builtins fixtures/list.pyi]
-
-[case testInlineSimple3]
-
-# mypy: disallow-any-generics=true, warn-no-return=0
-
-from typing import List, Optional
-def foo() -> Optional[List]:  # E: Missing type parameters for generic type "List"
-    20
-
-[builtins fixtures/list.pyi]
-
-
-[case testInlineSimple4]
-
-# mypy: disallow-any-generics = true, warn-no-return = 0
-
-from typing import List, Optional
-def foo() -> Optional[List]:  # E: Missing type parameters for generic type "List"
-    20
-
-[builtins fixtures/list.pyi]
-
-[case testInlineList]
-
-# mypy: disallow-any-generics,always-false="FOO,BAR"
-
-from typing import List
-
-def foo(FOO: bool, BAR: bool) -> List:  # E: Missing type parameters for generic type "List"
-    if FOO or BAR:
-        1+'lol'
-    return []
-
-[builtins fixtures/list.pyi]
-
-[case testInlineInvert1]
-# flags: --disallow-any-generics --allow-untyped-globals
-import a
-[file a.py]
-# mypy: allow-any-generics, disallow-untyped-globals
-
-x = []  # E: Need type annotation for "x" (hint: "x: List[<type>] = ...")
-
-from typing import List
-def foo() -> List:
-    ...
-
-[builtins fixtures/list.pyi]
-
-[case testInlineInvert2]
-
-import a
-[file a.py]
-# mypy: no-always-true
-
-[out]
-tmp/a.py:1: error: Can not invert non-boolean key always_true
-
-[case testInlineIncremental1]
-
-import a
-[file a.py]
-# mypy: disallow-any-generics, no-warn-no-return
-
-from typing import List, Optional
-def foo() -> Optional[List]:
-    20
-
-[file a.py.2]
-# mypy: no-warn-no-return
-
-from typing import List, Optional
-def foo() -> Optional[List]:
-    20
-
-[file a.py.3]
-from typing import List, Optional
-def foo() -> Optional[List]:
-    20
-[out]
-tmp/a.py:4: error: Missing type parameters for generic type "List"
-[out2]
-[out3]
-tmp/a.py:2: error: Missing return statement
-
-[builtins fixtures/list.pyi]
-
-[case testInlineIncremental2]
-
-# flags2: --disallow-any-generics
-import a
-[file a.py]
-# mypy: no-warn-no-return
-
-from typing import Optional, List
-def foo() -> Optional[List]:
-    20
-
-[file b.py.2]
-# no changes to a.py, but flag change should cause recheck
-
-[out]
-[out2]
-tmp/a.py:4: error: Missing type parameters for generic type "List"
-
-[builtins fixtures/list.pyi]
-
-[case testInlineIncremental3]
-import a, b
-[file a.py]
-# mypy: no-warn-no-return
-from typing import Optional
-
-def foo() -> Optional[int]:
-    20
-
-[file b.py]
-[file b.py.2]
-# no changes to a.py and we want to make sure it isn't rechecked
-[out]
-[out2]
-[rechecked b]
-
-[case testInlineError1]
-# mypy: invalid-whatever
-# mypy: no-warn-no-return; no-strict-optional
-# mypy: always-true=FOO,BAR
-# mypy: always-true="FOO,BAR
-[out]
-main:1: error: Unrecognized option: invalid_whatever = True
-main:2: error: Unrecognized option: no_warn_no_return; no_strict_optional = True
-main:3: error: Unrecognized option: bar = True
-main:4: error: Unterminated quote in configuration comment
-
-[case testInlineError2]
-# mypy: skip-file
-[out]
-main:1: error: Unrecognized option: skip_file = True
-
-[case testInlineStrict]
-# mypy: strict
-[out]
-main:1: error: Setting "strict" not supported in inline configuration: specify it in a configuration file instead, or set individual inline flags (see "mypy -h" for the list of flags enabled in strict mode)
-
-[case testInlineErrorCodes]
-# mypy: enable-error-code="ignore-without-code,truthy-bool"
-class Foo:
-    pass
-
-foo = Foo()
-if foo: ...  # E: "__main__.foo" has type "Foo" which does not implement __bool__ or __len__ so it could always be true in boolean context
-42 + "no"  # type: ignore  # E: "type: ignore" comment without error code (consider "type: ignore[operator]" instead)
-
-[case testInlineErrorCodesOverrideConfig]
-# flags: --config-file tmp/mypy.ini
-import foo
-import tests.bar
-import tests.baz
-[file foo.py]
-# mypy: disable-error-code="truthy-bool"
-class Foo:
-    pass
-
-foo = Foo()
-if foo: ...
-42 + "no"  # type: ignore  # E: "type: ignore" comment without error code (consider "type: ignore[operator]" instead)
-
-[file tests/__init__.py]
-[file tests/bar.py]
-# mypy: enable-error-code="ignore-without-code"
-
-def foo() -> int: ...
-if foo: ...  # E: Function "foo" could always be true in boolean context
-42 + "no"  # type: ignore  # E: "type: ignore" comment without error code (consider "type: ignore[operator]" instead)
-
-[file tests/baz.py]
-# mypy: disable-error-code="truthy-bool"
-class Foo:
-    pass
-
-foo = Foo()
-if foo: ...
-42 + "no"  # type: ignore
-
-[file mypy.ini]
-\[mypy]
-enable_error_code = ignore-without-code, truthy-bool
-
-\[mypy-tests.*]
-disable_error_code = ignore-without-code
-
-[case testInlineErrorCodesOverrideConfigSmall]
-# flags: --config-file tmp/mypy.ini
-import tests.baz
-[file tests/__init__.py]
-[file tests/baz.py]
-42 + "no"  # type: ignore
-
-[file mypy.ini]
-\[mypy]
-enable_error_code = ignore-without-code, truthy-bool
-
-\[mypy-tests.*]
-disable_error_code = ignore-without-code
-
-[case testInlineErrorCodesOverrideConfigSmall2]
-# flags: --config-file tmp/mypy.ini
-import tests.bar
-import tests.baz
-[file tests/__init__.py]
-[file tests/baz.py]
-42 + "no"  # type: ignore
-[file tests/bar.py]
-# mypy: enable-error-code="ignore-without-code"
-
-def foo() -> int: ...
-if foo: ...  # E: Function "foo" could always be true in boolean context
-42 + "no"  # type: ignore  # E: "type: ignore" comment without error code (consider "type: ignore[operator]" instead)
-
-[file mypy.ini]
-\[mypy]
-enable_error_code = ignore-without-code, truthy-bool
-
-\[mypy-tests.*]
-disable_error_code = ignore-without-code
-
-
-[case testInlineErrorCodesOverrideConfigSmallBackward]
-# flags: --config-file tmp/mypy.ini
-import tests.bar
-import tests.baz
-[file tests/__init__.py]
-[file tests/baz.py]
-42 + "no"  # type: ignore # E: "type: ignore" comment without error code (consider "type: ignore[operator]" instead)
-[file tests/bar.py]
-# mypy: disable-error-code="ignore-without-code"
-42 + "no"  # type: ignore 
-
-[file mypy.ini]
-\[mypy]
-enable_error_code = ignore-without-code, truthy-bool
-
-\[mypy-tests.*]
-enable_error_code = ignore-without-code
-
-[case testInlineOverrideConfig]
-# flags: --config-file tmp/mypy.ini
-import foo
-import tests.bar
-import tests.baz
-[file foo.py]
-# mypy: disable-error-code="truthy-bool"
-class Foo:
-    pass
-
-foo = Foo()
-if foo: ...
-42 # type: ignore  # E: Unused "type: ignore" comment
-
-[file tests/__init__.py]
-[file tests/bar.py]
-# mypy: warn_unused_ignores
-
-def foo() -> int: ...
-if foo: ...  # E: Function "foo" could always be true in boolean context
-42 # type: ignore  # E: Unused "type: ignore" comment
-
-[file tests/baz.py]
-# mypy: disable-error-code="truthy-bool"
-class Foo:
-    pass
-
-foo = Foo()
-if foo: ...
-42 # type: ignore
-
-[file mypy.ini]
-\[mypy]
-warn_unused_ignores = True
-
-\[mypy-tests.*]
-warn_unused_ignores = False
-
-
-[case testIgnoreErrorsSimple]
-# mypy: ignore-errors=True
-
-def f() -> None:
-    while 1():
-        pass
-
-[case testIgnoreErrorsInImportedModule]
-from m import C
-c = C()
-reveal_type(c.x)  # N: Revealed type is "builtins.int"
-
-[file m.py]
-# mypy: ignore-errors=True
-
-class C:
-    def f(self) -> None:
-        self.x = 1
-
-[case testIgnoreErrorsWithLambda]
-# mypy: ignore-errors=True
-
-def f(self, x=lambda: 1) -> None:
-    pass
-
-class C:
-    def f(self) -> None:
-        l = lambda: 1
-        self.x = 1
-
-[case testIgnoreErrorsWithUnsafeSuperCall_no_empty]
-
-from m import C
-
-class D(C):
-    def m(self) -> None:
-        super().m1()
-        super().m2() \
-            # E: Call to abstract method "m2" of "C" with trivial body via super() is unsafe
-        super().m3() \
-            # E: Call to abstract method "m3" of "C" with trivial body via super() is unsafe
-        super().m4() \
-            # E: Call to abstract method "m4" of "C" with trivial body via super() is unsafe
-        super().m5() \
-            # E: Call to abstract method "m5" of "C" with trivial body via super() is unsafe
-        super().m6() \
-            # E: Call to abstract method "m6" of "C" with trivial body via super() is unsafe
-        super().m7()
-
-    def m1(self) -> int:
-        return 0
-
-    def m2(self) -> int:
-        return 0
-
-    def m3(self) -> int:
-        return 0
-
-    def m4(self) -> int:
-        return 0
-
-    def m5(self) -> int:
-        return 0
-
-    def m6(self) -> int:
-        return 0
-
-[file m.py]
-# mypy: ignore-errors=True
-import abc
-
-class C:
-    @abc.abstractmethod
-    def m1(self) -> int:
-        """x"""
-        return 0
-
-    @abc.abstractmethod
-    def m2(self) -> int:
-        """doc"""
-
-    @abc.abstractmethod
-    def m3(self) -> int:
-        pass
-
-    @abc.abstractmethod
-    def m4(self) -> int: ...
-
-    @abc.abstractmethod
-    def m5(self) -> int:
-        """doc"""
-        ...
-
-    @abc.abstractmethod
-    def m6(self) -> int:
-        raise NotImplementedError()
-
-    @abc.abstractmethod
-    def m7(self) -> int:
-        raise NotImplementedError()
-        pass
-
-[builtins fixtures/exception.pyi]
-
-[case testInlineErrorCodesMultipleCodes]
-# mypy: disable-error-code="truthy-bool, ignore-without-code"
-class Foo:
-    pass
-
-foo = Foo()
-if foo: ...
-42 + "no"  # type: ignore
-
-[case testInlinePythonVersion]
-# mypy: python-version=3.10  # E: python_version not supported in inline configuration
-
-[case testInlineErrorCodesArentRuinedByOthersBaseCase]
-# mypy: disable-error-code=name-defined
-a
-
-[case testInlineErrorCodesArentRuinedByOthersInvalid]
-# mypy: disable-error-code=name-defined
-# mypy: AMONGUS
-a
-[out]
-main:2: error: Unrecognized option: amongus = True
-
-[case testInlineErrorCodesArentRuinedByOthersInvalidBefore]
-# mypy: AMONGUS
-# mypy: disable-error-code=name-defined
-a
-[out]
-main:1: error: Unrecognized option: amongus = True
-
-[case testInlineErrorCodesArentRuinedByOthersSe]
-# mypy: disable-error-code=name-defined
-# mypy: strict-equality
-def is_magic(x: bytes) -> bool:
-    y
-    return x == 'magic' # E: Unsupported left operand type for == ("bytes")
-
-[case testInlineConfigErrorCodesOffAndOn]
-# mypy: disable-error-code=name-defined
-# mypy: enable-error-code=name-defined
-a # E: Name "a" is not defined
-
-[case testInlineConfigErrorCodesOnAndOff]
-# mypy: enable-error-code=name-defined
-# mypy: disable-error-code=name-defined
-a # E: Name "a" is not defined
-
-[case testConfigFileErrorCodesOnAndOff]
-# flags: --config-file tmp/mypy.ini
-import foo
-[file foo.py]
-42 + "no"  # type: ignore  # E: "type: ignore" comment without error code (consider "type: ignore[operator]" instead)
-[file mypy.ini]
-\[mypy]
-enable_error_code = ignore-without-code
-disable_error_code = ignore-without-code
-
-[case testInlineConfigBaseCaseWui]
-# mypy: warn_unused_ignores
-x = 1 # type: ignore # E: Unused "type: ignore" comment
-
-[case testInlineConfigIsntRuinedByOthersInvalidWui]
-# mypy: warn_unused_ignores
-# mypy: AMONGUS
-x = 1 # type: ignore # E: Unused "type: ignore" comment
-[out]
-main:2: error: Unrecognized option: amongus = True
+-- Checks for 'mypy: option' directives inside files
+
+[case testInlineSimple1]
+
+# mypy: disallow-any-generics, no-warn-no-return
+
+from typing import List, Optional
+def foo() -> Optional[List]:  # E: Missing type parameters for generic type "List"
+    20
+
+[builtins fixtures/list.pyi]
+
+[case testInlineSimple2]
+
+# mypy: disallow-any-generics
+# mypy: no-warn-no-return
+
+from typing import List, Optional
+def foo() -> Optional[List]:  # E: Missing type parameters for generic type "List"
+    20
+
+[builtins fixtures/list.pyi]
+
+[case testInlineSimple3]
+
+# mypy: disallow-any-generics=true, warn-no-return=0
+
+from typing import List, Optional
+def foo() -> Optional[List]:  # E: Missing type parameters for generic type "List"
+    20
+
+[builtins fixtures/list.pyi]
+
+
+[case testInlineSimple4]
+
+# mypy: disallow-any-generics = true, warn-no-return = 0
+
+from typing import List, Optional
+def foo() -> Optional[List]:  # E: Missing type parameters for generic type "List"
+    20
+
+[builtins fixtures/list.pyi]
+
+[case testInlineList]
+
+# mypy: disallow-any-generics,always-false="FOO,BAR"
+
+from typing import List
+
+def foo(FOO: bool, BAR: bool) -> List:  # E: Missing type parameters for generic type "List"
+    if FOO or BAR:
+        1+'lol'
+    return []
+
+[builtins fixtures/list.pyi]
+
+[case testInlineInvert1]
+# flags: --disallow-any-generics --allow-untyped-globals
+import a
+[file a.py]
+# mypy: allow-any-generics, disallow-untyped-globals
+
+x = []  # E: Need type annotation for "x" (hint: "x: List[<type>] = ...")
+
+from typing import List
+def foo() -> List:
+    ...
+
+[builtins fixtures/list.pyi]
+
+[case testInlineInvert2]
+
+import a
+[file a.py]
+# mypy: no-always-true
+
+[out]
+tmp/a.py:1: error: Can not invert non-boolean key always_true
+
+[case testInlineIncremental1]
+
+import a
+[file a.py]
+# mypy: disallow-any-generics, no-warn-no-return
+
+from typing import List, Optional
+def foo() -> Optional[List]:
+    20
+
+[file a.py.2]
+# mypy: no-warn-no-return
+
+from typing import List, Optional
+def foo() -> Optional[List]:
+    20
+
+[file a.py.3]
+from typing import List, Optional
+def foo() -> Optional[List]:
+    20
+[out]
+tmp/a.py:4: error: Missing type parameters for generic type "List"
+[out2]
+[out3]
+tmp/a.py:2: error: Missing return statement
+
+[builtins fixtures/list.pyi]
+
+[case testInlineIncremental2]
+
+# flags2: --disallow-any-generics
+import a
+[file a.py]
+# mypy: no-warn-no-return
+
+from typing import Optional, List
+def foo() -> Optional[List]:
+    20
+
+[file b.py.2]
+# no changes to a.py, but flag change should cause recheck
+
+[out]
+[out2]
+tmp/a.py:4: error: Missing type parameters for generic type "List"
+
+[builtins fixtures/list.pyi]
+
+[case testInlineIncremental3]
+import a, b
+[file a.py]
+# mypy: no-warn-no-return
+from typing import Optional
+
+def foo() -> Optional[int]:
+    20
+
+[file b.py]
+[file b.py.2]
+# no changes to a.py and we want to make sure it isn't rechecked
+[out]
+[out2]
+[rechecked b]
+
+[case testInlineError1]
+# mypy: invalid-whatever
+# mypy: no-warn-no-return; no-strict-optional
+# mypy: always-true=FOO,BAR
+# mypy: always-true="FOO,BAR
+[out]
+main:1: error: Unrecognized option: invalid_whatever = True
+main:2: error: Unrecognized option: no_warn_no_return; no_strict_optional = True
+main:3: error: Unrecognized option: bar = True
+main:4: error: Unterminated quote in configuration comment
+
+[case testInlineError2]
+# mypy: skip-file
+[out]
+main:1: error: Unrecognized option: skip_file = True
+
+[case testInlineStrict]
+# mypy: strict
+[out]
+main:1: error: Setting "strict" not supported in inline configuration: specify it in a configuration file instead, or set individual inline flags (see "mypy -h" for the list of flags enabled in strict mode)
+
+[case testInlineErrorCodes]
+# mypy: enable-error-code="ignore-without-code,truthy-bool"
+class Foo:
+    pass
+
+foo = Foo()
+if foo: ...  # E: "__main__.foo" has type "Foo" which does not implement __bool__ or __len__ so it could always be true in boolean context
+42 + "no"  # type: ignore  # E: "type: ignore" comment without error code (consider "type: ignore[operator]" instead)
+
+[case testInlineErrorCodesOverrideConfig]
+# flags: --config-file tmp/mypy.ini
+import foo
+import tests.bar
+import tests.baz
+[file foo.py]
+# mypy: disable-error-code="truthy-bool"
+class Foo:
+    pass
+
+foo = Foo()
+if foo: ...
+42 + "no"  # type: ignore  # E: "type: ignore" comment without error code (consider "type: ignore[operator]" instead)
+
+[file tests/__init__.py]
+[file tests/bar.py]
+# mypy: enable-error-code="ignore-without-code"
+
+def foo() -> int: ...
+if foo: ...  # E: Function "foo" could always be true in boolean context
+42 + "no"  # type: ignore  # E: "type: ignore" comment without error code (consider "type: ignore[operator]" instead)
+
+[file tests/baz.py]
+# mypy: disable-error-code="truthy-bool"
+class Foo:
+    pass
+
+foo = Foo()
+if foo: ...
+42 + "no"  # type: ignore
+
+[file mypy.ini]
+\[mypy]
+enable_error_code = ignore-without-code, truthy-bool
+
+\[mypy-tests.*]
+disable_error_code = ignore-without-code
+
+[case testInlineErrorCodesOverrideConfigSmall]
+# flags: --config-file tmp/mypy.ini
+import tests.baz
+[file tests/__init__.py]
+[file tests/baz.py]
+42 + "no"  # type: ignore
+
+[file mypy.ini]
+\[mypy]
+enable_error_code = ignore-without-code, truthy-bool
+
+\[mypy-tests.*]
+disable_error_code = ignore-without-code
+
+[case testInlineErrorCodesOverrideConfigSmall2]
+# flags: --config-file tmp/mypy.ini
+import tests.bar
+import tests.baz
+[file tests/__init__.py]
+[file tests/baz.py]
+42 + "no"  # type: ignore
+[file tests/bar.py]
+# mypy: enable-error-code="ignore-without-code"
+
+def foo() -> int: ...
+if foo: ...  # E: Function "foo" could always be true in boolean context
+42 + "no"  # type: ignore  # E: "type: ignore" comment without error code (consider "type: ignore[operator]" instead)
+
+[file mypy.ini]
+\[mypy]
+enable_error_code = ignore-without-code, truthy-bool
+
+\[mypy-tests.*]
+disable_error_code = ignore-without-code
+
+
+[case testInlineErrorCodesOverrideConfigSmallBackward]
+# flags: --config-file tmp/mypy.ini
+import tests.bar
+import tests.baz
+[file tests/__init__.py]
+[file tests/baz.py]
+42 + "no"  # type: ignore # E: "type: ignore" comment without error code (consider "type: ignore[operator]" instead)
+[file tests/bar.py]
+# mypy: disable-error-code="ignore-without-code"
+42 + "no"  # type: ignore 
+
+[file mypy.ini]
+\[mypy]
+enable_error_code = ignore-without-code, truthy-bool
+
+\[mypy-tests.*]
+enable_error_code = ignore-without-code
+
+[case testInlineOverrideConfig]
+# flags: --config-file tmp/mypy.ini
+import foo
+import tests.bar
+import tests.baz
+[file foo.py]
+# mypy: disable-error-code="truthy-bool"
+class Foo:
+    pass
+
+foo = Foo()
+if foo: ...
+42 # type: ignore  # E: Unused "type: ignore" comment
+
+[file tests/__init__.py]
+[file tests/bar.py]
+# mypy: warn_unused_ignores
+
+def foo() -> int: ...
+if foo: ...  # E: Function "foo" could always be true in boolean context
+42 # type: ignore  # E: Unused "type: ignore" comment
+
+[file tests/baz.py]
+# mypy: disable-error-code="truthy-bool"
+class Foo:
+    pass
+
+foo = Foo()
+if foo: ...
+42 # type: ignore
+
+[file mypy.ini]
+\[mypy]
+warn_unused_ignores = True
+
+\[mypy-tests.*]
+warn_unused_ignores = False
+
+
+[case testIgnoreErrorsSimple]
+# mypy: ignore-errors=True
+
+def f() -> None:
+    while 1():
+        pass
+
+[case testIgnoreErrorsInImportedModule]
+from m import C
+c = C()
+reveal_type(c.x)  # N: Revealed type is "builtins.int"
+
+[file m.py]
+# mypy: ignore-errors=True
+
+class C:
+    def f(self) -> None:
+        self.x = 1
+
+[case testIgnoreErrorsWithLambda]
+# mypy: ignore-errors=True
+
+def f(self, x=lambda: 1) -> None:
+    pass
+
+class C:
+    def f(self) -> None:
+        l = lambda: 1
+        self.x = 1
+
+[case testIgnoreErrorsWithUnsafeSuperCall_no_empty]
+
+from m import C
+
+class D(C):
+    def m(self) -> None:
+        super().m1()
+        super().m2() \
+            # E: Call to abstract method "m2" of "C" with trivial body via super() is unsafe
+        super().m3() \
+            # E: Call to abstract method "m3" of "C" with trivial body via super() is unsafe
+        super().m4() \
+            # E: Call to abstract method "m4" of "C" with trivial body via super() is unsafe
+        super().m5() \
+            # E: Call to abstract method "m5" of "C" with trivial body via super() is unsafe
+        super().m6() \
+            # E: Call to abstract method "m6" of "C" with trivial body via super() is unsafe
+        super().m7()
+
+    def m1(self) -> int:
+        return 0
+
+    def m2(self) -> int:
+        return 0
+
+    def m3(self) -> int:
+        return 0
+
+    def m4(self) -> int:
+        return 0
+
+    def m5(self) -> int:
+        return 0
+
+    def m6(self) -> int:
+        return 0
+
+[file m.py]
+# mypy: ignore-errors=True
+import abc
+
+class C:
+    @abc.abstractmethod
+    def m1(self) -> int:
+        """x"""
+        return 0
+
+    @abc.abstractmethod
+    def m2(self) -> int:
+        """doc"""
+
+    @abc.abstractmethod
+    def m3(self) -> int:
+        pass
+
+    @abc.abstractmethod
+    def m4(self) -> int: ...
+
+    @abc.abstractmethod
+    def m5(self) -> int:
+        """doc"""
+        ...
+
+    @abc.abstractmethod
+    def m6(self) -> int:
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def m7(self) -> int:
+        raise NotImplementedError()
+        pass
+
+[builtins fixtures/exception.pyi]
+
+[case testInlineErrorCodesMultipleCodes]
+# mypy: disable-error-code="truthy-bool, ignore-without-code"
+class Foo:
+    pass
+
+foo = Foo()
+if foo: ...
+42 + "no"  # type: ignore
+
+[case testInlinePythonVersion]
+# mypy: python-version=3.10  # E: python_version not supported in inline configuration
+
+[case testInlineErrorCodesArentRuinedByOthersBaseCase]
+# mypy: disable-error-code=name-defined
+a
+
+[case testInlineErrorCodesArentRuinedByOthersInvalid]
+# mypy: disable-error-code=name-defined
+# mypy: AMONGUS
+a
+[out]
+main:2: error: Unrecognized option: amongus = True
+
+[case testInlineErrorCodesArentRuinedByOthersInvalidBefore]
+# mypy: AMONGUS
+# mypy: disable-error-code=name-defined
+a
+[out]
+main:1: error: Unrecognized option: amongus = True
+
+[case testInlineErrorCodesArentRuinedByOthersSe]
+# mypy: disable-error-code=name-defined
+# mypy: strict-equality
+def is_magic(x: bytes) -> bool:
+    y
+    return x == 'magic' # E: Unsupported left operand type for == ("bytes")
+
+[case testInlineConfigErrorCodesOffAndOn]
+# mypy: disable-error-code=name-defined
+# mypy: enable-error-code=name-defined
+a # E: Name "a" is not defined
+
+[case testInlineConfigErrorCodesOnAndOff]
+# mypy: enable-error-code=name-defined
+# mypy: disable-error-code=name-defined
+a # E: Name "a" is not defined
+
+[case testConfigFileErrorCodesOnAndOff]
+# flags: --config-file tmp/mypy.ini
+import foo
+[file foo.py]
+42 + "no"  # type: ignore  # E: "type: ignore" comment without error code (consider "type: ignore[operator]" instead)
+[file mypy.ini]
+\[mypy]
+enable_error_code = ignore-without-code
+disable_error_code = ignore-without-code
+
+[case testInlineConfigBaseCaseWui]
+# mypy: warn_unused_ignores
+x = 1 # type: ignore # E: Unused "type: ignore" comment
+
+[case testInlineConfigIsntRuinedByOthersInvalidWui]
+# mypy: warn_unused_ignores
+# mypy: AMONGUS
+x = 1 # type: ignore # E: Unused "type: ignore" comment
+[out]
+main:2: error: Unrecognized option: amongus = True

From b737e434ee0f64738847c5a0b5472d73303e825e Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Mon, 12 May 2025 17:26:44 +0000
Subject: [PATCH 17/19] [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci
---
 mypy/errorcodes.py                      | 1 +
 test-data/unit/check-inline-config.test | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/mypy/errorcodes.py b/mypy/errorcodes.py
index 485251408496d..b02663904a33c 100644
--- a/mypy/errorcodes.py
+++ b/mypy/errorcodes.py
@@ -40,6 +40,7 @@ def __str__(self) -> str:
     def __repr__(self) -> str:
         """This doesn't fulfill the goals of repr but it's better than the default view."""
         return self.code
+
     def __eq__(self, other: object) -> bool:
         if not isinstance(other, ErrorCode):
             return False
diff --git a/test-data/unit/check-inline-config.test b/test-data/unit/check-inline-config.test
index 048dd8522847b..0dbee3a70e6cd 100644
--- a/test-data/unit/check-inline-config.test
+++ b/test-data/unit/check-inline-config.test
@@ -256,7 +256,7 @@ import tests.baz
 42 + "no"  # type: ignore # E: "type: ignore" comment without error code (consider "type: ignore[operator]" instead)
 [file tests/bar.py]
 # mypy: disable-error-code="ignore-without-code"
-42 + "no"  # type: ignore 
+42 + "no"  # type: ignore
 
 [file mypy.ini]
 \[mypy]

From 2bf9c7b8bb64200ba0f310253af2d3408b008750 Mon Sep 17 00:00:00 2001
From: wyattscarpenter <wyattscarpenter@gmail.com>
Date: Thu, 3 Jul 2025 21:25:18 -0700
Subject: [PATCH 18/19] Update mypy/errorcodes.py as suggested

Co-authored-by: Stanislav Terliakov <50529348+sterliakov@users.noreply.github.com>
---
 mypy/errorcodes.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mypy/errorcodes.py b/mypy/errorcodes.py
index b02663904a33c..0527af772c289 100644
--- a/mypy/errorcodes.py
+++ b/mypy/errorcodes.py
@@ -39,7 +39,7 @@ def __str__(self) -> str:
 
     def __repr__(self) -> str:
         """This doesn't fulfill the goals of repr but it's better than the default view."""
-        return self.code
+        return f"<ErrorCode {self.code}>"
 
     def __eq__(self, other: object) -> bool:
         if not isinstance(other, ErrorCode):

From a279c46dd69fff9fe45af60a871aadf12ee7cd14 Mon Sep 17 00:00:00 2001
From: wyattscarpenter <wyattscarpenter@gmail.com>
Date: Fri, 4 Jul 2025 01:39:16 -0400
Subject: [PATCH 19/19] Update mypy/errorcodes.py: add category there

---
 mypy/errorcodes.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mypy/errorcodes.py b/mypy/errorcodes.py
index 0527af772c289..9581ce64c89be 100644
--- a/mypy/errorcodes.py
+++ b/mypy/errorcodes.py
@@ -39,7 +39,7 @@ def __str__(self) -> str:
 
     def __repr__(self) -> str:
         """This doesn't fulfill the goals of repr but it's better than the default view."""
-        return f"<ErrorCode {self.code}>"
+        return f"<ErrorCode {self.category}: {self.code}>"
 
     def __eq__(self, other: object) -> bool:
         if not isinstance(other, ErrorCode):