codespell fixes and adding .codespell-ignorelines

.codespell-ignorelines

@@ -0,0 +1,13 @@
+    assert m.atyp_valu().get_mtxt() == "Valu"
+atyp_valu        rtrn_valu() { atyp_valu obj{"Valu"}; return obj; }
+    indestructible_int(int v) : valu{v} {}
+    int valu;
+    movable_int(int v) : valu{v} {}
+        (m.pass_valu, "Valu", "pass_valu:Valu(_MvCtor)*_CpCtor"),
+        other.valu = 91;
+    REQUIRE(hld.as_raw_ptr_unowned<zombie>()->valu == 19);
+        REQUIRE(orig.valu == 91);
+        REQUIRE(othr.valu == 19);
+        valu = other.valu;
+        with pytest.raises(ValueError) as excinfo:
+    with pytest.raises(ValueError) as exc_info:

.pre-commit-config.yaml

@@ -92,7 +92,8 @@ repos:
     entry: codespell
     language: python
     types: [text]
-    args: ["-q", "3", "--skip", "*.supp", "-L", "nd,ot,thist,readded"]
+    args: ["-q", "3", "--skip", "*.supp", "-L", "nd,ot,thist,readded",
+           "--exclude-file", ".codespell-ignorelines"]
 
 # The original pybind11 checks for a few C++ style items
 - repo: local

include/pybind11/detail/smart_holder_poc.h

@@ -32,7 +32,7 @@ Details:
 
 * If created from a raw pointer, or a `unique_ptr` without a custom deleter,
   `vptr` always uses a custom deleter, to support `unique_ptr`-like disowning.
-  The custom deleters could be extended to included life-time managment for
+  The custom deleters could be extended to included life-time management for
   external objects (e.g. `PyObject`).
 
 * If created from an external `shared_ptr`, or a `unique_ptr` with a custom

include/pybind11/detail/smart_holder_type_casters.h

@@ -278,7 +278,7 @@ struct smart_holder_type_caster_class_hooks : smart_holder_type_caster_base_tag
     }
 
     // Adopting existing approach used by type_caster_base, although it leads to somewhat fuzzy
-    // ownership semantics: if we deteced via shared_from_this that a shared_ptr exists already, it
+    // ownership semantics: if we detected via shared_from_this that a shared_ptr exists already, it
     // is reused, irrespective of the return_value_policy in effect.
     // "SomeBaseOfWrappedType" is needed because std::enable_shared_from_this is not necessarily a
     // direct base of WrappedType.

tests/test_class_sh_trampoline_shared_from_this.py

@@ -95,7 +95,7 @@ def test_release_and_stash_leak():
 
 
 def test_release_and_stash_via_shared_from_this():
-    # Exercises that the smart_holder vptr is invisible to the shared_from_this mechnism.
+    # Exercises that the smart_holder vptr is invisible to the shared_from_this mechanism.
     obj = PySft("PySft")
     stash1 = m.SftSharedPtrStash(1)
     with pytest.raises(RuntimeError) as exc_info: