Cleanup: comments (long lines) in python

23 files changed, 182 insertions, 90 deletions

diff --git a/source/blender/python/bmesh/bmesh_py_types.c b/source/blender/python/bmesh/bmesh_py_types.c
index f540b2e102c..eb611e6566a 100644
--- a/source/blender/python/bmesh/bmesh_py_types.c
+++ b/source/blender/python/bmesh/bmesh_py_types.c
@@ -875,10 +875,20 @@ static PyGetSetDef bpy_bmface_getseters[] = {
 };
 
 static PyGetSetDef bpy_bmloop_getseters[] = {
-    /* generic */
-    /* flags are available but not used for loops. */
-    // {(char *)"select", (getter)bpy_bm_elem_hflag_get, (setter)bpy_bm_elem_hflag_set, (char *)bpy_bm_elem_select_doc, (void *)BM_ELEM_SELECT},
-    // {(char *)"hide",   (getter)bpy_bm_elem_hflag_get, (setter)bpy_bm_elem_hflag_set, (char *)bpy_bm_elem_hide_doc,   (void *)BM_ELEM_HIDDEN},
+/* generic */
+/* flags are available but not used for loops. */
+#if 0
+    {(char *)"select",
+     (getter)bpy_bm_elem_hflag_get,
+     (setter)bpy_bm_elem_hflag_set,
+     (char *)bpy_bm_elem_select_doc,
+     (void *)BM_ELEM_SELECT},
+    {(char *)"hide",
+     (getter)bpy_bm_elem_hflag_get,
+     (setter)bpy_bm_elem_hflag_set,
+     (char *)bpy_bm_elem_hide_doc,
+     (void *)BM_ELEM_HIDDEN},
+#endif
     {(char *)"tag",
      (getter)bpy_bm_elem_hflag_get,
      (setter)bpy_bm_elem_hflag_set,
diff --git a/source/blender/python/generic/idprop_py_api.c b/source/blender/python/generic/idprop_py_api.c
index 056e3a33b6e..dd5baaa661c 100644
--- a/source/blender/python/generic/idprop_py_api.c
+++ b/source/blender/python/generic/idprop_py_api.c
@@ -164,7 +164,8 @@ PyObject *BPy_IDGroup_WrapData(ID *id, IDProperty *prop, IDProperty *parent)
   }
 }
 
-#if 0 /* UNUSED, currently assignment overwrites into new properties, rather than setting in-place */
+/* UNUSED, currently assignment overwrites into new properties, rather than setting in-place. */
+#if 0
 static int BPy_IDGroup_SetData(BPy_IDProperty *self, IDProperty *prop, PyObject *value)
 {
   switch (prop->type) {
diff --git a/source/blender/python/generic/py_capi_utils.c b/source/blender/python/generic/py_capi_utils.c
index 191863a862d..25549c95896 100644
--- a/source/blender/python/generic/py_capi_utils.c
+++ b/source/blender/python/generic/py_capi_utils.c
@@ -37,7 +37,8 @@
 #include "BLI_string.h"
 
 #ifndef MATH_STANDALONE
-/* only for BLI_strncpy_wchar_from_utf8, should replace with py funcs but too late in release now */
+/* Only for BLI_strncpy_wchar_from_utf8,
+ * should replace with py funcs but too late in release now. */
 #  include "BLI_string_utf8.h"
 #endif
 
@@ -273,7 +274,8 @@ void PyC_ObSpitStr(char *result, size_t result_len, PyObject *var)
     const PyTypeObject *type = Py_TYPE(var);
     PyObject *var_str = PyObject_Repr(var);
     if (var_str == NULL) {
-      /* We could print error here, but this may be used for generating errors - so don't for now. */
+      /* We could print error here,
+       * but this may be used for generating errors - so don't for now. */
       PyErr_Clear();
     }
     BLI_snprintf(result,
@@ -765,7 +767,8 @@ void PyC_MainModule_Restore(PyObject *main_mod)
   Py_XDECREF(main_mod);
 }
 
-/* must be called before Py_Initialize, expects output of BKE_appdir_folder_id(BLENDER_PYTHON, NULL) */
+/* Must be called before Py_Initialize,
+ * expects output of BKE_appdir_folder_id(BLENDER_PYTHON, NULL). */
 void PyC_SetHomePath(const char *py_path_bundle)
 {
   if (py_path_bundle == NULL) {
@@ -803,7 +806,8 @@ void PyC_SetHomePath(const char *py_path_bundle)
   {
     static wchar_t py_path_bundle_wchar[1024];
 
-    /* cant use this, on linux gives bug: #23018, TODO: try LANG="en_US.UTF-8" /usr/bin/blender, suggested 22008 */
+    /* Can't use this, on linux gives bug: #23018,
+     * TODO: try LANG="en_US.UTF-8" /usr/bin/blender, suggested 2008 */
     /* mbstowcs(py_path_bundle_wchar, py_path_bundle, FILE_MAXDIR); */
 
     BLI_strncpy_wchar_from_utf8(
diff --git a/source/blender/python/generic/python_utildefines.h b/source/blender/python/generic/python_utildefines.h
index 40cec436dea..653122c9c33 100644
--- a/source/blender/python/generic/python_utildefines.h
+++ b/source/blender/python/generic/python_utildefines.h
@@ -45,7 +45,8 @@ Py_LOCAL_INLINE(PyObject *) Py_INCREF_RET(PyObject *op)
   return op;
 }
 
-/* append & transfer ownership to the list, avoids inline Py_DECREF all over (which is quite a large macro) */
+/* Append & transfer ownership to the list,
+ * avoids inline Py_DECREF all over (which is quite a large macro). */
 Py_LOCAL_INLINE(int) PyList_APPEND(PyObject *op, PyObject *v)
 {
   int ret = PyList_Append(op, v);
diff --git a/source/blender/python/gpu/gpu_py_batch.c b/source/blender/python/gpu/gpu_py_batch.c
index 094052b724f..a9e65413767 100644
--- a/source/blender/python/gpu/gpu_py_batch.c
+++ b/source/blender/python/gpu/gpu_py_batch.c
@@ -127,7 +127,8 @@ PyDoc_STRVAR(bpygpu_Batch_vertbuf_add_doc,
 "   Add another vertex buffer to the Batch.\n"
 "   It is not possible to add more vertices to the batch using this method.\n"
 "   Instead it can be used to add more attributes to the existing vertices.\n"
-"   A good use case would be when you have a separate vertex buffer for vertex positions and vertex normals.\n"
+"   A good use case would be when you have a separate\n"
+"   vertex buffer for vertex positions and vertex normals.\n"
 "   Current a batch can have at most " STRINGIFY(GPU_BATCH_VBO_MAX_LEN) " vertex buffers.\n"
 "\n"
 "   :param buf: The vertex buffer that will be added to the batch.\n"
diff --git a/source/blender/python/intern/bpy.c b/source/blender/python/intern/bpy.c
index 08f4df543a8..92ba7704b19 100644
--- a/source/blender/python/intern/bpy.c
+++ b/source/blender/python/intern/bpy.c
@@ -177,7 +177,8 @@ static PyObject *bpy_user_resource(PyObject *UNUSED(self), PyObject *args, PyObj
     return NULL;
   }
 
-  /* same logic as BKE_appdir_folder_id_create(), but best leave it up to the script author to create */
+  /* same logic as BKE_appdir_folder_id_create(),
+   * but best leave it up to the script author to create */
   path = BKE_appdir_folder_id_user_notest(folder_id, subdir);
 
   return PyC_UnicodeFromByte(path ? path : "");
diff --git a/source/blender/python/intern/bpy_app_ocio.c b/source/blender/python/intern/bpy_app_ocio.c
index 2a56075e00e..9dcadbac2af 100644
--- a/source/blender/python/intern/bpy_app_ocio.c
+++ b/source/blender/python/intern/bpy_app_ocio.c
@@ -40,10 +40,12 @@ static PyStructSequence_Field app_ocio_info_fields[] = {
 };
 
 static PyStructSequence_Desc app_ocio_info_desc = {
-    (char *)"bpy.app.ocio", /* name */
-    (char
-         *)"This module contains information about OpenColorIO blender is linked against", /* doc */
-    app_ocio_info_fields, /* fields */
+    /* name */
+    (char *)"bpy.app.ocio",
+    /* doc */
+    (char *)"This module contains information about OpenColorIO blender is linked against",
+    /* fields */
+    app_ocio_info_fields,
     ARRAY_SIZE(app_ocio_info_fields) - 1,
 };
 
diff --git a/source/blender/python/intern/bpy_app_translations.c b/source/blender/python/intern/bpy_app_translations.c
index 56de6dd1405..a48cd742448 100644
--- a/source/blender/python/intern/bpy_app_translations.c
+++ b/source/blender/python/intern/bpy_app_translations.c
@@ -47,13 +47,16 @@
 
 typedef struct {
   PyObject_HEAD
-      /* The string used to separate context from actual message in PY_TRANSLATE RNA props. */
+      /** The string used to separate context from actual message in PY_TRANSLATE RNA props. */
       const char *context_separator;
-  /* A "named tuple" (StructSequence actually...) containing all C-defined contexts. */
+  /** A "named tuple" (StructSequence actually...) containing all C-defined contexts. */
   PyObject *contexts;
-  /* A readonly mapping {C context id: python id}  (actually, a MappingProxy). */
+  /** A readonly mapping {C context id: python id}  (actually, a MappingProxy). */
   PyObject *contexts_C_to_py;
-  /* A py dict containing all registered py dicts (order is more or less random, first match wins!). */
+  /**
+   * A py dict containing all registered py dicts
+   * (order is more or less random, first match wins!).
+   */
   PyObject *py_messages;
 } BlenderAppTranslations;
 
@@ -111,8 +114,8 @@ static void _ghashutil_keyfree(void *ptr)
 /***** Python's messages cache *****/
 
 /* We cache all messages available for a given locale from all py dicts into a single ghash.
- * Changing of locale is not so common, while looking for a message translation is, so let's try to optimize
- * the later as much as we can!
+ * Changing of locale is not so common, while looking for a message translation is,
+ * so let's try to optimize the later as much as we can!
  * Note changing of locale, as well as (un)registering a message dict, invalidate that cache.
  */
 static GHash *_translations_cache = NULL;
@@ -148,7 +151,8 @@ static void _build_translations_cache(PyObject *py_messages, const char *locale)
     printf("\n");
 #  endif
 
-    /* Try to get first complete locale, then language+country, then language+variant, then only language */
+    /* Try to get first complete locale, then language+country,
+     * then language+variant, then only language. */
     lang_dict = PyDict_GetItemString(uuid_dict, locale);
     if (!lang_dict && language_country) {
       lang_dict = PyDict_GetItemString(uuid_dict, language_country);
@@ -393,8 +397,8 @@ static PyTypeObject BlenderAppTranslationsContextsType;
 static BLT_i18n_contexts_descriptor _contexts[] = BLT_I18NCONTEXTS_DESC;
 
 /* These fields are just empty placeholders, actual values get set in app_translations_struct().
- * This allows us to avoid many handwriting, and above all, to keep all context definition stuff in BLT_translation.h!
- */
+ * This allows us to avoid many handwriting, and above all,
+ * to keep all context definition stuff in BLT_translation.h! */
 static PyStructSequence_Field app_translations_contexts_fields[ARRAY_SIZE(_contexts)] = {{NULL}};
 
 static PyStructSequence_Desc app_translations_contexts_desc = {
diff --git a/source/blender/python/intern/bpy_driver.c b/source/blender/python/intern/bpy_driver.c
index 3457e614708..726599ff06e 100644
--- a/source/blender/python/intern/bpy_driver.c
+++ b/source/blender/python/intern/bpy_driver.c
@@ -54,7 +54,10 @@ extern void BPY_update_rna_module(void);
 #  include <opcode.h>
 #endif
 
-/* for pydrivers (drivers using one-line Python expressions to express relationships between targets) */
+/**
+ * For PyDrivers
+ * (drivers using one-line Python expressions to express relationships between targets).
+ */
 PyObject *bpy_pydriver_Dict = NULL;
 
 #ifdef USE_BYTECODE_WHITELIST
@@ -399,8 +402,10 @@ float BPY_driver_exec(struct PathResolvedRNA *anim_rna,
 {
   PyObject *driver_vars = NULL;
   PyObject *retval = NULL;
-  PyObject *
-      expr_vars; /* speed up by pre-hashing string & avoids re-converting unicode strings for every execution */
+
+  /* Speed up by pre-hashing string & avoids re-converting unicode strings for every execution. */
+  PyObject *expr_vars;
+
   PyObject *expr_code;
   PyGILState_STATE gilstate;
   bool use_gil;
@@ -475,8 +480,9 @@ float BPY_driver_exec(struct PathResolvedRNA *anim_rna,
     PyTuple_SET_ITEM(((PyObject *)driver_orig->expr_comp), 0, expr_code);
 
     driver_orig->flag &= ~DRIVER_FLAG_RECOMPILE;
-    driver_orig->flag |=
-        DRIVER_FLAG_RENAMEVAR; /* maybe this can be removed but for now best keep until were sure */
+
+    /* Maybe this can be removed but for now best keep until were sure. */
+    driver_orig->flag |= DRIVER_FLAG_RENAMEVAR;
 #ifdef USE_BYTECODE_WHITELIST
     is_recompile = true;
 #endif
diff --git a/source/blender/python/intern/bpy_gizmo_wrap.c b/source/blender/python/intern/bpy_gizmo_wrap.c
index 41ff630753f..c66cad5f4a3 100644
--- a/source/blender/python/intern/bpy_gizmo_wrap.c
+++ b/source/blender/python/intern/bpy_gizmo_wrap.c
@@ -116,8 +116,9 @@ static void gizmo_properties_init(wmGizmoType *gzt)
 
   /* Extract target property definitions from 'bl_target_properties' */
   {
-    /* picky developers will notice that 'bl_targets' won't work with inheritance
-     * get direct from the dict to avoid raising a load of attribute errors (yes this isnt ideal) - campbell */
+    /* Picky developers will notice that 'bl_targets' won't work with inheritance
+     * get direct from the dict to avoid raising a load of attribute errors
+     * (yes this isnt ideal) - campbell. */
     PyObject *py_class_dict = py_class->tp_dict;
     PyObject *bl_target_properties = PyDict_GetItem(py_class_dict,
                                                     bpy_intern_str_bl_target_properties);
diff --git a/source/blender/python/intern/bpy_interface.c b/source/blender/python/intern/bpy_interface.c
index 90dfdcd33b7..ebcb4085597 100644
--- a/source/blender/python/intern/bpy_interface.c
+++ b/source/blender/python/intern/bpy_interface.c
@@ -80,7 +80,8 @@ CLG_LOGREF_DECLARE_GLOBAL(BPY_LOG_RNA, "bpy.rna");
 
 /* for internal use, when starting and ending python scripts */
 
-/* in case a python script triggers another python call, stop bpy_context_clear from invalidating */
+/* In case a python script triggers another python call,
+ * stop bpy_context_clear from invalidating. */
 static int py_call_level = 0;
 
 // #define TIME_PY_RUN // simple python tests. prints on exit.
diff --git a/source/blender/python/intern/bpy_operator.c b/source/blender/python/intern/bpy_operator.c
index 0f66a9cbeb9..aef4ab6667a 100644
--- a/source/blender/python/intern/bpy_operator.c
+++ b/source/blender/python/intern/bpy_operator.c
@@ -314,8 +314,9 @@ static PyObject *pyop_call(PyObject *UNUSED(self), PyObject *args)
     return NULL;
   }
 
-  /* when calling  bpy.ops.wm.read_factory_settings() bpy.data's main pointer is freed by clear_globals(),
-   * further access will crash blender. setting context is not needed in this case, only calling because this
+  /* When calling  bpy.ops.wm.read_factory_settings() bpy.data's main pointer
+   * is freed by clear_globals(), further access will crash blender.
+   * Setting context is not needed in this case, only calling because this
    * function corrects bpy.data (internal Main pointer) */
   BPY_modules_update(C);
 
diff --git a/source/blender/python/intern/bpy_operator_wrap.c b/source/blender/python/intern/bpy_operator_wrap.c
index 976ed4611b0..8f2f08c7c37 100644
--- a/source/blender/python/intern/bpy_operator_wrap.c
+++ b/source/blender/python/intern/bpy_operator_wrap.c
@@ -45,7 +45,8 @@ static void operator_properties_init(wmOperatorType *ot)
   /* Only call this so pyrna_deferred_register_class gives a useful error
    * WM_operatortype_append_ptr will call RNA_def_struct_identifier later.
    *
-   * Note the 'no_struct_map' function is used since the actual struct name is already used by the operator.
+   * Note the 'no_struct_map' function is used since the actual struct name
+   * is already used by the operator.
    */
   RNA_def_struct_identifier_no_struct_map(ot->srna, ot->idname);
 
@@ -56,8 +57,9 @@ static void operator_properties_init(wmOperatorType *ot)
 
   /* set the default property: ot->prop */
   {
-    /* picky developers will notice that 'bl_property' won't work with inheritance
-     * get direct from the dict to avoid raising a load of attribute errors (yes this isnt ideal) - campbell */
+    /* Picky developers will notice that 'bl_property' won't work with inheritance
+     * get direct from the dict to avoid raising a load of attribute errors (yes this isnt ideal)
+     * - campbell. */
     PyObject *py_class_dict = py_class->tp_dict;
     PyObject *bl_property = PyDict_GetItem(py_class_dict, bpy_intern_str_bl_property);
     const char *prop_id;
diff --git a/source/blender/python/intern/bpy_props.c b/source/blender/python/intern/bpy_props.c
index a0a6c73fe1f..074d72f094f 100644
--- a/source/blender/python/intern/bpy_props.c
+++ b/source/blender/python/intern/bpy_props.c
@@ -2277,7 +2277,10 @@ static PyObject *BPy_BoolVectorProperty(PyObject *self, PyObject *args, PyObject
       return NULL;
     }
 
-    // prop = RNA_def_boolean_array(srna, id, size, pydef ? def:NULL, name ? name : id, description);
+#if 0
+    prop = RNA_def_boolean_array(
+        srna, id, size, pydef ? def : NULL, name ? name : id, description);
+#endif
     prop = RNA_def_property(srna, id, PROP_BOOLEAN, subtype);
     RNA_def_property_array(prop, size);
     if (pydef) {
diff --git a/source/blender/python/intern/bpy_rna.c b/source/blender/python/intern/bpy_rna.c
index 0ca96071ee0..98124464835 100644
--- a/source/blender/python/intern/bpy_rna.c
+++ b/source/blender/python/intern/bpy_rna.c
@@ -189,7 +189,8 @@ static void id_weakref_pool_add(ID *id, BPy_DummyPointerRNA *pyrna)
   PyObject *weakref_capsule;
   PyObject *weakref_cb_py;
 
-  /* create a new function instance and insert the list as 'self' so we can remove ourself from it */
+  /* Create a new function instance and insert the list as 'self'
+   * so we can remove ourself from it. */
   GHash *weakinfo_hash = id_weakref_pool_get(id); /* new or existing */
 
   weakref_capsule = PyCapsule_New(weakinfo_hash, NULL, NULL);
@@ -704,7 +705,8 @@ PyObject *pyrna_math_object_from_array(PointerRNA *ptr, PropertyRNA *prop)
       case PROP_QUATERNION:
         if (len == 3) { /* euler */
           if (is_thick) {
-            /* attempt to get order, only needed for thick types since wrapped with update via callbacks */
+            /* Attempt to get order,
+             * only needed for thick types since wrapped with update via callbacks. */
             PropertyRNA *prop_eul_order = NULL;
             short order = pyrna_rotation_euler_order_get(ptr, EULER_ORDER_XYZ, &prop_eul_order);
 
@@ -1433,7 +1435,8 @@ static PyObject *pyrna_enum_to_py(PointerRNA *ptr, PropertyRNA *prop, int val)
       RNA_property_enum_items_ex(NULL, ptr, prop, true, &enum_item, NULL, &free_dummy);
       BLI_assert(!free_dummy);
 
-      /* Do not print warning in case of DummyRNA_NULL_items, this one will never match any value... */
+      /* Do not print warning in case of DummyRNA_NULL_items,
+       * this one will never match any value... */
       if (enum_item != DummyRNA_NULL_items) {
         const char *ptr_name = RNA_struct_name_get_alloc(ptr, NULL, 0, NULL);
 
@@ -1846,7 +1849,8 @@ static int pyrna_py_to_prop(
           }
           else {
             /* same as bytes */
-            /* XXX, this is suspect but needed for function calls, need to see if theres a better way */
+            /* XXX, this is suspect but needed for function calls,
+             * need to see if theres a better way. */
             if (data) {
               *((char **)data) = (char *)param;
             }
@@ -1902,7 +1906,8 @@ static int pyrna_py_to_prop(
          * if the prop is not an operator type and the pyobject is an operator,
          * use its properties in place of its self.
          *
-         * this is so bad that its almost a good reason to do away with fake 'self.properties -> self'
+         * This is so bad that its almost a good reason to do away with fake
+         * 'self.properties -> self'
          * class mixing if this causes problems in the future it should be removed.
          */
         if ((ptr_type == &RNA_AnyType) && (BPy_StructRNA_Check(value))) {
@@ -1997,8 +2002,9 @@ static int pyrna_py_to_prop(
                 }
               }
               else {
-                /* for function calls, we sometimes want to pass the 'ptr' directly,
-                 * watch out that it remains valid!, possibly we could support this later if needed */
+                /* For function calls, we sometimes want to pass the 'ptr' directly,
+                 * watch out that it remains valid!,
+                 * possibly we could support this later if needed. */
                 BLI_assert(value_new == NULL);
                 if (value == Py_None) {
                   *((void **)data) = NULL;
@@ -4187,8 +4193,8 @@ static PyObject *pyrna_struct_getattro(BPy_StructRNA *self, PyObject *pyname)
     ret = NULL;
   }
   else if (
-      name[0] ==
-      '_') { /* rna can't start with a "_", so for __dict__ and similar we can skip using rna lookups */
+      /* rna can't start with a "_", so for __dict__ and similar we can skip using rna lookups */
+      name[0] == '_') {
     /* annoying exception, maybe we need to have different types for this... */
     if (STR_ELEM(name, "__getitem__", "__setitem__") &&
         !RNA_struct_idprops_check(self->ptr.type)) {
@@ -4312,9 +4318,11 @@ static PyObject *pyrna_struct_meta_idprop_getattro(PyObject *cls, PyObject *attr
    * >>> bpy.types.Scene.foo = BoolProperty()
    * >>> bpy.types.Scene.foo
    * <bpy_struct, BoolProperty("foo")>
-   * ...rather than returning the deferred class register tuple as checked by pyrna_is_deferred_prop()
+   * ...rather than returning the deferred class register tuple
+   * as checked by pyrna_is_deferred_prop()
    *
-   * Disable for now, this is faking internal behavior in a way that's too tricky to maintain well. */
+   * Disable for now,
+   * this is faking internal behavior in a way that's too tricky to maintain well. */
 #  if 0
   if (ret == NULL) { // || pyrna_is_deferred_prop(ret)
     StructRNA *srna = srna_from_self(cls, "StructRNA.__getattr__");
@@ -4424,7 +4432,8 @@ static int pyrna_struct_setattro(BPy_StructRNA *self, PyObject *pyname, PyObject
     }
   }
   else if (self->ptr.type == &RNA_Context) {
-    /* code just raises correct error, context prop's cant be set, unless its apart of the py class */
+    /* Code just raises correct error, context prop's cant be set,
+     * unless its apart of the py class. */
     bContext *C = self->ptr.data;
     if (C == NULL) {
       PyErr_Format(PyExc_AttributeError,
@@ -5105,7 +5114,8 @@ static int foreach_parse_args(BPy_PropertyRNA *self,
     }
     *size = RNA_raw_type_sizeof(*raw_type);
 
-#if 0 /* works fine but not strictly needed, we could allow RNA_property_collection_raw_* to do the checks */
+#if 0 /* works fine but not strictly needed,
+       * we could allow RNA_property_collection_raw_* to do the checks */
     if ((*attr_tot) < 1) {
       *attr_tot = 1;
     }
@@ -5130,8 +5140,9 @@ static int foreach_parse_args(BPy_PropertyRNA *self,
 #endif
   }
 
-  /* check 'attr_tot' otherwise we don't know if any values were set
-   * this isn't ideal because it means running on an empty list may fail silently when its not compatible. */
+  /* Check 'attr_tot' otherwise we don't know if any values were set
+   * this isn't ideal because it means running on an empty list may
+   * fail silently when its not compatible. */
   if (*size == 0 && *attr_tot != 0) {
     PyErr_SetString(PyExc_AttributeError, "attribute does not support foreach method");
     return -1;
@@ -5997,7 +6008,8 @@ static PyObject *pyrna_func_call(BPy_FunctionRNA *self, PyObject *args, PyObject
   /* Check if we gave args that don't exist in the function
    * printing the error is slow but it should only happen when developing.
    * the if below is quick, checking if it passed less keyword args then we gave.
-   * (Don't overwrite the error if we have one, otherwise can skip important messages and confuse with args)
+   * (Don't overwrite the error if we have one,
+   * otherwise can skip important messages and confuse with args).
    */
   if (err == 0 && kw && (pykw_len > kw_tot)) {
     PyObject *key, *value;
@@ -6894,7 +6906,8 @@ static PyObject *pyrna_prop_collection_iter_next(BPy_PropertyCollectionIterRNA *
       if ((PyObject *)pyrna != Py_None) {
         /* hold a reference to the iterator since it may have
          * allocated memory 'pyrna' needs. eg: introspecting dynamic enum's  */
-        /* TODO, we could have an api call to know if this is needed since most collections don't */
+        /* TODO, we could have an api call to know if this is
+         * needed since most collections don't */
         pyrna_struct_reference_set(pyrna, (PyObject *)self);
       }
     }
@@ -7025,8 +7038,10 @@ static PyObject *pyrna_srna_ExternalType(StructRNA *srna)
   /* sanity check, could skip this unless in debug mode */
   if (newclass) {
     PyObject *base_compare = pyrna_srna_PyBase(srna);
-    //PyObject *slots = PyObject_GetAttrString(newclass, "__slots__"); // cant do this because it gets superclasses values!
-    //PyObject *bases = PyObject_GetAttrString(newclass, "__bases__"); // can do this but faster not to.
+    /* Can't do this because it gets superclasses values! */
+    // PyObject *slots = PyObject_GetAttrString(newclass, "__slots__");
+    /* Can do this but faster not to. */
+    // PyObject *bases = PyObject_GetAttrString(newclass, "__bases__");
     PyObject *tp_bases = ((PyTypeObject *)newclass)->tp_bases;
     PyObject *tp_slots = PyDict_GetItem(((PyTypeObject *)newclass)->tp_dict,
                                         bpy_intern_str___slots__);
@@ -7077,7 +7092,10 @@ static PyObject *pyrna_srna_Subtype(StructRNA *srna)
     /* subclass equivalents
      * - class myClass(myBase):
      *     some = 'value' # or ...
-     * - myClass = type(name='myClass', bases=(myBase,), dict={'__module__': 'bpy.types', '__slots__': ()})
+     * - myClass = type(
+     *       name='myClass',
+     *       bases=(myBase,), dict={'__module__': 'bpy.types', '__slots__': ()}
+     *   )
      */
 
     /* Assume RNA_struct_py_type_get(srna) was already checked */
@@ -7132,7 +7150,8 @@ static PyObject *pyrna_srna_Subtype(StructRNA *srna)
     }
 #endif
 
-    /* newclass will now have 2 ref's, ???, probably 1 is internal since decrefing here segfaults */
+    /* Newclass will now have 2 ref's, ???,
+     * probably 1 is internal since decrefing here segfaults. */
 
     /* PyC_ObSpit("new class ref", newclass); */
 
@@ -7884,7 +7903,8 @@ static int bpy_class_validate_recursive(PointerRNA *dummyptr,
     const int flag = RNA_function_flag(func);
     /* TODO(campbell): this is used for classmethod's too,
      * even though class methods should have 'FUNC_USE_SELF_TYPE' set, see Operator.poll for eg.
-     * Keep this as-is since its working but we should be using 'FUNC_USE_SELF_TYPE' for many functions. */
+     * Keep this as-is since its working but we should be using
+     * 'FUNC_USE_SELF_TYPE' for many functions. */
     const bool is_staticmethod = (flag & FUNC_NO_SELF) && !(flag & FUNC_USE_SELF_TYPE);
 
     if (!(flag & FUNC_REGISTER)) {
@@ -7909,8 +7929,9 @@ static int bpy_class_validate_recursive(PointerRNA *dummyptr,
       PyErr_Clear();
     }
     else {
-      Py_DECREF(
-          item); /* no need to keep a ref, the class owns it (technically we should keep a ref but...) */
+      /* No need to keep a ref, the class owns it (technically we should keep a ref but...). */
+      Py_DECREF(item);
+
       if (is_staticmethod) {
         if (PyMethod_Check(item) == 0) {
           PyErr_Format(PyExc_TypeError,
@@ -8198,7 +8219,10 @@ static int bpy_class_call(bContext *C, PointerRNA *ptr, FunctionRNA *func, Param
       else {
         arg_count = ((PyCodeObject *)PyFunction_GET_CODE(item))->co_argcount;
       }
-      //          args = PyTuple_New(rna_function_arg_count(func)); /* first arg is included in 'item' */
+#if 0
+      /* First arg is included in 'item'. */
+      args = PyTuple_New(rna_function_arg_count(func));
+#endif
       args = PyTuple_New(arg_count); /* first arg is included in 'item' */
 
       if (is_staticmethod) {
diff --git a/source/blender/python/intern/bpy_rna.h b/source/blender/python/intern/bpy_rna.h
index 588c3cbf171..cf6bd54d8a5 100644
--- a/source/blender/python/intern/bpy_rna.h
+++ b/source/blender/python/intern/bpy_rna.h
@@ -24,7 +24,10 @@
 /* --- bpy build options --- */
 #ifdef WITH_PYTHON_SAFETY
 
-/* play it safe and keep optional for now, need to test further now this affects looping on 10000's of verts for eg. */
+/**
+ * Play it safe and keep optional for now,
+ * need to test further now this affects looping on 10000's of verts for eg.
+ */
 #  define USE_WEAKREFS
 
 /* method to invalidate removed py data, XXX, slow to remove objects, otherwise no overhead */
@@ -146,8 +149,10 @@ typedef struct {
   PropertyRNA *prop;
 
   /* Arystan: this is a hack to allow sub-item r/w access like: face.uv[n][m] */
-  int arraydim; /* array dimension, e.g: 0 for face.uv, 2 for face.uv[n][m], etc. */
-  int arrayoffset; /* array first item offset, e.g. if face.uv is [4][2], arrayoffset for face.uv[n] is 2n */
+  /** Array dimension, e.g: 0 for face.uv, 2 for face.uv[n][m], etc. */
+  int arraydim;
+  /** Array first item offset, e.g. if face.uv is [4][2], arrayoffset for face.uv[n] is 2n. */
+  int arrayoffset;
 } BPy_PropertyArrayRNA;
 
 typedef struct {
diff --git a/source/blender/python/intern/bpy_rna_array.c b/source/blender/python/intern/bpy_rna_array.c
index 847ecde354a..9d8fff5dfe4 100644
--- a/source/blender/python/intern/bpy_rna_array.c
+++ b/source/blender/python/intern/bpy_rna_array.c
@@ -86,7 +86,8 @@ typedef struct ItemConvert_FuncArg {
  */
 
 /* arr[3] = x, self->arraydim is 0, lvalue_dim is 1 */
-/* Ensures that a python sequence has expected number of items/sub-items and items are of desired type. */
+/* Ensures that a python sequence has expected number of
+ * items/sub-items and items are of desired type. */
 static int validate_array_type(PyObject *seq,
                                int dim,
                                int totdim,
@@ -203,7 +204,10 @@ static int validate_array_type(PyObject *seq,
       else if (!check_item_type(item)) {
         Py_DECREF(item);
 
-        /* BLI_snprintf(error_str, error_str_size, "sequence items should be of type %s", item_type_str); */
+#if 0
+        BLI_snprintf(
+            error_str, error_str_size, "sequence items should be of type %s", item_type_str);
+#endif
         PyErr_Format(PyExc_TypeError,
                      "%s expected sequence items of type %s, not %s",
                      error_prefix,
diff --git a/source/blender/python/intern/bpy_rna_id_collection.c b/source/blender/python/intern/bpy_rna_id_collection.c
index 78dae50efe6..dfd7624bd3d 100644
--- a/source/blender/python/intern/bpy_rna_id_collection.c
+++ b/source/blender/python/intern/bpy_rna_id_collection.c
@@ -34,7 +34,8 @@
 #include "BKE_main.h"
 
 #include "DNA_ID.h"
-/* Those folowing are only to support hack of not listing some internal 'backward' pointers in generated user_map... */
+/* Those folowing are only to support hack of not listing some internal
+ * 'backward' pointers in generated user_map. */
 #include "DNA_object_types.h"
 #include "DNA_key_types.h"
 
@@ -97,11 +98,13 @@ static int foreach_libblock_id_user_map_callback(void *user_data,
     }
 
     if ((GS(self_id->name) == ID_OB) && (id_p == (ID **)&((Object *)self_id)->proxy_from)) {
-      /* We skip proxy_from here, since it's some internal pointer which is not relevant info for py/API level. */
+      /* We skip proxy_from here,
+       * since it's some internal pointer which is not relevant info for py/API level. */
       return IDWALK_RET_NOP;
     }
     else if ((GS(self_id->name) == ID_KE) && (id_p == (ID **)&((Key *)self_id)->from)) {
-      /* We skip from here, since it's some internal pointer which is not relevant info for py/API level. */
+      /* We skip from here,
+       * since it's some internal pointer which is not relevant info for py/API level. */
       return IDWALK_RET_NOP;
     }
 
@@ -245,14 +248,16 @@ static PyObject *bpy_user_map(PyObject *UNUSED(self), PyObject *args, PyObject *
       if (!data_cb.is_subset &&
           /* We do not want to pre-add keys of flitered out types. */
           (key_types_bitmap == NULL || id_check_type(id, key_types_bitmap)) &&
-          /* We do not want to pre-add keys when we have filter on value types, but not on key types. */
+          /* We do not want to pre-add keys when we have filter on value types,
+           * but not on key types. */
           (val_types_bitmap == NULL || key_types_bitmap != NULL)) {
         PyObject *key = data_cb.py_id_key_lookup_only;
         PyObject *set;
 
         RNA_id_pointer_create(id, &((BPy_StructRNA *)key)->ptr);
 
-        /* We have to insert the key now, otherwise ID unused would be missing from final dict... */
+        /* We have to insert the key now,
+         * otherwise ID unused would be missing from final dict... */
         if ((set = PyDict_GetItem(data_cb.user_map, key)) == NULL) {
           /* Cannot use our placeholder key here! */
           key = pyrna_id_CreatePyObject(id);
diff --git a/source/blender/python/intern/bpy_utils_units.c b/source/blender/python/intern/bpy_utils_units.c
index b80ea50dd09..645b7e1c7af 100644
--- a/source/blender/python/intern/bpy_utils_units.c
+++ b/source/blender/python/intern/bpy_utils_units.c
@@ -66,8 +66,8 @@ static const char *bpyunits_ucategorie_items[] = {
 
 /**
  * These fields are just empty placeholders, actual values get set in initializations functions.
- * This allows us to avoid many handwriting, and above all, to keep all systems/categories definition stuff in
- * ``BKE_unit.h``.
+ * This allows us to avoid many handwriting, and above all,
+ * to keep all systems/categories definition stuff in ``BKE_unit.h``.
  */
 static PyStructSequence_Field bpyunits_systems_fields[ARRAY_SIZE(bpyunits_usystem_items)];
 static PyStructSequence_Field bpyunits_categories_fields[ARRAY_SIZE(bpyunits_ucategorie_items)];
@@ -281,9 +281,11 @@ static PyObject *bpyunits_to_string(PyObject *UNUSED(self), PyObject *args, PyOb
 
   {
     /* Maximum expected length of string result:
-     * - number itself: precision + decimal dot + up to four 'above dot' digits.
-     * - unit: up to ten chars (six currently, let's be conservative, also because we use some utf8 chars).
-     * This can be repeated twice (e.g. 1m20cm), and we add ten more spare chars (spaces, trailing '\0'...).
+     * - Number itself: precision + decimal dot + up to four 'above dot' digits.
+     * - Unit: up to ten chars
+     *   (six currently, let's be conservative, also because we use some utf8 chars).
+     * This can be repeated twice (e.g. 1m20cm), and we add ten more spare chars
+     * (spaces, trailing '\0'...).
      * So in practice, 64 should be more than enough.
      */
     char buf1[64], buf2[64], *str;
diff --git a/source/blender/python/mathutils/mathutils.c b/source/blender/python/mathutils/mathutils.c
index 32ffa4ad2da..d0fa9f5c565 100644
--- a/source/blender/python/mathutils/mathutils.c
+++ b/source/blender/python/mathutils/mathutils.c
@@ -381,13 +381,16 @@ int mathutils_any_to_rotmat(float rmat[3][3], PyObject *value, const char *error
 
 /* LomontRRDCompare4, Ever Faster Float Comparisons by Randy Dillon */
 /* XXX We may want to use 'safer' BLI's compare_ff_relative ultimately?
- *     LomontRRDCompare4() is an optimized version of Dawson's AlmostEqual2sComplement() (see [1] and [2]).
- *     Dawson himself now claims this is not a 'safe' thing to do (pushing ULP method beyond its limits),
- *     an recommends using work from [3] instead, which is done in BLI func...
+ * LomontRRDCompare4() is an optimized version of Dawson's AlmostEqual2sComplement()
+ * (see [1] and [2]).
+ * Dawson himself now claims this is not a 'safe' thing to do
+ * (pushing ULP method beyond its limits),
+ * an recommends using work from [3] instead, which is done in BLI func...
  *
- *     [1] http://www.randydillon.org/Papers/2007/everfast.htm
- *     [2] http://www.cygnus-software.com/papers/comparingfloats/comparingfloats.htm
- *     [3] https://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/ instead
+ * [1] http://www.randydillon.org/Papers/2007/everfast.htm
+ * [2] http://www.cygnus-software.com/papers/comparingfloats/comparingfloats.htm
+ * [3] https://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/
+ * instead.
  */
 #define SIGNMASK(i) (-(int)(((unsigned int)(i)) >> 31))
 
@@ -437,7 +440,8 @@ PyObject *mathutils_dynstr_to_py(struct DynStr *ds)
 
 /* Mathutils Callbacks */
 
-/* for mathutils internal use only, eventually should re-alloc but to start with we only have a few users */
+/* For mathutils internal use only,
+ * eventually should re-alloc but to start with we only have a few users. */
 #define MATHUTILS_TOT_CB 17
 static Mathutils_Callback *mathutils_callbacks[MATHUTILS_TOT_CB] = {NULL};
 
diff --git a/source/blender/python/mathutils/mathutils_Matrix.c b/source/blender/python/mathutils/mathutils_Matrix.c
index 6ccb3c2a291..7cc9ba50d90 100644
--- a/source/blender/python/mathutils/mathutils_Matrix.c
+++ b/source/blender/python/mathutils/mathutils_Matrix.c
@@ -1072,7 +1072,8 @@ static void matrix_invert_safe_internal(const MatrixObject *self, float *r_mat)
   if (det == 0.0f) {
     const float eps = PSEUDOINVERSE_EPSILON;
 
-    /* We will copy self->matrix into r_mat (if needed), and modify it in place to add diagonal epsilon. */
+    /* We will copy self->matrix into r_mat (if needed),
+     * and modify it in place to add diagonal epsilon. */
     in_mat = r_mat;
 
     switch (self->num_col) {
diff --git a/source/blender/python/mathutils/mathutils_Vector.c b/source/blender/python/mathutils/mathutils_Vector.c
index 7d73f165c1e..29861c56dc0 100644
--- a/source/blender/python/mathutils/mathutils_Vector.c
+++ b/source/blender/python/mathutils/mathutils_Vector.c
@@ -2377,12 +2377,15 @@ static PyObject *Vector_length_squared_get(VectorObject *self, void *UNUSED(clos
  *                                 '((%s | SWIZZLE_VALID_AXIS) | '
  *                                 '((%s | SWIZZLE_VALID_AXIS) << SWIZZLE_BITS_PER_AXIS) | '
  *                                 '((%s | SWIZZLE_VALID_AXIS) << (SWIZZLE_BITS_PER_AXIS * 2)) | '
- *                                 '((%s | SWIZZLE_VALID_AXIS) << (SWIZZLE_BITS_PER_AXIS * 3)))  ' %
+ *                                 '((%s | SWIZZLE_VALID_AXIS) << (SWIZZLE_BITS_PER_AXIS * 3)))  '
+ *                                 %
  *                                 (axis_0_pos, axis_1_pos, axis_2_pos, axis_3_pos))
  *
  *     axises = axises[:-1]
  * items = list(axis_dict.items())
- * items.sort(key=lambda a: a[0].replace('x', '0').replace('y', '1').replace('z', '2').replace('w', '3'))
+ * items.sort(
+ *     key=lambda a: a[0].replace('x', '0').replace('y', '1').replace('z', '2').replace('w', '3')
+ * )
  *
  * unique = set()
  * for key, val in items:
diff --git a/source/blender/python/mathutils/mathutils_geometry.c b/source/blender/python/mathutils/mathutils_geometry.c
index 5fe3536d899..c39954713b1 100644
--- a/source/blender/python/mathutils/mathutils_geometry.c
+++ b/source/blender/python/mathutils/mathutils_geometry.c
@@ -1043,7 +1043,13 @@ static PyObject *M_Geometry_points_in_planes(PyObject *UNUSED(self), PyObject *a
               if (len_squared_v3(n3n1) > eps) {
                 const float quotient = dot_v3v3(N1, n2n3);
                 if (fabsf(quotient) > eps) {
-                  /* potentialVertex = (n2n3 * N1[3] + n3n1 * N2[3] + n1n2 * N3[3]) * (-1.0 / quotient); */
+                  /**
+                   * <pre>
+                   * potentialVertex = (
+                   *     (n2n3 * N1[3] + n3n1 * N2[3] + n1n2 * N3[3]) *
+                   *     (-1.0 / quotient));
+                   * </pre>
+                   */
                   const float quotient_ninv = -1.0f / quotient;
                   potentialVertex[0] = ((n2n3[0] * N1[3]) + (n3n1[0] * N2[3]) +
                                         (n1n2[0] * N3[3])) *