Cleanup: spelling in comments (make check_spelling_*)

Also replace term "playhead" with "current-frame".

intern/ghost/intern/GHOST_ContextVK.cc

@@ -927,9 +927,9 @@ GHOST_TSuccess GHOST_ContextVK::recreateSwapchain()
     }
   }
 
-  /* Windows/NVIDIA doesn't support creating a surface image with resolution 0,0. Minimuzed windows
-   * have an extent of 0,0. Although it fits in the specs returned by
-   * vkGetPhysicalDeviceSurfaceCapabilitiesKHR.
+  /* Windows/NVIDIA doesn't support creating a surface image with resolution 0,0.
+   * Minimized windows have an extent of 0,0. Although it fits in the specs returned by
+   * #vkGetPhysicalDeviceSurfaceCapabilitiesKHR.
    *
    * Ref #138032
    */

source/blender/blenkernel/intern/mesh_normals.cc

@@ -1004,7 +1004,7 @@ static void add_corner_to_edge(const Span<int> corner_edges,
   }
   else if (const EdgeOneCorner *info_one_edge = std::get_if<EdgeOneCorner>(&info)) {
     /* If the edge ends up being used by faces, we still have to check if the winding direction
-     * changes. Though it's an undesireable situation for the mesh to be in, we shouldn't propogate
+     * changes. Though it's an undesirable situation for the mesh to be in, we shouldn't propagate
      * smooth normals across edges facing opposite directions. Breaking the flow on these winding
      * direction changes also simplifies the fan traversal later on; without it the we couldn't
      * traverse by just continuing to use the next/previous corner. */

source/blender/editors/space_node/node_draw.cc

@@ -4077,15 +4077,15 @@ static FrameNodeLayout frame_node_layout(const bNode &frame_node)
   frame_layout.has_label = frame_node.label[0] != '\0';
 
   /* This is not the actual height of the letters in the label, but an approximation that includes
-   * some of the whitespace above and below the actual letters. */
+   * some of the white-space above and below the actual letters. */
   frame_layout.label_height = frame_data->label_size * UI_SCALE_FAC;
 
   /* The side and bottom margins are 50% bigger than the widget unit */
   frame_layout.margin = 1.5f * U.widget_unit;
 
   if (frame_layout.has_label) {
-    /* The label takes up 1.5 times the label height plus .2 times the margin.
-     * These coefficients are selected to provide good layout and spacing for descenders. */
+    /* The label takes up 1.5 times the label height plus 0.2 times the margin.
+     * These coefficients are selected to provide good layout and spacing for the descenders. */
     float room_for_label = 1.5f * frame_layout.label_height + 0.2f * frame_layout.margin;
 
     /* Make top margin bigger, if needed for the label, but never smaller than the side margins. */

source/blender/gpu/GPU_format.hh

@@ -237,7 +237,7 @@ enum class DataFormat : uint8_t {
 /* -------------------------------------------------------------------- */
 /** \name Utilities
  *
- * Allow querying informations about the format enum values.
+ * Allow querying information about the format enum values.
  * \{ */
 
 /* NOTE: Compressed format bytesize are rounded up as their actual value is fractional. */

source/blender/gpu/GPU_texture.hh

@@ -131,7 +131,7 @@ inline constexpr DataFormat to_data_format(TextureFormat format)
 }
 
 /**
- * Formats compatible with framebuffer attachments.
+ * Formats compatible with frame-buffer attachments.
  */
 enum class TextureTargetFormat : uint8_t {
   Invalid = 0,

source/blender/sequencer/intern/cache/final_image_cache.hh

@@ -8,8 +8,8 @@
  * Cache of final rendered frames.
  * - Keyed by (timeline frame, view_id).
  * - When full, cache eviction policy is to remove frames furthest
- *   from the current playhead, biasing towards removal of
- *   frames behind the playhead.
+ *   from the current-frame, biasing towards removal of
+ *   frames behind the current-frame.
  * - Invalidated fairly often while editing, basically whenever any
  *   strip overlapping that frame changes.
  */

source/blender/sequencer/intern/cache/source_image_cache.hh

@@ -11,8 +11,8 @@
  *   any other strips (images, movies, no-input effect strips like
  *   Text and Color).
  * - When full, cache eviction policy is to remove frames furthest
- *   from the current playhead, biasing towards removal of
- *   frames behind the playhead.
+ *   from the current-frame, biasing towards removal of
+ *   frames behind the current-frame.
  * - Invalidated fairly rarely, since the cached items only change
  *   when the source content changes.
  */

tools/check_source/check_spelling_config.py

@@ -139,6 +139,7 @@ dict_custom = {
     "dereferencing",
     "derivates",
     "desaturate",
+    "descenders",
     "designator",
     "despeckle",
     "despeckled",
@@ -393,6 +394,7 @@ dict_custom = {
     "stepsize",
     "stepwise",
     "stitchable",
+    "strobing",
     "subclass",
     "subclasses",
     "subclassing",