Cleanup: spelling in comments

source/blender/blenfont/intern/blf_glyph.c

@@ -42,9 +42,11 @@
 #include "BLI_strict_flags.h"
 #include "BLI_string_utf8.h"
 
-/* Convert glyph converage amounts to lightness values. Uses a LUT that perceptually improves
+/**
+ * Convert glyph coverage amounts to lightness values. Uses a LUT that perceptually improves
  * anti-aliasing and results in text that looks a bit fuller and slightly brighter. This should
- * be reconsidered in some - or all - cases when we transform the entire UI. */
+ * be reconsidered in some - or all - cases when we transform the entire UI.
+ */
 #define BLF_GAMMA_CORRECT_GLYPHS
 
 /* -------------------------------------------------------------------- */
@@ -190,19 +192,20 @@ static GlyphBLF *blf_glyph_cache_find_glyph(GlyphCacheBLF *gc, uint charcode)
 
 #ifdef BLF_GAMMA_CORRECT_GLYPHS
 
-/* Gamma correction of glyph converage values with widely-recommended gamma of 1.43.
+/**
+ * Gamma correction of glyph coverage values with widely-recommended gamma of 1.43.
  * "The reasons are historical. Because so many programmers have neglected gamma blending for so
  * long, people who have created fonts have tried to work around the problem of fonts looking too
- * thin by just making the fonts thicker! Obviously it doesn’t help the jaggedness, but it does
+ * thin by just making the fonts thicker! Obviously it doesn't help the jaggedness, but it does
  * make them look the proper weight, as originally intended. The obvious problem with this is
  * that if we want to gamma blend correctly many older fonts will look wrong. So we compromise,
- * and use a lower gamma value, so we get a bit better antialiasing, but the fonts don’t look too
+ * and use a lower gamma value, so we get a bit better anti-aliasing, but the fonts don't look too
  * heavy."
  * https://www.puredevsoftware.com/blog/2019/01/22/sub-pixel-gamma-correct-font-rendering/
  */
 static char blf_glyph_gamma(char c)
 {
-  /* The following is (char)(powf(c / 256.0f, 1.0f / 1.43f) * 256.0f). */
+  /* The following is `(char)(powf(c / 256.0f, 1.0f / 1.43f) * 256.0f)`. */
   static const char gamma[256] = {
       0,   5,   9,   11,  14,  16,  19,  21,  23,  25,  26,  28,  30,  32,  34,  35,  37,  38,
       40,  41,  43,  44,  46,  47,  49,  50,  52,  53,  54,  56,  57,  58,  60,  61,  62,  64,

source/blender/blenkernel/BKE_outliner_treehash.hh

@@ -26,23 +26,24 @@ class TreeHash {
  public:
   ~TreeHash();
 
-  /* create and fill hashtable with treestore elements */
+  /** Create and fill hash-table with treestore elements */
   static std::unique_ptr<TreeHash> create_from_treestore(BLI_mempool &treestore);
 
-  /* full rebuild for already allocated hashtable */
+  /** Full rebuild for already allocated hash-table. */
   void rebuild_from_treestore(BLI_mempool &treestore);
 
-  /* clear element usage flags */
+  /** Clear element usage flags. */
   void clear_used();
 
-  /* Add/remove hashtable elements */
+  /** Add hash-table element. */
   void add_element(TreeStoreElem &elem);
+  /** Remove hash-table element. */
   void remove_element(TreeStoreElem &elem);
 
-  /* find first unused element with specific type, nr and id */
+  /** Find first unused element with specific type, nr and id. */
   TreeStoreElem *lookup_unused(short type, short nr, ID *id) const;
 
-  /* find user or unused element with specific type, nr and id */
+  /** Find user or unused element with specific type, nr and id. */
   TreeStoreElem *lookup_any(short type, short nr, ID *id) const;
 
  private:

source/blender/blenkernel/intern/outliner_treehash.cc

@@ -39,9 +39,11 @@ class TseGroup {
 /* Only allow reset of #TseGroup.lastused counter to 0 once every 1k search. */
 #define TSEGROUP_LASTUSED_RESET_VALUE 10000
 
-/* Allocate structure for TreeStoreElements;
+/**
+   Allocate structure for TreeStoreElements;
  * Most of elements in treestore have no duplicates,
- * so there is no need to preallocate memory for more than one pointer */
+ * so there is no need to pre-allocate memory for more than one pointer.
+ */
 static TseGroup *tse_group_create(void)
 {
   TseGroup *tse_group = MEM_new<TseGroup>("TseGroup");

source/blender/editors/animation/anim_filter.c

@@ -3406,9 +3406,8 @@ static size_t animdata_filter_remove_duplis(ListBase *anim_data)
   GSet *gs;
   size_t items = 0;
 
-  /* build new hashtable to efficiently store and retrieve which entries have been
-   * encountered already while searching
-   */
+  /* Build new hash-table to efficiently store and retrieve which entries have been
+   * encountered already while searching. */
   gs = BLI_gset_ptr_new(__func__);
 
   /* loop through items, removing them from the list if a similar item occurs already */

source/blender/freestyle/intern/geometry/FastGrid.h

@@ -12,7 +12,7 @@
 namespace Freestyle {
 
 /** Class to define a regular grid used for ray casting computations
- *  We don't use a hashtable here. The grid is explicitly stored for faster computations.
+ *  We don't use a hash-table here. The grid is explicitly stored for faster computations.
  *  However, this might result in significant increase in memory usage
  *  (compared to the regular grid).
  */
@@ -31,7 +31,7 @@ class FastGrid : public Grid {
 
   /**
    * clears the grid
-   * Deletes all the cells, clears the hashtable, resets size, size of cell, number of cells.
+   * Deletes all the cells, clears the hash-table, resets size, size of cell, number of cells.
    */
   virtual void clear();
 

source/blender/freestyle/intern/geometry/Grid.h

@@ -187,7 +187,7 @@ class Grid {
   }
 
   /** clears the grid
-   *  Deletes all the cells, clears the hashtable, resets size, size of cell, number of cells.
+   *  Deletes all the cells, clears the hash-table, resets size, size of cell, number of cells.
    */
   virtual void clear();
 

source/blender/freestyle/intern/geometry/HashGrid.h

@@ -52,7 +52,7 @@ class HashGrid : public Grid {
   }
 
   /** clears the grid
-   *  Deletes all the cells, clears the hashtable, resets size, size of cell, number of cells.
+   *  Deletes all the cells, clears the hash-table, resets size, size of cell, number of cells.
    */
   virtual void clear();
 

source/blender/nodes/composite/nodes/node_composite_bokehimage.cc

@@ -91,7 +91,7 @@ class BokehImageOperation : public NodeOperation {
     return *static_cast<NodeBokehImage *>(bnode().storage);
   }
 
-  /* The exterior angle is the angle between each two consective vertices of the regular polygon
+  /* The exterior angle is the angle between each two consecutive vertices of the regular polygon
    * from its center. */
   float get_exterior_angle()
   {