spelling cleanup

41 files changed, 89 insertions, 88 deletions

diff --git a/source/blender/blenkernel/BKE_DerivedMesh.h b/source/blender/blenkernel/BKE_DerivedMesh.h
index e90646c72ee..493a5ec285f 100644
--- a/source/blender/blenkernel/BKE_DerivedMesh.h
+++ b/source/blender/blenkernel/BKE_DerivedMesh.h
@@ -98,7 +98,7 @@ struct PBVH;
 #define SUB_ELEMS_FACE 50
 
 /*
- * Note: all mface interfaces now officially operate on tesselated data.
+ * Note: all mface interfaces now officially operate on tessellated data.
  *       Also, the mface origindex layer indexes mpolys, not mfaces.
  */
 
@@ -174,7 +174,7 @@ struct DerivedMesh {
 	int (*getNumLoops)(DerivedMesh *dm);
 	int (*getNumPolys)(DerivedMesh *dm);
 
-	/* copy a single vert/edge/tesselated face from the derived mesh into
+	/* copy a single vert/edge/tessellated face from the derived mesh into
 	 * *{vert/edge/face}_r. note that the current implementation
 	 * of this function can be quite slow, iterating over all
 	 * elements (editmesh)
diff --git a/source/blender/blenkernel/BKE_cdderivedmesh.h b/source/blender/blenkernel/BKE_cdderivedmesh.h
index fed200d7be0..bdfe7366f9e 100644
--- a/source/blender/blenkernel/BKE_cdderivedmesh.h
+++ b/source/blender/blenkernel/BKE_cdderivedmesh.h
@@ -76,7 +76,7 @@ struct DerivedMesh *CDDM_copy_from_tessface(struct DerivedMesh *dm);
 
 /* creates a CDDerivedMesh with the same layer stack configuration as the
  * given DerivedMesh and containing the requested numbers of elements.
- * elements are initialised to all zeros
+ * elements are initialized to all zeros
  */
 struct DerivedMesh *CDDM_from_template(struct DerivedMesh *source,
                                   int numVerts, int numEdges, int numFaces,
@@ -103,7 +103,7 @@ void CDDM_calc_normals_tessface(struct DerivedMesh *dm);
 
 /* calculates edges for a CDDerivedMesh (from face data)
  * this completely replaces the current edge data in the DerivedMesh
- * builds edges from the tesselated face data.
+ * builds edges from the tessellated face data.
  */
 void CDDM_calc_edges_tessface(struct DerivedMesh *dm);
 
diff --git a/source/blender/blenkernel/BKE_customdata.h b/source/blender/blenkernel/BKE_customdata.h
index 27b27ce5b42..a22182a52f5 100644
--- a/source/blender/blenkernel/BKE_customdata.h
+++ b/source/blender/blenkernel/BKE_customdata.h
@@ -73,10 +73,11 @@ extern const CustomDataMask CD_MASK_FACECORNERS;
 
 #define CD_TYPE_AS_MASK(_type) (CustomDataMask)((CustomDataMask)1 << (CustomDataMask)(_type))
 
-/* Checks if the layer at physical offset layern (in data->layers) support math
+/**
+ * Checks if the layer at physical offset \a layer_n (in data->layers) support math
  * the below operations.
  */
-int CustomData_layer_has_math(struct CustomData *data, int layern);
+int CustomData_layer_has_math(struct CustomData *data, int layer_n);
 
 /* copies the "value" (e.g. mloopuv uv or mloopcol colors) from one block to
  * another, while not overwriting anything else (e.g. flags).  probably only
diff --git a/source/blender/blenkernel/BKE_object.h b/source/blender/blenkernel/BKE_object.h
index f5937304e76..971320765e9 100644
--- a/source/blender/blenkernel/BKE_object.h
+++ b/source/blender/blenkernel/BKE_object.h
@@ -109,7 +109,7 @@ void object_boundbox_flag(struct Object *ob, int flag, int set);
 void minmax_object(struct Object *ob, float min[3], float max[3]);
 int minmax_object_duplis(struct Scene *scene, struct Object *ob, float min[3], float max[3]);
 
-/* sometimes min-max isnt enough, we need to loop over each point */
+/* sometimes min-max isn't enough, we need to loop over each point */
 void BKE_object_foreach_display_point(
         struct Object *ob, float obmat[4][4],
         void (*func_cb)(const float[3], void *), void *user_data);
diff --git a/source/blender/blenkernel/BKE_shrinkwrap.h b/source/blender/blenkernel/BKE_shrinkwrap.h
index 446084053de..626dd64e21e 100644
--- a/source/blender/blenkernel/BKE_shrinkwrap.h
+++ b/source/blender/blenkernel/BKE_shrinkwrap.h
@@ -90,7 +90,7 @@ void space_transform_invert(const struct SpaceTransform *data, float *co);
  *    - Normal projection
  *
  * ShrinkwrapCalcData encapsulates all needed data for shrinkwrap functions.
- * (So that you dont have to pass an enormous amount of arguments to functions)
+ * (So that you don't have to pass an enormous amount of arguments to functions)
  */
 
 struct Object;
diff --git a/source/blender/blenkernel/intern/DerivedMesh.c b/source/blender/blenkernel/intern/DerivedMesh.c
index 99629a2e27b..906733d1f26 100644
--- a/source/blender/blenkernel/intern/DerivedMesh.c
+++ b/source/blender/blenkernel/intern/DerivedMesh.c
@@ -1946,8 +1946,8 @@ static void editbmesh_calc_modifiers(Scene *scene, Object *ob, BMEditMesh *em, D
 
 	/* --- */
 	/* BMESH_ONLY, ensure tessface's used for drawing,
-	 * but dont recalculate if the last modifier in the stack gives us tessfaces
-	 * check if the derived meshes are DM_TYPE_EDITBMESH before calling, this isnt essential
+	 * but don't recalculate if the last modifier in the stack gives us tessfaces
+	 * check if the derived meshes are DM_TYPE_EDITBMESH before calling, this isn't essential
 	 * but quiets annoying error messages since tessfaces wont be created. */
 	if ((*final_r)->type != DM_TYPE_EDITBMESH) {
 		DM_ensure_tessface(*final_r);
diff --git a/source/blender/blenkernel/intern/action.c b/source/blender/blenkernel/intern/action.c
index b1b98c030eb..dcd4a712dbb 100644
--- a/source/blender/blenkernel/intern/action.c
+++ b/source/blender/blenkernel/intern/action.c
@@ -1054,7 +1054,7 @@ short action_get_item_transforms (bAction *act, Object *ob, bPoseChannel *pchan,
 /* Copy the data from the action-pose (src) into the pose */
 /* both args are assumed to be valid */
 /* exported to game engine */
-/* Note! this assumes both poses are aligned, this isnt always true when dealing with user poses */
+/* Note! this assumes both poses are aligned, this isn't always true when dealing with user poses */
 void extract_pose_from_pose(bPose *pose, const bPose *src)
 {
 	const bPoseChannel *schan;
diff --git a/source/blender/blenkernel/intern/blender.c b/source/blender/blenkernel/intern/blender.c
index a8644618945..30f4e9f2816 100644
--- a/source/blender/blenkernel/intern/blender.c
+++ b/source/blender/blenkernel/intern/blender.c
@@ -373,7 +373,7 @@ int BKE_read_file(bContext *C, const char *filepath, ReportList *reports)
 	BlendFileData *bfd;
 	int retval= BKE_READ_FILE_OK;
 
-	if(strstr(filepath, BLENDER_STARTUP_FILE)==NULL) /* dont print user-pref loading */
+	if(strstr(filepath, BLENDER_STARTUP_FILE)==NULL) /* don't print user-pref loading */
 		printf("read blend: %s\n", filepath);
 
 	bfd= BLO_read_from_file(filepath, reports);
diff --git a/source/blender/blenkernel/intern/bvhutils.c b/source/blender/blenkernel/intern/bvhutils.c
index bbe210f2ce6..167104e1da9 100644
--- a/source/blender/blenkernel/intern/bvhutils.c
+++ b/source/blender/blenkernel/intern/bvhutils.c
@@ -545,7 +545,7 @@ BVHTree* bvhtree_from_mesh_faces(BVHTreeFromMesh *data, DerivedMesh *mesh, float
 
 					/* Insert BMesh-tessellation triangles into the bvh tree, unless they are hidden
 					 * and/or selected. Even if the faces themselves are not selected for the snapped
-					 * transform, having a vertex selected means the face (and thus it's tesselated
+					 * transform, having a vertex selected means the face (and thus it's tessellated
 					 * triangles) will be moving and will not be a good snap targets.*/
 					for (i = 0; i < em->tottri; i++) {
 						BMLoop **tri = em->looptris[i];
@@ -554,12 +554,12 @@ BVHTree* bvhtree_from_mesh_faces(BVHTreeFromMesh *data, DerivedMesh *mesh, float
 						BMIter iter;
 						int insert;
 
-						/* Each loop of the triangle points back to the BMFace it was tesselated from.
+						/* Each loop of the triangle points back to the BMFace it was tessellated from.
 						 * All three should point to the same face, so just use the face from the first
 						 * loop.*/
 						f = tri[0]->f;
 
-						/* If the looptris is ordered such that all triangles tesselated from a single
+						/* If the looptris is ordered such that all triangles tessellated from a single
 						 * faces are consecutive elements in the array, then we could speed up the tests
 						 * below by using the insert value from the previous iteration.*/
 
@@ -567,14 +567,14 @@ BVHTree* bvhtree_from_mesh_faces(BVHTreeFromMesh *data, DerivedMesh *mesh, float
 						insert = 1;
 
 						if (BM_elem_flag_test(f, BM_ELEM_SELECT) || BM_elem_flag_test(f, BM_ELEM_HIDDEN)) {
-							/* Don't insert triangles tesselated from faces that are hidden
+							/* Don't insert triangles tessellated from faces that are hidden
 							 * or selected*/
 							insert = 0;
 						}
 						else {
 							BM_ITER(v, &iter, em->bm, BM_VERTS_OF_FACE, f) {
 								if (BM_elem_flag_test(v, BM_ELEM_SELECT)) {
-									/* Don't insert triangles tesselated from faces that have
+									/* Don't insert triangles tessellated from faces that have
 									 * any selected verts.*/
 									insert = 0;
 								}
diff --git a/source/blender/blenkernel/intern/camera.c b/source/blender/blenkernel/intern/camera.c
index f55ceab7de8..7180d157b96 100644
--- a/source/blender/blenkernel/intern/camera.c
+++ b/source/blender/blenkernel/intern/camera.c
@@ -465,7 +465,7 @@ static void camera_to_frame_view_cb(const float co[3], void *user_data)
 	data->tot++;
 }
 
-/* dont move the camera, just yield the fit location */
+/* don't move the camera, just yield the fit location */
 /* only valid for perspective cameras */
 int camera_view_frame_fit_to_scene(Scene *scene, struct View3D *v3d, Object *camera_ob, float r_co[3])
 {
diff --git a/source/blender/blenkernel/intern/cdderivedmesh.c b/source/blender/blenkernel/intern/cdderivedmesh.c
index afde9d806c6..85620faf993 100644
--- a/source/blender/blenkernel/intern/cdderivedmesh.c
+++ b/source/blender/blenkernel/intern/cdderivedmesh.c
@@ -1193,7 +1193,7 @@ static void cdDM_drawMappedFacesGLSL(DerivedMesh *dm,
 							}
 						}
 						else {
-							/* if the buffer was set, dont use it again.
+							/* if the buffer was set, don't use it again.
 							 * prevdraw was assumed true but didnt run so set to false - [#21036] */
 							/* prevdraw= 0; */ /* UNUSED */
 							buffer= NULL;
diff --git a/source/blender/blenkernel/intern/constraint.c b/source/blender/blenkernel/intern/constraint.c
index e0125891e86..666a5cf3054 100644
--- a/source/blender/blenkernel/intern/constraint.c
+++ b/source/blender/blenkernel/intern/constraint.c
@@ -4575,7 +4575,7 @@ void copy_constraints (ListBase *dst, const ListBase *src, int do_extern)
 			if (cti->copy_data)
 				cti->copy_data(con, srccon);
 			
-			/* for proxies we dont want to make extern */
+			/* for proxies we don't want to make extern */
 			if (do_extern) {
 				/* go over used ID-links for this constraint to ensure that they are valid for proxies */
 				if (cti->id_looper)
diff --git a/source/blender/blenkernel/intern/customdata.c b/source/blender/blenkernel/intern/customdata.c
index 1387b2be884..e4709e37316 100644
--- a/source/blender/blenkernel/intern/customdata.c
+++ b/source/blender/blenkernel/intern/customdata.c
@@ -2313,9 +2313,9 @@ void *CustomData_bmesh_get_layer_n(const CustomData *data, void *block, int n)
 	return (char *)block + data->layers[n].offset;
 }
 
-int CustomData_layer_has_math(struct CustomData *data, int layern)
+int CustomData_layer_has_math(struct CustomData *data, int layer_n)
 {
-	const LayerTypeInfo *typeInfo = layerType_getInfo(data->layers[layern].type);
+	const LayerTypeInfo *typeInfo = layerType_getInfo(data->layers[layer_n].type);
 	
 	if (typeInfo->equal && typeInfo->add && typeInfo->multiply && 
 	    typeInfo->initminmax && typeInfo->dominmax) return 1;
diff --git a/source/blender/blenkernel/intern/deform.c b/source/blender/blenkernel/intern/deform.c
index 6158d2f8608..e5f2d152edf 100644
--- a/source/blender/blenkernel/intern/deform.c
+++ b/source/blender/blenkernel/intern/deform.c
@@ -416,7 +416,7 @@ void defgroup_unique_name(bDeformGroup *dg, Object *ob)
 
 /* finds the best possible flipped name. For renaming; check for unique names afterwards */
 /* if strip_number: removes number extensions
- * note: dont use sizeof() for 'name' or 'from_name' */
+ * note: don't use sizeof() for 'name' or 'from_name' */
 void flip_side_name(char name[MAX_VGROUP_NAME], const char from_name[MAX_VGROUP_NAME], int strip_number)
 {
 	int     len;
@@ -540,8 +540,8 @@ float defvert_find_weight(const struct MDeformVert *dvert, const int defgroup)
 }
 
 /* take care with this the rationale is:
- * - if the object has no vertex group. act like vertex group isnt set and return 1.0,
- * - if the vertex group exists but the 'defgroup' isnt found on this vertex, _still_ return 0.0
+ * - if the object has no vertex group. act like vertex group isn't set and return 1.0,
+ * - if the vertex group exists but the 'defgroup' isn't found on this vertex, _still_ return 0.0
  *
  * This is a bit confusing, just saves some checks from the caller.
  */
@@ -645,7 +645,7 @@ void defvert_remove_group(MDeformVert *dvert, MDeformWeight *dw)
 		if (dvert->totweight) {
 			dw_new = MEM_mallocN(sizeof(MDeformWeight)*(dvert->totweight), __func__);
 			if (dvert->dw) {
-#if 1			/* since we dont care about order, swap this with the last, save a memcpy */
+#if 1			/* since we don't care about order, swap this with the last, save a memcpy */
 				if (i != dvert->totweight) {
 					dvert->dw[i]= dvert->dw[dvert->totweight];
 				}
diff --git a/source/blender/blenkernel/intern/displist.c b/source/blender/blenkernel/intern/displist.c
index a778a457976..a1b1da32af7 100644
--- a/source/blender/blenkernel/intern/displist.c
+++ b/source/blender/blenkernel/intern/displist.c
@@ -708,7 +708,7 @@ static ModifierData *curve_get_tesselate_point(Scene *scene, Object *ob, int for
 			preTesselatePoint = md;
 
 			/* this modifiers are moving point of tessellation automatically
-			 * (some of them even can't be applied on tesselated curve), set flag
+			 * (some of them even can't be applied on tessellated curve), set flag
 			 * for incformation button in modifier's header */
 			md->mode |= eModifierMode_ApplyOnSpline;
 		} else if(md->mode&eModifierMode_ApplyOnSpline) {
diff --git a/source/blender/blenkernel/intern/dynamicpaint.c b/source/blender/blenkernel/intern/dynamicpaint.c
index ea3e31de75c..310d370de38 100644
--- a/source/blender/blenkernel/intern/dynamicpaint.c
+++ b/source/blender/blenkernel/intern/dynamicpaint.c
@@ -472,7 +472,7 @@ static int subframe_updateObject(Scene *scene, Object *ob, int flags, float fram
 	DynamicPaintModifierData *pmd = (DynamicPaintModifierData *)modifiers_findByType(ob, eModifierType_DynamicPaint);
 	bConstraint *con;
 
-	/* if other is dynamic paint canvas, dont update */
+	/* if other is dynamic paint canvas, don't update */
 	if (pmd && pmd->canvas)
 		return 1;
 
@@ -1506,7 +1506,7 @@ int dynamicPaint_resetSurface(DynamicPaintSurface *surface)
 	/* free existing data */
 	if (surface->data) dynamicPaint_freeSurfaceData(surface);
 
-	/* dont reallocate for image sequence types. they get handled only on bake */
+	/* don't reallocate for image sequence types. they get handled only on bake */
 	if (surface->format == MOD_DPAINT_SURFACE_F_IMAGESEQ) return 1;
 	if (numOfPoints < 1) return 0;
 
@@ -2331,7 +2331,7 @@ int dynamicPaint_createUVSurface(DynamicPaintSurface *surface)
 				int index = tx+w*ty;
 				PaintUVPoint *tPoint = (&tempPoints[index]);
 
-				/* If point isnt't on canvas mesh	*/
+				/* If point isn't't on canvas mesh	*/
 				if (tPoint->face_index == -1) {
 					int u_min, u_max, v_min, v_max;
 					int u,v, ind;
@@ -2635,7 +2635,7 @@ void dynamicPaint_outputSurfaceImage(DynamicPaintSurface *surface, char* filenam
 		}
 	}
 
-	/* Set output format, png in case exr isnt supported */
+	/* Set output format, png in case exr isn't supported */
 	ibuf->ftype= PNG|95;
 #ifdef WITH_OPENEXR
 	if (format == R_IMF_IMTYPE_OPENEXR) {	/* OpenEXR 32-bit float */
@@ -4931,7 +4931,7 @@ int dynamicPaint_calculateFrame(DynamicPaintSurface *surface, Scene *scene, Obje
 	/* update bake data */
 	dynamicPaint_generateBakeData(surface, scene, cObject); 
 	
-	/* dont do substeps for first frame */
+	/* don't do substeps for first frame */
 	if (surface->substeps && (frame != surface->start_frame)) {
 		int st;
 		timescale = 1.0f / (surface->substeps+1);
diff --git a/source/blender/blenkernel/intern/effect.c b/source/blender/blenkernel/intern/effect.c
index 117414060df..f3abc20fab7 100644
--- a/source/blender/blenkernel/intern/effect.c
+++ b/source/blender/blenkernel/intern/effect.c
@@ -787,7 +787,7 @@ static void do_texture_effector(EffectorCache *eff, EffectorData *efd, EffectedP
 		tex_co[2] += nabla;
 		multitex_ext(eff->pd->tex, tex_co, NULL, NULL, 0, result+3);
 
-		if(mode == PFIELD_TEX_GRAD || !hasrgb) { /* if we dont have rgb fall back to grad */
+		if(mode == PFIELD_TEX_GRAD || !hasrgb) { /* if we don't have rgb fall back to grad */
 			force[0] = (result[0].tin - result[1].tin) * strength;
 			force[1] = (result[0].tin - result[2].tin) * strength;
 			force[2] = (result[0].tin - result[3].tin) * strength;
diff --git a/source/blender/blenkernel/intern/fcurve.c b/source/blender/blenkernel/intern/fcurve.c
index 59f62c43b73..65bf9f0219e 100644
--- a/source/blender/blenkernel/intern/fcurve.c
+++ b/source/blender/blenkernel/intern/fcurve.c
@@ -841,7 +841,7 @@ void testhandles_fcurve (FCurve *fcu, const short use_handle)
 	for (a=0, bezt=fcu->bezt; a < fcu->totvert; a++, bezt++) {
 		short flag= 0;
 		
-		/* flag is initialised as selection status
+		/* flag is initialized as selection status
 		 * of beztriple control-points (labelled 0,1,2)
 		 */
 		if (bezt->f2 & SELECT) flag |= (1<<1); // == 2
@@ -1446,7 +1446,7 @@ void driver_change_variable_type (DriverVar *dvar, int type)
 		/* store the flags */
 		dtar->flag = flags;
 		
-		/* object ID types only, or idtype not yet initialised*/
+		/* object ID types only, or idtype not yet initialized*/
 		if ((flags & DTAR_FLAG_ID_OB_ONLY) || (dtar->idtype == 0))
 			dtar->idtype= ID_OB;
 	}
diff --git a/source/blender/blenkernel/intern/fmodifier.c b/source/blender/blenkernel/intern/fmodifier.c
index ae474f9d9c3..e6538e1500a 100644
--- a/source/blender/blenkernel/intern/fmodifier.c
+++ b/source/blender/blenkernel/intern/fmodifier.c
@@ -515,7 +515,7 @@ static FModifierTypeInfo FMI_ENVELOPE = {
  * NOTE: this needs to be at the start of the stack to be of use, as it needs to know the extents of the
  * keyframes/sample-data.
  *
- * Possible TODO - store length of cycle information that can be initialised from the extents of the
+ * Possible TODO - store length of cycle information that can be initialized from the extents of the
  * keyframes/sample-data, and adjusted as appropriate.
  */
 
diff --git a/source/blender/blenkernel/intern/group.c b/source/blender/blenkernel/intern/group.c
index ce840b63d5f..2b8db5d5940 100644
--- a/source/blender/blenkernel/intern/group.c
+++ b/source/blender/blenkernel/intern/group.c
@@ -344,9 +344,9 @@ void group_handle_recalc_and_update(Scene *scene, Object *UNUSED(parent), Group
 {
 	GroupObject *go;
 	
-#if 0 /* warning, isnt clearing the recalc flag on the object which causes it to run all the time,
+#if 0 /* warning, isn't clearing the recalc flag on the object which causes it to run all the time,
 	   * not just on frame change.
-	   * This isnt working because the animation data is only re-evalyated on frame change so commenting for now
+	   * This isn't working because the animation data is only re-evalyated on frame change so commenting for now
 	   * but when its enabled at some point it will need to be changed so as not to update so much - campbell */
 
 	/* if animated group... */
diff --git a/source/blender/blenkernel/intern/icons.c b/source/blender/blenkernel/intern/icons.c
index 72038955c55..f06ac5b7c10 100644
--- a/source/blender/blenkernel/intern/icons.c
+++ b/source/blender/blenkernel/intern/icons.c
@@ -91,7 +91,7 @@ static int get_next_free_id(void)
 	while (BLI_ghash_lookup(gIcons, SET_INT_IN_POINTER(startId)) && startId>=gFirstIconId) 
 		startId++;
 
-	/* if we found a suitable one that isnt used yet, return it */
+	/* if we found a suitable one that isn't used yet, return it */
 	if (startId>=gFirstIconId)
 		return startId;
 
diff --git a/source/blender/blenkernel/intern/idprop.c b/source/blender/blenkernel/intern/idprop.c
index b06cc8414a6..ee79c2fed35 100644
--- a/source/blender/blenkernel/intern/idprop.c
+++ b/source/blender/blenkernel/intern/idprop.c
@@ -74,7 +74,7 @@ IDProperty *IDP_NewIDPArray(const char *name)
 
 IDProperty *IDP_CopyIDPArray(IDProperty *array)
 {
-	/* dont use MEM_dupallocN because this may be part of an array */
+	/* don't use MEM_dupallocN because this may be part of an array */
 	IDProperty *narray = MEM_mallocN(sizeof(IDProperty), "IDP_CopyIDPArray"), *tmp;
 	int i;
 
@@ -608,9 +608,9 @@ IDProperty *IDP_GetProperties(ID *id, int create_if_needed)
 		if (create_if_needed) {
 			id->properties = MEM_callocN(sizeof(IDProperty), "IDProperty");
 			id->properties->type = IDP_GROUP;
-			/* dont overwrite the data's name and type
+			/* don't overwrite the data's name and type
 			 * some functions might need this if they
-			 * dont have a real ID, should be named elsewhere - Campbell */
+			 * don't have a real ID, should be named elsewhere - Campbell */
 			/* strcpy(id->name, "top_level_group");*/
 		}
 		return id->properties;
@@ -671,7 +671,7 @@ int IDP_EqualsProperties(IDProperty *prop1, IDProperty *prop2)
 	return 1;
 }
 
-/* 'val' is never NULL, dont check */
+/* 'val' is never NULL, don't check */
 IDProperty *IDP_New(const int type, const IDPropertyTemplate *val, const char *name)
 {
 	IDProperty *prop=NULL;
diff --git a/source/blender/blenkernel/intern/image.c b/source/blender/blenkernel/intern/image.c
index 3ac95b83e74..4300995b68c 100644
--- a/source/blender/blenkernel/intern/image.c
+++ b/source/blender/blenkernel/intern/image.c
@@ -601,7 +601,7 @@ Image *BKE_add_image_size(unsigned int width, unsigned int height, const char *n
 	if (ima) {
 		ImBuf *ibuf;
 		
-		/* BLI_strncpy(ima->name, name, FILE_MAX); */ /* dont do this, this writes in ain invalid filepath! */
+		/* BLI_strncpy(ima->name, name, FILE_MAX); */ /* don't do this, this writes in ain invalid filepath! */
 		ima->gen_x= width;
 		ima->gen_y= height;
 		ima->gen_type= uvtestgrid;
@@ -1832,7 +1832,7 @@ void BKE_image_signal(Image *ima, ImageUser *iuser, int signal)
 		break;
 	}
 	
-	/* dont use notifiers because they are not 100% sure to succeeded
+	/* don't use notifiers because they are not 100% sure to succeeded
 	 * this also makes sure all scenes are accounted for. */
 	{
 		Scene *scene;
diff --git a/source/blender/blenkernel/intern/ipo.c b/source/blender/blenkernel/intern/ipo.c
index 84939925b00..57a2dc41f74 100644
--- a/source/blender/blenkernel/intern/ipo.c
+++ b/source/blender/blenkernel/intern/ipo.c
@@ -1119,7 +1119,7 @@ static void fcurve_add_to_list (ListBase *groups, ListBase *list, FCurve *fcu, c
 		}
 		
 		/* add F-Curve to group */
-		/* WARNING: this func should only need to look at the stuff we initialised, if not, things may crash */
+		/* WARNING: this func should only need to look at the stuff we initialized, if not, things may crash */
 		action_groups_add_channel(&tmp_act, agrp, fcu);
 		
 		if (agrp->flag & AGRP_MUTED) /* flush down */
diff --git a/source/blender/blenkernel/intern/library.c b/source/blender/blenkernel/intern/library.c
index ee0c113d502..158319a802f 100644
--- a/source/blender/blenkernel/intern/library.c
+++ b/source/blender/blenkernel/intern/library.c
@@ -1195,7 +1195,7 @@ static int check_for_dupid(ListBase *lb, ID *id, char *name)
 		/* If the original name has no numeric suffix, 
 		 * rather than just chopping and adding numbers, 
 		 * shave off the end chars until we have a unique name.
-		 * Check the null terminators match as well so we dont get Cube.000 -> Cube.00 */
+		 * Check the null terminators match as well so we don't get Cube.000 -> Cube.00 */
 		if (nr==0 && name[left_len]== '\0') {
 			int len = left_len-1;
 			idtest= is_dupid(lb, id, name);
@@ -1211,7 +1211,7 @@ static int check_for_dupid(ListBase *lb, ID *id, char *name)
 		if(nr > 999 && left_len > (MAX_ID_NAME - 8)) {
 			/* this would overflow name buffer */
 			left[MAX_ID_NAME - 8] = 0;
-			/* left_len = MAX_ID_NAME - 8; */ /* for now this isnt used again */
+			/* left_len = MAX_ID_NAME - 8; */ /* for now this isn't used again */
 			memcpy(name, left, sizeof(char) * (MAX_ID_NAME - 7));
 			continue;
 		}
@@ -1257,7 +1257,7 @@ int new_id(ListBase *lb, ID *id, const char *tname)
 	}
 	else {
 		/* disallow non utf8 chars,
-		 * the interface checks for this but new ID's based on file names dont */
+		 * the interface checks for this but new ID's based on file names don't */
 		BLI_utf8_invalid_strip(name, strlen(name));
 	}
 
@@ -1402,7 +1402,7 @@ void BKE_library_make_local(Main *bmain, Library *lib, int untagged_only)
 			idn= id->next;		/* id is possibly being inserted again */
 			
 			/* The check on the second line (LIB_PRE_EXISTING) is done so its
-			 * possible to tag data you dont want to be made local, used for
+			 * possible to tag data you don't want to be made local, used for
 			 * appending data, so any libdata already linked wont become local
 			 * (very nasty to discover all your links are lost after appending)  
 			 * */
diff --git a/source/blender/blenkernel/intern/material.c b/source/blender/blenkernel/intern/material.c
index 898f881857a..6f47ed427d3 100644
--- a/source/blender/blenkernel/intern/material.c
+++ b/source/blender/blenkernel/intern/material.c
@@ -533,7 +533,7 @@ static void data_delete_material_index_id(ID *id, short index)
 		curve_delete_material_index((Curve *)id, index);
 		break;
 	case ID_MB:
-		/* meta-elems dont have materials atm */
+		/* meta-elems don't have materials atm */
 		break;
 	}
 }
diff --git a/source/blender/blenkernel/intern/mesh.c b/source/blender/blenkernel/intern/mesh.c
index d285f909f85..3fc22b92c22 100644
--- a/source/blender/blenkernel/intern/mesh.c
+++ b/source/blender/blenkernel/intern/mesh.c
@@ -332,7 +332,7 @@ static void mesh_ensure_tessellation_customdata(Mesh *me)
  * mloopcol and mcol) have the same relative active/render/clone/mask indices.
  *
  * note that for undo mesh data we want to skip 'ensure_tess_cd' call since
- * we dont want to store memory for tessface when its only used for older
+ * we don't want to store memory for tessface when its only used for older
  * versions of the mesh. - campbell*/
 static void mesh_update_linked_customdata(Mesh *me, const short do_ensure_tess_cd)
 {
@@ -2056,7 +2056,7 @@ void convert_mfaces_to_mpolys(Mesh *mesh)
 		bm_corners_to_loops(mesh, i, mp->loopstart, numTex, numCol);
 	}
 
-	/* note, we dont convert FGons at all, these are not even real ngons,
+	/* note, we don't convert FGons at all, these are not even real ngons,
 	 * they have their own UV's, colors etc - its more an editing feature. */
 
 	mesh_update_customdata_pointers(mesh, TRUE);
@@ -2505,12 +2505,12 @@ int mesh_recalcTessellation(CustomData *fdata,
 	CustomData_add_layer(fdata, CD_MFACE, CD_ASSIGN, mface, totface);
 
 	/* CD_POLYINDEX will contain an array of indices from tessfaces to the polygons
-	 * they are directly tesselated from */
+	 * they are directly tessellated from */
 	CustomData_add_layer(fdata, CD_POLYINDEX, CD_ASSIGN, mface_to_poly_map, totface);
 	if (mface_orig_index) {
-		/* If polys had a CD_ORIGINDEX layer, then the tesselated faces will get this
+		/* If polys had a CD_ORIGINDEX layer, then the tessellated faces will get this
 		 * layer as well, pointing to polys from the original mesh (not the polys
-		 * that just got tesselated) */
+		 * that just got tessellated) */
 		CustomData_add_layer(fdata, CD_ORIGINDEX, CD_ASSIGN, mface_orig_index, totface);
 	}
 
@@ -3106,7 +3106,7 @@ void BKE_mesh_tessface_calc(Mesh *mesh)
 	mesh->totface = mesh_recalcTessellation(&mesh->fdata, &mesh->ldata, &mesh->pdata,
 	                                       mesh->mvert,
 	                                       mesh->totface, mesh->totloop, mesh->totpoly,
-	                                       /* calc normals right after, dont copy from polys here */
+	                                       /* calc normals right after, don't copy from polys here */
 	                                       FALSE);
 
 	mesh_update_customdata_pointers(mesh, TRUE);
diff --git a/source/blender/blenkernel/intern/modifier.c b/source/blender/blenkernel/intern/modifier.c
index 2421971c53e..138379b1bb9 100644
--- a/source/blender/blenkernel/intern/modifier.c
+++ b/source/blender/blenkernel/intern/modifier.c
@@ -590,7 +590,7 @@ int modifiers_indexInObject(Object *ob, ModifierData *md_seek)
 	ModifierData *md;
 	
 	for (md=ob->modifiers.first; (md && md_seek!=md); md=md->next, i++);
-	if (!md) return -1; /* modifier isnt in the object */
+	if (!md) return -1; /* modifier isn't in the object */
 	return i;
 }
 
@@ -634,7 +634,7 @@ void test_object_modifiers(Object *ob)
  *
  * - if the ID is from a library, return library path
  * - else if the file has been saved return the blend file path.
- * - else if the file isn't saved and the ID isnt from a library, return the temp dir.
+ * - else if the file isn't saved and the ID isn't from a library, return the temp dir.
  */
 const char *modifier_path_relbase(Object *ob)
 {
diff --git a/source/blender/blenkernel/intern/node.c b/source/blender/blenkernel/intern/node.c
index f3320a0b31d..721874c83c2 100644
--- a/source/blender/blenkernel/intern/node.c
+++ b/source/blender/blenkernel/intern/node.c
@@ -660,7 +660,7 @@ bNodeTree *ntreeAddTree(const char *name, int type, int nodetype)
 /* Warning: this function gets called during some rather unexpected times
  *	- this gets called when executing compositing updates (for threaded previews)
  *	- when the nodetree datablock needs to be copied (i.e. when users get copied)
- *	- for scene duplication use ntreeSwapID() after so we dont have stale pointers.
+ *	- for scene duplication use ntreeSwapID() after so we don't have stale pointers.
  */
 bNodeTree *ntreeCopyTree(bNodeTree *ntree)
 {
@@ -1146,7 +1146,7 @@ bNodeTree *ntreeLocalize(bNodeTree *ntree)
 	bAction *action_backup= NULL, *tmpact_backup= NULL;
 	
 	/* Workaround for copying an action on each render!
-	 * set action to NULL so animdata actions dont get copied */
+	 * set action to NULL so animdata actions don't get copied */
 	AnimData *adt= BKE_animdata_from_id(&ntree->id);
 
 	if(adt) {
diff --git a/source/blender/blenkernel/intern/object.c b/source/blender/blenkernel/intern/object.c
index 0557fcf5fcd..3d6a8d8f5ae 100644
--- a/source/blender/blenkernel/intern/object.c
+++ b/source/blender/blenkernel/intern/object.c
@@ -1393,7 +1393,7 @@ void object_make_proxy(Object *ob, Object *target, Object *gob)
 		ob->mat = MEM_dupallocN(target->mat);
 		ob->matbits = MEM_dupallocN(target->matbits);
 		for (i=0; i<target->totcol; i++) {
-			/* dont need to run test_object_materials since we know this object is new and not used elsewhere */
+			/* don't need to run test_object_materials since we know this object is new and not used elsewhere */
 			id_us_plus((ID *)ob->mat[i]); 
 		}
 	}
diff --git a/source/blender/blenkernel/intern/ocean.c b/source/blender/blenkernel/intern/ocean.c
index 87929d6a185..3962e6d47fa 100644
--- a/source/blender/blenkernel/intern/ocean.c
+++ b/source/blender/blenkernel/intern/ocean.c
@@ -963,7 +963,7 @@ void BKE_free_ocean_data(struct Ocean *oc)
 	if (oc->_fft_in)
 		MEM_freeN(oc->_fft_in);
 
-	/* check that ocean data has been initialised */
+	/* check that ocean data has been initialized */
 	if (oc->_htilda) {
 		MEM_freeN(oc->_htilda);
 		MEM_freeN(oc->_k);
diff --git a/source/blender/blenkernel/intern/particle.c b/source/blender/blenkernel/intern/particle.c
index 590c307f549..21dfe437ba0 100644
--- a/source/blender/blenkernel/intern/particle.c
+++ b/source/blender/blenkernel/intern/particle.c
@@ -1629,7 +1629,7 @@ int psys_particle_dm_face_lookup(Object *ob, DerivedMesh *dm, int index, const f
 	totface = dm->getNumTessFaces(dm);
 	
 	if(osface==NULL || origindex==NULL) {
-		/* Assume we dont need osface data */
+		/* Assume we don't need osface data */
 		if (index <totface) {
 			//printf("\tNO CD_ORIGSPACE, assuming not needed\n");
 			return index;
@@ -4069,7 +4069,7 @@ void psys_get_particle_on_path(ParticleSimulationData *sim, int p, ParticleKey *
 			pind.cache = cached ? psys->pointcache : NULL;
 			pind.epoint = NULL;
 			pind.bspline = (psys->part->flag & PART_HAIR_BSPLINE);
-			/* pind.dm disabled in editmode means we dont get effectors taken into
+			/* pind.dm disabled in editmode means we don't get effectors taken into
 			 * account when subdividing for instance */
 			pind.dm = psys_in_edit_mode(sim->scene, psys) ? NULL : psys->hair_out_dm;
 			init_particle_interpolation(sim->ob, psys, pa, &pind);
diff --git a/source/blender/blenkernel/intern/particle_system.c b/source/blender/blenkernel/intern/particle_system.c
index bbe32c651a2..8b34bafc417 100644
--- a/source/blender/blenkernel/intern/particle_system.c
+++ b/source/blender/blenkernel/intern/particle_system.c
@@ -1096,7 +1096,7 @@ static int distribute_threads_init_data(ParticleThread *threads, Scene *scene, D
 		
 		dm= CDDM_from_mesh((Mesh*)ob->data, ob);
 
-		/* BMESH ONLY, for verts we dont care about tessfaces */
+		/* BMESH ONLY, for verts we don't care about tessfaces */
 		if (from != PART_FROM_VERT) {
 			DM_ensure_tessface(dm);
 		}
@@ -1515,7 +1515,7 @@ void initialize_particle(ParticleSimulationData *sim, ParticleData *pa, int p)
 	pa->hair_index = 0;
 	/* we can't reset to -1 anymore since we've figured out correct index in distribute_particles */
 	/* usage other than straight after distribute has to handle this index by itself - jahka*/
-	//pa->num_dmcache = DMCACHE_NOTFOUND; /* assume we dont have a derived mesh face */
+	//pa->num_dmcache = DMCACHE_NOTFOUND; /* assume we don't have a derived mesh face */
 }
 static void initialize_all_particles(ParticleSimulationData *sim)
 {
diff --git a/source/blender/blenkernel/intern/pointcache.c b/source/blender/blenkernel/intern/pointcache.c
index fab3f096d3e..b3c242178f1 100644
--- a/source/blender/blenkernel/intern/pointcache.c
+++ b/source/blender/blenkernel/intern/pointcache.c
@@ -1050,7 +1050,7 @@ static int ptcache_path(PTCacheID *pid, char *filename)
 		return BLI_add_slash(filename); /* new strlen() */
 	}
 	else if (G.relbase_valid || lib) {
-		char file[MAX_PTCACHE_PATH]; /* we dont want the dir, only the file */
+		char file[MAX_PTCACHE_PATH]; /* we don't want the dir, only the file */
 
 		BLI_split_file_part(blendfilename, file, sizeof(file));
 		i = strlen(file);
@@ -2546,7 +2546,7 @@ void BKE_ptcache_remove(void)
 				BLI_join_dirfile(path_full, sizeof(path_full), path, de->d_name);
 				BLI_delete(path_full, 0, 0);
 			} else {
-				rmdir = 0; /* unknown file, dont remove the dir */
+				rmdir = 0; /* unknown file, don't remove the dir */
 			}
 		}
 
diff --git a/source/blender/blenkernel/intern/scene.c b/source/blender/blenkernel/intern/scene.c
index 054520a25f4..5c59f4c741c 100644
--- a/source/blender/blenkernel/intern/scene.c
+++ b/source/blender/blenkernel/intern/scene.c
@@ -1064,7 +1064,7 @@ void scene_update_for_newframe(Main *bmain, Scene *sce, unsigned int lay)
 	DAG_ids_flush_tagged(bmain);
 
 	/* Following 2 functions are recursive
-	 * so dont call within 'scene_update_tagged_recursive' */
+	 * so don't call within 'scene_update_tagged_recursive' */
 	DAG_scene_update_flags(bmain, sce, lay, TRUE);   // only stuff that moves or needs display still
 
 	/* All 'standard' (i.e. without any dependencies) animation is handled here,
diff --git a/source/blender/blenkernel/intern/sequencer.c b/source/blender/blenkernel/intern/sequencer.c
index a42261d13c7..b23b5fcb22f 100644
--- a/source/blender/blenkernel/intern/sequencer.c
+++ b/source/blender/blenkernel/intern/sequencer.c
@@ -658,14 +658,14 @@ void reload_sequence_new_file(Scene *scene, Sequence * seq, int lock_range)
 {
 	char str[FILE_MAX];
 	int prev_startdisp=0, prev_enddisp=0;
-	/* note: dont rename the strip, will break animation curves */
+	/* note: don't rename the strip, will break animation curves */
 
 	if (ELEM5(seq->type, SEQ_MOVIE, SEQ_IMAGE, SEQ_SOUND, SEQ_SCENE, SEQ_META)==0) {
 		return;
 	}
 
 	if(lock_range) {
-		/* keep so we dont have to move the actual start and end points (only the data) */
+		/* keep so we don't have to move the actual start and end points (only the data) */
 		calc_sequence_disp(scene, seq);
 		prev_startdisp= seq->startdisp;
 		prev_enddisp= seq->enddisp;
@@ -1998,7 +1998,7 @@ static ImBuf * seq_render_scene_strip_impl(
 	int have_seq= FALSE;
 	Scene *scene;
 
-	/* dont refer to seq->scene above this point!, it can be NULL */
+	/* don't refer to seq->scene above this point!, it can be NULL */
 	if(seq->scene == NULL) {
 		return NULL;
 	}
@@ -3008,7 +3008,7 @@ int seqbase_isolated_sel_check(ListBase *seqbase)
 	return TRUE;
 }
 
-/* use to impose limits when dragging/extending - so impossible situations dont happen
+/* use to impose limits when dragging/extending - so impossible situations don't happen
  * Cant use the SEQ_LEFTSEL and SEQ_LEFTSEL directly because the strip may be in a metastrip */
 void seq_tx_handle_xlimits(Sequence *seq, int leftflag, int rightflag)
 {
@@ -3163,7 +3163,7 @@ int shuffle_seq(ListBase * seqbasep, Sequence *test, Scene *evil_scene)
 			break;
 		}
 		test->machine++;
-		calc_sequence(evil_scene, test); // XXX - I dont think this is needed since were only moving vertically, Campbell.
+		calc_sequence(evil_scene, test); // XXX - I don't think this is needed since were only moving vertically, Campbell.
 	}
 
 	
@@ -3413,7 +3413,7 @@ int seq_swap(Sequence *seq_a, Sequence *seq_b, const char **error_str)
 
 	SWAP(Sequence, *seq_a, *seq_b);
 
-	/* swap back names so animation fcurves dont get swapped */
+	/* swap back names so animation fcurves don't get swapped */
 	BLI_strncpy(name, seq_a->name+2, sizeof(name));
 	BLI_strncpy(seq_a->name+2, seq_b->name+2, sizeof(seq_b->name)-2);
 	BLI_strncpy(seq_b->name+2, name, sizeof(seq_b->name)-2);
diff --git a/source/blender/blenkernel/intern/shrinkwrap.c b/source/blender/blenkernel/intern/shrinkwrap.c
index dab945c44f3..664a1d0d7f9 100644
--- a/source/blender/blenkernel/intern/shrinkwrap.c
+++ b/source/blender/blenkernel/intern/shrinkwrap.c
@@ -360,7 +360,7 @@ static void shrinkwrap_calc_normal_projection(ShrinkwrapCalcData *calc)
 
 
 			hit.index = -1;
-			hit.dist = 10000.0f; //TODO: we should use FLT_MAX here, but sweepsphere code isnt prepared for that
+			hit.dist = 10000.0f; //TODO: we should use FLT_MAX here, but sweepsphere code isn't prepared for that
 
 			//Project over positive direction of axis
 			if(use_normal & MOD_SHRINKWRAP_PROJECT_ALLOW_POS_DIR)
diff --git a/source/blender/blenkernel/intern/smoke.c b/source/blender/blenkernel/intern/smoke.c
index bffd4703ce4..5b991b7fad8 100644
--- a/source/blender/blenkernel/intern/smoke.c
+++ b/source/blender/blenkernel/intern/smoke.c
@@ -817,7 +817,7 @@ void smokeModifier_copy(struct SmokeModifierData *smd, struct SmokeModifierData
 		tsmd->flow->vel_multi = smd->flow->vel_multi;
 	} else if (tsmd->coll) {
 		;
-		/* leave it as initialised, collision settings is mostly caches */
+		/* leave it as initialized, collision settings is mostly caches */
 	}
 }
 
diff --git a/source/blender/blenkernel/intern/softbody.c b/source/blender/blenkernel/intern/softbody.c
index 33da4443b6f..25cfd0da1f3 100644
--- a/source/blender/blenkernel/intern/softbody.c
+++ b/source/blender/blenkernel/intern/softbody.c
@@ -1055,7 +1055,7 @@ static int sb_detect_aabb_collisionCached(	float UNUSED(force[3]), unsigned int
 						(aabbmin[0] > ccdm->bbmax[0]) ||
 						(aabbmin[1] > ccdm->bbmax[1]) ||
 						(aabbmin[2] > ccdm->bbmax[2]) ) {
-						/* boxes dont intersect */
+						/* boxes don't intersect */
 						BLI_ghashIterator_step(ihash);
 						continue;
 					}
@@ -1126,7 +1126,7 @@ static int sb_detect_face_pointCached(float face_v1[3],float face_v2[3],float fa
 						(aabbmin[0] > ccdm->bbmax[0]) ||
 						(aabbmin[1] > ccdm->bbmax[1]) ||
 						(aabbmin[2] > ccdm->bbmax[2]) ) {
-						/* boxes dont intersect */
+						/* boxes don't intersect */
 						BLI_ghashIterator_step(ihash);
 						continue;
 					}
@@ -1221,7 +1221,7 @@ static int sb_detect_face_collisionCached(float face_v1[3],float face_v2[3],floa
 						(aabbmin[0] > ccdm->bbmax[0]) ||
 						(aabbmin[1] > ccdm->bbmax[1]) ||
 						(aabbmin[2] > ccdm->bbmax[2]) ) {
-						/* boxes dont intersect */
+						/* boxes don't intersect */
 						BLI_ghashIterator_step(ihash);
 						continue;
 					}
@@ -1449,7 +1449,7 @@ static int sb_detect_edge_collisionCached(float edge_v1[3],float edge_v2[3],floa
 						(aabbmin[0] > ccdm->bbmax[0]) ||
 						(aabbmin[1] > ccdm->bbmax[1]) ||
 						(aabbmin[2] > ccdm->bbmax[2]) ) {
-						/* boxes dont intersect */
+						/* boxes don't intersect */
 						BLI_ghashIterator_step(ihash);
 						continue;
 					}
@@ -2217,7 +2217,7 @@ static int _softbody_calc_forces_slice_in_a_thread(Scene *scene, Object *ob, flo
 				compare = (obp->colball + bp->colball);
 				sub_v3_v3v3(def, bp->pos, obp->pos);
 				/* rather check the AABBoxes before ever calulating the real distance */
-				/* mathematically it is completly nuts, but performace is pretty much (3) times faster */
+				/* mathematically it is completly nuts, but performance is pretty much (3) times faster */
 				if ((ABS(def[0]) > compare) || (ABS(def[1]) > compare) || (ABS(def[2]) > compare)) continue;
 				distance = normalize_v3(def);
 				if (distance < compare ) {
@@ -2588,7 +2588,7 @@ static void softbody_calc_forces(Scene *scene, Object *ob, float forcetime, floa
 					sub_v3_v3v3(def, bp->pos, obp->pos);
 
 					/* rather check the AABBoxes before ever calulating the real distance */
-					/* mathematically it is completly nuts, but performace is pretty much (3) times faster */
+					/* mathematically it is completly nuts, but performance is pretty much (3) times faster */
 					if ((ABS(def[0]) > compare) || (ABS(def[1]) > compare) || (ABS(def[2]) > compare)) continue;
 
 					distance = normalize_v3(def);
diff --git a/source/blender/blenkernel/intern/sound.c b/source/blender/blenkernel/intern/sound.c
index a41e765695e..67e392fa296 100644
--- a/source/blender/blenkernel/intern/sound.c
+++ b/source/blender/blenkernel/intern/sound.c
@@ -351,7 +351,7 @@ void sound_load(struct Main *bmain, struct bSound* sound)
 			/* load sound */
 			PackedFile* pf = sound->packedfile;
 
-			/* dont modify soundact->sound->name, only change a copy */
+			/* don't modify soundact->sound->name, only change a copy */
 			BLI_strncpy(fullpath, sound->name, sizeof(fullpath));
 			BLI_path_abs(fullpath, ID_BLEND_PATH(bmain, &sound->id));
 
diff --git a/source/blender/blenkernel/intern/subsurf_ccg.c b/source/blender/blenkernel/intern/subsurf_ccg.c
index a0d603f93ff..b968afa4d22 100644
--- a/source/blender/blenkernel/intern/subsurf_ccg.c
+++ b/source/blender/blenkernel/intern/subsurf_ccg.c
@@ -1038,7 +1038,7 @@ static void ccgDM_copyFinalVertArray(DerivedMesh *dm, MVert *mvert)
 			vd= ccgSubSurf_getEdgeData(ss, e, x);
 			copy_v3_v3(mvert[i].co, vd->co);
 			/* This gives errors with -debug-fpe
-			 * the normals dont seem to be unit length.
+			 * the normals don't seem to be unit length.
 			 * this is most likely caused by edges with no
 			 * faces which are now zerod out, see comment in:
 			 * ccgSubSurf__calcVertNormals(), - campbell */
@@ -3064,7 +3064,7 @@ static CCGDerivedMesh *getCCGDerivedMesh(CCGSubSurf *ss,
 
 #if 0
 	/* this is not in trunk, can gives problems because colors initialize
-	 * as black, just dont do it!, it works fine - campbell */
+	 * as black, just don't do it!, it works fine - campbell */
 	if (!CustomData_has_layer(&ccgdm->dm.faceData, CD_MCOL))
 		DM_add_tessface_layer(&ccgdm->dm, CD_MCOL, CD_CALLOC, NULL);
 	mcol = DM_get_tessface_data_layer(&ccgdm->dm, CD_MCOL);
@@ -3190,7 +3190,7 @@ static CCGDerivedMesh *getCCGDerivedMesh(CCGSubSurf *ss,
 					/*copy over poly data, e.g. mtexpoly*/
 					CustomData_copy_data(&dm->polyData, &ccgdm->dm.polyData, origIndex, faceNum, 1);
 
-					/*generate tesselated face data used for drawing*/
+					/*generate tessellated face data used for drawing*/
 					ccg_loops_to_corners(&ccgdm->dm.faceData, &ccgdm->dm.loopData,
 					                     &ccgdm->dm.polyData, loopindex2-4, faceNum, faceNum,
 					                     numTex, numCol, hasWCol, hasOrigSpace);