diff --git a/intern/bsp/intern/CSG_BooleanOps.cpp b/intern/bsp/intern/CSG_BooleanOps.cpp
index 4f71e7992a1..f74dfc3c253 100644
--- a/intern/bsp/intern/CSG_BooleanOps.cpp
+++ b/intern/bsp/intern/CSG_BooleanOps.cpp
@@ -88,16 +88,16 @@ CSG_PerformBooleanOperation(
 
 	BoolOpType boolType;
 	
-	switch( op_type ) {
-	case e_csg_union:
-		boolType = BOP_UNION;
-		break;
-	case e_csg_difference:
-		boolType = BOP_DIFFERENCE;
-		break;
-	default:
-		boolType = BOP_INTERSECTION;
-		break;
+	switch (op_type) {
+		case e_csg_union:
+			boolType = BOP_UNION;
+			break;
+		case e_csg_difference:
+			boolType = BOP_DIFFERENCE;
+			break;
+		default:
+			boolType = BOP_INTERSECTION;
+			break;
 	}
 
 	BoolOpState boolOpResult;
diff --git a/intern/ghost/intern/GHOST_SystemCocoa.mm b/intern/ghost/intern/GHOST_SystemCocoa.mm
index e4245aaf095..6cf4ada6311 100644
--- a/intern/ghost/intern/GHOST_SystemCocoa.mm
+++ b/intern/ghost/intern/GHOST_SystemCocoa.mm
@@ -1028,8 +1028,7 @@ GHOST_TSuccess GHOST_SystemCocoa::handleWindowEvent(GHOST_TEventType eventType,
 	if (!validWindow(window)) {
 		return GHOST_kFailure;
 	}
-		switch(eventType) 
-		{
+		switch (eventType) {
 			case GHOST_kEventWindowClose:
 				pushEvent( new GHOST_Event(getMilliSeconds(), GHOST_kEventWindowClose, window) );
 				break;
@@ -1086,8 +1085,7 @@ GHOST_TSuccess GHOST_SystemCocoa::handleDraggingEvent(GHOST_TEventType eventType
 	if (!validWindow(window)) {
 		return GHOST_kFailure;
 	}
-	switch(eventType) 
-	{
+	switch (eventType) {
 		case GHOST_kEventDraggingEntered:
 		case GHOST_kEventDraggingUpdated:
 		case GHOST_kEventDraggingExited:
diff --git a/source/blender/blenlib/intern/fileops.c b/source/blender/blenlib/intern/fileops.c
index 0f42fca9f12..24b3c36a329 100644
--- a/source/blender/blenlib/intern/fileops.c
+++ b/source/blender/blenlib/intern/fileops.c
@@ -111,7 +111,7 @@ int BLI_file_gzip(const char *from, const char *to)
 	return rval;
 }
 
-/* gzip the file in from_file and write it to memery to_mem, at most size bytes.
+/* gzip the file in from_file and write it to memory to_mem, at most size bytes.
  * return the unziped size
  */
 char *BLI_file_ungzip_to_mem(const char *from_file, int *size_r)
@@ -283,7 +283,7 @@ int BLI_move(const char *file, const char *to)
 {
 	int err;
 
-	/* windows doesn't support moveing to a directory
+	/* windows doesn't support moving to a directory
 	 * it has to be 'mv filename filename' and not
 	 * 'mv filename destdir' */
 
diff --git a/source/blender/blenlib/intern/math_rotation.c b/source/blender/blenlib/intern/math_rotation.c
index e6399ed356e..c0ea817ae4a 100644
--- a/source/blender/blenlib/intern/math_rotation.c
+++ b/source/blender/blenlib/intern/math_rotation.c
@@ -1662,7 +1662,7 @@ void quat_apply_track(float quat[4], short axis, short upflag)
 		axis = axis - 3;
 
 	/* there are 2 possible up-axis for each axis used, the 'quat_track' applies so the first
-	 * up axis is used X->Y, Y->X, Z->X, if this first up axis isn used then rotate 90d
+	 * up axis is used X->Y, Y->X, Z->X, if this first up axis isn't used then rotate 90d
 	 * the strange bit shift below just find the low axis {X:Y, Y:X, Z:X} */
 	if (upflag != (2 - axis) >> 1) {
 		float q[4] = {M_SQRT1_2, 0.0, 0.0, 0.0}; /* assign 90d rotation axis */
diff --git a/source/blender/blenlib/intern/math_vector_inline.c b/source/blender/blenlib/intern/math_vector_inline.c
index c4def539c10..48e7de43a86 100644
--- a/source/blender/blenlib/intern/math_vector_inline.c
+++ b/source/blender/blenlib/intern/math_vector_inline.c
@@ -663,7 +663,7 @@ MINLINE float normalize_v3_v3(float r[3], const float a[3])
 	float d = dot_v3v3(a, a);
 
 	/* a larger value causes normalize errors in a
-	 * scaled down models with camera xtreme close */
+	 * scaled down models with camera extreme close */
 	if (d > 1.0e-35f) {
 		d = sqrtf(d);
 		mul_v3_v3fl(r, a, 1.0f / d);
@@ -681,7 +681,7 @@ MINLINE double normalize_v3_d(double n[3])
 	double d = n[0] * n[0] + n[1] * n[1] + n[2] * n[2];
 
 	/* a larger value causes normalize errors in a
-	 * scaled down models with camera xtreme close */
+	 * scaled down models with camera extreme close */
 	if (d > 1.0e-35) {
 		double mul;
 
diff --git a/source/blender/bmesh/bmesh_class.h b/source/blender/bmesh/bmesh_class.h
index 4fa3a69356f..e851a642b32 100644
--- a/source/blender/bmesh/bmesh_class.h
+++ b/source/blender/bmesh/bmesh_class.h
@@ -45,7 +45,7 @@ struct Object;
  * pointers. this is a requirement of mempool's method of
  * iteration.
  *
- * hrm. it doesn't but stull works ok, remove the comment above? - campbell.
+ * hrm. it doesn't but still works ok, remove the comment above? - campbell.
  */
 
 // #pragma GCC diagnostic error "-Wpadded"
diff --git a/source/blender/bmesh/intern/bmesh_core.c b/source/blender/bmesh/intern/bmesh_core.c
index a2f2a9a0dba..643e73e02b4 100644
--- a/source/blender/bmesh/intern/bmesh_core.c
+++ b/source/blender/bmesh/intern/bmesh_core.c
@@ -2103,7 +2103,7 @@ bool bmesh_edge_separate(BMesh *bm, BMEdge *e, BMLoop *l_sep)
 }
 
 /**
- * \brief Unglue Region Make Vert (URMV)
+ * \brief Un-glue Region Make Vert (URMV)
  *
  * Disconnects a face from its vertex fan at loop \a sl
  *
diff --git a/source/blender/bmesh/intern/bmesh_iterators_inline.h b/source/blender/bmesh/intern/bmesh_iterators_inline.h
index d9784ac9b2a..eef6544be89 100644
--- a/source/blender/bmesh/intern/bmesh_iterators_inline.h
+++ b/source/blender/bmesh/intern/bmesh_iterators_inline.h
@@ -35,7 +35,7 @@
 /**
  * \brief Iterator Step
  *
- * Calls an iterators step fucntion to return the next element.
+ * Calls an iterators step function to return the next element.
  */
 BLI_INLINE void *BM_iter_step(BMIter *iter)
 {
diff --git a/source/blender/bmesh/intern/bmesh_queries.c b/source/blender/bmesh/intern/bmesh_queries.c
index 2284e183d97..44dc483d5a7 100644
--- a/source/blender/bmesh/intern/bmesh_queries.c
+++ b/source/blender/bmesh/intern/bmesh_queries.c
@@ -472,7 +472,7 @@ BMLoop *BM_vert_step_fan_loop(BMLoop *l, BMEdge **e_step)
  * The function takes a vertex at the center of a fan and returns the opposite edge in the fan.
  * All edges in the fan must be manifold, otherwise return NULL.
  *
- * \note This could (probably) be done more effieiently.
+ * \note This could (probably) be done more efficiently.
  */
 BMEdge *BM_vert_other_disk_edge(BMVert *v, BMEdge *e_first)
 {
diff --git a/source/blender/bmesh/operators/bmo_subdivide.c b/source/blender/bmesh/operators/bmo_subdivide.c
index c7c33aa2775..36ad8ef506b 100644
--- a/source/blender/bmesh/operators/bmo_subdivide.c
+++ b/source/blender/bmesh/operators/bmo_subdivide.c
@@ -165,7 +165,7 @@ static void alter_co(BMesh *bm, BMVert *v, BMEdge *UNUSED(origed), const SubDPar
 	}
 
 	/* apply the new difference to the rest of the shape keys,
-	 * note that this dosn't take rotations into account, we _could_ support
+	 * note that this doesn't take rotations into account, we _could_ support
 	 * this by getting the normals and coords for each shape key and
 	 * re-calculate the smooth value for each but this is quite involved.
 	 * for now its ok to simply apply the difference IMHO - campbell */
diff --git a/source/blender/bmesh/tools/bmesh_decimate_unsubdivide.c b/source/blender/bmesh/tools/bmesh_decimate_unsubdivide.c
index 9dc4b596568..7e9a5784552 100644
--- a/source/blender/bmesh/tools/bmesh_decimate_unsubdivide.c
+++ b/source/blender/bmesh/tools/bmesh_decimate_unsubdivide.c
@@ -189,7 +189,7 @@ void BM_mesh_decimate_unsubdivide_ex(BMesh *bm, const int iterations, const bool
 
 	int iter_step;
 
-	/* if tag_only is set, we assyme the caller knows what verts to tag
+	/* if tag_only is set, we assume the caller knows what verts to tag
 	 * needed for the operator */
 	if (tag_only == false) {
 		BM_ITER_MESH (v, &iter, bm, BM_VERTS_OF_MESH) {
diff --git a/source/blender/collada/collada_utils.cpp b/source/blender/collada/collada_utils.cpp
index 84bb33929c1..13403555bfb 100644
--- a/source/blender/collada/collada_utils.cpp
+++ b/source/blender/collada/collada_utils.cpp
@@ -329,15 +329,18 @@ void bc_match_scale(std::vector<Object *> *objects_done,
 
 	float bl_scale;
 	
-	switch(type) {
-		case USER_UNIT_NONE :	bl_scale = 1.0; // map 1 Blender unit to 1 Meter
-								break;
-		case USER_UNIT_METRIC : bl_scale = RNA_property_float_get(&unit_settings, scale_ptr);
-								break;
-		default :				bl_scale = RNA_property_float_get(&unit_settings, scale_ptr);
-								// it looks like the conversion to Imperial is done implicitly.
-								// So nothing to do here.
-								break;
+	switch (type) {
+		case USER_UNIT_NONE:
+			bl_scale = 1.0; // map 1 Blender unit to 1 Meter
+			break;
+		case USER_UNIT_METRIC:
+			bl_scale = RNA_property_float_get(&unit_settings, scale_ptr);
+			break;
+		default:
+			bl_scale = RNA_property_float_get(&unit_settings, scale_ptr);
+			// it looks like the conversion to Imperial is done implicitly.
+			// So nothing to do here.
+			break;
 	}
 	
 	float size_mat3[3][3];
diff --git a/source/blender/editors/io/io_collada.c b/source/blender/editors/io/io_collada.c
index 52a585dd314..2003aeaa848 100644
--- a/source/blender/editors/io/io_collada.c
+++ b/source/blender/editors/io/io_collada.c
@@ -367,8 +367,9 @@ void WM_OT_collada_import(wmOperatorType *ot)
 	                               WM_FILESEL_FILEPATH, FILE_DEFAULTDISPLAY);
 
 	RNA_def_boolean(ot->srna,
-					"import_units", 0, "Import Units",
-					"If disabled match import to Blender's current Unit settings. Otherwise use the settings from the Imported scene.");
+	                "import_units", 0, "Import Units",
+	                "If disabled match import to Blender's current Unit settings. "
+	                "Otherwise use the settings from the Imported scene");
 
 }
 #endif
diff --git a/source/blender/editors/render/render_view.c b/source/blender/editors/render/render_view.c
index c53a8f68713..8b2ac740e47 100644
--- a/source/blender/editors/render/render_view.c
+++ b/source/blender/editors/render/render_view.c
@@ -291,7 +291,8 @@ static int render_view_show_invoke(bContext *C, wmOperator *UNUSED(op), wmEvent
 		for (win = CTX_wm_manager(C)->windows.first; win; win = win->next) {
 			bScreen *sc = win->screen;
 			if ((sc->temp && ((ScrArea *)sc->areabase.first)->spacetype == SPACE_IMAGE) ||
-					(win == winshow && winshow != wincur)) {
+			    (win == winshow && winshow != wincur))
+			{
 				wm_window_raise(win);
 				return OPERATOR_FINISHED;
 			}
diff --git a/source/blender/editors/screen/screen_ops.c b/source/blender/editors/screen/screen_ops.c
index da2facc244a..11f1828ff4e 100644
--- a/source/blender/editors/screen/screen_ops.c
+++ b/source/blender/editors/screen/screen_ops.c
@@ -3597,7 +3597,7 @@ static void SCENE_OT_delete(wmOperatorType *ot)
 
 /* ***************** region alpha blending ***************** */
 
-/* implementation note: a disapplearing region needs at least 1 last draw with 100% backbuffer
+/* implementation note: a disappearing region needs at least 1 last draw with 100% backbuffer
  * texture over it- then triple buffer will clear it entirely.
  * This because flag RGN_HIDDEN is set in end - region doesnt draw at all then */
 
diff --git a/source/blender/editors/sculpt_paint/paint_image.c b/source/blender/editors/sculpt_paint/paint_image.c
index 74399857a97..a1b3941dd7a 100644
--- a/source/blender/editors/sculpt_paint/paint_image.c
+++ b/source/blender/editors/sculpt_paint/paint_image.c
@@ -904,7 +904,7 @@ static int project_paint_occlude_ptv_clip(const ProjPaintState *ps, const MFace
 
 /* Check if a screenspace location is occluded by any other faces
  * check, pixelScreenCo must be in screenspace, its Z-Depth only needs to be used for comparison
- * and dosn't need to be correct in relation to X and Y coords (this is the case in perspective view) */
+ * and doesn't need to be correct in relation to X and Y coords (this is the case in perspective view) */
 static int project_bucket_point_occluded(const ProjPaintState *ps, LinkNode *bucketFace, const int orig_face, float pixelScreenCo[4])
 {
 	MFace *mf;
diff --git a/source/blender/editors/space_buttons/buttons_header.c b/source/blender/editors/space_buttons/buttons_header.c
index 701048cd229..ae7026a634f 100644
--- a/source/blender/editors/space_buttons/buttons_header.c
+++ b/source/blender/editors/space_buttons/buttons_header.c
@@ -97,7 +97,7 @@ static void do_buttons_buttons(bContext *C, void *UNUSED(arg), int event)
 	sbuts->mainbuser = sbuts->mainb;
 }
 
-#define BUT_UNIT_X (UI_UNIT_X + 2*U.pixelsize)
+#define BUT_UNIT_X (UI_UNIT_X + 2 * U.pixelsize)
 
 void buttons_header_buttons(const bContext *C, ARegion *ar)
 {
@@ -105,7 +105,7 @@ void buttons_header_buttons(const bContext *C, ARegion *ar)
 	uiBlock *block;
 	uiBut *but;
 	int headery = ED_area_headersize();
-	int xco, yco = 0.5f*(headery - UI_UNIT_Y);
+	int xco, yco = 0.5f * (headery - UI_UNIT_Y);
 
 	buttons_context_compute(C, sbuts);
 	
diff --git a/source/blender/render/intern/source/multires_bake.c b/source/blender/render/intern/source/multires_bake.c
index 89f67335c39..ea42049989b 100644
--- a/source/blender/render/intern/source/multires_bake.c
+++ b/source/blender/render/intern/source/multires_bake.c
@@ -938,17 +938,18 @@ static void build_permutation_table(unsigned short permutation[], unsigned short
 		permutation[i] = temp_permutation[entry];
 
 		/* delete entry */
-		for(k = entry; k < nr_entries_left - 1; k++)
+		for (k = entry; k < nr_entries_left - 1; k++) {
 			temp_permutation[k] = temp_permutation[k + 1];
+		}
 	}
 
 	/* verify permutation table
 	 * every entry must appear exactly once
 	 */
 #if 0
-	for(i = 0; i < number_of_rays; i++) temp_permutation[i] = 0;
-	for(i = 0; i < number_of_rays; i++) ++temp_permutation[permutation[i]];
-	for(i = 0; i < number_of_rays; i++) BLI_assert(temp_permutation[i] == 1);
+	for (i = 0; i < number_of_rays; i++) temp_permutation[i] = 0;
+	for (i = 0; i < number_of_rays; i++) ++temp_permutation[permutation[i]];
+	for (i = 0; i < number_of_rays; i++) BLI_assert(temp_permutation[i] == 1);
 #endif
 }
 
diff --git a/source/blender/windowmanager/intern/wm_draw.c b/source/blender/windowmanager/intern/wm_draw.c
index 91be03986c1..6044e3fb771 100644
--- a/source/blender/windowmanager/intern/wm_draw.c
+++ b/source/blender/windowmanager/intern/wm_draw.c
@@ -800,7 +800,7 @@ void wm_draw_update(bContext *C)
 
 		if (state == GHOST_kWindowStateMinimized) {
 			/* do not update minimized windows, it gives issues on intel drivers (see [#33223])
-			 * anyway, it seems logical to skip update for invisile windows
+			 * anyway, it seems logical to skip update for invisible windows
 			 */
 			continue;
 		}
diff --git a/source/blender/windowmanager/intern/wm_event_system.c b/source/blender/windowmanager/intern/wm_event_system.c
index 9e3722777ba..0005c3a2230 100644
--- a/source/blender/windowmanager/intern/wm_event_system.c
+++ b/source/blender/windowmanager/intern/wm_event_system.c
@@ -3042,7 +3042,7 @@ void wm_event_add_ghostevent(wmWindowManager *wm, wmWindow *win, int type, int U
 				event.keymodifier = 0;
 						
 			/* this case happened with an external numpad, it's not really clear
-			 * why, but it's also impossible to map a key modifier to an unknwon
+			 * why, but it's also impossible to map a key modifier to an unknown
 			 * key, so it shouldn't harm */
 			if (event.keymodifier == UNKNOWNKEY)
 				event.keymodifier = 0;
diff --git a/source/blender/windowmanager/intern/wm_operators.c b/source/blender/windowmanager/intern/wm_operators.c
index e22694a6560..1172f66fb1b 100644
--- a/source/blender/windowmanager/intern/wm_operators.c
+++ b/source/blender/windowmanager/intern/wm_operators.c
@@ -1341,7 +1341,7 @@ static uiBlock *wm_block_dialog_create(bContext *C, ARegion *ar, void *userData)
 	block = uiBeginBlock(C, ar, __func__, UI_EMBOSS);
 	uiBlockClearFlag(block, UI_BLOCK_LOOP);
 
-	/* intentionally don't use 'UI_BLOCK_MOVEMOUSE_QUIT', some dialogs have many items
+	/* intentionally don't use 'UI_BLOCK_MOVEMOUSE_QUIT', some dialogues have many items
 	 * where quitting by accident is very annoying */
 	uiBlockSetFlag(block, UI_BLOCK_KEEP_OPEN);
 
@@ -1998,7 +1998,7 @@ static int wm_link_append_poll(bContext *C)
 	if (WM_operator_winactive(C)) {
 		/* linking changes active object which is pretty useful in general,
 		 * but which totally confuses edit mode (i.e. it becoming not so obvious
-		 * to leave from edit mode and inwalid tools in toolbar might be displayed)
+		 * to leave from edit mode and invalid tools in toolbar might be displayed)
 		 * so disable link/append when in edit mode (sergey) */
 		if (CTX_data_edit_object(C))
 			return 0;
diff --git a/source/creator/creator.c b/source/creator/creator.c
index 3260f0c3976..fcfec947d9f 100644
--- a/source/creator/creator.c
+++ b/source/creator/creator.c
@@ -499,8 +499,7 @@ static void blender_crash_handler_backtrace(FILE *fp)
 	symbolinfo->MaxNameLen = MAXSYMBOL - 1;
 	symbolinfo->SizeOfStruct = sizeof(SYMBOL_INFO);
 
-	for( i = 0; i < nframes; i++ )
-	{
+	for (i = 0; i < nframes; i++) {
 		SymFromAddr(process, ( DWORD64 )( stack[ i ] ), 0, symbolinfo);
 
 		fprintf(fp, "%u: %s - 0x%0X\n", nframes - i - 1, symbolinfo->Name, symbolinfo->Address);
diff --git a/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_StorageIM.cpp b/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_StorageIM.cpp
index 490c26a5c3b..7bcc8dc9034 100644
--- a/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_StorageIM.cpp
+++ b/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_StorageIM.cpp
@@ -74,7 +74,7 @@ void RAS_StorageIM::TexCoord(const RAS_TexVert &tv)
 
 	if (GLEW_ARB_multitexture) {
 		for (unit = 0; unit < *m_texco_num; unit++) {
-			switch(m_texco[unit]) {
+			switch (m_texco[unit]) {
 				case RAS_IRasterizer::RAS_TEXCO_ORCO:
 				case RAS_IRasterizer::RAS_TEXCO_GLOB:
 					glMultiTexCoord3fvARB(GL_TEXTURE0_ARB + unit, tv.getXYZ());
@@ -97,7 +97,7 @@ void RAS_StorageIM::TexCoord(const RAS_TexVert &tv)
 	if (GLEW_ARB_vertex_program) {
 		int uv = 0;
 		for (unit = 0; unit < *m_attrib_num; unit++) {
-			switch(m_attrib[unit]) {
+			switch (m_attrib[unit]) {
 				case RAS_IRasterizer::RAS_TEXCO_ORCO:
 				case RAS_IRasterizer::RAS_TEXCO_GLOB:
 					glVertexAttrib3fvARB(unit, tv.getXYZ());