Cleanup: Rename ARegion variables from ar to region

The old convention was easy to confuse with ScrArea.
Part of https://developer.blender.org/T74432.

This is mostly a batch rename with some manual fixing. Only single word
variable names are changed, no prefixed/suffixed names.

Brecht van Lommel and Campbell Barton both gave me a green light for
this convention change.

Also ran clan clang format on affected files.

1 files changed, 3 insertions, 3 deletions

diff --git a/source/blender/editors/include/ED_time_scrub_ui.h b/source/blender/editors/include/ED_time_scrub_ui.h
index 0bcc39847c4..d5b9fa2a553 100644
--- a/source/blender/editors/include/ED_time_scrub_ui.h
+++ b/source/blender/editors/include/ED_time_scrub_ui.h
@@ -32,15 +32,15 @@ struct bContext;
 struct bDopeSheet;
 struct wmEvent;
 
-void ED_time_scrub_draw(const struct ARegion *ar,
+void ED_time_scrub_draw(const struct ARegion *region,
                         const struct Scene *scene,
                         bool display_seconds,
                         bool discrete_frames);
 
-bool ED_time_scrub_event_in_region(const struct ARegion *ar, const struct wmEvent *event);
+bool ED_time_scrub_event_in_region(const struct ARegion *region, const struct wmEvent *event);
 
 void ED_time_scrub_channel_search_draw(const struct bContext *C,
-                                       struct ARegion *ar,
+                                       struct ARegion *region,
                                        struct bDopeSheet *dopesheet);
 
 #ifdef __cplusplus