; * src/buffer.h (struct buffer_text): Improve commentary.

diff --git a/src/buffer.h b/src/buffer.h
index 77f9ea20afaf698b9e3d4d83cce39710a0f50a2f..cbdbae798bacdbe6d42693179c4fbd81fa62944f 100644 (file)
--- a/src/buffer.h
+++ b/src/buffer.h
@@ -274,7 +274,9 @@ struct buffer_text
        end_unchanged contain no useful information.  */
     modiff_count overlay_unchanged_modified;
 
-    /* CHARS_MODIFF as of last redisplay that finished.  */
+    /* CHARS_MODIFF as of last redisplay that finished.  It's used
+       when we only care about changes in actual buffer text, not in
+       any other kind of changes, like properties etc.  */
     modiff_count chars_unchanged_modified;
 
     /* Properties of this buffer's text.  */