; exchange-point-and-mark-highlight-region: Add more detail here too

(cherry picked from commit a5f2d6279e0793aa0f8ba1939273866b6464b7e7)

diff --git a/lisp/simple.el b/lisp/simple.el
index f6b8e4427bca06a88cb33abe4c8721dca6904f97..c7a8d24a70cd9aa1c14f914071444e12fc8a780f 100644 (file)
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -7283,7 +7283,10 @@ Does not set point.  Does nothing if mark ring is empty."
   "Activate region when exchanging point and mark.
 
 When set to nil, this modifies `exchange-point-and-mark' so that it
-doesn't activate the mark if it is not already active.
+doesn't activate the mark if it is not already active, except when there
+is a prefix argument.  Setting this variable to nil effectively swaps
+the meanings of the presence and absence of a prefix argument to
+`exchange-point-and-mark'.
 
 This variable has no effect when Transient Mark mode is off."
   :type 'boolean