ENH: Better policies for functions and macros

This teaches functions and macros to use policies recorded at creation
time when they are invoked.  It restores the policies as a weak policy
stack entry so that any policies set by a function escape to its caller
as before.

1 files changed, 5 insertions, 1 deletions

diff --git a/Source/cmFunctionCommand.h b/Source/cmFunctionCommand.h
index b9f9010..ced8218 100644
--- a/Source/cmFunctionCommand.h
+++ b/Source/cmFunctionCommand.h
@@ -104,7 +104,11 @@ public:
       "will have the actual values of the arguments passed in. This "
       "facilitates creating functions with optional arguments. Additionally "
       "ARGV holds the list of all arguments given to the function and ARGN "
-      "holds the list of argument pass the last expected argument.";
+      "holds the list of argument pass the last expected argument."
+      "\n"
+      "See the cmake_policy() command documentation for the behavior of "
+      "policies inside functions."
+      ;
     }
 
   cmTypeMacro(cmFunctionCommand, cmCommand);