ENH: support unset of properties

1 files changed, 6 insertions, 3 deletions

diff --git a/Source/cmGetPropertyCommand.h b/Source/cmGetPropertyCommand.h
index 0df2371e66..d7503ba690 100644
--- a/Source/cmGetPropertyCommand.h
+++ b/Source/cmGetPropertyCommand.h
@@ -68,7 +68,7 @@ public:
         "                TEST      <test>   |\n"
         "                VARIABLE>\n"
         "               PROPERTY <name>\n"
-        "               [DEFINED | BRIEF_DOCS | FULL_DOCS])\n"
+        "               [SET | DEFINED | BRIEF_DOCS | FULL_DOCS])\n"
         "Get one property from one object in a scope.  "
         "The first argument specifies the variable in which to store the "
         "result.  "
@@ -85,8 +85,11 @@ public:
         "The required PROPERTY option is immediately followed by the name "
         "of the property to get.  "
         "If the property is not set an empty value is returned.  "
+        "If the SET option is given the variable is set to a boolean "
+        "value indicating whether the property has been set."
         "If the DEFINED option is given the variable is set to a boolean "
-        "value indicating whether the property has been set.  "
+        "value indicating whether the property has been defined "
+        "such as with define_property. "
         "If BRIEF_DOCS or FULL_DOCS is given then the variable is set to "
         "a string containing documentation for the requested property.  "
         "If documentation is requested for a property that has not been "
@@ -95,7 +98,7 @@ public:
   
   cmTypeMacro(cmGetPropertyCommand, cmCommand);
 private:
-  enum OutType { OutValue, OutDefined, OutBriefDoc, OutFullDoc };
+  enum OutType { OutValue, OutDefined, OutBriefDoc, OutFullDoc, OutSet };
   std::string Variable;
   std::string Name;
   std::string PropertyName;