comment blessed use so people who fail at perl stop trying to break it

diff --git a/Changes b/Changes
index 687ab37..d1fb2e0 100644 (file)
--- a/Changes
+++ b/Changes
@@ -1,5 +1,7 @@
 Revision history for Safe-Isa
 
+  - comment blessed use so people who don't know perl stop trying to break it
+
 1.000004   2013-09-18
   - fixed slightly mangled metadata from last release
 

diff --git a/lib/Safe/Isa.pm b/lib/Safe/Isa.pm
index a42566f..81d2281 100644 (file)
--- a/lib/Safe/Isa.pm
+++ b/lib/Safe/Isa.pm
@@ -11,6 +11,9 @@ our @EXPORT = qw($_call_if_object $_isa $_can $_does $_DOES);
 
 our $_call_if_object = sub {
   my ($obj, $method) = (shift, shift);
+  # This is intentionally a truth test, not a defined test, otherwise
+  # we gratuitously break modules like Scalar::Defer, which would be
+  # un-perlish.
   return unless blessed($obj);
   return $obj->$method(@_);
 };