pervasive type constraints

[scpubgit/DX.git] / bin / dx

diff --git a/bin/dx b/bin/dx
index cf0410e..e705dfc 100644 (file)
--- a/bin/dx
+++ b/bin/dx
@@ -9,6 +9,7 @@ use DX::Utils qw(:builders);
     return $line;
   }
   sub history_add {}
+  sub isa { require Caroline; return 1 if Caroline->isa($_[1]); }
 }
 
 use_module('DX::ShellFrontend')->new(