or download this
DB<8> y caller_id assertion report_code
$assertion = '$x < \'1\''
$caller_id = 1
$report_code = " unless(\$x < '1') {\cI\cI\cI\cI\cI\cI\cI\cI \cISmart
+::Comments::Any::Warn_for( \cI\cI\cI\cI\cI\cI\cI\cI\cI\cI \cI\cI\cI1,
+ \cI\cI\cI\cI\cI\cI\cI\cI \cI\cI\"\\n\", \cI\cI\cI\cI\cI\cI\cI\cI\cI
+\cI \cI\cI\cIq{### \$x < '1' was not true} \cI\cI\cI\cI \cI\cI);\cI\c
+I\cI\cI\cI\cI\cI\cI\cI\cI\cI\cI \cI Smart::Comments::Any::Dump_for(\
+cI\cI\cI\cI\cI\cI\cI \cI-caller_id\cI=> 1,\cI\cI \cI-prefix\cI\cI=>
+ q{ \$x was:},\cI \cI-varref\cI\cI=> [\$x], \cI\cI\cI \cI-no_new
+line\cI=> 1\cI\cI\cI\cI );\cI\cI\cI\cI\cI\cI\cI\cI\cI;\cI\cI\cI\cI\c
+I\cI\cI \cI die \"\\n\"\cI\cI\cI\cI\cI\cI\cI\cI\cI\cI\cI\cI\cI\cI\cI
+\cI }\cI\cI\cI\cI\cI\cI\cI\cI\cI\cI\cI\cI\cI"