print a warning when Completion is loaded but the Term::ReadLine object doesn't suppo...

git-svn-id: http://dev.catalyst.perl.org/repos/bast/trunk/Devel-REPL@4322 bd8105ee-0ff8-0310-8827-fb3f25b6796d

diff --git a/lib/Devel/REPL/Plugin/Completion.pm b/lib/Devel/REPL/Plugin/Completion.pm
index e9ac902..126b81e 100644 (file)
--- a/lib/Devel/REPL/Plugin/Completion.pm
+++ b/lib/Devel/REPL/Plugin/Completion.pm
@@ -18,6 +18,12 @@ has match_index => (
   default => sub { 0 },
 );
 
+has no_term_class_warning => (
+  isa => "Bool",
+  is  => "rw",
+  default => 0,
+);
+
 sub BEFORE_PLUGIN {
   my ($self) = @_;
 
@@ -29,6 +35,13 @@ sub BEFORE_PLUGIN {
   };
 }
 
+sub AFTER_PLUGIN {
+  my ($self) = @_;
+
+  warn "Term::ReadLine::Gnu is required for the Completion plugin to work"
+    unless $self->term->isa("Term::ReadLine::Gnu") and !$self->no_term_class_warning;
+}
+
 sub _completion {
   my ($self, $text, $line, $start, $end) = @_;