Bug #128690 for Archive-Extract-Libarchive: Better compatibility with Archive::Extract

It is useful to be able to replace Archive::Extract with Archive::Extract::Libarchive when possible. This allows the caller to take advantage of A::E::L's improved performance without sacrificing portability. The APIs are almost close enough for something like the following to work:      foreach my $ac (qw/Archive::Extract::Libarchive Archive::Extract/) {                 if( eval "require $ac;" ) {                     $aclass = $ac;                     last;                 }             }             die( $@ ) if( $@ );         my $ae = $aclass->new( archive => $filename, type => 'tgz' ); However, it would be helpful if A::E::L included at least the following methods of A::E:     type() - return detected type of the archive     types() - return list of types supported Support for these would make it easier to port A::E users to A::E::L. Note: The convenience methods (is_XXX) of A::E are not essential, as they can be replaced in the caller. The 'type' entry for new is ignored by A::E::L, which is not a problem.  Likewise, the BOOL argument to error() is ignored, also not a problem.  And the A::E  globals (DEBUG, WARN, PREFER_BIN) can also safely be ignored.  (However, defining them would avoid "only used once" warnings.  They're easily suppressed in the caller.) Documenting compatibility with A::E would also be nice. Thanks.