X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/1f8153bdcb58e8980487eabd1f31dacf97a5f592..b6dbf1d39057ebab301f6e56d7c7ebcd44cefe8b:/lib/feature.pm

diff --git a/lib/feature.pm b/lib/feature.pm
index b83ebff..668b430 100644
--- a/lib/feature.pm
+++ b/lib/feature.pm
@@ -5,10 +5,11 @@
 
 package feature;
 
-our $VERSION = '1.54';
+our $VERSION = '1.57';
 
 our %feature = (
     fc              => 'feature_fc',
+    isa             => 'feature_isa',
     say             => 'feature_say',
     state           => 'feature_state',
     switch          => 'feature_switch',
@@ -29,7 +30,7 @@ our %feature_bundle = (
     "5.15"    => [qw(current_sub evalbytes fc say state switch unicode_eval unicode_strings)],
     "5.23"    => [qw(current_sub evalbytes fc postderef_qq say state switch unicode_eval unicode_strings)],
     "5.27"    => [qw(bitwise current_sub evalbytes fc postderef_qq say state switch unicode_eval unicode_strings)],
-    "all"     => [qw(bitwise current_sub declared_refs evalbytes fc postderef_qq refaliasing say signatures state switch unicode_eval unicode_strings)],
+    "all"     => [qw(bitwise current_sub declared_refs evalbytes fc isa postderef_qq refaliasing say signatures state switch unicode_eval unicode_strings)],
     "default" => [qw()],
 );
 
@@ -350,6 +351,14 @@ Reference to a Variable> for examples.
 
 This feature is available from Perl 5.26 onwards.
 
+=head2 The 'isa' feature
+
+This allows the use of the C<isa> infix operator, which tests whether the
+scalar given by the left operand is an object of the class given by the
+right operand. See L<perlop/Class Instance Operator> for more details.
+
+This feature is available from Perl 5.32 onwards.
+
 =head1 FEATURE BUNDLES
 
 It's possible to load multiple features together, using
@@ -485,7 +494,7 @@ sub __common {
     my $import = shift;
     my $bundle_number = $^H & $hint_mask;
     my $features = $bundle_number != $hint_mask
-	&& $feature_bundle{$hint_bundles[$bundle_number >> $hint_shift]};
+      && $feature_bundle{$hint_bundles[$bundle_number >> $hint_shift]};
     if ($features) {
 	# Features are enabled implicitly via bundle hints.
 	# Delete any keys that may be left over from last time.