=over 8
-=item C<our> can now have an experimental optional attribute C<unique>
-
-Introduced in Perl 5.8.0
-
-Deprecated in Perl 5.10.0
-
-=item Linux abstract Unix domain sockets
-
-Introduced in Perl 5.9.2
-
-See also L<Socket>
-
=item Smart match (C<~~>)
Introduced in Perl 5.10.0
Using this feature triggers warnings in the category
C<experimental::smartmatch>.
-=item Lexical C<$_>
-
-Introduced in Perl 5.10.0
-
-Using this feature triggers warnings in the category
-C<experimental::lexical_topic>.
+The ticket for this feature is
+L<[perl #13173]|https://github.com/Perl/perl5/issues/13173>.
=item Pluggable keywords
-See L<perlapi/PL_keyword_plugin> for the mechanism.
-
-Introduced in: Perl 5.11.2
-
-=item Array and hash container functions accept references
-
-Introduced in Perl 5.14.0
-
-=item Lexical subroutines
-
-Introduced in: Perl 5.18
+The ticket for this feature is
+L<[perl #13199]|https://github.com/Perl/perl5/issues/13199>.
-See also: L<perlsub/Lexical Subroutines>
+See L<perlapi/PL_keyword_plugin> for the mechanism.
-Using this feature triggers warnings in the category
-C<experimental::lexical_subs>.
+Introduced in Perl 5.11.2
=item Regular Expression Set Operations
-Introduced in: Perl 5.18
+Introduced in Perl 5.18
+
+The ticket for this feature is
+L<[perl #13197]|https://github.com/Perl/perl5/issues/13197>.
See also: L<perlrecharclass/Extended Bracketed Character Classes>
Using this feature triggers warnings in the category
C<experimental::regex_sets>.
-=item C<\s> in regexp matches vertical tab
-
-Introduced in Perl 5.18
-
-=item The <:win32> IO pseudolayer
-
-See also L<perlrun>
-
-=item internal functions with M flag
-
-See also L<perlguts>
-
-=item lex_start API
-
-Introduced in Perl 5.13.7
-
-=item internal API for C<%^H>
-
-Introduced in Perl 5.13.7
-
-See also C<cophh_> in L<perlapi>.
-
-=item alloccopstash
-
-Introduced in Perl 5.18.0
-
-=item av_create_and_push
-
-=item av_create_and_unshift_one
-
-=item av_create_and_unshift_one
-
-=item cop_store_label
-
-Introduced in Perl 5.16.0
-
-=item PL_keyword_plugin
-
-=item gv_fetchmethod_*_flags
-
-Introduced in Perl 5.16.0
-
-=item hv_iternext_flags
-
-=item lex_bufutf8
-
-=item lex_discard_to
-
-=item lex_grow_linestr
+=item Subroutine signatures
-=item lex_next_chunk
+Introduced in Perl 5.20.0
-=item lex_peek_unichar
+Using this feature triggers warnings in the category
+C<experimental::signatures>.
-=item lex_read_space
+The ticket for this feature is
+L<[perl #13681]|https://github.com/Perl/perl5/issues/13681>.
-=item lex_read_to
+=item Aliasing via reference
-=item lex_read_unichar
+Introduced in Perl 5.22.0
-=item lex_stuff_pv
+Using this feature triggers warnings in the category
+C<experimental::refaliasing>.
-=item lex_stuff_pvn
+The ticket for this feature is
+L<[perl #14150]|https://github.com/Perl/perl5/issues/14150>.
-=item lex_stuff_pvs
+See also: L<perlref/Assigning to References>
-=item lex_stuff_sv
+=item The "const" attribute
-=item lex_unstuff
+Introduced in Perl 5.22.0
-=item op_scope
+Using this feature triggers warnings in the category
+C<experimental::const_attr>.
-=item op_lvalue
+The ticket for this feature is
+L<[perl #14428]|https://github.com/Perl/perl5/issues/14428>.
-=item parse_fullstmt
+See also: L<perlsub/Constant Functions>
-=item parse_stmtseq
+=item use re 'strict';
-=item PL_parser-E<gt>bufend
+Introduced in Perl 5.22.0
-=item PL_parser-E<gt>bufptr
+Using this feature triggers warnings in the category
+C<experimental::re_strict>.
-=item PL_parser-E<gt>linestart
+See L<re/'strict' mode>
-=item PL_parser-E<gt>linestr
+=item The <:win32> IO pseudolayer
-=item Perl_signbit
+The ticket for this feature is
+L<[perl #13198]|https://github.com/Perl/perl5/issues/13198>.
-=item pad_findmy
+See also L<perlrun/PERLIO>
-=item sv_utf8_decode
+=item Declaring a reference to a variable
-=item sv_utf8_downgrade
+Introduced in Perl 5.26.0
-=item bytes_from_utf8
+Using this feature triggers warnings in the category
+C<experimental::declared_refs>.
-=item bytes_to_utf8
+The ticket for this feature is
+L<[perl #15458]|https://github.com/Perl/perl5/issues/15458>.
-=item utf8_to_bytes
+See also: L<perlref/Declaring a Reference to a Variable>
=item There is an C<installhtml> target in the Makefile.
-=item Unicode in Perl on EBCDIC
-
-See also: L<perlre/"Special Backtracking Control Verbs">
-
-=item Code expressions, conditional expressions, and independent expressions in regexes
+The ticket for this feature is
+L<[perl #12726]|https://github.com/Perl/perl5/issues/12726>.
-=item gv_try_downgrade
+=item (Limited) Variable-length look-behind
-See also L<perlintern>
+Introduced in Perl 5.30.0. Variability of up to 255 characters is
+handled.
-=item Experimental Support for Sun Studio Compilers for Linux OS
+Using this feature triggers warnings in the category
+C<experimental::vlb>.
-See also L<perllinux>
+See also: L<perlre/(*positive_lookbehind:I<pattern>)> and
+L<perlre/(*negative_lookbehind:I<pattern>)>
=back
See also L<perlre>
+=item Linux abstract Unix domain sockets
+
+Introduced in Perl 5.9.2
+
+Accepted before Perl 5.20.0. The Socket library is now primarily maintained
+on CPAN, rather than in the perl core.
+
+See also L<Socket>
+
=item Lvalue subroutines
Introduced in Perl 5.6.0
C<(*ACCEPT)>
-Introduced in: Perl 5.10
+Introduced in Perl 5.10
Accepted in Perl 5.20.0
=item The <:pop> IO pseudolayer
-See also L<perlrun>
+See also L<perlrun/PERLIO>
Accepted in Perl 5.20.0
+=item C<\s> in regexp matches vertical tab
+
+Accepted in Perl 5.22.0
+
+=item Postfix dereference syntax
+
+Introduced in Perl 5.20.0
+
+Accepted in Perl 5.24.0
+
+=item Lexical subroutines
+
+Introduced in Perl 5.18.0
+
+Accepted in Perl 5.26.0
+
+=item String- and number-specific bitwise operators
+
+Introduced in Perl 5.22.0
+
+Accepted in Perl 5.28.0
+
+=item Alphabetic assertions
+
+Introduced in Perl 5.28.0
+
+Accepted in Perl 5.32.0
+
+=item Script runs
+
+Introduced in Perl 5.28.0
+
+Accepted in Perl 5.32.0
+
=back
=head2 Removed features
The experimental C<legacy> pragma was swallowed by the C<feature> pragma.
-Introduced in: 5.11.2
+Introduced in Perl 5.11.2
-Removed in: 5.11.3
+Removed in Perl 5.11.3
+
+=item Lexical C<$_>
+
+Using this feature triggered warnings in the category
+C<experimental::lexical_topic>.
+
+Introduced in Perl 5.10.0
+
+Removed in Perl 5.24.0
+
+=item Array and hash container functions accept references
+
+Using this feature triggered warnings in the category
+C<experimental::autoderef>.
+
+Superseded by L</Postfix dereference syntax>.
+
+Introduced in Perl 5.14.0
+
+Removed in Perl 5.24.0
+
+=item C<our> can have an experimental optional attribute C<unique>
+
+Introduced in Perl 5.8.0
+
+Deprecated in Perl 5.10.0
+
+Removed in Perl 5.28.0
=back
+=head1 SEE ALSO
+
+For a complete list of features check L<feature>.
+
=head1 AUTHORS
brian d foy C<< <brian.d.foy@gmail.com> >>
https://perl5.git.perl.org / perl5.git / blobdiff