Update perldelta with Richard Leach's suggestions

Co-authored-by: #23029

Author: book

pod/perldelta.pod

@@ -60,16 +60,16 @@ similar to the way that C<:reader> already creates reader accessors.
 
 =head2 New C<any> and C<all> operators
 
-Two new experimental features have been added, which add two new list-processing
-operators, C<any> and C<all>.
+Two new experimental features have been added, which introduce the
+list-processing operators C<any> and C<all>.
 
     use v5.40;
     use feature 'keyword_all';
     no warnings 'experimental::keyword_all';
 
     my @numbers = ...
 
-    if(all { $_ % 2 == 0 } @numbers) {
+    if ( all { $_ % 2 == 0 } @numbers ) {
         say "All the numbers are even";
     }
 
@@ -145,12 +145,9 @@ v5.10.  Their behavior was significantly changed in v5.10.1.  When the
 retroactively declared experimental.  Over the years, proposals to fix or
 supplement the features have come and gone.
 
-They were deprecated in Perl v5.38.0 and scheduled for removal in Perl
-5.42.0, and entirely removed in Perl 5.41.3.
-
-After some discussion these have been re-instated in 5.41.9.
-
-Using them no longer produces a deprecation warning.
+They were deprecated in Perl v5.38.0 and scheduled for removal in
+Perl v5.42.0. After some discussion their removal has been indefinitely
+postponed. Using them no longer produces a deprecation warning.
 
 Switch itself still requires the C<switch> feature, which is enabled
 by default for feature bundles from v5.9.5 through to v5.34.  Switch
@@ -346,10 +343,6 @@ C<("A" x 1_000_000).time> might be a suitable small change.
 
 =item *
 
-C<Perl_leave_adjust_stacks>: additional efficiency for mortal copies.
-
-=item *
-
 C<tr///> now runs at the same speed regardless of the internal
 representation of its operand, as long as the only characters being
 translated are ASCII-range, for example C<tr/A-Z/a-z/>.  Previously, if
@@ -397,21 +390,6 @@ when coming from an C<SVt_IV>, is now more efficient.
 
 =item *
 
-Subroutines in packages no longer need to be stored in typeglobs:
-declaring a subroutine will now put a simple sub reference directly in the
-stash if possible, saving memory.  The typeglob still notionally exists,
-so accessing it will cause the stash entry to be upgraded to a typeglob
-(i.e. this is just an internal implementation detail).
-This optimization does not currently apply to XSUBs or exported
-subroutines, and method calls will undo it, since they cache things in
-typeglobs.
-[L<GH #23001|https://github.com/Perl/perl5/issues/23001>]
-
-(This optimization was originally announced in L<perl5220delta>, but due to a
-bug it only worked for subroutines in package C<main>, not in modules.)
-
-=item *
-
 String reversal from a single argument, when the string buffer is not
 "swiped", is now done in a single pass and is noticeably faster.
 The extent of the improvement is compiler & hardware dependent.