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-# NEWS for Ruby 3.4.0
+# NEWS for Ruby 4.1.0
This document is a list of user-visible feature changes
-since the **3.3.0** release, except for bug fixes.
+since the **4.0.0** release, except for bug fixes.
Note that each entry is kept to a minimum, see links for details.
## Language changes
-* String literals in files without a `frozen_string_literal` comment now emit a deprecation warning
- when they are mutated.
- These warnings can be enabled with `-W:deprecated` or by setting `Warning[:deprecated] = true`.
- To disable this change, you can run Ruby with the `--disable-frozen-string-literal`
- command line argument. [[Feature #20205]]
-
-* `it` is added to reference a block parameter. [[Feature #18980]]
-
-* Keyword splatting `nil` when calling methods is now supported.
- `**nil` is treated similarly to `**{}`, passing no keywords,
- and not calling any conversion methods. [[Bug #20064]]
-
-* Block passing is no longer allowed in index assignment
- (e.g. `a[0, &b] = 1`). [[Bug #19918]]
-
-* Keyword arguments are no longer allowed in index assignment
- (e.g. `a[0, kw: 1] = 2`). [[Bug #20218]]
+* `Module#clone` and `Module#dup` no longer rewrite the lexical scope of
+ copied methods. Constants and class variables resolve through the
+ original class, consistent with inheritance and mixins.
+ [[Feature #21981]]
## Core classes updates
Note: We're only listing outstanding class updates.
-* Exception
-
- * Exception#set_backtrace now accepts arrays of Thread::Backtrace::Location.
- Kernel#raise, Thread#raise and Fiber#raise also accept this new format. [[Feature #13557]]
-
-* GC
-
- * GC.config added to allow setting configuration variables on the Garbage
- Collector. [[Feature #20443]]
-
- * GC configuration parameter `rgengc_allow_full_mark` introduced. When `false`
- GC will only mark young objects. Default is `true`. [[Feature #20443]]
+* Array
-* Hash
+ * `Array#pack` accepts a new format `R` and `r` for unpacking unsigned
+ and signed LEB128 encoded integers. [[Feature #21785]]
+ * `Array#pack` accepts a new format `^` that returns the current offset.
+ Useful when combined with variable width formats like LEB128. [[Feature #21796]]
- * Hash.new now accepts an optional `capacity:` argument, to preallocate the hash with a given capacity.
- This can improve performance when building large hashes incrementally by saving on reallocation and
- rehashing of keys. [[Feature #19236]]
+* ENV
-* Fiber::Scheduler
+ * `ENV.fetch_values` is added. It returns an array of values for the
+ given names, raising `KeyError` for missing names unless a block is
+ given. [[Feature #21781]]
- * An optional `Fiber::Scheduler#blocking_operation_wait` hook allows blocking operations to be moved out of the
- event loop in order to reduce latency and improve multi-core processor utilization. [[Feature #20876]]
+* Kernel
-* IO::Buffer
-
- * IO::Buffer#copy can release the GVL, allowing other threads to run while copying data. [[Feature #20902]]
-
-* Integer
-
- * Integer#** used to return `Float::INFINITY` when the return value is large, but now returns an Integer.
- If the return value is extremely large, it raises an exception.
- [[Feature #20811]]
+ * `Kernel#autoload_relative` and `Module#autoload_relative` are added.
+ These methods work like `autoload`, but resolve the file path relative
+ to the file where the method is called, similar to `require_relative`.
+ This makes it easier to autoload constants from files in the same
+ directory without hardcoding absolute paths or manipulating `$LOAD_PATH`.
+ [[Feature #15330]]
* MatchData
- * MatchData#bytebegin and MatchData#byteend have been added. [[Feature #20576]]
-
-* Ractor
-
- * `require` in Ractor is allowed. The requiring process will be run on
- the main Ractor.
- `Ractor._require(feature)` is added to run requiring process on the
- main Ractor.
- [[Feature #20627]]
-
- * Ractor.main? is added. [[Feature #20627]]
-
- * Ractor.[] and Ractor.[]= are added to access the ractor local storage
- of the current Ractor. [[Feature #20715]]
+ * `MatchData#integer_at` is added. It converts the matched substring to
+ integer and return the result. [[Feature #21932]]
-* Range
+* Regexp
- * Range#size now raises TypeError if the range is not iterable. [[Misc #18984]]
- * Range#step now consistently has a semantics of iterating by using `+` operator
- for all types, not only numerics. [[Feature #18368]]
+ * All instances of `Regexp` are now frozen, not just literals.
+ Subclasses of `Regexp` are not frozen for compatibility.
+ [[Feature #8948]]
- ```ruby
- (Time.utc(2022, 2, 24)..).step(24*60*60).take(3)
- #=> [2022-02-24 00:00:00 UTC, 2022-02-25 00:00:00 UTC, 2022-02-26 00:00:00 UTC]
- ```
+* Set
-* Rational
-
- * Rational#** used to return `Float::INFINITY` or `Float::NAN`
- when the numerator of the return value is large, but now returns an Integer.
- If it is extremely large, it raises an exception. [[Feature #20811]]
-
-* Refinement
-
- * Removed deprecated method `Refinement#refined_class`. [[Feature #19714]]
-
-* RubyVM::AbstractSyntaxTree
-
- * Add RubyVM::AbstractSyntaxTree::Node#locations method which returns location objects
- associated with the AST node. [[Feature #20624]]
- * Add RubyVM::AbstractSyntaxTree::Location class which holds location information. [[Feature #20624]]
-
-* Time
-
- * On Windows, now Time#zone encodes the system timezone name in UTF-8
- instead of the active code page, if it contains non-ASCII characters.
- [[Bug #20929]]
-
-* Warning
-
- * Add Warning.categories method which returns a list of possible warning categories.
- [[Feature #20293]]
+ * A deprecated behavior, `Set#to_set`, `Range#to_set`, and
+ `Enumerable#to_set` accepting arguments, was removed. [[Feature #21390]]
## Stdlib updates
-* Tempfile
-
- * The keyword argument `anonymous: true` is implemented for Tempfile.create.
- `Tempfile.create(anonymous: true)` removes the created temporary file immediately.
- So applications don't need to remove the file.
- [[Feature #20497]]
-
-* win32/sspi.rb
-
- * This library is now extracted from the Ruby repository to [ruby/net-http-sspi].
- [[Feature #20775]]
-
-The following default gem is added.
-
-* win32-registry 0.1.0
-
-The following default gems are updated.
-
-* RubyGems 3.6.0.dev
-* benchmark 0.4.0
-* bundler 2.6.0.dev
-* date 3.4.1
-* delegate 0.4.0
-* did_you_mean 2.0.0
-* digest 3.2.0.pre0
-* erb 4.0.4
-* error_highlight 0.7.0
-* etc 1.4.5
-* fcntl 1.2.0
-* fiddle 1.1.6.dev
-* fileutils 1.7.3
-* io-console 0.8.0
-* io-nonblock 0.3.1
-* ipaddr 1.2.7
-* irb 1.14.1
-* json 2.9.0
-* logger 1.6.2
-* net-http 0.6.0
-* open-uri 0.5.0
-* optparse 0.6.0
-* ostruct 0.6.1
-* pathname 0.4.0
-* pp 0.6.2
-* prism 1.0.0
-* pstore 0.1.4
-* psych 5.2.1
-* rdoc 6.8.1
-* reline 0.5.12
-* resolv 0.5.0
-* securerandom 0.4.0
-* set 1.1.1
-* shellwords 0.2.1
-* singleton 0.3.0
-* stringio 3.1.2.dev
-* strscan 3.1.1.dev
-* syntax_suggest 2.0.2
-* tempfile 0.3.1
-* time 0.4.1
-* timeout 0.4.2
-* tmpdir 0.3.0
-* uri 1.0.2
-* win32ole 1.9.0
-* yaml 0.4.0
-* zlib 3.2.0
-
-The following bundled gem is added.
-
-* repl_type_completor 0.1.7
-
-The following bundled gems are updated.
-
-* minitest 5.25.4
-* power_assert 2.0.4
-* rake 13.2.1
-* test-unit 3.6.4
-* rexml 3.3.9
-* rss 0.3.1
-* net-ftp 0.3.8
-* net-imap 0.5.1
-* net-smtp 0.5.0
-* prime 0.1.3
-* rbs 3.7.0
-* typeprof 0.21.11
-* debug 1.9.2
-* racc 1.8.1
-
-The following bundled gems are promoted from default gems.
-
+### The following bundled gems are added.
+
+
+We only list stdlib changes that are notable feature changes.
+
+Other changes are listed in the following sections. We also listed release
+history from the previous bundled version that is Ruby 3.4.0 if it has GitHub
+releases.
+
+### The following bundled gems are promoted from default gems.
+
+* tsort 0.2.0
+* win32-registry 0.1.2
+
+### The following default gem is added.
+
+### The following default gems are updated.
+
+* RubyGems 4.1.0.dev
+ * 4.0.3 to [v4.0.4][RubyGems-v4.0.4], [v4.0.5][RubyGems-v4.0.5], [v4.0.6][RubyGems-v4.0.6], [v4.0.7][RubyGems-v4.0.7], [v4.0.8][RubyGems-v4.0.8], [v4.0.9][RubyGems-v4.0.9], [v4.0.10][RubyGems-v4.0.10], [v4.0.11][RubyGems-v4.0.11], [v4.0.12][RubyGems-v4.0.12], [v4.0.13][RubyGems-v4.0.13]
+* bundler 4.1.0.dev
+ * 4.0.3 to [v4.0.4][bundler-v4.0.4], [v4.0.5][bundler-v4.0.5], [v4.0.6][bundler-v4.0.6], [v4.0.7][bundler-v4.0.7], [v4.0.8][bundler-v4.0.8], [v4.0.9][bundler-v4.0.9], [v4.0.10][bundler-v4.0.10], [v4.0.11][bundler-v4.0.11], [v4.0.12][bundler-v4.0.12], [v4.0.13][bundler-v4.0.13]
+* erb 6.0.4
+ * 6.0.1 to [v6.0.1.1][erb-v6.0.1.1], [v6.0.2][erb-v6.0.2], [v6.0.3][erb-v6.0.3], [v6.0.4][erb-v6.0.4]
+* ipaddr 1.2.9
+ * 1.2.8 to [v1.2.9][ipaddr-v1.2.9]
+* json 2.19.8
+ * 2.18.0 to [v2.18.1][json-v2.18.1], [v2.19.0][json-v2.19.0], [v2.19.1][json-v2.19.1], [v2.19.2][json-v2.19.2], [v2.19.3][json-v2.19.3], [v2.19.4][json-v2.19.4], [v2.19.5][json-v2.19.5], [v2.19.6][json-v2.19.6], [v2.19.7][json-v2.19.7]
+* openssl 4.0.2
+ * 4.0.0 to [v4.0.1][openssl-v4.0.1], [v4.0.2][openssl-v4.0.2]
+* prism 1.9.0
+ * 1.7.0 to [v1.8.0][prism-v1.8.0], [v1.8.1][prism-v1.8.1], [v1.9.0][prism-v1.9.0]
+* psych 5.4.0
+* resolv 0.7.1
+ * 0.7.0 to [v0.7.1][resolv-v0.7.1]
+* stringio 3.2.1.dev
+* strscan 3.1.9.dev
+ * 3.1.6 to [v3.1.7][strscan-v3.1.7], [v3.1.8][strscan-v3.1.8]
+* syntax_suggest 3.0.0
+* timeout 0.6.1
+ * 0.6.0 to [v0.6.1][timeout-v0.6.1]
+* zlib 3.2.3
+ * 3.2.2 to [v3.2.3][zlib-v3.2.3]
+
+### The following bundled gems are updated.
+
+* minitest 6.0.6
+* rake 13.4.2
+ * 13.3.1 to [v13.4.0][rake-v13.4.0], [v13.4.1][rake-v13.4.1], [v13.4.2][rake-v13.4.2]
+* test-unit 3.7.7
+ * 3.7.5 to [3.7.6][test-unit-3.7.6], [3.7.7][test-unit-3.7.7]
+* net-imap 0.6.4
+ * 0.6.2 to [v0.6.3][net-imap-v0.6.3], [v0.6.4][net-imap-v0.6.4]
+* rbs 4.0.2
+ * 3.10.0 to [v3.10.1][rbs-v3.10.1], [v3.10.2][rbs-v3.10.2], [v3.10.3][rbs-v3.10.3], [v3.10.4][rbs-v3.10.4], [v4.0.0.dev.5][rbs-v4.0.0.dev.5], [v4.0.0][rbs-v4.0.0], [v4.0.2][rbs-v4.0.2]
+* typeprof 0.32.0
* mutex_m 0.3.0
-* getoptlong 0.2.1
-* base64 0.2.0
-* bigdecimal 3.1.8
-* observer 0.1.2
-* abbrev 0.1.2
-* resolv-replace 0.1.1
-* rinda 0.2.0
-* drb 2.2.1
-* nkf 0.2.0
-* syslog 0.2.0
-* csv 3.3.0
-
-See GitHub releases like [GitHub Releases of Logger] or changelog for
-details of the default gems or bundled gems.
-
-[ruby/net-http-sspi]: https://github.com/ruby/net-http-sspi
-[GitHub Releases of Logger]: https://github.com/ruby/logger/releases
+* bigdecimal 4.1.2
+ * 4.0.1 to [v4.1.0][bigdecimal-v4.1.0], [v4.1.1][bigdecimal-v4.1.1], [v4.1.2][bigdecimal-v4.1.2]
+* resolv-replace 0.2.0
+ * 0.1.1 to [v0.2.0][resolv-replace-v0.2.0]
+* syslog 0.4.0
+ * 0.3.0 to [v0.4.0][syslog-v0.4.0]
+* repl_type_completor 0.1.15
+ * 0.1.12 to [v0.1.13][repl_type_completor-v0.1.13], [v0.1.14][repl_type_completor-v0.1.14], [v0.1.15][repl_type_completor-v0.1.15]
+* pstore 0.2.1
+ * 0.2.0 to [v0.2.1][pstore-v0.2.1]
+* rdoc 7.2.0
+ * 7.0.3 to [v7.0.4][rdoc-v7.0.4], [v7.1.0][rdoc-v7.1.0], [v7.2.0][rdoc-v7.2.0]
+* win32ole 1.9.3
+ * 1.9.2 to [v1.9.3][win32ole-v1.9.3]
+* irb 1.18.0
+ * 1.16.0 to [v1.17.0][irb-v1.17.0], [v1.18.0][irb-v1.18.0]
+
+### RubyGems and Bundler
+
+Ruby 4.0 bundled RubyGems and Bundler version 4. see the following links for details.
## Supported platforms
## Compatibility issues
-* Error messages and backtrace displays have been changed.
-
- * Use a single quote instead of a backtick as an opening quote. [[Feature #16495]]
- * Display a class name before a method name (only when the class has a permanent name). [[Feature #19117]]
- * Extra `rescue`/`ensure` frames are no longer available on the backtrace. [[Feature #20275]]
- * Kernel#caller, Thread::Backtrace::Location’s methods, etc. are also changed accordingly.
-
- Old:
- ```
- test.rb:1:in `foo': undefined method `time' for an instance of Integer
- from test.rb:2:in `<main>'
- ```
-
- New:
- ```
- test.rb:1:in 'Object#foo': undefined method 'time' for an instance of Integer
- from test.rb:2:in '<main>'
- ```
-
-* Hash#inspect rendering have been changed. [[Bug #20433]]
-
- * Symbol keys are displayed using the modern symbol key syntax: `"{user: 1}"`
- * Other keys now have spaces around `=>`: `'{"user" => 1}'`, while previously they didn't: `'{"user"=>1}'`
-
-* Kernel#Float() now accepts a decimal string with decimal part omitted. [[Feature #20705]]
- ```
- Float("1.") #=> 1.0 (previously, an ArgumentError was raised)
- Float("1.E-1") #=> 0.1 (previously, an ArgumentError was raised)
- ```
-
-* String#to_f now accepts a decimal string with decimal part omitted. [[Feature #20705]]
- Note that the result changes when an exponent is specified.
- ```
- "1.".to_f #=> 1.0
- "1.E-1".to_f #=> 0.1 (previously, 1.0 was returned)
- ```
-
-* Object#singleton_method now returns methods in modules prepended to or included in the
- receiver's singleton class. [[Bug #20620]]
- ```
- o = Object.new
- o.extend(Module.new{def a = 1})
- o.singleton_method(:a).call #=> 1
- ```
-
## Stdlib compatibility issues
-* DidYouMean
-
- * `DidYouMean::SPELL_CHECKERS[]=` and `DidYouMean::SPELL_CHECKERS.merge!` are removed.
+## C API updates
-* Net::HTTP
+### Embedded TypedData
- * Removed the following deprecated constants:
- `Net::HTTP::ProxyMod`
- `Net::NetPrivate::HTTPRequest`
- `Net::HTTPInformationCode`
- `Net::HTTPSuccessCode`
- `Net::HTTPRedirectionCode`
- `Net::HTTPRetriableCode`
- `Net::HTTPClientErrorCode`
- `Net::HTTPFatalErrorCode`
- `Net::HTTPServerErrorCode`
- `Net::HTTPResponseReceiver`
- `Net::HTTPResponceReceiver`
+* The `RUBY_TYPED_EMBEDDABLE` flag is now public and documented and can be used by C extensions.
+ It allows allocating C structs directly into Ruby object slots, which reduces pointer chasing,
+ and in some case memory usage.
+ See the C extension documentation for details. [[Feature #21853]]
- These constants were deprecated from 2012.
+* Added new C23 inspired allocator functions, that takes the previous memory size.
+ This allow the Ruby GC to better keep track of memory usage, improving its heuristics.
+ It also improves the performance of system allocators that support C23 `free_sized`.
-* Timeout
+ However, it is important to note that passing an incorrect size to these function is undefined
+ behavior and may result in crashes or memory leaks.
- * Reject negative values for Timeout.timeout. [[Bug #20795]]
+ - `ruby_xfree_sized(void *ptr, size_t size)`
+ - `ruby_xrealloc_sized(void *ptr, size_t newsiz, size_t oldsiz)`
+ - `ruby_xrealloc2_sized(void *ptr, size_t newelems, size_t newsiz, size_t oldelems)`
-* URI
+ [[Feature #21861]]
- * Switched default parser to RFC 3986 compliant from RFC 2396 compliant.
- [[Bug #19266]]
+### Removed APIs
-## C API updates
+The following APIs, which have been deprecated for many years, are removed.
+[[Feature #21768]]
-* `rb_newobj` and `rb_newobj_of` (and corresponding macros `RB_NEWOBJ`, `RB_NEWOBJ_OF`, `NEWOBJ`, `NEWOBJ_OF`) have been removed. [[Feature #20265]]
-* Removed deprecated function `rb_gc_force_recycle`. [[Feature #18290]]
+* old postponed job functions,
+* untyped data object type/functions,
+* old APIs to allocate a data object,
+* taintedness/trustedness enums/macros,
+* `rb_gc_force_recycle` function,
+* `rb_iterate` function,
+* and some functions and constants for internal use.
## Implementation improvements
-* The default parser is now Prism.
- To use the conventional parser, use the command-line argument `--parser=parse.y`.
- [[Feature #20564]]
-* Happy Eyeballs version 2 (RFC8305) is used in Socket.tcp.
- To disable it, use the keyword argument `fast_fallback: false`.
- [[Feature #20108]]
-* Happy Eyeballs version 2 (RFC8305) is implemented in TCPSocket.new.
- To enable it, use the keyword argument `fast_fallback: true`.
- (This entry is temporary. It should be merged with the above entry after it becomes settled)
- [[Feature #20782]]
-* Array#each is rewritten in Ruby for better performance [[Feature #20182]].
-
-* Alternative garbage collector (GC) implementations can be loaded dynamically
- through the modular garbage collector feature. To enable this feature,
- configure Ruby with `--with-modular-gc` at build time. GC libraries can be
- loaded at runtime using the environment variable `RUBY_GC_LIBRARY`.
- [[Feature #20351]]
-
-* Ruby's built-in garbage collector has been split into a separate file at
- `gc/default/default.c` and interacts with Ruby using an API defined in
- `gc/gc_impl.h`. The built-in garbage collector can now also be built as a
- library using `make modular-gc MODULAR_GC=default` and enabled using the
- environment variable `RUBY_GC_LIBRARY=default`. [[Feature #20470]]
-
-* An experimental GC library is provided based on [MMTk](https://www.mmtk.io/).
- This GC library can be built using `make modular-gc MODULAR_GC=mmtk` and
- enabled using the environment variable `RUBY_GC_LIBRARY=mmtk`. This requires
- the Rust toolchain on the build machine. [[Feature #20860]]
+### Ractor
+
+A lot of work has gone into making Ractors more stable, performant, and usable. These improvements bring Ractor implementation closer to leaving experimental status.
## JIT
-## Miscellaneous changes
-
-* Passing a block to a method which doesn't use the passed block will show
- a warning on verbose mode (`-w`).
- [[Feature #15554]]
-
-* Redefining some core methods that are specially optimized by the interpreter
- and JIT like String#freeze or Integer#+ now emits a performance class
- warning (`-W:performance` or `Warning[:performance] = true`).
- [[Feature #20429]]
-
-[Feature #13557]: https://bugs.ruby-lang.org/issues/13557
-[Feature #15554]: https://bugs.ruby-lang.org/issues/15554
-[Feature #16495]: https://bugs.ruby-lang.org/issues/16495
-[Feature #18290]: https://bugs.ruby-lang.org/issues/18290
-[Feature #18368]: https://bugs.ruby-lang.org/issues/18368
-[Feature #18980]: https://bugs.ruby-lang.org/issues/18980
-[Misc #18984]: https://bugs.ruby-lang.org/issues/18984
-[Feature #19117]: https://bugs.ruby-lang.org/issues/19117
-[Feature #19236]: https://bugs.ruby-lang.org/issues/19236
-[Bug #19266]: https://bugs.ruby-lang.org/issues/19266
-[Feature #19714]: https://bugs.ruby-lang.org/issues/19714
-[Bug #19918]: https://bugs.ruby-lang.org/issues/19918
-[Bug #20064]: https://bugs.ruby-lang.org/issues/20064
-[Feature #20108]: https://bugs.ruby-lang.org/issues/20108
-[Feature #20182]: https://bugs.ruby-lang.org/issues/20182
-[Feature #20205]: https://bugs.ruby-lang.org/issues/20205
-[Bug #20218]: https://bugs.ruby-lang.org/issues/20218
-[Feature #20265]: https://bugs.ruby-lang.org/issues/20265
-[Feature #20275]: https://bugs.ruby-lang.org/issues/20275
-[Feature #20293]: https://bugs.ruby-lang.org/issues/20293
-[Feature #20351]: https://bugs.ruby-lang.org/issues/20351
-[Feature #20429]: https://bugs.ruby-lang.org/issues/20429
-[Bug #20433]: https://bugs.ruby-lang.org/issues/20433
-[Feature #20443]: https://bugs.ruby-lang.org/issues/20443
-[Feature #20470]: https://bugs.ruby-lang.org/issues/20470
-[Feature #20497]: https://bugs.ruby-lang.org/issues/20497
-[Feature #20564]: https://bugs.ruby-lang.org/issues/20564
-[Feature #20576]: https://bugs.ruby-lang.org/issues/20576
-[Bug #20620]: https://bugs.ruby-lang.org/issues/20620
-[Feature #20624]: https://bugs.ruby-lang.org/issues/20624
-[Feature #20627]: https://bugs.ruby-lang.org/issues/20627
-[Feature #20705]: https://bugs.ruby-lang.org/issues/20705
-[Feature #20715]: https://bugs.ruby-lang.org/issues/20715
-[Feature #20775]: https://bugs.ruby-lang.org/issues/20775
-[Feature #20782]: https://bugs.ruby-lang.org/issues/20782
-[Bug #20795]: https://bugs.ruby-lang.org/issues/20795
-[Feature #20811]: https://bugs.ruby-lang.org/issues/20811
-[Feature #20860]: https://bugs.ruby-lang.org/issues/20860
-[Feature #20876]: https://bugs.ruby-lang.org/issues/20876
-[Feature #20902]: https://bugs.ruby-lang.org/issues/20902
-[Bug #20929]: https://bugs.ruby-lang.org/issues/20929
+[Feature #8948]: https://bugs.ruby-lang.org/issues/8948
+[Feature #15330]: https://bugs.ruby-lang.org/issues/15330
+[Feature #21390]: https://bugs.ruby-lang.org/issues/21390
+[Feature #21768]: https://bugs.ruby-lang.org/issues/21768
+[Feature #21785]: https://bugs.ruby-lang.org/issues/21785
+[Feature #21796]: https://bugs.ruby-lang.org/issues/21796
+[Feature #21853]: https://bugs.ruby-lang.org/issues/21853
+[Feature #21861]: https://bugs.ruby-lang.org/issues/21861
+[Feature #21932]: https://bugs.ruby-lang.org/issues/21932
+[Feature #21981]: https://bugs.ruby-lang.org/issues/21981
+[RubyGems-v4.0.4]: https://github.com/rubygems/rubygems/releases/tag/v4.0.4
+[RubyGems-v4.0.5]: https://github.com/rubygems/rubygems/releases/tag/v4.0.5
+[RubyGems-v4.0.6]: https://github.com/rubygems/rubygems/releases/tag/v4.0.6
+[RubyGems-v4.0.7]: https://github.com/rubygems/rubygems/releases/tag/v4.0.7
+[RubyGems-v4.0.8]: https://github.com/rubygems/rubygems/releases/tag/v4.0.8
+[RubyGems-v4.0.9]: https://github.com/rubygems/rubygems/releases/tag/v4.0.9
+[RubyGems-v4.0.10]: https://github.com/rubygems/rubygems/releases/tag/v4.0.10
+[RubyGems-v4.0.11]: https://github.com/rubygems/rubygems/releases/tag/v4.0.11
+[RubyGems-v4.0.12]: https://github.com/rubygems/rubygems/releases/tag/v4.0.12
+[RubyGems-v4.0.13]: https://github.com/rubygems/rubygems/releases/tag/v4.0.13
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+[bundler-v4.0.5]: https://github.com/rubygems/rubygems/releases/tag/bundler-v4.0.5
+[bundler-v4.0.6]: https://github.com/rubygems/rubygems/releases/tag/bundler-v4.0.6
+[bundler-v4.0.7]: https://github.com/rubygems/rubygems/releases/tag/bundler-v4.0.7
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+[bundler-v4.0.11]: https://github.com/rubygems/rubygems/releases/tag/bundler-v4.0.11
+[bundler-v4.0.12]: https://github.com/rubygems/rubygems/releases/tag/bundler-v4.0.12
+[bundler-v4.0.13]: https://github.com/rubygems/rubygems/releases/tag/bundler-v4.0.13
+[erb-v6.0.1.1]: https://github.com/ruby/erb/releases/tag/v6.0.1.1
+[erb-v6.0.2]: https://github.com/ruby/erb/releases/tag/v6.0.2
+[erb-v6.0.3]: https://github.com/ruby/erb/releases/tag/v6.0.3
+[erb-v6.0.4]: https://github.com/ruby/erb/releases/tag/v6.0.4
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+[json-v2.19.0]: https://github.com/ruby/json/releases/tag/v2.19.0
+[json-v2.19.1]: https://github.com/ruby/json/releases/tag/v2.19.1
+[json-v2.19.2]: https://github.com/ruby/json/releases/tag/v2.19.2
+[json-v2.19.3]: https://github.com/ruby/json/releases/tag/v2.19.3
+[json-v2.19.4]: https://github.com/ruby/json/releases/tag/v2.19.4
+[json-v2.19.5]: https://github.com/ruby/json/releases/tag/v2.19.5
+[json-v2.19.6]: https://github.com/ruby/json/releases/tag/v2.19.6
+[json-v2.19.7]: https://github.com/ruby/json/releases/tag/v2.19.7
+[openssl-v4.0.1]: https://github.com/ruby/openssl/releases/tag/v4.0.1
+[openssl-v4.0.2]: https://github.com/ruby/openssl/releases/tag/v4.0.2
+[prism-v1.8.0]: https://github.com/ruby/prism/releases/tag/v1.8.0
+[prism-v1.8.1]: https://github.com/ruby/prism/releases/tag/v1.8.1
+[prism-v1.9.0]: https://github.com/ruby/prism/releases/tag/v1.9.0
+[resolv-v0.7.1]: https://github.com/ruby/resolv/releases/tag/v0.7.1
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+[strscan-v3.1.8]: https://github.com/ruby/strscan/releases/tag/v3.1.8
+[timeout-v0.6.1]: https://github.com/ruby/timeout/releases/tag/v0.6.1
+[zlib-v3.2.3]: https://github.com/ruby/zlib/releases/tag/v3.2.3
+[rake-v13.4.0]: https://github.com/ruby/rake/releases/tag/v13.4.0
+[rake-v13.4.1]: https://github.com/ruby/rake/releases/tag/v13.4.1
+[rake-v13.4.2]: https://github.com/ruby/rake/releases/tag/v13.4.2
+[test-unit-3.7.6]: https://github.com/test-unit/test-unit/releases/tag/3.7.6
+[test-unit-3.7.7]: https://github.com/test-unit/test-unit/releases/tag/3.7.7
+[net-imap-v0.6.3]: https://github.com/ruby/net-imap/releases/tag/v0.6.3
+[net-imap-v0.6.4]: https://github.com/ruby/net-imap/releases/tag/v0.6.4
+[rbs-v3.10.1]: https://github.com/ruby/rbs/releases/tag/v3.10.1
+[rbs-v3.10.2]: https://github.com/ruby/rbs/releases/tag/v3.10.2
+[rbs-v3.10.3]: https://github.com/ruby/rbs/releases/tag/v3.10.3
+[rbs-v3.10.4]: https://github.com/ruby/rbs/releases/tag/v3.10.4
+[rbs-v4.0.0.dev.5]: https://github.com/ruby/rbs/releases/tag/v4.0.0.dev.5
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+[rbs-v4.0.2]: https://github.com/ruby/rbs/releases/tag/v4.0.2
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+[bigdecimal-v4.1.1]: https://github.com/ruby/bigdecimal/releases/tag/v4.1.1
+[bigdecimal-v4.1.2]: https://github.com/ruby/bigdecimal/releases/tag/v4.1.2
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+[syslog-v0.4.0]: https://github.com/ruby/syslog/releases/tag/v0.4.0
+[repl_type_completor-v0.1.13]: https://github.com/ruby/repl_type_completor/releases/tag/v0.1.13
+[repl_type_completor-v0.1.14]: https://github.com/ruby/repl_type_completor/releases/tag/v0.1.14
+[repl_type_completor-v0.1.15]: https://github.com/ruby/repl_type_completor/releases/tag/v0.1.15
+[pstore-v0.2.1]: https://github.com/ruby/pstore/releases/tag/v0.2.1
+[rdoc-v7.0.4]: https://github.com/ruby/rdoc/releases/tag/v7.0.4
+[rdoc-v7.1.0]: https://github.com/ruby/rdoc/releases/tag/v7.1.0
+[rdoc-v7.2.0]: https://github.com/ruby/rdoc/releases/tag/v7.2.0
+[win32ole-v1.9.3]: https://github.com/ruby/win32ole/releases/tag/v1.9.3
+[irb-v1.17.0]: https://github.com/ruby/irb/releases/tag/v1.17.0
+[irb-v1.18.0]: https://github.com/ruby/irb/releases/tag/v1.18.0