ruby/NEWS.md

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NEWS for Ruby 3.4.0

This document is a list of user-visible feature changes since the 3.3.0 release, except for bug fixes.

Note that each entry is kept to a minimum, see links for details.

Language changes

  • it is added to reference a block parameter. [Feature #18980]

  • Keyword splatting nil when calling methods is now supported. **nil is treated similar to **{}, passing no keywords, and not calling any conversion methods. [Bug #20064]

Core classes updates

Note: We're only listing outstanding class updates.

Stdlib updates

The following default gems are updated.

  • RubyGems 3.6.0.dev
  • bundler 2.6.0.dev
  • erb 4.0.4
  • fiddle 1.1.3
  • io-console 0.7.2
  • irb 1.11.1
  • net-http 0.4.1
  • reline 0.4.2
  • stringio 3.1.1
  • strscan 3.0.9

The following bundled gems are updated.

  • minitest 5.21.2
  • net-ftp 0.3.4
  • net-imap 0.4.9.1
  • net-smtp 0.4.0.1
  • rbs 3.4.3
  • typeprof 0.21.9
  • debug 1.9.1

The following bundled gems are promoted from default gems.

  • mutex_m 0.2.0
  • getoptlong 0.2.1
  • base64 0.2.0
  • bigdecimal 3.1.6
  • observer 0.1.2
  • abbrev 0.1.2
  • resolv-replace 0.1.1
  • rinda 0.2.0
  • drb 2.2.0
  • nkf 0.2.0
  • syslog 0.1.2
  • csv 3.2.8

See GitHub releases like GitHub Releases of Logger or changelog for details of the default gems or bundled gems.

Supported platforms

Compatibility issues

Stdlib compatibility issues

C API updates

Implementation improvements

JIT