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NEWS for Ruby 3.5.0

This document is a list of user-visible feature changes since the 3.4.0 release, except for bug fixes.

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

Language changes

  • *nil no longer calls nil.to_a, similar to how **nil does not call nil.to_hash. [Feature #21047]

Core classes updates

Note: We're only listing outstanding class updates.

  • Binding

    • Binding#local_variables does no longer include numbered parameters. Also, Binding#local_variable_get and Binding#local_variable_set reject to handle numbered parameters. [Bug #21049]

  • IO

    • IO.select accepts +Float::INFINITY+ as a timeout argument. Feature #20610

  • Set

    • Set is now a core class, instead of an autoloaded stdlib class. [Feature #21216]

  • String

Stdlib updates

The following bundled gems are promoted from default gems.

  • ostruct 0.6.1
  • pstore 0.2.0
  • benchmark 0.4.0
  • logger 1.7.0
  • rdoc 6.13.1
  • win32ole 1.9.2
  • irb 1.15.2
  • reline 0.6.1
  • readline 0.0.4
  • fiddle 1.1.8

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 3.3.0 if it has GitHub releases.

The following default gem is added.

  • win32-registry 0.1.0

The following default gems are updated.

  • RubyGems 3.7.0.dev
  • bundler 2.7.0.dev
  • json 2.11.3
  • optparse 0.7.0.dev.2
  • prism 1.4.0
  • psych 5.2.6
  • stringio 3.1.8.dev
  • strscan 3.1.5.dev
  • uri 1.0.3

The following bundled gems are added.

The following bundled gems are updated.

  • minitest 5.25.5
  • test-unit 3.6.8
  • rexml 3.4.1
  • net-imap 0.5.8
  • net-smtp 0.5.1
  • rbs 3.9.3
  • bigdecimal 3.1.9
  • syslog 0.3.0
  • csv 3.3.4
  • repl_type_completor 0.1.11

Supported platforms

Compatibility issues

Stdlib compatibility issues

  • CGI library is removed from the default gems. Now we only provide cgi/escape for the following methods:
    • CGI.escape and CGI.unescape
    • CGI.escapeHTML and CGI.unescapeHTML
    • CGI.escapeURIComponent and CGI.unescapeURIComponent
    • CGI.escapeElement and CGI.unescapeElement [Feature #21258]

C API updates

Implementation improvements

JIT