Skip to content

Scala 2.13.11
Compare
Choose a tag to compare
@SethTisue SethTisue released this 07 Jun 16:17
· 1200 commits to 2.13.x since this release
v2.13.11
This tag was signed with the committer’s verified signature.
SethTisue Seth Tisue
GPG key ID: A3264AA953A97466
Learn about vigilant mode.
f113b1a
This commit was created on GitHub.com and signed with GitHub’s verified signature. The key has expired.
GPG key ID: 4AEE18F83AFDEB23
Expired
Learn about vigilant mode.

The Scala team at Lightbend is pleased to announce Scala 2.13.11.

The following changes are highlights of this release:

Collections

Compatibility

Align with Scala 3

  • Accept implicit _, implicit (x: Int) in lambdas, like Scala 3 does (#10327 by @som-snytt)
  • Deprecate infix type args, as they are dropped in Scala 3 (#10255 by @som-snytt)
  • Allow eta-expansion of methods with dependent types (#10166)
  • Abstract parent copy does not suspend case copy (#10085 by @som-snytt)
  • Don't GLB binders of type patterns, use the type directly (#10247)
  • Under -Xsource:3, warn that inherited members no longer take precedence over outer definitions in Scala 3 (#10220, #10339)
  • Under -Xsource:3, adjust 2.13.9 change to ignore override type for whitebox macro expansion (#10188 by @som-snytt)
  • Under -Xsource:3, use narrowest type for pt of override (#10198 by @som-snytt)
  • Under -Xsource:3, warn about change to parenless lambda parens (#10320 by @som-snytt)

Lints and warnings

Other notable changes

  • Disallow mixins where super calls bind to vals (#10268)
  • Make scalac's argument-file processing more like javac's in handling spaces and line breaks (#10319 by @som-snytt)
  • Bump JLine and JNA versions (#10318)
  • javabootclasspath supersedes jrt (#10336 by @som-snytt)
  • Report total errors on stderr (#10272 by @som-snytt)
  • Fix pathologically slow compilation of some pattern matches since 2.13.7 (#10258 by @KisaragiEffective)
  • Provide equals and hashCode on IterableWrapper again (fixing 2.13.9 regression) (#10205 by @som-snytt)
  • Improvements to -Vimplicits; errors now show complete implicit search tree (#9944 by @tribbloid)
  • -Vprint defaults to -Vprint:typer; phases may be prefixed with ~ to mean "before and after" (#10173 by @som-snytt)

2.13.11 also includes the changes from Scala 2.12.18. (A few of the most significant, such as those involving JDK 20 and 21 compatibility, are listed above.)

For the complete 2.13.11 change lists, see all merged PRs and all closed bugs.

Known issues

A few regressions have been discovered:

  • Exhaustivity checker emits spurious warning when matching on Java enum type (2.13.11 regression) (scala/bug#12800)
  • Duplicated @Deprecated annotations when extending Java interface with deprecated default method cause java.lang.annotation.AnnotationFormatError when accessed via Java reflection (2.13.11 regression) (scala/bug#12799)

We'll address these in Scala 2.13.12.

Compatibility

As usual for our minor releases, Scala 2.13.11 is binary-compatible with the whole Scala 2.13 series.

Upgrading from 2.12? Enable -Xmigration while upgrading to request migration advice from the compiler.

Contributors

A big thank you to everyone who's helped improve Scala by reporting bugs, improving our documentation, spreading kindness in discussions around Scala, and submitting and reviewing pull requests! You are all magnificent.

We especially acknowledge and thank A. P. Marki, also known as Som Snytt, who is responsible for a large share of the improvements in this release.

This release was brought to you by 28 contributors, according to git shortlog -sn --no-merges @ ^v2.13.10 ^2.12.x. Thank you A. P. Marki, Lukas Rytz, Seth Tisue, Anselm von Wangenheim, Scala Steward, Liang Yan, Jamie Thompson, jxnu-liguobin, AminMal, Jason Zaugg, Kenji Yoshida, Rituraj, ashish, Chris Kipp, Dale Wijnand, Francesco Kriegel, Georgi Chochov, Goooler, João Costa, Kisaragi Marine, Rafał Sumisławski, Ruslans Tarasovs, Simon R, Sébastien Doeraene, Tomasz Godzik, Zhang Zhipeng, danarmak, hepin.p.

Thanks to Lightbend for their continued sponsorship of the Scala 2 team’s efforts. Lightbend offers commercial support for Scala.

Scala 2.13 notes

The release notes for Scala 2.13.0 have important information applicable to the whole 2.13 series.

Obtaining Scala

Scala releases are available through a variety of channels, including (but not limited to):

  • Bump the scalaVersion setting in your sbt project
  • Bump the using scala setting in your Scala-CLI project
  • Download a distribution from scala-lang.org
  • Obtain JARs via Maven Central
Assets 2