v0.12.0

Significant changes since v0.11.1

For users

• Better Scala 3 support
  • OrganizeImports.removeUnused & RemoveUnused (with a known limitation for unused function parameters) are now supported with Scala 3.4+
  • New flag OrganizeImports.targetDialect to control wildcard/rename syntax & curly braces stripping behavior (see documentation)
  • LambdaType and MatchType are now fully supported
• JDK21 is now fully supported
• Script files (.sc) are now supported

For rule authors

• Scalameta was bumped from 4.8.10 to 4.9.1, bringing many bugfixes and a few features, as well as some behavioral changes breaking backward compatibility
  • Term.Interpolate now always capture curly braces through a wrapping Term.Block when parsed with scalafix 0.12.x (scalameta/scalameta#3594)
    • This may trigger false negatives for rules tested against 0.11.1 or earlier, which do not expect that Term.Block
    • Such rules must be updated to work with Scalafix 0.12.x, ideally with logic handling both presence and absence of Term.Block to preserve compatibility with earlier Scalafix versions
  • tree.pos == Position.None is no longer a reliable way to check whether a given tree comes from the input document, since trees built via quasiquotes with scalafix 0.12.x may now have positions (scalameta/scalameta#3450)
    • To avoid false negatives on Scalafix 0.12.x, check equality on tree.origin, ideally combining this check with the previous predicate to preserve compatibility with earlier Scalafix versions
• scalafix-testkit is now published for Scala 2.12.19 & Scala 2.13.13
  • Usage of API methods decorated via implicits trigger new fatal warnings for rules built with -Xsource:3 (#1949)

Pull Requests

Rules

• Support OrganizeImports.removeUnused in Scala 3.4+ (#1800) @tanishiking
• OrganizeImports: don't leak state from one fix execution to another (#1921) @bjaglin
• Support RemoveUnused in Scala 3.4+ (#1728) @bjaglin
• OrganizeImports.targetDialect: wildcard/rename syntax & curly braces stripping (#1896) @bjaglin
• RedundantSyntax: distinguish single and triple quotes (#1851) @bjaglin

Framework

• support -Xsource:3-cross introduced in Scala 2.13.13 (#1943) @bjaglin
• Support LambdaType and MatchType (#1801) @mrdziuban
• run RemoveUnused (#1922) @bjaglin
• avoid flood of unused compiler warnings (#1920) @bjaglin
• run windows CI with latest LTS JDK21 (#1919) @bjaglin
• run scalafix on Scala 3 sources (#1918) @bjaglin
• improvement: Support script files (#1901) @tgodzik
• Add isAtomic to ScalafixPatch interface (#1892) @LaurenceWarne
• rules capturing leading tokens can be suppressed with scalafix:ok (#1890) @bjaglin
• better support of backquoted identifiers in SymbolMatcher (#1888) @bjaglin
• add support for -Xsource:3 testkit input & output (#1666) @bjaglin

Docs

• remove obsolete docs about cross-publishing rules (#1939) @bjaglin
• advertize hamnis/dataclass-scalafix (#1938) @bjaglin
• document new ability to customize ScalafixInterface at project-level (#1907) @bjaglin
• Suggest using the OrganizeImports rule on the ExplicitResultTypes page (#1911) @danicheg
• Add description to the OrganizeImports rule (#1897) @marcelocenerine

Updates

• Update scalameta to 4.9.1 (#1950) @scala-center-steward
• Update sbt-scoverage to 2.0.11 (#1948) @scala-center-steward
• Update scalafmt-core to 3.8.0 (#1947) @scala-center-steward
• Update sbt to 1.9.9 (#1946) @scala-center-steward
• Scalameta 4.9.1-RC1 (#1945) @bjaglin
• Bump all Scala versions (2.12.19, 2.13.13, 3.4.0) (#1932) @bjaglin
• Bump VirtusLab/scala-cli-setup from 1.1.2 to 1.1.3 (#1934) @dependabot
• scalameta 4.9.x (#1927) @bjaglin
• Update sbt-scoverage to 2.0.10 (#1931) @scala-center-steward
• Update scalatest to 3.2.18 (#1930) @scala-center-steward
• Update coursier to 2.1.9 (#1928) @scala-center-steward
• Update sbt-version-policy to 3.2.0 (#1902) @scala-center-steward
• Bump release-drafter/release-drafter from 5 to 6 (#1923) @dependabot
• Bump VirtusLab/scala-cli-setup from 1.1.1 to 1.1.2 (#1917) @dependabot
• Update sbt-projectmatrix to 0.9.2 (#1913) @scala-center-steward
• Update org.eclipse.jgit to 5.13.3.202401111512-r (#1914) @scala-center-steward
• Update mdoc, sbt-mdoc to 2.5.2 (#1915) @scala-center-steward
• Bump VirtusLab/scala-cli-setup from 1.1.0 to 1.1.1 (#1916) @dependabot
• Update scalameta to 4.8.15 (#1909) @scala-center-steward
• Update scalafmt-core to 3.7.17 (#1906) @scala-center-steward
• Update mdoc, sbt-mdoc to 2.5.1 (#1905) @scala-center-steward
• Update sbt to 1.9.8 (#1904) @scala-center-steward
• Update coursier to 2.1.8 (#1903) @scala-center-steward
• Update scalameta to 4.8.14 (#1899) @scala-center-steward
• Bump VirtusLab/scala-cli-setup from 1.0.6 to 1.1.0 (#1898) @dependabot
• Bump VirtusLab/scala-cli-setup from 1.0.5 to 1.0.6 (#1893) @dependabot
• full support for JDK21 via scalameta 4.8.13 (#1810) @bjaglin
• Update scalafmt-core to 3.7.15 (#1886) @scala-center-steward
• Update sbt to 1.9.7 (#1885) @scala-center-steward
• Update commons-text to 1.11.0 (#1884) @scala-center-steward
• Bump VirtusLab/scala-cli-setup from 1.0.4 to 1.0.5 (#1883) @dependabot
• Update metaconfig-docs, ... to 0.12.0 (#1877) @scala-center-steward
• Update scalameta to 4.8.12 (#1879) @scala-center-steward
• Update scalameta, semanticdb-scalac-core, ... to 4.8.11 (#1872) @scala-center-steward
• Update interface to 1.0.19 (#1875) @scala-center-steward
• Update mdoc, sbt-mdoc to 2.3.8 (#1878) @scala-center-steward
• Update sbt to 1.9.6 (#1876) @scala-center-steward
• Update sbt-scoverage to 2.0.9 (#1871) @scala-center-steward
• Update scalatest to 3.2.17 (#1870) @scala-center-steward
• Update coursier to 2.1.7 (#1868) @scala-center-steward
• Update scalafmt-core to 3.7.14 (#1869) @scala-center-steward
• Bump actions/checkout from 3 to 4 (#1867) @dependabot
• Post 0.11.1 release (#1866) @bjaglin