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1.2.0

28 Feb 17:58
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1.2.0

🆕 Features

WARNING: The new rules have accidentally not been marked as experimental. This will be fixed in a bugfix!

  • Break dependency between string-template-indent and multiline-expression-wrapping - #2505, by @paul-dingemans

  • Allow string template to exceed max line length when it is the only element on a line - #2480, by @paul-dingemans

  • Add configuration setting for ignoring argument-list-wrapping above treshold of argument - #2481, by @paul-dingemans
    NOTE: In code style ktlint_official this threshold is unset so that arguments are always wrapped. If this impacts your code too much, you can make it backward compatible by setting .editorconfig property ktlint_argument_list_wrapping_ignore_when_parameter_count_greater_or_equal_than to value 8. For other code styles this property is initialized with value 8 and as of that backward compatible by default.

  • Ignore EOL comment that causes max_line_length to be exceeded, except in max-line-length rule - #2516, by @paul-dingemans

  • Add new rule for disallowing KDoc at non-whitelisted locations - #2548, by @paul-dingemans

  • Improve insert of suppression - #2546, by @paul-dingemans

  • Ignore modifier of backing property in android_studio code style - #2552, by @paul-dingemans

  • Add rule to check spacing around square brackets 'square-brackets-spacing' - #2555, by @paul-dingemans

  • Add rule blank-line-between-when-conditions - #2564, by @paul-dingemans

🔧 Fixes

📦 Dependencies

  • chore(deps): update plugin org.gradle.toolchains.foojay-resolver-convention to v0.8.0 - #2503, by @renovate[bot]

  • fix(deps): update dependency io.github.oshai:kotlin-logging-jvm to v6 - #2440, by @renovate[bot]

  • Replace gradle/gradle-build-action@v3 with gradle/actions/setup-gradle@v3 - #2518, by @paul-dingemans

  • chore(deps): update plugin kotlinx-binary-compatibiltiy-validator to v0.14.0 - #2522, by @renovate[bot]

  • chore(deps): update gradle/wrapper-validation-action action to v2 - #2523, by @renovate[bot]

  • chore(deps): update ffurrer2/extract-release-notes action to v2 - #2515, by @renovate[bot]

  • chore(deps): update dependency gradle to v8.6 - #2531, by @renovate[bot]

  • fix(deps): update dependency org.assertj:assertj-core to v3.25.3 - #2536, by @renovate[bot]

  • fix(deps): update dependency org.junit.jupiter:junit-jupiter to v5.10.2 - #2534, by @renovate[bot]

  • fix(deps): update dependency org.slf4j:slf4j-simple to v2.0.12 - #2538, by @renovate[bot]

  • fix(deps): update dependency org.codehaus.janino:janino to v3.1.12 - #2559, by @renovate[bot]

💬 Other

Contributors

renovate, paul-dingemans, and Goooler
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1.1.1

08 Jan 18:08
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1.1.1

🆕 Features

None

🔧 Fixes

📦 Dependencies

  • fix(deps): update kotlin monorepo to v1.9.22 - #2456, by @renovate[bot]

  • chore(deps): update actions/setup-python action to v5 - #2417, by @renovate[bot]

  • fix(deps): update dependency org.slf4j:slf4j-simple to v2.0.10 - #2470, by @renovate[bot]

  • fix(deps): update dependency dev.drewhamilton.poko:poko-gradle-plugin to v0.15.2 - #2485, by @renovate[bot]

  • fix(deps): update dependency org.assertj:assertj-core to v3.25.1 - #2486, by @renovate[bot]

Contributors

renovate, paul-dingemans, and stay7
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1.1.0

19 Dec 12:03
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1.1.0

🆕 Features

🔧 Fixes

📦 Dependencies

  • fix(deps): update dependency org.jetbrains.dokka:dokka-gradle-plugin to v1.9.10 - #2323, by @renovate[bot]

  • fix(deps): update dependency org.junit.jupiter:junit-jupiter to v5.10.1 - #2342, by @renovate[bot]

  • fix(deps): update kotlin monorepo to v1.9.21 - #2374, by @renovate[bot]

  • fix(deps): update dependency org.codehaus.janino:janino to v3.1.11 - #2387, by @renovate[bot]

  • fix(deps): update dependency dev.drewhamilton.poko:poko-gradle-plugin to v0.15.1 - #2389, by @renovate[bot]

  • chore(deps): update dependency gradle to v8.5 - #2392, by @renovate[bot]

  • chore(deps): update actions/checkout digest to b4ffde6 - #2329, by @renovate[bot]

  • chore(deps): update actions/setup-java action to v4 - #2393, by @renovate[bot]

  • fix(deps): update dependency ch.qos.logback:logback-classic to v1.3.14 - #2406, by @renovate[bot]

  • fix(deps): update dependency io.github.hakky54:logcaptor to v2.9.2 - #2409, by @renovate[bot]

  • fix(deps): update dependency io.github.oshai:kotlin-logging-jvm to v5.1.4 - #2439, by @renovate[bot]

Contributors

guicamest, renovate, and 6 other contributors
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1.0.1

13 Oct 12:25
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1.0.1

🆕 Features

  • Add .editorconfig property ktlint_function_naming_ignore_when_annotated_with so that rule function-naming can be ignored based on annotations on that rule. See function-naming.

🔧 Fixes

📦 Dependencies

  • Update dependency io.github.detekt.sarif4k:sarif4k to v0.5.0 - #2277, by @renovate[bot]

  • Update dependency gradle to v8.4 - #2294, by @renovate[bot]

  • Update actions/checkout action to v4 - #2225, by @renovate[bot]

  • Update actions/checkout digest to 8ade135 - #2295, by @renovate[bot]

💬 Other

Contributors

renovate, paul-dingemans, and Goooler
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1.0.0

05 Sep 14:01
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1.0.0
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1.0.0

💔 Breaking changes

  • Update and align Maven coordinates - #2195, by @paul-dingemans
    Be sure to update Maven coordinates below, to get latest changes!

    Old Maven coordinates New Maven coordinates
    com.pinterest:ktlint com.pinterest.ktlint:ktlint-cli
    com.pinterest.ktlint:ktlint-reporter-baseline com.pinterest.ktlint:ktlint-cli-reporter-baseline
    com.pinterest.ktlint:ktlint-reporter-checkstyle com.pinterest.ktlint:ktlint-cli-reporter-checkstyle
    com.pinterest.ktlint:ktlint-cli-reporter com.pinterest.ktlint:ktlint-cli-reporter-core
    com.pinterest.ktlint:ktlint-reporter-format com.pinterest.ktlint:ktlint-cli-reporter-format
    com.pinterest.ktlint:ktlint-reporter-html com.pinterest.ktlint:ktlint-cli-reporter-html
    com.pinterest.ktlint:ktlint-reporter-json com.pinterest.ktlint:ktlint-cli-reporter-json
    com.pinterest.ktlint:ktlint-reporter-plain com.pinterest.ktlint:ktlint-cli-reporter-plain
    com.pinterest.ktlint:ktlint-reporter-plain-summary com.pinterest.ktlint:ktlint-cli-reporter-plain-summary
    com.pinterest.ktlint:ktlint-reporter-sarif com.pinterest.ktlint:ktlint-cli-reporter-sarif

  • Add binary compatibility validator - #2131, by @mateuszkwiecinski

  • Replace kotlin public data classes with Poko compiler plugin generated ones - #2136, by @mateuszkwiecinski
    As a part of public API stabilization, data classes are no longer used in the public API. As of that, functions like copy() or componentN() (used for destructuring declarations) are not available anymore.

  • Promote experimental rules - #2218, by @paul-dingemans
    The rules below have been promoted to non-experimental rules:

  • Fix statement-wrapping and align rule classes - #2178, by @paul-dingemans
    Rule class MultilineExpressionWrapping has been renamed to MultilineExpressionWrappingRule. Rule class StatementWrapping has been renamed to StatementWrappingRule. RULE_ID constants below are moved to a different Java class at compile time. Each rule provided by Ktlint is to be accompanied by a RULE_ID constant that can be used in the VisitorModifier.RunAfter. Filenames did not comply with standard that it should end with Rule suffix.

    RULE ID Old Java class name New Java class name
    FUNCTION_EXPRESSION_BODY_RULE_ID FunctionExpressionBodyKt FunctionExpressionBodyRuleKt
    FUNCTION_LITERAL_RULE_ID FunctionLiteralKt FunctionLiteralRuleKt
    MULTILINE_EXPRESSION_WRAPPING_RULE_ID MultilineExpressionWrappingKt MultilineExpressionWrappingRuleKt
    NO_BLANK_LINE_IN_LIST_RULE_ID NoBlankLineInListKt NoBlankLineInListRuleKt
    NO_EMPTY_FILE_RULE_ID (not applicable) NoEmptyFileRuleKt

  • Update to Kotlin 1.9 & remove TreeCopyHandler extension - #2113, by @paul-dingemans
    Class org.jetbrains.kotlin.com.intellij.treeCopyHandler is no longer registered as extension point for the compiler as this is not supported in Kotlin 1.9. Please test your custom rules. In case of unexpected exceptions during formatting of code, see #2044 for possible remediation.

🆕 Features

  • Change default code style to ktlint_official - #2144, by @paul-dingemans

  • Add new experimental rule class-signature - #2119, by @paul-dingemans

  • Add new experimental rule function-expression-body - #2151, by @paul-dingemans

  • Add new experimental rule chain-method-continuation - #2088, by @atulgpt

  • Add new experimental rule function-literal - #2137, by @paul-dingemans

  • Add new experimental rule function-type-modifier-spacing rule - #2216, by @t-kameyama

  • Define EditorConfigOverride for dynamically loaded ruleset - #2194, by @paul-dingemans
    The EditorConfigOverride parameter of the KtlintRuleEngine can be defined using the factory method EditorConfigOverride.from(vararg properties: Pair<EditorConfigProperty<*>, *>). This requires the EditorConfigProperty's to be available at compile time. Some common EditorConfigProperty's are defined in ktlint-rule-engine-core which is loaded as transitive dependency of ktlint-rule-engine and as of that are available at compile.
    If an EditorConfigProperty is defined in a Rule that is only provided via a runtime dependency, it gets a bit more complicated. The ktlint-api-consumer example has now been updated to show how the EditorConfigProperty can be retrieved from the Rule.

  • Move wrapping on semicolon from wrapping rule to statement-wrapping rule - #2222, by @paul-dingemans

🔧 Fixes

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Contributors

t-kameyama, renovate, and 4 other contributors
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0.50.0

29 Jun 20:16
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0.50.0

Deprecation of ktlint-enable and ktlint-disable directives

The ktlint-disable and ktlint-enable directives are no longer supported. Ktlint rules can now only be suppressed using the @Suppress or @SuppressWarnings annotations. A new rule, internal:ktlint-suppression, is provided to replace the directives with annotations.

API consumers do not need to provide this rule, but it does no harm when done.

The internal:ktlint-suppression rule can not be disabled via the .editorconfig nor via @Suppress or @SuppressWarnings annotations.

Custom Rule Providers need to prepare for Kotlin 1.9

In Kotlin 1.9 the extension points of the embedded kotlin compiler will change. Ktlint only uses the org.jetbrains.kotlin.com.intellij.treeCopyHandler extension point. This extension is not yet supported in 1.9, neither is it documented (#KT-58704). Without this extension point it might happen that your custom rules will throw exceptions during runtime. See #1981.

In Ktlint, 7 out of 77 rules needed small and sometimes bigger changes to become independent of the extension point org.jetbrains.kotlin.com.intellij.treeCopyHandler. The impact on your custom rules may vary dependent on the way the autocorrect has been implemented. When manipulating ASTNodes there seems to be no impact. When, manipulating PsiElements, some functions consistently result in a runtime exception.

Based on the refactoring of the rules as provided by ktlint-ruleset-standard in Ktlint 0.49.x the suggested refactoring is as follows:

  • Replace LeafElement.replaceWithText(String) with LeafElement.rawReplaceWithText(String).
  • Replace PsiElement.addAfter(PsiElement, PsiElement) with AstNode.addChild(AstNode, AstNode). Note that this method inserts the new node (first) argument before the second argument node and as of that is not a simple replacement of the PsiElement.addAfter(PsiElement, PsiElement).
  • Replace PsiElement.replace(PsiElement) with a sequence of AstNode.addChild(AstNode, AstNode) and AstNode.removeChild(AstNode).

Be aware that your custom rules might use other functions which also throw exceptions when the extension point org.jetbrains.kotlin.com.intellij.treeCopyHandler is no longer supported.

In order to help you to analyse and fix the problems with your custom rules, ktlint temporarily supports to disable the extension point org.jetbrains.kotlin.com.intellij.treeCopyHandler using a flag. This flag is available in the Ktlint CLI and in the KtlintRuleEngine. By default, the extension point is enabled like it was in previous versions of ktlint.

At least you should analyse the problems by running your test suits by running ktlint and disabling the extension point. Next you can start with fixing and releasing the updated rules. All rules in this version of ktlint have already been refactored and are not dependent on the extension point anymore. In Ktlint CLI the flag is to be activated with parameter --disable-kotlin-extension-point. API Consumers that use the KtlintRuleEngine directly, have to set property enableKotlinCompilerExtensionPoint to false.

At this point in time, it is not yet decided what the next steps will be. Ktlint might drop the support of the extension points entirely. Or, if the extension point org.jetbrains.kotlin.com.intellij.treeCopyHandler is fully supported at the time that ktlint will be based on kotlin 1.9 it might be kept. In either case, the flag will be dropped in a next version of ktlint.

Added

  • Add new experimental rule binary-expression-wrapping. This rule wraps a binary expression in case the max line length is exceeded (#1940)
  • Add flag to disable extension point org.jetbrains.kotlin.com.intellij.treeCopyHandler to analyse impact on custom rules #1981
  • Add new experimental rule no-empty-file for all code styles. A kotlin (script) file may not be empty (#1074)
  • Add new experimental rule statement-wrapping which ensures function, class, or other blocks statement body doesn't start or end at starting or ending braces of the block (#1938)
  • Add new experimental rule blank-line-before-declaration. This rule requires a blank line before class, function or property declarations (#1939)
  • Wrap multiple statements on same line wrapping (#1078)
  • Add new rule ktlint-suppression to replace the ktlint-disable and ktlint-enable directives with annotations. This rule can not be disabled via the .editorconfig (#1947)
  • Inform user about using --format option of KtLint CLI when finding a violation that can be autocorrected (#1071)

Removed

  • Code which was deprecated in 0.49.x is removed. Consult changelog of 0.49.x` released for more information. Summary of removed code:

Fixed

  • Do not flag a (potential) mutable extension property in case the getter is annotated or prefixed with a modifier property-naming (#2024)
  • Do not merge an annotated expression body with the function signature even if it fits on a single line (#2043)
  • Ignore property with name serialVersionUID in property-naming (#2045)
  • Prevent incorrect reporting of violations in case a nullable function type reference exceeds the maximum line length parameter-list-wrapping (#1324)
  • Prevent false negative on else branch when body contains only chained calls or binary expression (#2057)
  • Fix indent when property value is wrapped to next line (#2095)

Changed

  • Fix Java interoperability issues with RuleId and RuleSetId classes. Those classes were defined as value classes in 0.49.0 and 0.49.1. Although the classes were marked with @JvmInline it seems that it is not possible to uses those classes from Java base API Consumers like Spotless. The classes have now been replaced with data classes (#2041)
  • Update dependency info.picocli:picocli to v4.7.4
  • Update dependency org.junit.jupiter:junit-jupiter to v5.9.3
  • Update Kotlin development version to 1.8.22 and Kotlin version to 1.8.22.
  • Update dependency io.github.detekt.sarif4k:sarif4k to v0.4.0
  • Update dependency org.jetbrains.dokka:dokka-gradle-plugin to v1.8.20
  • Run format up to 3 times in case formatting introduces changes which also can be autocorrected (#2084)
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0.49.1

12 May 20:03
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0.49.1

Added

Removed

Fixed

  • Store path of file containing a lint violation relative to the location of the baseline file itself (#1962)
  • Print absolute path of file in lint violations when flag "--relative" is not specified in Ktlint CLI (#1963)
  • Handle parameter --code-style=android_studio in Ktlint CLI identical to deprecated parameter --android (#1982)
  • Prevent nullpointer exception (NPE) if class without body is followed by multiple blank lines until end of file no-consecutive-blank-lines (#1987)
  • Allow to 'unset' the .editorconfig property ktlint_function_signature_rule_force_multiline_when_parameter_count_greater_or_equal_than when using ktlint_official code style function-signature (#1977)
  • Prevent nullpointer exception (NPE) if or operator at start of line is followed by dot qualified expression indent (#1993)
  • Fix indentation of multiline parameter list in function literal indent (#1976)
  • Restrict indentation of closing quotes to ktlint_official code style to keep formatting of other code styles consistent with 0.48.x and before indent (#1971)
  • Extract rule no-single-line-block-comment from comment-wrapping rule. The no-single-line-block-comment rule is added as experimental rule to the ktlint_official code style, but it can be enabled explicitly for the other code styles as well. (#1980)
  • Clean-up unwanted logging dependencies (#1998)
  • Fix directory traversal for patterns referring to paths outside of current working directory or any of it child directories (#2002)

Changed

  • Moved class Baseline from ktlint-cli to ktlint-cli-reporter-baseline so that Baseline functionality is reusable for API Consumers.
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0.49.0

21 Apr 15:27
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0.49.0

WARNING: This version of KtLint contains a number of breaking changes in KtLint CLI and KtLint API. If you are using KtLint with custom ruleset jars or custom reporter jars, then those need to be upgraded before you can use them with this version of ktlint. Please contact the maintainers of those jars and ask them to upgrade a.s.a.p.

All rule id's in the output of Ktlint are now prefixed with a rule set. Although KtLint currently supports standard rules to be unqualified, users are encouraged to include the rule set id in all references to rules. This includes following:

  • The --disabled-rules parameter in KtLint CLI.
  • The .editorconfig properties used to enable or disable rule and rule sets. Note that properties disabled_rules and ktlint_disabled_rules have been removed in this release. See disabled rules for more information.
  • The source element in the KtLint CLI baseline.xml file. Regenerating this file, fixes all rule references automatically.
  • The KtLint disable directives ktlint-enable / ktlint-disable and the @Suppress('ktlint:...') annotations.
  • The VisitorModifier.RunAfterRule.

Moving experimental rules to standard rule set

The experimental rule set has been merged with standard rule set. The rules which formerly were part of the experimental rule set are still being treated as before. The rules will only be run in case .editorconfig property ktlint_experimental is enabled or in case the rule is explicitly enabled.

Note that the prefix experimental: has to be removed from all references to this rule. Check references in:

  • The --disabled-rules parameter in KtLint CLI.
  • The .editorconfig properties used to enable or disable rule and rule sets. Note that properties disabled_rules and ktlint_disabled_rules have been removed in this release. See disabled rules for more information.
  • The KtLint disable directives ktlint-enable / ktlint-disable and the @Suppress('ktlint:...') annotations.
  • The VisitorModifier.RunAfterRule.

Promote experimental rules to non-experimental

The rules below have been promoted to non-experimental rules:

Note that this only affects users that have enabled the standard ruleset while having the experimental rules disabled.

API Changes & RuleSet providers & Reporter Providers

This release is intended to be the last release before the 1.0.x release of ktlint. If all goes as planned, the 1.0.x release does not contain any new breaking changes with except of removal of functionality which is deprecated in this release.

This release contains a lot of breaking changes which aims to improve the future maintainability of Ktlint. If you get stuck while migrating, please reach out to us by creating an issue.

Experimental rules

Rules in custom rule sets can now be marked as experimental by implementing the Rule.Experimental interface on the rule. Rules marked with this interface will only be executed by Ktlint if .editorconfig property ktlint_experimental is enabled or if the rule itself has been enabled explicitly.

When using this feature, experimental rules should not be defined in a separate rule set as that would require a distinct rule set id. When moving a rule from an experimental rule set to a non-experimental rule set this would mean that the qualified rule id changes. For users of such rules this means that ktlint directives to suppress the rule and properties in the .editorconfig files have to be changed.

EditorConfig

Field defaultAndroidValue in class EditorConfigProperty has been renamed to androidStudioCodeStyleDefaultValue. New fields ktlintOfficialCodeStyleDefaultValue and intellijIdeaCodeStyleDefaultValue have been added. Read more about this in the section "Ktlint Official code style".

The .editorconfig properties disabled_rules and ktlint_disabled_rules are no longer supported. Specifying those properties in the editorConfigOverride or editorConfigDefaults result in warnings at runtime.

'Ktlint Official` code style and renaming of existing code styles

A new code style ktlint_official is introduced. This code style is work in progress but will become the default code style in the 1.0 release. Please try out the new code style and provide your feedback via the issue tracker.

This ktlint_official code style combines the best elements from the Kotlin Coding conventions and Android's Kotlin styleguide. This code style also provides additional formatting on topics which are not (explicitly) mentioned in those conventions and style guide. But do note that this code style sometimes formats code in a way which is not accepted by the default code formatters in IntelliJ IDEA and Android Studio. The formatters of those editors produce nicely formatted code in the vast majority of cases. But in a number of edge cases, the formatting contains bugs which are waiting to be fixed for several years. The new code style formats code in a way which is compatible with the default formatting of the editors whenever possible. When using this codestyle, it is best to disable (e.g. not use) code formatting in the editor.

The existing code styles have been renamed to make more clear what the basis of the code style is.

The official code style has been renamed to intellij_idea. Code formatted with this code style aims to be compatible with default formatter of IntelliJ IDEA. This code style is based on Kotlin Coding conventions. If .editorconfig property ktlint_code_style has been set to android then do not forget to change the value of that property to intellij_idea. When not set, this is still the default code style of ktlint 0.49. Note that the default code style will be changed to ktlint_official in the 1.0 release.

Code style android has been renamed to android_studio. Code formatted with this code style aims to be compatible with default formatter of Android Studio. This code style is based on Android's Kotlin styleguide. If .editorconfig property ktlint_code_style has been set to android then do not forget to change the value of that property to android_studio.

Package restructuring and class relocation

The internal structure of the Ktlint project has been revised. The Ktlint CLI and KtLint API modules have been decoupled where possible. Modules have been restructured and renamed. See API Overview for more information.

This is the last release that contains module ktlint-core as it had too many responsibilities. All classes in this module are relocated to other modules. Some classes have also been renamed. See tables below for details. Classes that are left behind in the ktlint-core module are deprecated and were kept in this version for backwards compatibility only. The ktlint-core module will be removed in Ktlint 0.50.x.

Classes below have been moved from module ktlint-core to the new module ktlint-rule-engine-core:

Old class/package name in ktlint-core New class/package name in ktlint-rule-engine-core
com.pinterest.ktlint.core.api.editorconfig com.pinterest.ktlint.rule.engine.core.api.editorconfig
com.pinterest.ktlint.core.api.EditorConfigProperties com.pinterest.ktlint.rule.engine.core.api.EditorConfig
com.pinterest.ktlint.core.api.OptInFeatures com.pinterest.ktlint.rule.engine.core.api.OptInFeatures
com.pinterest.ktlint.core.ast.ElementType com.pinterest.ktlint.rule.engine.core.api.ElementType
com.pinterest.ktlint.core.ast.package com.pinterest.ktlint.rule.engine.core.api.ASTNodeExtension
com.pinterest.ktlint.core.IndentConfig com.pinterest.ktlint.rule.engine.core.api.IndentConfig
com.pinterest.ktlint.core.Rule ...
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0.48.2

23 Jan 20:30
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0.48.2

Additional clarification on API Changes in 0.48.0 and 0.48.1

Starting with Ktlint 0.48.x, rule and rule sets can be enabled/disabled with a separate property per rule (set). Please read deprecation of (ktlint_)disable_rules property for more information.

API Consumers that provide experimental rules to the KtLintRuleEngine, must also enable the experimental rules or instruct their users to do so in the .editorconfig file. From the perspective of the API Consumer it might be confusing or unnecessary to do so as the experimental rule was already provided explicitly.

Ktlint wants to provide the user (e.g. a developer) a uniform and consistent user experience. The .editorconfig becomes more and more central to store configuration for Ktlint. This to ensure that all team members use the exact same configuration when running ktlint regardless whether the Ktlint CLI or an API Consumer is being used.

The .editorconfig is a powerful configuration tool which can be used in very different ways. Most projects use a single .editorconfig file containing one common section for kotlin and kotlin scripts files. For example, the .editorconfig file of the Ktlint project contains following section:

[*.{kt,kts}]
ij_kotlin_imports_layout = *
ij_kotlin_allow_trailing_comma = true
ij_kotlin_allow_trailing_comma_on_call_site = true

Other projects might contain multiple .editorconfig files for different parts of the project directory hierarchy. Or, use a single .editorconfig file containing multiple sections with different globs. Like all other configuration settings in Ktlint, the user should be able to enable and disable the experimental rules. Both for the entire set of experimental rules and for individual experimental rules.

Ktlint allows API Consumers to set default values and override values for the .editorconfig. Specifying a default value means that the user does not need to define the property in the .editorconfig file but if the user specifies the value, it will take precedence. Specifying the override value ensures that this takes precedence on a value specified by the user in the .editorconfig.

From the Ktlint perspective, it is advised that API Consumers provide the default value. See example below, for how to specify the editorConfigDefault property:

KtLintRuleEngine(
    ruleProviders = ruleProviders,
    editorConfigDefaults = EditorConfigDefaults(
        EditorConfig
            .builder()
            .section(
                Section
                    .builder()
                    .glob(Glob("*.{kt,kts}"))
                    .properties(
                        Property
                            .builder()
                            .name("ktlint_experimental")
                            .value("enabled"),
                    ),
            )
            .build()
    )
)

If the user has set property ktlint_experimental explicitly than that value will be used. If the value is not defined, the value provided via editorConfigDefaults will be used.

If you do want to ignore the value of ktlint_experimental as set by the user, than you can set the EditorConfigOverride property. But as said before that is discouraged as the user might not understand why the .editorconfig property is being ignored (provided that the value set is not equal to the value provided by the API Consumer).

Added

Removed

Fixed

  • Fix with array-syntax annotations on the same line as other annotations annotation (#1765)
  • Do not enable the experimental rules by default when .editorconfig properties disabled_rules or ktlint_disabled_rules are set. (#1771)
  • A function signature not having any parameters which exceeds the max-line-length should be ignored by rule function-signature (#1773)
  • Allow diacritics in names of classes, functions packages, and properties class-naming, function-naming, package-name, property-naming (#1757)
  • Prevent violation of file-name rule on code snippets (#1768)
  • Clarify that API Consumers have to enable experimental rules (#1768)
  • Trim spaces in the .editorconfig property ij_kotlin_imports_layout's entries (#1770)

Changed

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0.48.1

03 Jan 18:23
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0.48.1
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0.48.1

Added

Removed

Fixed

  • An enumeration class having a primary constructor and in which the list of enum entries is followed by a semicolon then do not remove the semicolon in case it is followed by code element no-semi (#1733)
  • Add API so that KtLint API consumer is able to process a Kotlin script snippet without having to specify a file path (#1738)
  • Disable the standard:filename rule whenever Ktlint CLI is run with option --stdin (#1742)
  • Fix initialization of the logger when --log-level is specified. Throw exception when an invalid value is passed. (#1749)
  • Fix loading of custom rule set JARs.
  • Rules provided via a custom rule set JAR (Ktlint CLI) or by an API provider are enabled by default. Only rules in the experimental rule set are disabled by default. (#1747)

Changed

  • Update Kotlin development version to 1.8.0 and Kotlin version to 1.8.0.
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