Improve build (fix warnings and javadoc)

CHANGES.md

@@ -15,6 +15,7 @@ We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (
 * We now use [javadoc.io](https://javadoc.io/) instead of github pages. ([#508](https://github.com/diffplug/spotless/pull/508))
 * We no longer publish `-SNAPSHOT` for every build to `master`, since we have good [JitPack integration](https://github.com/diffplug/spotless/blob/master/CONTRIBUTING.md#gradle---any-commit-in-a-public-github-repo-this-one-or-any-fork). ([#508](https://github.com/diffplug/spotless/pull/508))
 * Improved how we use Spotless on itself. ([#509](https://github.com/diffplug/spotless/pull/509))
+* Fix build warnings when building on Gradle 6+, bump build gradle to 6.2.2, and fix javadoc links. ([#536](https://github.com/diffplug/spotless/pull/536))
 
 ## [1.27.0] - 2020-01-01
 * Ignored `KtLintStepTest`, because [gradle/gradle#11752](https://github.com/gradle/gradle/issues/11752) is causing too many CI failures. ([#499](https://github.com/diffplug/spotless/pull/499))

build.gradle

@@ -6,7 +6,7 @@ plugins {
 	// https://github.com/bintray/gradle-bintray-plugin/releases
 	id 'com.jfrog.bintray' version '1.8.4' apply false
 	// https://github.com/mnlipp/jdrupes-mdoclet/releases
-	id 'org.jdrupes.mdoclet' version '1.0.5' apply false
+	id 'org.jdrupes.mdoclet' version '1.0.9' apply false
 	// https://github.com/spotbugs/spotbugs/releases
 	id "com.github.spotbugs" version "2.0.0" apply false
 	//https://github.com/diffplug/goomph

gradle/java-publish.gradle

@@ -22,7 +22,6 @@ def makeLink = { url, text -> "<a href=\"${url}\" style=\"text-transform: none;\
 def javadocInfo = '<h2>' + makeLink("https://github.com/${org}/${name}", "${group}:${project.ext.artifactId}:${version}") +
 		' by ' + makeLink('https://www.diffplug.com', 'DiffPlug') + '</h2>'
 
-String version_str = version.endsWith('-SNAPSHOT') ? 'snapshot' : version
 apply plugin: 'org.jdrupes.mdoclet'
 javadoc {
 	// Where it's possible to name parameters and methods clearly enough
@@ -38,8 +37,8 @@ javadoc {
 	options.linksOffline('https://docs.gradle.org/2.14/javadoc/', '../gradle/javadoc/gradle')
 
 	// links to javadoc from the other versions
-	options.linksOffline("https://diffplug.github.io/spotless/javadoc/${project.artifactIdLib}/${version_str}/", "../gradle/javadoc/${project.artifactIdLib}")
-	options.linksOffline("https://diffplug.github.io/spotless/javadoc/${project.artifactIdLibExtra}/${version_str}/", "../gradle/javadoc/${project.artifactIdLibExtra}")
+	options.linksOffline("https://javadoc.io/static/com.diffplug.spotless/spotless-lib/${rootProject.spotlessChangelog.versionLast}", "../gradle/javadoc/spotless-lib")
+	options.linksOffline("https://javadoc.io/static/com.diffplug.spotless/spotless-lib-extra/${rootProject.spotlessChangelog.versionLast}", "../gradle/javadoc/spotless-lib-extra")
 }
 
 task javadocJar(type: Jar, dependsOn: javadoc) {

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.0.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.2.2-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradlew

@@ -154,19 +154,19 @@ if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
         else
             eval `echo args$i`="\"$arg\""
         fi
-        i=$((i+1))
+        i=`expr $i + 1`
     done
     case $i in
-        (0) set -- ;;
-        (1) set -- "$args0" ;;
-        (2) set -- "$args0" "$args1" ;;
-        (3) set -- "$args0" "$args1" "$args2" ;;
-        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
-        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
-        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
-        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
-        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
-        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
     esac
 fi
 
@@ -175,14 +175,9 @@ save () {
     for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
     echo " "
 }
-APP_ARGS=$(save "$@")
+APP_ARGS=`save "$@"`
 
 # Collect all arguments for the java command, following the shell quoting and substitution rules
 eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
 
-# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
-if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
-  cd "$(dirname "$0")"
-fi
-
 exec "$JAVACMD" "$@"