Configure scalafmt for docs

.scalafmt.conf

@@ -1,3 +1,4 @@
+# Keep in sync with docs/.scalafmt.conf
 align = true
 assumeStandardLibraryStripMargin = true
 danglingParentheses = true

docs/build.sbt

@@ -7,30 +7,34 @@ lazy val docs = project
     // use special snapshot play version for now
     resolvers ++= DefaultOptions.resolvers(snapshot = true),
     resolvers += Resolver.typesafeRepo("releases"),
-    libraryDependencies += component("play-test") % "test",
+    libraryDependencies += component("play-test")   % "test",
     libraryDependencies += component("play-specs2") % "test",
     PlayDocsKeys.javaManualSourceDirectories := (baseDirectory.value / "manual" / "working" / "javaGuide" ** "code").get,
     PlayDocsKeys.scalaManualSourceDirectories := (baseDirectory.value / "manual" / "working" / "scalaGuide" ** "code").get,
     headerLicense := {
       val currentYear = java.time.Year.now(java.time.Clock.systemUTC).getValue
-      Some(HeaderLicense.Custom(
-        s"Copyright (C) 2009-$currentYear Lightbend Inc. <https://www.lightbend.com>"
-      ))
+      Some(
+        HeaderLicense.Custom(
+          s"Copyright (C) 2009-$currentYear Lightbend Inc. <https://www.lightbend.com>"
+        )
+      )
     },
     headerEmptyLine := false
-  ).settings(overrideTwirlSettings: _*)
+  )
+  .settings(overrideTwirlSettings: _*)
   .dependsOn(twirlApi)
 
 // The changes in Twirl imports cause a problem with the PlayDocsPlugin, which defines its own twirl compile tasks
 // and doesn't use the default imports provided by Twirl but defines its own by scratch, and since the defaults
 // have changed, this breaks.  So, first we need to set all source generators in test to Nil, then we can redefine the
 // twirl settings.
-def overrideTwirlSettings: Seq[Setting[_]] = Seq(
-  sourceGenerators in Test := Nil
-) ++ inConfig(Test)(SbtTwirl.twirlSettings) ++ SbtTwirl.defaultSettings ++ SbtTwirl.positionSettings ++ Seq(
-  sourceDirectories in (Test, TwirlKeys.compileTemplates) ++=
-    (PlayDocsKeys.javaManualSourceDirectories.value ++ PlayDocsKeys.scalaManualSourceDirectories.value)
-)
+def overrideTwirlSettings: Seq[Setting[_]] =
+  Seq(
+    sourceGenerators in Test := Nil
+  ) ++ inConfig(Test)(SbtTwirl.twirlSettings) ++ SbtTwirl.defaultSettings ++ SbtTwirl.positionSettings ++ Seq(
+    sourceDirectories in (Test, TwirlKeys.compileTemplates) ++=
+      (PlayDocsKeys.javaManualSourceDirectories.value ++ PlayDocsKeys.scalaManualSourceDirectories.value)
+  )
 
 // the twirl plugin automatically adds this dependency, but this overrides it so
 // it can be an interproject dependency, rather than requiring it to be published

docs/manual/working/scalaGuide/main/templates/code/ScalaTemplates.scala

@@ -33,8 +33,7 @@ package html.utils {
 object ScalaTemplatesSpec extends Specification {
 
   val customer = Customer("mr customer")
-  val orders = List(Order("foo"), Order("bar"))
-
+  val orders   = List(Order("foo"), Order("bar"))
 
   "Scala templates" should {
     "support an example template" in {
@@ -57,7 +56,7 @@ object ScalaTemplatesSpec extends Specification {
       import play.twirl.api.StringInterpolation
 
       val name = "Martin"
-      val p = html"<p>Hello $name</p>"
+      val p    = html"<p>Hello $name</p>"
       //#string-interpolation
 
       p.body must_== "<p>Hello Martin</p>"
@@ -100,13 +99,17 @@ object ScalaTemplatesSpec extends Specification {
     "allow comments on the first line" in {
       val body = html.firstLineComment("blah").body
       body must contain("blah")
-      body must not contain("Home page")
+      body must not contain ("Home page")
     }
 
     {
       val body = html.snippets(Seq(Product("p1", "1"), Product("p2", "2")), User("John", "Doe"), Article("<foo>")).body
       def segment(name: String) = {
-        body.linesIterator.dropWhile(_ != "<span class=\"" + name + "\">").drop(1).takeWhile(_ != "</span>").mkString("\n")
+        body.linesIterator
+          .dropWhile(_ != "<span class=\"" + name + "\">")
+          .drop(1)
+          .takeWhile(_ != "</span>")
+          .mkString("\n")
       }
 
       "allow escaping the @ character" in {
@@ -140,7 +143,7 @@ object ScalaTemplatesSpec extends Specification {
       }
 
       "allow comments" in {
-        body must not contain("This is a comment")
+        body must not contain ("This is a comment")
       }
 
       "allow intering raw HTML" in {
@@ -153,10 +156,10 @@ object ScalaTemplatesSpec extends Specification {
 
       body must contain("User(Foo,Bar)")
       body must contain("value inside option")
-      body must not contain("Option(value inside option)")
+      body must not contain ("Option(value inside option)")
       body must contain("firstlast")
-      body must not contain("List")
+      body must not contain ("List")
       body must contain("helloUser(Foo,Bar)value inside optionfirstlast")
     }
   }
-}
+}

docs/project/plugins.sbt

@@ -5,5 +5,5 @@ lazy val sbtTwirl = ProjectRef(Path.fileProperty("user.dir").getParentFile, "plu
 resolvers ++= DefaultOptions.resolvers(snapshot = true)
 
 addSbtPlugin("com.typesafe.play" % "play-docs-sbt-plugin" % sys.props.getOrElse("play.version", "2.8.0-M3"))
-
-addSbtPlugin("de.heikoseeberger" % "sbt-header" % "5.2.0")
+addSbtPlugin("de.heikoseeberger" % "sbt-header"           % "5.2.0")
+addSbtPlugin("org.scalameta"     % "sbt-scalafmt"         % "2.0.0")