REPL: upgrade to JLine 3 (benefits include multi-line editing)

build.sbt

@@ -45,8 +45,9 @@ val junitInterfaceDep = "com.novocode"                   % "junit-interface"
 val scalacheckDep     = "org.scalacheck"                %% "scalacheck"                       % "1.14.3"                          % "test"
 val jolDep            = "org.openjdk.jol"                % "jol-core"                         % "0.9"
 val asmDep            = "org.scala-lang.modules"         % "scala-asm"                        % versionProps("scala-asm.version")
-val jlineDep          = "jline"                          % "jline"                            % versionProps("jline.version")
-val jansiDep          = "org.fusesource.jansi"           % "jansi"                            % "1.12"
+val jlineDep          = "org.jline"                      % "jline"                            % versionProps("jline.version")
+val jnaDep            = "net.java.dev.jna"               % "jna"                              % versionProps("jna.version")
+val jlineDeps         = Seq(jlineDep, jnaDep)
 val testInterfaceDep  = "org.scala-sbt"                  % "test-interface"                   % "1.0"
 val diffUtilsDep      = "com.googlecode.java-diff-utils" % "diffutils"                        % "1.3.0"
 
@@ -635,7 +636,7 @@ lazy val compiler = configureAsSubproject(project)
     libraryDependencies += asmDep,
     // These are only needed for the POM:
     // TODO: jline dependency is only needed for the REPL shell, which should move to its own jar
-    libraryDependencies ++= Seq(jlineDep, jansiDep),
+    libraryDependencies ++= jlineDeps,
     buildCharacterPropertiesFile := (resourceManaged in Compile).value / "scala-buildcharacter.properties",
     resourceGenerators in Compile += generateBuildCharacterPropertiesFile.map(file => Seq(file)).taskValue,
     // this a way to make sure that classes from interactive and scaladoc projects
@@ -676,9 +677,16 @@ lazy val compiler = configureAsSubproject(project)
       "-doc-root-content", (sourceDirectory in Compile).value + "/rootdoc.txt"
     ),
     Osgi.headers ++= Seq(
-      "Import-Package" -> ("jline.*;resolution:=optional," +
-                           raw"""scala.*;version="$${range;[==,=+);$${ver}}",""" +
-                           "*"),
+      "Import-Package" -> raw"""org.jline.keymap.*;resolution:=optional
+                            |org.jline.reader.*;resolution:=optional
+                            |org.jline.style.*;resolution:=optional
+                            |org.jline.terminal;resolution:=optional
+                            |org.jline.terminal.impl;resolution:=optional
+                            |org.jline.terminal.impl.jna.*;resolution:=optional
+                            |org.jline.terminal.spi;resolution:=optional
+                            |org.jline.utils;resolution:=optional
+                            |scala.*;version="$${range;[==,=+);$${ver}}"
+                            |*""".stripMargin.linesIterator.mkString(","),
       "Class-Path" -> "scala-reflect.jar scala-library.jar"
     ),
     // Generate the ScriptEngineFactory service definition. The old Ant build did this when building
@@ -714,7 +722,7 @@ lazy val replFrontend = configureAsSubproject(Project("repl-frontend", file(".")
   .settings(disableDocs)
   .settings(skip in publish := true)
   .settings(
-    libraryDependencies += jlineDep,
+    libraryDependencies ++= jlineDeps,
     name := "scala-repl-frontend",
     scalacOptions in Compile += "-Xlint:-deprecation,-inaccessible,-nonlocal-return,-valpattern,-doc-detached,_",
   )
@@ -1059,7 +1067,7 @@ lazy val scalaDist = Project("scala-dist", file(".") / "target" / "scala-dist-di
       (htmlOut ** "*.html").get ++ (fixedManOut ** "*.1").get
     }.taskValue,
     managedResourceDirectories in Compile := Seq((resourceManaged in Compile).value),
-    libraryDependencies += jlineDep,
+    libraryDependencies ++= jlineDeps,
     apiURL := None,
     fixPom(
       "/project/name" -> <name>Scala Distribution Artifacts</name>,
@@ -1203,7 +1211,7 @@ lazy val distDependencies = Seq(replFrontend, compiler, library, reflect, scalap
 lazy val dist = (project in file("dist"))
   .settings(commonSettings)
   .settings(
-    libraryDependencies ++= Seq(jlineDep),
+    libraryDependencies ++= jlineDeps,
     mkBin := mkBinImpl.value,
     mkQuick := Def.task {
       val cp = (fullClasspath in IntegrationTest in testP).value
@@ -1218,7 +1226,11 @@ lazy val dist = (project in file("dist"))
     packageBin in Compile := {
       val targetDir = (buildDirectory in ThisBuild).value / "pack" / "lib"
       val jlineJAR = findJar((dependencyClasspath in Compile).value, jlineDep).get.data
-      val mappings = Seq((jlineJAR, targetDir / "jline.jar"))
+      val jnaJAR = findJar((dependencyClasspath in Compile).value, jnaDep).get.data
+      val mappings = Seq(
+        (jlineJAR, targetDir / "jline.jar"),
+        (jnaJAR, targetDir / "jna.jar"),
+      )
       IO.copy(mappings, CopyOptions() withOverwrite true)
       targetDir
     },

doc/LICENSE.md

@@ -28,20 +28,15 @@ which are also included in the `licenses/` directory:
 ### [Apache License](http://www.apache.org/licenses/LICENSE-2.0.html)
 This license is used by the following third-party libraries:
 
-  * jansi
-
-### [BSD License](http://www.opensource.org/licenses/bsd-license.php)
-This license is used by the following third-party libraries:
-
-  * jline
-  * scalacheck
+  * JNA
 
 ### [BSD 3-Clause License](http://opensource.org/licenses/BSD-3-Clause)
 This license is used by the following third-party libraries:
 
-  * asm
+  * ASM
+  * JLine 3
 
 ### [MIT License](http://www.opensource.org/licenses/MIT)
 This license is used by the following third-party libraries:
 
-  * jquery
+  * jQuery

doc/License.rtf

@@ -1,5 +1,5 @@
-{\rtf1\ansi\ansicpg1252\cocoartf1671
-{\fonttbl\f0\fswiss\fcharset0 Helvetica;\f1\fswiss\fcharset0 Helvetica-Bold;}
+{\rtf1\ansi\ansicpg1252\cocoartf2511
+\cocoatextscaling0\cocoaplatform0{\fonttbl\f0\fswiss\fcharset0 Helvetica;\f1\fswiss\fcharset0 Helvetica-Bold;}
 {\colortbl;\red255\green255\blue255;\red27\green31\blue34;\red10\green77\blue204;\red0\green0\blue0;
 \red21\green23\blue26;}
 {\*\expandedcolortbl;;\cssrgb\c14118\c16078\c18039;\cssrgb\c1176\c40000\c83922;\csgray\c0\c0;
@@ -9,7 +9,7 @@
 {\list\listtemplateid3\listhybrid{\listlevel\levelnfc23\levelnfcn23\leveljc0\leveljcn0\levelfollow0\levelstartat1\levelspace360\levelindent0{\*\levelmarker \{disc\}}{\leveltext\leveltemplateid201\'01\uc0\u8226 ;}{\levelnumbers;}\fi-360\li720\lin720 }{\listname ;}\listid3}
 {\list\listtemplateid4\listhybrid{\listlevel\levelnfc23\levelnfcn23\leveljc0\leveljcn0\levelfollow0\levelstartat1\levelspace360\levelindent0{\*\levelmarker \{disc\}}{\leveltext\leveltemplateid301\'01\uc0\u8226 ;}{\levelnumbers;}\fi-360\li720\lin720 }{\listname ;}\listid4}}
 {\*\listoverridetable{\listoverride\listid1\listoverridecount0\ls1}{\listoverride\listid2\listoverridecount0\ls2}{\listoverride\listid3\listoverridecount0\ls3}{\listoverride\listid4\listoverridecount0\ls4}}
-\paperw11900\paperh16840\margl1440\margr1440\vieww17360\viewh22480\viewkind0
+\paperw11900\paperh16840\margl1440\margr1440\vieww17360\viewh20980\viewkind0
 \deftab720
 \pard\pardeftab720\sl360\sa320\partightenfactor0
 
@@ -48,7 +48,7 @@ Unless required by applicable law or agreed to in writing, software distributed
 \f0\b0 \cf2 This license is used by the following third-party libraries:\
 \pard\tx220\tx720\pardeftab720\li720\fi-720\sl360\partightenfactor0
 \ls1\ilvl0\cf2 \kerning1\expnd0\expndtw0 {\listtext	\uc0\u8226 	}\expnd0\expndtw0\kerning0
-jansi\
+JNA\
 \pard\pardeftab720\sl300\partightenfactor0
 
 \f1\b \cf3 \
@@ -59,7 +59,7 @@ jansi\
 \f0\b0 \cf2 This license is used by the following third-party libraries:\
 \pard\tx220\tx720\pardeftab720\li720\fi-720\sl360\partightenfactor0
 \ls2\ilvl0\cf2 \kerning1\expnd0\expndtw0 {\listtext	\uc0\u8226 	}\expnd0\expndtw0\kerning0
-jline\
+JLine 3\
 \pard\pardeftab720\sl300\partightenfactor0
 
 \f1\b \cf3 \
@@ -70,7 +70,7 @@ jline\
 \f0\b0 \cf2 This license is used by the following third-party libraries:\
 \pard\tx220\tx720\pardeftab720\li720\fi-720\sl360\partightenfactor0
 \ls3\ilvl0\cf2 \kerning1\expnd0\expndtw0 {\listtext	\uc0\u8226 	}\expnd0\expndtw0\kerning0
-asm\
+ASM\
 \pard\pardeftab720\sl300\partightenfactor0
 
 \f1\b \cf3 \
@@ -81,5 +81,5 @@ asm\
 \f0\b0 \cf2 This license is used by the following third-party libraries:\
 \pard\tx220\tx720\pardeftab720\li720\fi-720\sl360\partightenfactor0
 \ls4\ilvl0\cf2 \kerning1\expnd0\expndtw0 {\listtext	\uc0\u8226 	}\expnd0\expndtw0\kerning0
-jquery\
-}
+jQuery\
+}

doc/licenses/apache_jansi.txt → doc/licenses/apache_jna.txt

@@ -1,4 +1,6 @@
-Scala includes the JLine library, which includes the Jansi library.
+Scala includes the JLine library, which includes the JNA library,
+which is made available under multiple licenses, including the
+Apache 2 license:
 
                                  Apache License
                            Version 2.0, January 2004

doc/licenses/bsd_jline.txt

@@ -1,8 +1,10 @@
-Scala includes the JLine library:
+Scala includes the JLine 3 library:
 
-Copyright (c) 2002-2006, Marc Prud'hommeaux <mwp1@cornell.edu>
+Copyright (c) 2002-2018, the original author or authors.
 All rights reserved.
 
+https://opensource.org/licenses/BSD-3-Clause
+
 Redistribution and use in source and binary forms, with or
 without modification, are permitted provided that the following
 conditions are met:

project/ScalaOptionParser.scala

@@ -83,7 +83,7 @@ object ScalaOptionParser {
 
   // TODO retrieve these data programmatically, ala https://github.com/scala/scala-tool-support/blob/master/bash-completion/src/main/scala/BashCompletion.scala
   private def booleanSettingNames = List("-X", "-Xcheckinit", "-Xdev", "-Xdisable-assertions", "-Xexperimental", "-Xfatal-warnings", "-Xlog-free-terms", "-Xlog-free-types", "-Xlog-implicit-conversions", "-Xlog-implicits", "-Xlog-reflective-calls",
-    "-Xno-forwarders", "-Xno-patmat-analysis", "-Xnojline", "-Xprint-pos", "-Xprint-types", "-Xprompt", "-Xresident", "-Xshow-phases", "-Xverify", "-Y",
+    "-Xno-forwarders", "-Xno-patmat-analysis", "-Xprint-pos", "-Xprint-types", "-Xprompt", "-Xresident", "-Xshow-phases", "-Xverify", "-Y",
     "-Ybreak-cycles", "-Ydebug", "-Ycompact-trees", "-YdisableFlatCpCaching", "-Ydoc-debug",
     "-Yide-debug",
     "-Yissue-debug", "-Ylog-classpath", "-Ymacro-debug-lite", "-Ymacro-debug-verbose", "-Ymacro-no-expand",
@@ -93,7 +93,7 @@ object ScalaOptionParser {
     "-Yrepl-sync", "-Yshow-member-pos", "-Yshow-symkinds", "-Yshow-symowners", "-Yshow-syms", "-Yshow-trees", "-Yshow-trees-compact", "-Yshow-trees-stringified", "-Ytyper-debug",
     "-Ywarn-dead-code", "-Ywarn-numeric-widen", "-Ywarn-value-discard", "-Ywarn-extra-implicit", "-Ywarn-self-implicit",
     "-deprecation", "-explaintypes", "-feature", "-help", "-no-specialization", "-nobootcp", "-nowarn", "-optimise", "-print", "-unchecked", "-uniqid", "-usejavacp", "-usemanifestcp", "-verbose", "-version")
-  private def stringSettingNames = List("-Xgenerate-phase-graph", "-Xmain-class", "-Xpluginsdir", "-Xshow-class", "-Xshow-object", "-Xsource-reader", "-Ydump-classes", "-Ygen-asmp",
+  private def stringSettingNames = List("-Xjline", "-Xgenerate-phase-graph", "-Xmain-class", "-Xpluginsdir", "-Xshow-class", "-Xshow-object", "-Xsource-reader", "-Ydump-classes", "-Ygen-asmp",
     "-Ypresentation-log", "-Ypresentation-replay", "-Yrepl-outdir", "-d", "-dependencyfile", "-encoding", "-Xscript")
   private def pathSettingNames = List("-bootclasspath", "-classpath", "-extdirs", "-javabootclasspath", "-javaextdirs", "-sourcepath", "-toolcp")
   private val phases = List("all", "parser", "namer", "packageobjects", "typer", "patmat", "superaccessors", "extmethods", "pickler", "refchecks", "uncurry", "tailcalls", "specialize", "explicitouter", "erasure", "posterasure", "fields", "lambdalift", "constructors", "flatten", "mixin", "cleanup", "delambdafy", "icode", "jvm", "terminal")

src/compiler/scala/tools/nsc/fsc/ResidentScriptRunner.scala

@@ -13,7 +13,6 @@
 package scala.tools.nsc
 package fsc
 
-//import scala.tools.nsc.{AbstractScriptRunner, ScriptRunner, GenericRunnerSettings, Settings}
 import scala.reflect.io.Path
 import scala.util.control.NonFatal
 

src/compiler/scala/tools/nsc/settings/ScalaSettings.scala

@@ -120,7 +120,16 @@ trait ScalaSettings extends StandardScalaSettings with Warnings {
   val maxerrs            = IntSetting          ("-Xmaxerrs", "Maximum errors to print", 100, None, _ => None)
   val maxwarns           = IntSetting          ("-Xmaxwarns", "Maximum warnings to print", 100, None, _ => None)
   val Xmigration         = ScalaVersionSetting ("-Xmigration", "version", "Warn about constructs whose behavior may have changed since version.", initial = NoScalaVersion, default = Some(AnyScalaVersion))
-  val Xnojline           = BooleanSetting      ("-Xnojline", "Do not use JLine for editing.")
+  val Xjline             = ChoiceSetting       (
+    name    = "-Xjline",
+    helpArg = "mode",
+    descr   = "Select JLine mode.",
+    choices = List("emacs", "vi", "off"),
+    default = "emacs",
+    choicesHelp = List(
+      "emacs key bindings.",
+      "vi key bindings",
+      "No JLine editing."))
   val Xverify            = BooleanSetting      ("-Xverify", "Verify generic signatures in generated bytecode.")
   val plugin             = MultiStringSetting  ("-Xplugin", "paths", "Load a plugin from each classpath.")
   val disable            = MultiStringSetting  ("-Xplugin-disable", "plugin", "Disable plugins by name.")