Deprecate unused ConsoleUnpromptEvent

main-command/src/main/scala/sbt/internal/CommandChannel.scala

@@ -62,4 +62,5 @@ case class ConsolePromptEvent(state: State) extends EventMessage
 /*
  * This is a data passed specifically for unprompting local console.
  */
+@deprecated("No longer used", "1.4.0")
 case class ConsoleUnpromptEvent(lastSource: Option[CommandSource]) extends EventMessage

main-command/src/main/scala/sbt/internal/ConsoleChannel.scala

@@ -51,18 +51,6 @@ private[sbt] final class ConsoleChannel(val name: String) extends CommandChannel
             askUserThread = Some(x)
             x.start()
         }
-      case e: ConsoleUnpromptEvent =>
-        e.lastSource match {
-          case Some(src) if src.channelName != name =>
-            askUserThread match {
-              case Some(_) =>
-              // keep listening while network-origin command is running
-              // make sure to test Windows and Cygwin, if you uncomment
-              // shutdown()
-              case _ =>
-            }
-          case _ =>
-        }
       case _ => //
     }
 

main/src/main/scala/sbt/Main.scala

@@ -9,7 +9,7 @@ package sbt
 
 import java.io.{ File, IOException }
 import java.net.URI
-import java.nio.file.{ FileAlreadyExistsException, Files, FileSystems }
+import java.nio.file.{ FileAlreadyExistsException, FileSystems, Files }
 import java.util.concurrent.ForkJoinPool
 import java.util.concurrent.atomic.AtomicBoolean
 import java.util.{ Locale, Properties }
@@ -23,7 +23,7 @@ import sbt.internal._
 import sbt.internal.inc.ScalaInstance
 import sbt.internal.util.Types.{ const, idFun }
 import sbt.internal.util._
-import sbt.internal.util.complete.{ SizeParser, Parser }
+import sbt.internal.util.complete.{ Parser, SizeParser }
 import sbt.io._
 import sbt.io.syntax._
 import sbt.util.{ Level, Logger, Show }
@@ -888,7 +888,7 @@ object BuiltinCommands {
   }
 
   def shell: Command = Command.command(Shell, Help.more(Shell, ShellDetailed)) { s0 =>
-    import sbt.internal.{ ConsolePromptEvent, ConsoleUnpromptEvent }
+    import sbt.internal.ConsolePromptEvent
     val exchange = StandardMain.exchange
     val welcomeState = displayWelcomeBanner(s0)
     val s1 = exchange run welcomeState
@@ -904,7 +904,6 @@ object BuiltinCommands {
         remainingCommands = exec +: Exec(Shell, None) +: s1.remainingCommands
       )
       .setInteractive(true)
-    exchange publishEventMessage ConsoleUnpromptEvent(exec.source)
     if (exec.commandLine.trim.isEmpty) newState
     else newState.clearGlobalLog
   }

main/src/main/scala/sbt/internal/CommandExchange.scala

@@ -364,10 +364,6 @@ private[sbt] final class CommandExchange {
         channels collect {
           case c: ConsoleChannel => c.publishEventMessage(entry)
         }
-      case entry: ConsoleUnpromptEvent =>
-        channels collect {
-          case c: ConsoleChannel => c.publishEventMessage(entry)
-        }
       case entry: ExecStatusEvent =>
         channels collect {
           case c: ConsoleChannel =>