Code cleanup: get rid of _ (mostly renamed to arg)

idea/idea-repl/src/org/jetbrains/kotlin/console/KotlinConsoleRunner.kt

@@ -114,7 +114,7 @@ public class KotlinConsoleRunner(
 
         keeper.putVirtualFileToConsole(consoleFile, this)
         processHandler.addProcessListener(object : ProcessAdapter() {
-            override fun processTerminated(_: ProcessEvent) {
+            override fun processTerminated(event: ProcessEvent) {
                 keeper.removeConsole(consoleFile)
             }
         })
@@ -123,7 +123,7 @@ public class KotlinConsoleRunner(
     }
 
     override fun createExecuteActionHandler() = object : ProcessBackedConsoleExecuteActionHandler(processHandler, false) {
-        override fun runExecuteAction(_: LanguageConsoleView) = executor.executeCommand()
+        override fun runExecuteAction(consoleView: LanguageConsoleView) = executor.executeCommand()
     }
 
     override fun fillToolBarActions(toolbarActions: DefaultActionGroup,

idea/idea-repl/src/org/jetbrains/kotlin/console/actions/KotlinConsoleModuleDialog.kt

@@ -60,6 +60,6 @@ public class KotlinConsoleModuleDialog(private val project: Project) {
     }
 
     private fun createRunAction(module: Module) = object : AnAction(module.name) {
-        override fun actionPerformed(_: AnActionEvent) = runConsole(module)
+        override fun actionPerformed(e: AnActionEvent) = runConsole(module)
     }
 }

idea/idea-repl/src/org/jetbrains/kotlin/console/actions/RunExecuteActions.kt

@@ -57,5 +57,5 @@ public class BuildAndRestartConsoleAction(
         private val runner: KotlinConsoleRunner
 ) : AnAction("Build and restart", "Build module '${runner.module.name}' and restart", AllIcons.Actions.Restart) {
 
-    override fun actionPerformed(_: AnActionEvent) = runner.compilerHelper.compileModule()
+    override fun actionPerformed(e: AnActionEvent) = runner.compilerHelper.compileModule()
 }

idea/idea-repl/src/org/jetbrains/kotlin/console/gutter/KotlinConsoleGutterContentProvider.kt

@@ -24,5 +24,5 @@ public class KotlinConsoleGutterContentProvider : BasicGutterContentProvider() {
      *  This method overriding is needed to prevent [BasicGutterContentProvider] from adding some strange unicode
      *  symbols of zero width and to ease range highlighting.
      */
-    override fun beforeEvaluate(_: Editor) = Unit
+    override fun beforeEvaluate(editor: Editor) = Unit
 }