Native, Gradle IT: Fix GeneralNativeIT.testNativeArgsWithSpaces()

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/native/GeneralNativeIT.kt

@@ -818,7 +818,8 @@ class GeneralNativeIT : BaseGradleIT() {
         build("compileKotlin${nativeHostTargetName.capitalize()}") {
             assertSuccessful()
             checkNativeCommandLineArguments(":compileKotlin${nativeHostTargetName.capitalize()}") { arguments ->
-                val escapedQuotedPath = "\"${fileWithSpacesInPath.absolutePath.replace("\"", "\\\"")}\""
+                val escapedQuotedPath =
+                    "\"${fileWithSpacesInPath.absolutePath.replace("\\", "\\\\").replace("\"", "\\\"")}\""
                 assertTrue(
                     escapedQuotedPath in arguments,
                     """

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/compilerRunner/KotlinToolRunner.kt

@@ -151,6 +151,10 @@ internal abstract class KotlinToolRunner(
         }
 
         private fun String.toPrettyString(): String =
-            if (isEmpty()) "\"\"" else escapeStringCharacters(this).let { if (any(Char::isWhitespace)) "\"$it\"" else it }
+            when {
+                isEmpty() -> "\"\""
+                any { it == '"' || it.isWhitespace() } -> '"' + escapeStringCharacters(this) + '"'
+                else -> this
+            }
     }
 }