Use -opt-in instead of -Xopt-in in comments and scripts

libraries/stdlib/src/kotlin/annotations/ExperimentalStdlibApi.kt

@@ -12,7 +12,7 @@ import kotlin.annotation.AnnotationTarget.*
  *
  * Any usage of a declaration annotated with `@ExperimentalStdlibApi` must be accepted either by
  * annotating that usage with the [OptIn] annotation, e.g. `@OptIn(ExperimentalStdlibApi::class)`,
- * or by using the compiler argument `-Xopt-in=kotlin.ExperimentalStdlibApi`.
+ * or by using the compiler argument `-opt-in=kotlin.ExperimentalStdlibApi`.
  */
 @Suppress("DEPRECATION")
 @Experimental(level = Experimental.Level.ERROR)

libraries/stdlib/src/kotlin/annotations/Multiplatform.kt

@@ -14,7 +14,7 @@ import kotlin.internal.RequireKotlinVersionKind
  *
  * Any usage of a declaration annotated with `@ExperimentalMultiplatform` must be accepted either by
  * annotating that usage with the [OptIn] annotation, e.g. `@OptIn(ExperimentalMultiplatform::class)`,
- * or by using the compiler argument `-Xopt-in=kotlin.ExperimentalMultiplatform`.
+ * or by using the compiler argument `-opt-in=kotlin.ExperimentalMultiplatform`.
  */
 @Suppress("DEPRECATION")
 @Experimental

libraries/stdlib/src/kotlin/annotations/OptIn.kt

@@ -18,7 +18,7 @@ import kotlin.reflect.KClass
  * Call sites of any declaration annotated with that marker should opt in to the API either by using [OptIn],
  * or by being annotated with that marker themselves, effectively causing further propagation of the opt-in requirement.
  *
- * This class requires opt-in itself and can only be used with the compiler argument `-Xopt-in=kotlin.RequiresOptIn`.
+ * This class requires opt-in itself and can only be used with the compiler argument `-opt-in=kotlin.RequiresOptIn`.
  *
  * @property message message to be reported on usages of API without an explicit opt-in, or empty string for the default message.
  *                   The default message is: "This declaration is experimental and its usage should be marked with 'Marker'
@@ -50,7 +50,7 @@ public annotation class RequiresOptIn(
  * Allows to use the API denoted by the given markers in the annotated file, declaration, or expression.
  * If a declaration is annotated with [OptIn], its usages are **not** required to opt in to that API.
  *
- * This class requires opt-in itself and can only be used with the compiler argument `-Xopt-in=kotlin.RequiresOptIn`.
+ * This class requires opt-in itself and can only be used with the compiler argument `-opt-in=kotlin.RequiresOptIn`.
  */
 @Target(
     CLASS, PROPERTY, LOCAL_VARIABLE, VALUE_PARAMETER, CONSTRUCTOR, FUNCTION, PROPERTY_GETTER, PROPERTY_SETTER, EXPRESSION, FILE, TYPEALIAS

libraries/stdlib/src/kotlin/contracts/ContractBuilder.kt

@@ -14,7 +14,7 @@ import kotlin.internal.InlineOnly
  *
  * Any usage of a declaration annotated with `@ExperimentalContracts` must be accepted either by
  * annotating that usage with the [OptIn] annotation, e.g. `@OptIn(ExperimentalContracts::class)`,
- * or by using the compiler argument `-Xopt-in=kotlin.contracts.ExperimentalContracts`.
+ * or by using the compiler argument `-opt-in=kotlin.contracts.ExperimentalContracts`.
  */
 @Suppress("DEPRECATION")
 @Retention(AnnotationRetention.BINARY)

libraries/stdlib/src/kotlin/experimental/inferenceMarker.kt

@@ -10,7 +10,7 @@ package kotlin.experimental
  *
  * Any usage of a declaration annotated with `@ExperimentalTypeInference` must be accepted either by
  * annotating that usage with the [OptIn] annotation, e.g. `@OptIn(ExperimentalTypeInference::class)`,
- * or by using the compiler argument `-Xopt-in=kotlin.experimental.ExperimentalTypeInference`.
+ * or by using the compiler argument `-opt-in=kotlin.experimental.ExperimentalTypeInference`.
  */
 @Suppress("DEPRECATION")
 @Experimental(level = Experimental.Level.ERROR)

libraries/stdlib/src/kotlin/time/ExperimentalTime.kt

@@ -16,7 +16,7 @@ import kotlin.annotation.AnnotationTarget.*
  *
  * Any usage of a declaration annotated with `@ExperimentalTime` must be accepted either by
  * annotating that usage with the [OptIn] annotation, e.g. `@OptIn(ExperimentalTime::class)`,
- * or by using the compiler argument `-Xopt-in=kotlin.time.ExperimentalTime`.
+ * or by using the compiler argument `-opt-in=kotlin.time.ExperimentalTime`.
  */
 @Suppress("DEPRECATION")
 @Experimental(level = Experimental.Level.ERROR)