fixes continuation indent in ktfmt default formatter

Author: lonnelars

lib/src/ktfmt/java/com/diffplug/spotless/glue/ktfmt/KtfmtFormatterFunc.java

@@ -78,7 +78,7 @@ private FormattingOptions createFormattingOptions() {
 					formattingOptions.getStyle(),
 					ktfmtFormattingOptions.getMaxWidth().orElse(formattingOptions.getMaxWidth()),
 					ktfmtFormattingOptions.getBlockIndent().orElse(formattingOptions.getBlockIndent()),
-					ktfmtFormattingOptions.getContinuationIndent().orElse(formattingOptions.getBlockIndent()),
+					ktfmtFormattingOptions.getContinuationIndent().orElse(formattingOptions.getContinuationIndent()),
 					ktfmtFormattingOptions.getRemoveUnusedImport().orElse(formattingOptions.getRemoveUnusedImports()),
 					formattingOptions.getDebuggingPrintOpsAfterFormatting());
 		}

plugin-maven/src/test/java/com/diffplug/spotless/maven/kotlin/KtfmtTest.java

@@ -19,6 +19,8 @@
 
 import com.diffplug.spotless.maven.MavenIntegrationHarness;
 
+import java.io.IOException;
+
 class KtfmtTest extends MavenIntegrationHarness {
 	@Test
 	void testKtfmt() throws Exception {
@@ -36,6 +38,15 @@ void testKtfmt() throws Exception {
 		assertFile(path2).sameAsResource("kotlin/ktfmt/basic.clean");
 	}
 
+	@Test
+	void testContinuation() throws Exception {
+		writePomWithKotlinSteps("<ktfmt/>");
+
+		setFile("src/main/kotlin/main.kt").toResource("kotlin/ktfmt/continuation.dirty");
+		mavenRunner().withArguments("spotless:apply").runNoError();
+		assertFile("src/main/kotlin/main.kt").sameAsResource("kotlin/ktfmt/continuation.clean");
+	}
+
 	@Test
 	void testKtfmtStyle() throws Exception {
 		writePomWithKotlinSteps("<ktfmt><style>DROPBOX</style></ktfmt>");

testlib/src/main/resources/kotlin/ktfmt/continuation.clean

@@ -0,0 +1,6 @@
+fun myFunction() {
+  val location =
+      restTemplate.postForLocation(
+          "/v1/my-api", mapOf("name" to "some-name", "url" to "https://www.google.com"))
+  return location
+}

testlib/src/main/resources/kotlin/ktfmt/continuation.dirty

@@ -0,0 +1,4 @@
+fun myFunction() {
+    val location = restTemplate.postForLocation("/v1/my-api", mapOf("name" to "some-name", "url" to "https://www.google.com"))
+    return location
+}