KT-13810 Kotlin code completion missing last character

#KT-13810 Fixed

idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/handlers/KotlinCallableInsertHandler.kt

@@ -59,7 +59,10 @@ abstract class KotlinCallableInsertHandler(val callType: CallType<*>) : BaseDecl
 
                 psiDocumentManager.doPostponedOperationsAndUnblockDocument(context.document)
 
-                context.document.deleteString(context.tailOffset - 1, context.tailOffset) // delete space
+                // delete space
+                if (context.document.isTextAt(context.tailOffset - 1, " ")) { // sometimes space can be lost because of reformatting
+                    context.document.deleteString(context.tailOffset - 1, context.tailOffset)
+                }
             }
         }
     }

idea/idea-completion/testData/handlers/basic/KT14130.kt

@@ -0,0 +1,16 @@
+// CODE_STYLE_SETTING: ALIGN_MULTILINE_PARAMETERS_IN_CALLS = true
+package test
+
+interface Foo {
+    companion object {
+        val EMPTY = object : Foo {}
+    }
+}
+
+fun test(foo: Foo, bar: String) {}
+
+fun test2() {
+    test(<caret>, "")
+}
+
+// ELEMENT: EMPTY

idea/idea-completion/testData/handlers/basic/KT14130.kt.after

@@ -0,0 +1,16 @@
+// CODE_STYLE_SETTING: ALIGN_MULTILINE_PARAMETERS_IN_CALLS = true
+package test
+
+interface Foo {
+    companion object {
+        val EMPTY = object : Foo {}
+    }
+}
+
+fun test(foo: Foo, bar: String) {}
+
+fun test2() {
+    test(Foo.EMPTY<caret>, "")
+}
+
+// ELEMENT: EMPTY

idea/idea-completion/tests/org/jetbrains/kotlin/idea/completion/test/handlers/AbstractCompletionHandlerTests.kt

@@ -19,6 +19,7 @@ package org.jetbrains.kotlin.idea.completion.test.handlers
 import com.intellij.codeInsight.completion.CompletionType
 import com.intellij.openapi.util.io.FileUtil
 import com.intellij.psi.codeStyle.CodeStyleSettingsManager
+import org.jetbrains.kotlin.idea.KotlinLanguage
 import org.jetbrains.kotlin.idea.completion.test.ExpectedCompletionUtils
 import org.jetbrains.kotlin.idea.core.formatter.KotlinCodeStyleSettings
 import org.jetbrains.kotlin.idea.test.KotlinWithJdkAndRuntimeLightProjectDescriptor
@@ -57,15 +58,21 @@ abstract class AbstractCompletionHandlerTest(private val defaultCompletionType:
 
             val completionType = ExpectedCompletionUtils.getCompletionType(fileText) ?: defaultCompletionType
 
-            val codeStyleSettings = KotlinCodeStyleSettings.getInstance(project)
+            val kotlinStyleSettings = KotlinCodeStyleSettings.getInstance(project)
+            val commonStyleSettings = CodeStyleSettingsManager.getSettings(project).getCommonSettings(KotlinLanguage.INSTANCE)
             for (line in InTextDirectivesUtils.findLinesWithPrefixesRemoved(fileText, CODE_STYLE_SETTING_PREFIX)) {
                 val index = line.indexOfOrNull('=') ?: error("Invalid code style setting '$line': '=' expected")
                 val settingName = line.substring(0, index).trim()
                 val settingValue = line.substring(index + 1).trim()
-                val field = codeStyleSettings.javaClass.getDeclaredField(settingName)
+                val (field, settings) = try {
+                    kotlinStyleSettings.javaClass.getDeclaredField(settingName) to kotlinStyleSettings
+                }
+                catch (e: NoSuchFieldException) {
+                    commonStyleSettings.javaClass.getDeclaredField(settingName) to commonStyleSettings
+                }
                 when (field.type.name) {
-                    "boolean" -> field.setBoolean(codeStyleSettings, settingValue.toBoolean())
-                    "int" -> field.setInt(codeStyleSettings, settingValue.toInt())
+                    "boolean" -> field.setBoolean(settings, settingValue.toBoolean())
+                    "int" -> field.setInt(settings, settingValue.toInt())
                     else -> error("Unsupported setting type: ${field.type}")
                 }
             }

idea/idea-completion/tests/org/jetbrains/kotlin/idea/completion/test/handlers/BasicCompletionHandlerTestGenerated.java

@@ -125,6 +125,12 @@ public class BasicCompletionHandlerTestGenerated extends AbstractBasicCompletion
         doTest(fileName);
     }
 
+    @TestMetadata("KT14130.kt")
+    public void testKT14130() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/idea-completion/testData/handlers/basic/KT14130.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("NestedTypeArg.kt")
     public void testNestedTypeArg() throws Exception {
         String fileName = KotlinTestUtils.navigationMetadata("idea/idea-completion/testData/handlers/basic/NestedTypeArg.kt");