EA-28828 - IOOBE: CharArray.charAt

Corrected pasting at the document start

java/java-tests/testSrc/com/intellij/codeInsight/editorActions/BlockIndentOnPasteTest.groovy

@@ -156,6 +156,23 @@ class Test {
      }
     }
 }\
+'''
+    doTest(before, toPaste, expected)
+  }
+
+  void testPasteAtDocumentStartColumn() {
+    def before = '<caret>'
+
+    def toPaste =
+    '''\
+          class Test {
+          }\
+'''
+
+
+    def expected = '''\
+class Test {
+}\
 '''
     doTest(before, toPaste, expected)
   }