improve fasta interpolation recovery

pkg/analyzer/test/generated/scanner_test.dart

Index: pkg/analyzer/test/generated/scanner_test.dart
diff --git a/pkg/analyzer/test/generated/scanner_test.dart b/pkg/analyzer/test/generated/scanner_test.dart
index 92d66210cbae4699026a7203b3d508f9b1b9c311..4ecf68ed7d698ba5d9d8ae0503180bb4e23d2802 100644
--- a/pkg/analyzer/test/generated/scanner_test.dart
+++ b/pkg/analyzer/test/generated/scanner_test.dart
@@ -79,10 +79,10 @@ class CharacterRangeReaderTest extends EngineTestCase {
 @reflectiveTest
 class LineInfoTest extends EngineTestCase {
   void test_lineInfo_multilineComment() {
-    String source = "/*\r *\r */";
+    String source = "/*\r\n *\r\n */";

[ahe, 2017/05/31 13:15:48]

Perhaps Fasta should support \r line endings?

[danrubel, 2017/06/01 19:02:46]

I don't think we need to do so given that most (all?) OS EOL is denoted by LF or
CR-LF. I'd rather not add more code to the scanner unless we need to support
this situation.

     _assertLineInfo(source, [
       new ScannerTest_ExpectedLocation(0, 1, 1),
-      new ScannerTest_ExpectedLocation(4, 2, 2),
+      new ScannerTest_ExpectedLocation(5, 2, 2),
       new ScannerTest_ExpectedLocation(source.length - 1, 3, 3)
     ]);
   }