fix(rule): correct error reporting on muliple line

fix #77

Author: azu

src/ginger.js

@@ -69,10 +69,10 @@ function reporter(context, options = {}) {
           )
           .forEach((correction) => {
             const index = correction.start;
-            const originalPosition = source.originalPositionFromIndex(index);
+            const originalIndex = source.originalIndexFromIndex(index);
             const originalRange = [
-              originalPosition.column,
-              originalPosition.column + correction.length,
+              originalIndex,
+              originalIndex + correction.length,
             ];
 
             // if range is ignored, skip reporting
@@ -89,8 +89,7 @@ function reporter(context, options = {}) {
             report(
               node,
               new RuleError(message, {
-                line: originalPosition.line - 1,
-                column: originalPosition.column,
+                index: originalIndex,
                 fix,
               }),
             );

test/ginger.js

@@ -59,5 +59,16 @@ tester.run('ginger', rule, {
         },
       ],
     },
+    {
+      text: 'This sentence contains\n newline and errror.',
+      output: 'This sentence contains\n newline and error.',
+      errors: [
+        {
+          message: 'errror -> error',
+          line: 2,
+          column: 14,
+        },
+      ],
+    },
   ],
 });