Cleared terminal lines should have isWrapped reset

Fixes #1710

src/addons/search/SearchHelper.ts

@@ -191,7 +191,7 @@ export class SearchHelper implements ISearchHelper {
     do {
       const nextLine = this._terminal._core.buffer.lines.get(lineIndex + 1);
       lineWrapsToNext = nextLine ? nextLine.isWrapped : false;
-      lineString += this._terminal._core.buffer.translateBufferLineToString(lineIndex, !lineWrapsToNext && trimRight);
+      lineString += this._terminal._core.buffer.translateBufferLineToString(lineIndex, !lineWrapsToNext && trimRight).substring(0, this._terminal.cols);
       lineIndex++;
     } while (lineWrapsToNext);
 

src/addons/search/search.test.ts

@@ -82,6 +82,9 @@ describe('search addon', () => {
       expect(hello3).eql(undefined);
       expect(llo).eql(undefined);
       expect(goodbye).eql({col: 0, row: 5, term: 'goodbye'});
+      term.core.resize(9, 5);
+      const hello0Resize = term.searchHelper.findInLine('Hello', 0);
+      expect(hello0Resize).eql({col: 8, row: 0, term: 'Hello'});
     });
     it('should respect search regex', () => {
       search.apply(<any>MockTerminal);