add more tests.

src/vs/editor/common/model/textModel.ts

@@ -1137,6 +1137,18 @@ export class TextModel extends Disposable implements model.ITextModel {
 			searchRanges = [this.getFullModelRange()];
 		}
 
+		searchRanges = searchRanges.sort((d1, d2) => d1.startLineNumber - d2.startLineNumber || d1.startColumn - d2.startColumn);
+
+		const uniqueSearchRanges: Range[] = [];
+		uniqueSearchRanges.push(searchRanges.reduce((prev, curr) => {
+			if (Range.areIntersecting(prev, curr)) {
+				return prev.plusRange(curr);
+			}
+
+			uniqueSearchRanges.push(prev);
+			return curr;
+		}));
+
 		let matchMapper: (value: Range, index: number, array: Range[]) => model.FindMatch[];
 		if (!isRegex && searchString.indexOf('\n') < 0) {
 			// not regex, not multi line
@@ -1152,7 +1164,7 @@ export class TextModel extends Disposable implements model.ITextModel {
 			matchMapper = (searchRange: Range) => TextModelSearch.findMatches(this, new SearchParams(searchString, isRegex, matchCase, wordSeparators), searchRange, captureMatches, limitResultCount);
 		}
 
-		return searchRanges.map(matchMapper).reduce((arr, matches: model.FindMatch[]) => arr.concat(matches), []);
+		return uniqueSearchRanges.map(matchMapper).reduce((arr, matches: model.FindMatch[]) => arr.concat(matches), []);
 	}
 
 	public findNextMatch(searchString: string, rawSearchStart: IPosition, isRegex: boolean, matchCase: boolean, wordSeparators: string, captureMatches: boolean): model.FindMatch | null {

src/vs/editor/contrib/find/test/findModel.test.ts

@@ -493,6 +493,58 @@ suite('FindModel', () => {
 		findState.dispose();
 	});
 
+	findTest('multi-selection find model next stays in scope (overlap)', (editor) => {
+		let findState = new FindReplaceState();
+		findState.change({ searchString: 'hello', wholeWord: true, searchScope: [new Range(7, 1, 8, 2), new Range(8, 1, 9, 1)] }, false);
+		let findModel = new FindModelBoundToEditorModel(editor, findState);
+
+		assertFindState(
+			editor,
+			[1, 1, 1, 1],
+			null,
+			[
+				[7, 14, 7, 19],
+				[8, 14, 8, 19]
+			]
+		);
+
+		findModel.moveToNextMatch();
+		assertFindState(
+			editor,
+			[7, 14, 7, 19],
+			[7, 14, 7, 19],
+			[
+				[7, 14, 7, 19],
+				[8, 14, 8, 19]
+			]
+		);
+
+		findModel.moveToNextMatch();
+		assertFindState(
+			editor,
+			[8, 14, 8, 19],
+			[8, 14, 8, 19],
+			[
+				[7, 14, 7, 19],
+				[8, 14, 8, 19]
+			]
+		);
+
+		findModel.moveToNextMatch();
+		assertFindState(
+			editor,
+			[7, 14, 7, 19],
+			[7, 14, 7, 19],
+			[
+				[7, 14, 7, 19],
+				[8, 14, 8, 19]
+			]
+		);
+
+		findModel.dispose();
+		findState.dispose();
+	});
+
 	findTest('multi-selection find model next stays in scope', (editor) => {
 		let findState = new FindReplaceState();
 		findState.change({ searchString: 'hello', matchCase: true, wholeWord: false, searchScope: [new Range(6, 1, 7, 38), new Range(9, 3, 9, 38)] }, false);