Fix #80667

src/vs/workbench/services/search/common/search.ts

@@ -252,7 +252,10 @@ export class TextSearchMatch implements ITextSearchMatch {
 	constructor(text: string, range: ISearchRange | ISearchRange[], previewOptions?: ITextSearchPreviewOptions) {
 		this.ranges = range;
 
-		if (previewOptions && previewOptions.matchLines === 1 && (!Array.isArray(range) || range.length === 1)) {
+		// Trim preview if this is one match and a single-line match with a preview requested.
+		// Otherwise send the full text, like for replace or for showing multiple previews.
+		// TODO this is fishy.
+		if (previewOptions && previewOptions.matchLines === 1 && (!Array.isArray(range) || range.length === 1) && isSingleLineRange(range)) {
 			const oneRange = Array.isArray(range) ? range[0] : range;
 
 			// 1 line preview requested
@@ -273,7 +276,6 @@ export class TextSearchMatch implements ITextSearchMatch {
 		} else {
 			const firstMatchLine = Array.isArray(range) ? range[0].startLineNumber : range.startLineNumber;
 
-			// n line, no preview requested, or multiple matches in the preview
 			this.preview = {
 				text,
 				matches: mapArrayOrNot(range, r => new SearchRange(r.startLineNumber - firstMatchLine, r.startColumn, r.endLineNumber - firstMatchLine, r.endColumn))
@@ -282,6 +284,12 @@ export class TextSearchMatch implements ITextSearchMatch {
 	}
 }
 
+function isSingleLineRange(range: ISearchRange | ISearchRange[]): boolean {
+	return Array.isArray(range) ?
+		range[0].startLineNumber === range[0].endLineNumber :
+		range.startLineNumber === range.endLineNumber;
+}
+
 export class SearchRange implements ISearchRange {
 	startLineNumber: number;
 	startColumn: number;

src/vs/workbench/services/search/test/common/search.test.ts

@@ -12,7 +12,7 @@ suite('TextSearchResult', () => {
 		charsPerLine: 100
 	};
 
-	function assertPreviewRangeText(text: string, result: TextSearchMatch): void {
+	function assertOneLinePreviewRangeText(text: string, result: TextSearchMatch): void {
 		assert.equal(
 			result.preview.text.substring((<SearchRange>result.preview.matches).startColumn, (<SearchRange>result.preview.matches).endColumn),
 			text);
@@ -22,49 +22,49 @@ suite('TextSearchResult', () => {
 		const range = new OneLineRange(5, 0, 0);
 		const result = new TextSearchMatch('', range);
 		assert.deepEqual(result.ranges, range);
-		assertPreviewRangeText('', result);
+		assertOneLinePreviewRangeText('', result);
 	});
 
 	test('empty with preview options', () => {
 		const range = new OneLineRange(5, 0, 0);
 		const result = new TextSearchMatch('', range, previewOptions1);
 		assert.deepEqual(result.ranges, range);
-		assertPreviewRangeText('', result);
+		assertOneLinePreviewRangeText('', result);
 	});
 
 	test('short without preview options', () => {
 		const range = new OneLineRange(5, 4, 7);
 		const result = new TextSearchMatch('foo bar', range);
 		assert.deepEqual(result.ranges, range);
-		assertPreviewRangeText('bar', result);
+		assertOneLinePreviewRangeText('bar', result);
 	});
 
 	test('short with preview options', () => {
 		const range = new OneLineRange(5, 4, 7);
 		const result = new TextSearchMatch('foo bar', range, previewOptions1);
 		assert.deepEqual(result.ranges, range);
-		assertPreviewRangeText('bar', result);
+		assertOneLinePreviewRangeText('bar', result);
 	});
 
 	test('leading', () => {
 		const range = new OneLineRange(5, 25, 28);
 		const result = new TextSearchMatch('long text very long text foo', range, previewOptions1);
 		assert.deepEqual(result.ranges, range);
-		assertPreviewRangeText('foo', result);
+		assertOneLinePreviewRangeText('foo', result);
 	});
 
 	test('trailing', () => {
 		const range = new OneLineRange(5, 0, 3);
 		const result = new TextSearchMatch('foo long text very long text long text very long text long text very long text long text very long text long text very long text', range, previewOptions1);
 		assert.deepEqual(result.ranges, range);
-		assertPreviewRangeText('foo', result);
+		assertOneLinePreviewRangeText('foo', result);
 	});
 
 	test('middle', () => {
 		const range = new OneLineRange(5, 30, 33);
 		const result = new TextSearchMatch('long text very long text long foo text very long text long text very long text long text very long text long text very long text', range, previewOptions1);
 		assert.deepEqual(result.ranges, range);
-		assertPreviewRangeText('foo', result);
+		assertOneLinePreviewRangeText('foo', result);
 	});
 
 	test('truncating match', () => {
@@ -76,7 +76,7 @@ suite('TextSearchResult', () => {
 		const range = new OneLineRange(0, 4, 7);
 		const result = new TextSearchMatch('foo bar', range, previewOptions);
 		assert.deepEqual(result.ranges, range);
-		assertPreviewRangeText('b', result);
+		assertOneLinePreviewRangeText('b', result);
 	});
 
 	test('one line of multiline match', () => {
@@ -88,7 +88,11 @@ suite('TextSearchResult', () => {
 		const range = new SearchRange(5, 4, 6, 3);
 		const result = new TextSearchMatch('foo bar\nfoo bar', range, previewOptions);
 		assert.deepEqual(result.ranges, range);
-		assertPreviewRangeText('bar', result);
+		assert.equal(result.preview.text, 'foo bar\nfoo bar');
+		assert.equal((<SearchRange>result.preview.matches).startLineNumber, 0);
+		assert.equal((<SearchRange>result.preview.matches).startColumn, 4);
+		assert.equal((<SearchRange>result.preview.matches).endLineNumber, 1);
+		assert.equal((<SearchRange>result.preview.matches).endColumn, 3);
 	});
 
 	// test('all lines of multiline match', () => {
@@ -102,4 +106,4 @@ suite('TextSearchResult', () => {
 	// 	assert.deepEqual(result.range, range);
 	// 	assertPreviewRangeText('bar\nfoo', result);
 	// });
-});
\ No newline at end of file
+});