Fix #81129

src/vs/workbench/contrib/search/common/searchModel.ts

@@ -107,12 +107,12 @@ export class Match {
 
 		// If match string is not matching then regex pattern has a lookahead expression
 		if (replaceString === null) {
-			const fullMatchTextWithTrailingContent = this.fullMatchText(true);
-			replaceString = searchModel.replacePattern.getReplaceString(fullMatchTextWithTrailingContent, searchModel.preserveCase);
+			const fullMatchTextWithSurroundingContent = this.fullMatchText(true);
+			replaceString = searchModel.replacePattern.getReplaceString(fullMatchTextWithSurroundingContent, searchModel.preserveCase);
 
 			// Search/find normalize line endings - check whether \r prevents regex from matching
 			if (replaceString === null) {
-				const fullMatchTextWithoutCR = fullMatchTextWithTrailingContent.replace(/\r\n/g, '\n');
+				const fullMatchTextWithoutCR = fullMatchTextWithSurroundingContent.replace(/\r\n/g, '\n');
 				replaceString = searchModel.replacePattern.getReplaceString(fullMatchTextWithoutCR, searchModel.preserveCase);
 			}
 		}
@@ -125,17 +125,16 @@ export class Match {
 		return replaceString;
 	}
 
-	fullMatchText(includeTrailing = false): string {
+	fullMatchText(includeSurrounding = false): string {
 		let thisMatchPreviewLines: string[];
-		if (includeTrailing) {
-			thisMatchPreviewLines = this._fullPreviewLines.slice(this._fullPreviewRange.startLineNumber);
+		if (includeSurrounding) {
+			thisMatchPreviewLines = this._fullPreviewLines;
 		} else {
 			thisMatchPreviewLines = this._fullPreviewLines.slice(this._fullPreviewRange.startLineNumber, this._fullPreviewRange.endLineNumber + 1);
 			thisMatchPreviewLines[thisMatchPreviewLines.length - 1] = thisMatchPreviewLines[thisMatchPreviewLines.length - 1].slice(0, this._fullPreviewRange.endColumn);
-
+			thisMatchPreviewLines[0] = thisMatchPreviewLines[0].slice(this._fullPreviewRange.startColumn);
 		}
 
-		thisMatchPreviewLines[0] = thisMatchPreviewLines[0].slice(this._fullPreviewRange.startColumn);
 		return thisMatchPreviewLines.join('\n');
 	}
 

src/vs/workbench/contrib/search/test/common/searchResult.test.ts

@@ -33,16 +33,16 @@ suite('SearchResult', () => {
 
 	test('Line Match', function () {
 		const fileMatch = aFileMatch('folder/file.txt', null!);
-		const lineMatch = new Match(fileMatch, ['foo bar'], new OneLineRange(0, 0, 3), new OneLineRange(1, 0, 3));
-		assert.equal(lineMatch.text(), 'foo bar');
+		const lineMatch = new Match(fileMatch, ['0 foo bar'], new OneLineRange(0, 2, 5), new OneLineRange(1, 0, 5));
+		assert.equal(lineMatch.text(), '0 foo bar');
 		assert.equal(lineMatch.range().startLineNumber, 2);
 		assert.equal(lineMatch.range().endLineNumber, 2);
 		assert.equal(lineMatch.range().startColumn, 1);
-		assert.equal(lineMatch.range().endColumn, 4);
-		assert.equal('file:///folder/file.txt>[2,1 -> 2,4]foo', lineMatch.id());
+		assert.equal(lineMatch.range().endColumn, 6);
+		assert.equal(lineMatch.id(), 'file:///folder/file.txt>[2,1 -> 2,6]foo');
 
 		assert.equal(lineMatch.fullMatchText(), 'foo');
-		assert.equal(lineMatch.fullMatchText(true), 'foo bar');
+		assert.equal(lineMatch.fullMatchText(true), '0 foo bar');
 	});
 
 	test('Line Match - Remove', function () {