Fix string formatter for unexpected truncation on non-ASCII characters

.changeset/late-otters-behave.md

@@ -0,0 +1,5 @@
+---
+"stylelint": patch
+---
+
+Fixed: `string` formatter for unexpected truncation on non-ASCII characters

lib/formatters/__tests__/stringFormatter.test.js

@@ -54,6 +54,31 @@ describe('stringFormatter', () => {
 path/to/file.css
  1:1  ×  Unexpected foo  bar
 
+1 problem (1 error, 0 warnings)`);
+	});
+
+	it('outputs warnings contains non-ASCII characters', () => {
+		const results = [
+			{
+				source: 'path/to/file.css',
+				warnings: [
+					{
+						line: 1,
+						column: 1,
+						rule: 'bar',
+						severity: 'error',
+						text: '简体中文こんにちは안녕하세요',
+					},
+				],
+			},
+		];
+
+		const output = prepareFormatterOutput(results, stringFormatter);
+
+		expect(output).toBe(stripIndent`
+path/to/file.css
+ 1:1  ×  简体中文こんにちは안녕하세요  bar
+
 1 problem (1 error, 0 warnings)`);
 	});
 
@@ -136,6 +161,42 @@ path/to/file.css
  1:1  ×  Unexpected very very very very very very very  bar-very-very-very-very-very-long
          very very very very very very long foo
 
+1 problem (1 error, 0 warnings)`);
+	});
+
+	it('outputs warnings with more than 80 non-ASCII characters and `process.stdout.columns` equal 90 characters', () => {
+		// For Windows tests
+		process.stdout.isTTY = true;
+		process.stdout.columns = 90;
+
+		const results = [
+			{
+				source: 'path/to/file.css',
+				warnings: [
+					{
+						line: 1,
+						column: 1,
+						rule: 'bar-very-very-very-very-very-long',
+						severity: 'error',
+						text:
+							'简体中文こんにちは안녕하세요简体中文こんにちは안녕하세요简体中文こんにちは안녕하세요简体中文こんにちは안녕하세요简体中文' +
+							'こんにちは안녕하세요简体中文こんにちは안녕하세요简体中文こんにちは안녕하세요简体中文こんにちは안녕하세요简体中文こんにちは안녕하세요',
+					},
+				],
+			},
+		];
+
+		const output = prepareFormatterOutput(results, stringFormatter);
+
+		expect(output).toBe(stripIndent`
+path/to/file.css
+ 1:1  ×  简体中文こんにちは안녕하세요简体中文こんにち   bar-very-very-very-very-very-long
+         は안녕하세요简体中文こんにちは안녕하세요简体
+         中文こんにちは안녕하세요简体中文こんにちは안
+         녕하세요简体中文こんにちは안녕하세요简体中文
+         こんにちは안녕하세요简体中文こんにちは안녕하
+         세요简体中文こんにちは안녕하세요
+
 1 problem (1 error, 0 warnings)`);
 	});
 

lib/formatters/stringFormatter.js

@@ -11,6 +11,7 @@ const { assertNumber } = require('../utils/validateTypes');
 const preprocessWarnings = require('./preprocessWarnings');
 const terminalLink = require('./terminalLink');
 
+const NON_ASCII_PATTERN = /\P{ASCII}/u;
 const MARGIN_WIDTHS = 9;
 
 /**
@@ -200,6 +201,9 @@ function formatter(messages, source, cwd) {
 		return row;
 	});
 
+	const messageWidth = getMessageWidth(columnWidths);
+	const hasNonAsciiChar = messages.some((msg) => NON_ASCII_PATTERN.test(msg.text));
+
 	output += table
 		.table(cleanedMessages, {
 			border: table.getBorderCharacters('void'),
@@ -209,8 +213,8 @@ function formatter(messages, source, cwd) {
 				2: { alignment: 'center', width: columnWidths[2] },
 				3: {
 					alignment: 'left',
-					width: getMessageWidth(columnWidths),
-					wrapWord: getMessageWidth(columnWidths) > 1,
+					width: messageWidth,
+					wrapWord: messageWidth > 1 && !hasNonAsciiChar,
 				},
 				4: { alignment: 'left', width: columnWidths[4], paddingRight: 0 },
 			},