Fix table trailing backslash

src/Symfony/Component/Console/Helper/Table.php

@@ -13,6 +13,7 @@ namespace Symfony\Component\Console\Helper;
 
 use Symfony\Component\Console\Exception\InvalidArgumentException;
 use Symfony\Component\Console\Exception\RuntimeException;
+use Symfony\Component\Console\Formatter\OutputFormatter;
 use Symfony\Component\Console\Formatter\WrappableOutputFormatterInterface;
 use Symfony\Component\Console\Output\ConsoleSectionOutput;
 use Symfony\Component\Console\Output\OutputInterface;
@@ -528,6 +529,8 @@ class Table
                 if (!strstr($cell, "\n")) {
                     continue;
                 }
+                $escaped = implode("\n", array_map([OutputFormatter::class, 'escapeTrailingBackslash'], explode("\n", $cell)));
+                $cell = $cell instanceof TableCell ? new TableCell($escaped, ['colspan' => $cell->getColspan()]) : $escaped;
                 $lines = explode("\n", str_replace("\n", "<fg=default;bg=default>\n</>", $cell));
                 foreach ($lines as $lineKey => $line) {
                     if ($cell instanceof TableCell) {

src/Symfony/Component/Console/Tests/Helper/TableTest.php

@@ -1072,6 +1072,26 @@ TABLE
 |               | ities |            |                 |
 +---------------+-------+------------+-----------------+
 
+TABLE;
+
+        $this->assertEquals($expected, $this->getOutputContent($output));
+    }
+
+    public function testColumnMaxWidthsWithTrailingBackslash()
+    {
+        (new Table($output = $this->getOutputStream()))
+            ->setColumnMaxWidth(0, 5)
+            ->setRows([['1234\6']])
+            ->render()
+        ;
+
+        $expected =
+            <<<'TABLE'
++-------+
+| 1234\ |
+| 6     |
++-------+
+
 TABLE;
 
         $this->assertEquals($expected, $this->getOutputContent($output));