bug symfony#13607 [Console] Fixed output bug, if escaped string in a formatted string. (tronsha)

This PR was submitted for the 2.7 branch but it was merged into the 2.3 branch instead (closes symfony#13607).

Discussion
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[Console] Fixed output bug, if escaped string in a formatted string.

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| License       | MIT

If there is a escaped tag in a formatted string, the output wasn't correct.

I have add a test for this problem and integrated a solution for this.

Commits
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1c62eb7 [Console] Fixed output bug, if escaped string in a formatted string.

Author: fabpot

src/Symfony/Component/Console/Formatter/OutputFormatter.php

@@ -150,6 +150,10 @@ public function format($message)
             $pos = $match[1];
             $text = $match[0];
 
+            if (0 != $pos && '\\' == $message[$pos - 1]) {
+                continue;
+            }
+
             // add the text up to the next tag
             $output .= $this->applyCurrentStyle(substr($message, $offset, $pos - $offset));
             $offset = $pos + strlen($text);
@@ -164,9 +168,6 @@ public function format($message)
             if (!$open && !$tag) {
                 // </>
                 $this->styleStack->pop();
-            } elseif ($pos && '\\' == $message[$pos - 1]) {
-                // escaped tag
-                $output .= $this->applyCurrentStyle($text);
             } elseif (false === $style = $this->createStyleFromString(strtolower($tag))) {
                 $output .= $this->applyCurrentStyle($text);
             } elseif ($open) {

src/Symfony/Component/Console/Tests/Formatter/OutputFormatterTest.php

@@ -101,6 +101,11 @@ public function testStyleEscaping()
             "(\033[32mz>=2.0,<a2.3\033[0m)",
             $formatter->format('(<info>'.$formatter->escape('z>=2.0,<a2.3').'</info>)')
         );
+
+        $this->assertEquals(
+            "\033[32m<error>some error</error>\033[39m",
+            $formatter->format('<info>'.$formatter->escape('<error>some error</error>').'</info>')
+        );
     }
 
     public function testDeepNestedStyles()