bug #25241 [Yaml] do not eagerly filter comment lines (xabbuh)

This PR was merged into the 3.3 branch.

Discussion
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[Yaml] do not eagerly filter comment lines

| Q             | A
| ------------- | ---
| Branch?       | 3.3
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        |

Trying to be clever by filtering commented lines inside
`getNextEmbedBlock()` does not work as expected. The `#` may as well be
part of a multi-line quoted string where it must not be treated as the
beginning of a comment. Thus, we only must ensure that a comment-like
line does not skip the process of getting the next line of the embed
block.

Commits
-------

d594038 do not eagerly filter comment lines

src/Symfony/Component/Yaml/Parser.php

@@ -601,21 +601,10 @@ class Parser
                 continue;
             }
 
-            // we ignore "comment" lines only when we are not inside a scalar block
-            if (empty($blockScalarIndentations) && $this->isCurrentLineComment()) {
-                // remember ignored comment lines (they are used later in nested
-                // parser calls to determine real line numbers)
-                //
-                // CAUTION: beware to not populate the global property here as it
-                // will otherwise influence the getRealCurrentLineNb() call here
-                // for consecutive comment lines and subsequent embedded blocks
-                $this->locallySkippedLineNumbers[] = $this->getRealCurrentLineNb();
-
-                continue;
-            }
-
             if ($indent >= $newIndent) {
                 $data[] = substr($this->currentLine, $newIndent);
+            } elseif ($this->isCurrentLineComment()) {
+                $data[] = $this->currentLine;
             } elseif (0 == $indent) {
                 $this->moveToPreviousLine();
 

src/Symfony/Component/Yaml/Tests/ParserTest.php

@@ -1554,6 +1554,24 @@ YAML;
         $this->assertSame(array('foobar' => 'foobar'), $this->parser->parse($yaml));
     }
 
+    public function testCommentCharactersInMultiLineQuotedStrings()
+    {
+        $yaml = <<<YAML
+foo:
+    foobar: 'foo
+      #bar'
+    bar: baz
+YAML;
+        $expected = array(
+            'foo' => array(
+                'foobar' => 'foo #bar',
+                'bar' => 'baz',
+            ),
+        );
+
+        $this->assertSame($expected, $this->parser->parse($yaml));
+    }
+
     public function testParseMultiLineUnquotedString()
     {
         $yaml = <<<EOT