Implemented nested inline tag parsing;

Added unit tests for LongDescription.php;
Added the "src" folder as white listed for code coverage in the PHPUnit configuration;
Fixed the @covers annotation inside the CoversTagTest.php (isn't this ironic?).

src/phpDocumentor/Reflection/DocBlock/LongDescription.php

@@ -61,7 +61,34 @@ class LongDescription implements \Reflector
     {
         if (null === $this->parsedContents) {
             $this->parsedContents = preg_split(
-                '/\{(\@.*?)\}/uS',
+                '/\{
+                    # We want the whole tag line, but without the inline tag
+                    # delimiters.
+                    (\@
+                        # The content should not be captured, or it will appear
+                        # in the result separately.
+                        (?:
+                            # Match nested inline tags.
+                            # Because we did not catch the tag delimiters
+                            # earlier, we must be explicit with them here.
+                            \{(?1)?\}
+                            |
+                            # "{@}" is not a valid inline tag. This ensures that
+                            # having it occur inside an inline tag does not trip
+                            # us up.
+                            \{\@\}
+                            |
+                            # If we are not dealing with a nested inline tag,
+                            # get the character, as long as it is not a closing
+                            # tag delimiter.
+                            # This is an alternative way of non-greedy matching.
+                            [^\}]
+                        )+  # We need to keep doing these checks for every
+                            # character, since we never know where an inline tag
+                            # is going to start at. The "+" ensures we are not
+                            # treating "{@}" as a valid inline tag.
+                    )
+                \}/xuS',
                 $this->contents,
                 null,
                 PREG_SPLIT_DELIM_CAPTURE
@@ -129,4 +156,4 @@ class LongDescription implements \Reflector
     {
         return 'Not yet implemented';
     }
-}
+}