In some cases the Automatic filter duplicates the content

Step 1 : we now have a test that fails, characterizing the issue.

Another error case is when the first match is within the root text node while a second one is within another element, like Is foo also a <em>foobar</em>?, in which case the second one is not being detected.

All error cases addressed.

Typo in composer.json

Merged to current dev HEAD.

Automatically closed - issue fixed for 2 weeks with no activity.