This paragraph has some IDs already in use, which of course the HeaderAnchor plugin shouldn't reuse.

Already got an ID in the heading element

Got one in anchor with 'name' attribute

Got one in anchor with 'id' attribute

Got one in anchor with 'xml:id' attribute, but that's not good enough

No ID provided

WORDS with whitespace

Ignore this

... %%% %^& ((( ))) []

foo.bar and foo-bar are OK as words

separate_words

The articles and short prepositions shouldn't be at the end of the ID

baz

baz

foo

foo

foo bar

foo bar

‘Funny’ characters—in UTF-8

Skip this even though it's name starts with 'h' Skip this because there's no 'h7' element in HTML