Lucene Search should not return HTML tags

My client does a query on the word "label".

Then, the search engine returns all the documents that have the <label> HTML tag in it. (like:

<label name="blahblah" />

).

So, we should:

• make HTML tags not being indexed (I don't know if it is possible).
• index the rendered content (rendered as plain text) instead of the wiki content.

WDYT?