Include path in the search index with include_path

[timakro]

This way URLs can be searched conveniently on wiki- / knowledge base- / docs-style sites. E.g. the path /documentation/getting-started/overview/ at https://getzola.org would be matched by queries like "documentation" or "getting started".

Closes #1481.

Sanity check:

• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

Code changes

(Delete or ignore this section for documentation changes)

• Are you doing the PR on the next branch?

If the change is a new feature or adding to/changing an existing one:

• Have you created/updated the relevant documentation page(s)?

[Keats]

the path /documentation/getting-started/overview/ at https://getzola.org would be matched by queries like "documentation" or "getting started".

Does that mean that the index will be essentially filled with "useless" data in this case? Every doc page starts with documentation

[timakro]

On my wiki I have a bunch of pages in the hack section. All of them are indexed under "hack":

So when you search for "hack" you find those pages. To me this seems like the behavior you'd expect.

You probably only want to use path search when the path of the pages is exposed to your users in some way. For example if you show the path of the pages in the search results and highlight the matches. Or if you show the path on top of the page e.g. in breadcrumbs style. Then matching all docs pages when searching for "documentation" makes sense.

[timakro]

Thanks for taking the time to review my code. And thanks for creating this terrific piece of software! :)

[Keats]

You're welcome!