more possible search improvements

[Rich-Harris]

• tidy up code blocks before indexing them (remove // @noErrors and /// file and +++ and so on)
• incorporate full breadcrumbs into search — e.g. searching 'transition tutorial' should bring up the transition tutorial (right now it brings up the docs)
• more indication of what the search result is (an exported function? a type? an entire module? etc) — right now we distinguish between documents and fragments, but if you're e.g. searching for reference docs then more specificity might be nice
• fuzzy search on breadcrumbs/titles (not on full text, that's probably too expensive unless we adopt a completely different approach to indexing and searching)
• hints when you open the dialog, above 'recent searches' (example searches and the like)

[Rich-Harris]

get rid of <!--- copy: false --> and stuff

[Rich-Harris]

[Fabian9799]

Some thoughts about the new search:

Would be nice to show items that are related to the current page higher up in the list.
For example, if I'm on the playground page and I search for "spread props" show the spread props example really high and when I'm on the tutorial page and search the same thing show the spread props tutorial page higher.
But could also confuse people if the search isn't consistent across the entire page.

Another Idea I had would be to have nested sections.
Instead of having a "examples props > spread props" section, maybe group that under "examples > props > spread props".
If there are only four main sections (svelte, sveltekit, tutorial and examples) and everything else is nested inside it, it's also way easier to filter the results instead of having to collapse multiple similar sections.

[eltigerchino]

#650 might be relevant in that there's no easy way to clear the search in mobile except to re-open it. Other sites have a reset button to clear the search.

[theetrain]

If I may add a quality of life improvement

• While searching, highlight the first result in some way and have the ENTER key go to first search result unless arrow keys are used to highlight another result.