Improve support for instant loading with keyboard navigation

[squidfunk]

This PR improves instant loading for keyboard navigation. We need to refactor instant loading a bit to support adding and removal of elements in the head when they're not present. This needs to be addressed before merging this PR.

[vedranmiletic]

We need to refactor instant loading a bit to support adding and removal of elements in the head when they're not present. This needs to be addressed before merging this PR.

Sorry to go on a trajectory a bit, but this is very interesting. For our use case, the custom onion-location meta tag should be updated when navigating from a page to another page. Is there a description of the planned implementation somewhere?

[squidfunk]

@vedranmiletic the instant loading code got a refactor and I took the chance to very thoroughly document how it's done and what the limitations are. Take a look at the source code. If questions remain, please ask them here. We could probably implement a traversal and updating of tags so tags are entirely added and replaced, not only updated.

[filips123]

This is the list of tags that get updated on instant loading, right?

I think it would be useful to let users extend this list easily (probably in the config file), so if we use overrides/templates to add custom tags, those would be handles as well. Support for adding and removing tags would also be useful when custom tags are added only to specific pages.

[squidfunk]

Thanks for the suggestion. It's a better idea to deduplicate and update all tags, so there's no configuration necessary, which is exactly what we will do. This will also mean that custom tags are correctly added/removed/replaced.

[squidfunk]

@vedranmiletic this PR implements auto-replacement of tags – this should also solve the problem you described ☺️

[vedranmiletic]

@squidfunk that's great, eagerly waiting for the next release!

[squidfunk]

Looks like it's going to be released tomorrow.

[squidfunk]

Released as part of 9.4.2.