Option to add callback to lens instead of override_lens

[petertriho]

Is your feature request related to a problem? Please describe. Not really, but would like to make it cleaner to integrate with my own plugin.

Describe the solution you'd like I was wondering if it would be possible for you to add something like "lens_callback" (similar to override_lens) but instead of overriding, it just calls the function instead

[kevinhwang91]

Do you want to get the position range after the index is built?

[petertriho]

Yes, that's the intention. Pretty much just want the list of positions after a search

[kevinhwang91]

Please try dev branch. And add

    require('hlslens').setup({
        build_position_cb = function(plist, bufnr, changedtick, pattern)    
            require('scrollbar').search_handler.show(plist.start_pos)
        end
    })

If you have no problem, I will improve the documentation.

[petertriho]

Works perfectly, thank you! I'll update my docs as well when you merge it into the main branch

[kevinhwang91]

Merged.

Only fire once if the index is built instead of moving the cursor, please note.

changedtick or pattern is changed, the index will refresh and fire this callback.