feature: Double-character labels for features like jump to line

[mystilleef]

Did you check the docs?

• I have read all the flash.nvim docs

Is your feature request related to a problem? Please describe.

HopLine is the last feature I need from Hop to completely ditch it. At the moment Flash does not support double-character labels, so it cannot label the beginning of all lines in a document.

Describe the solution you'd like

Maybe provide a way to temporarily override the labels list to allow double characters for certain jumps, like jump-to-line.

It doesn't even have to be supported by default. It should just exist for edge cases for users who want to do weird stuff, like implementing jump-to-line in Flash.

Alternatively, you could just implement FlashLine as an edge-case solution. That way you can restrict double-character labels to just FlashLine until double-characters can be available universally, if possible.

Describe alternatives you've considered

The jump-to-line example works but does not label all the visible lines in documents due to the limited number of single-character labels.

The only alternative so far is to use HopLine from Hop or a similar feature from other jump plugins.

Additional context

Screenshot of flash jump-to-line just labeling a few lines.

[folke]

You disabled lower-case labels? Something must be off with your config of flash.

You should at least get 52 labels with that code

[mystilleef]

Interesting. I had set uppercase to false because I was formatting labels with opts.match.label:upper() and I assumed that would conflict with uppercase if it were set to true.

After enabling uppercase and disabling my custom formatting, I get more labels. Unfortunately, still not enough. Also, it looks like folds might be consuming some of the labels. I've attached my config below.

{
    "folke/flash.nvim",
    opts = {
      label = {
        uppercase = true,
        -- format = function(opts)
        --   return { { opts.match.label:upper(), opts.hl_group } }
        -- end,
      },
      modes = { treesitter = { highlight = { backdrop = true } } },
      jump = { autojump = true, nohlsearch = true },
    },
    keys = {
      ...
      {
        "<leader>l",
        mode = { "n", "x", "o" },
        function()
          require("flash").jump({
            search = { mode = "search", max_length = 0 },
            label = { after = { 0, 0 } },
            pattern = "^",
          })
          -- vim.schedule(require("user.utils").schedule_command)
        end,
        desc = "Label beginning of line",
      },
      ...
    },
  }

Screenshot of labels with unfolded code

Screenshot of labels with folded code

[folke]

@mystilleef I've added better handling of folds so that labels won't be callculated for folded lines

[mystilleef]

Excellent!