[Feature]: rainbow-blocks add underline to allow for both semantic / treesitter tokens and delimiter colouring

[OmegaLambda1998]

Neovim version

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Language affected

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Query

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Strategy

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Description

Would it be possible to configure rainbow-blocks such that they provide scope-level rainbow underlines, whilst still allowing for semantic / treesitter token highlighting?

[HiPhish]

Yes, it should be possible by defining custom highlight groups which only set the underline colour:

vim.api.nvim_set_hl(0, 'RainbowDelimiterRed', {underline = true, sp = 'red'})
vim.api.nvim_set_hl(0, 'RainbowDelimiterYellow', {underline = true, sp = 'yellow'})
vim.api.nvim_set_hl(0, 'RainbowDelimiterBlue', {underline = true, sp = 'blue'})
vim.api.nvim_set_hl(0, 'RainbowDelimiterGreen', {underline = true, sp = 'green'})
-- and so on...