Lua neovim plugin load nvim_buf_clear_namespace when textchange

Question

I started using neovim recently and for a learning Example i tried to create a basic plugin to update packages for node modules inside the package.json

The idea is when the text changes or when trying to undo i clear the buffer.

Calling this function : lua Clear_highlights() do the job but it's seems when the text changes or undo seems not triggering the function Clear_highlights() am for sure missing something if someone can help me catch this will be awesome.

Thank you.

line 20 : Github repo

-- Clear buffer
Clear_highlights = function()
    vim.api.nvim_buf_clear_namespace(0, require("nodePackageCheck").Config.get_namespace_id(), 0, -1)
end

vim.cmd([[autocmd! TextChanged,TextChangedI, BufWritePost  * lua Clear_highlights()]])

Justin M. Keyes · Accepted Answer · 2023-06-20 06:54:51Z

2

vim.cmd([[autocmd! TextChanged,TextChangedI, BufWritePost  * lua Clear_highlights()]])

autocmd! is for deleting handlers/groups, not defining them. Remove the bang (!).
Random whitespace confuses vim's parser: here it treats BufWritePost as the "pattern", and * as the start of the handler (command).

Try this instead:

vim.cmd([[autocmd TextChanged,TextChangedI,BufWritePost * lua Clear_highlights()]])

answered Jun 20, 2023 at 6:54

Justin M. Keyes

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1 Comment

Aziz.G Over a year ago

It does what i want thanks for the explaining.

Aziz.G · Accepted Answer · 2023-07-12 04:52:01Z

0

My final solution was a remapping undo in normal mode and call Clear_highlights() with.

vim.api.nvim_set_keymap("n", "u", ":undo<CR>:lua Clear_highlights()<CR>", { noremap = true, silent = true })

answered Jul 12, 2023 at 4:52

Aziz.G

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