Neovim opening GitHub repos URLs

I have a very useful mapping in my Neovim: gx, which opens the URL under the cursor in the browser. I even wrote a blog post on it: Neovim Opening URLs

This blog post is a bit outdated,especially with the newly introduced way of setting up mappings through vim.keymap.set, but still works like a charm.

But there was one missing thing - open GitHub repos of Neovim plugins. For example, when you’re browsing your Packer configuration, plugins looks like this:

use {
		"nvim-telescope/telescope.nvim",
		requires = {
				{ "nvim-lua/popup.nvim" },
				{ "nvim-lua/plenary.nvim" },
				{ "nvim-telescope/telescope-github.nvim" },
				{ "kosayoda/nvim-lightbulb" },
				{ "antoinemadec/FixCursorHold.nvim" }
		}
}

I’ve refactored my old solution to do this:

local function url_repo()
    local cursorword = vim.fn.expand "<cfile>"
    if string.find(cursorword, "^[a-zA-Z0-9.-_]*/[a-zA-Z0-9.-_]*$") then
        cursorword = "https://github.com/" .. cursorword
    end
    return cursorword or ""
end

local open_command = "xdg-open"
if vim.fn.has "mac" == 1 then
    open_command = "open"
end
vim.keymap.set("n", "gx", function()
    vim.fn.jobstart({ open_command, url_repo() }, { detach = true })
end, attach_opts)

Here’s the logic:

1. Set the command to open URL based on the OS
2. Get the word under the cursor(:h expand)
3. Check if the work looks like <github_user/reponame>
4. If yes, add https://github.com/ to the word under the cursor
5. Set keymap to open the link through the vim.fn.jobstart

Overall, I’m pretty happy with how it works: