dotfiles/.config/nvim/lua/core/autocommands.lua

--------------------------------------------
--- Commands ---

-- Prevent typo
vim.cmd [[
	cnoreabbrev <expr> W (getcmdtype() is# ":" && getcmdline() is# "W") ? ("w") : ("W")
	cnoreabbrev <expr> Q (getcmdtype() is# ":" && getcmdline() is# "Q") ? ("q") : ("Q")
	cnoreabbrev <expr> WQ (getcmdtype() is# ":" && getcmdline() is# "WQ") ? ("wq") : ("WQ")
	cnoreabbrev <expr> Wq (getcmdtype() is# ":" && getcmdline() is# "Wq") ? ("wq") : ("Wq")
]]

--------------------------------------------
--- Autocommands ---

-- Cut off trailing whitespace and trailing blank lines
local core = require("core.functions")
vim.api.nvim_create_autocmd({ "BufWritePre" }, {
	pattern = "*",
	callback = core.trim_buffer,
})

-- Highlight on yank
--  See `:help vim.highlight.on_yank()`
local highlight_group = vim.api.nvim_create_augroup("YankHighlight", { clear = true })
vim.api.nvim_create_autocmd("TextYankPost", {
	pattern = "*",
	group = highlight_group,
	callback = function() vim.highlight.on_yank() end,
})

-- Show message when autosaving
local group = vim.api.nvim_create_augroup('autosave', {})
vim.api.nvim_create_autocmd('User', {
    pattern = 'AutoSaveWritePost',
    group = group,
    callback = function(opts)
        if opts.data.saved_buffer ~= nil then
            local filename = vim.api.nvim_buf_get_name(opts.data.saved_buffer)
            vim.notify("Wrote " .. filename, vim.log.levels.INFO)
        end
    end,
})