Replace on save

[gaoqiangks]

I want to execute a regex substituation on save like:

vim.api.nvim_create_autocmd("BufWritePre", { pattern = { "*.tex" }, command = "silent! % s/^\\s*$/%/g" })

How to achieve it in vscode-neovim?

Update: I found the following solution, which seems to work fine.

-- Write是vscode-neovim定义的命令, 调用vscode的保存. vim中连续执行多个命令的格式是 cmd1 | cmd2 | cmd3
commentsave = function()
    local ext = vim.fn.expand("%:e")
    if ext == "tex" then
        vim.cmd('silent! % s/^\\s*$/%/g')
    end
    vim.cmd('Write')
end
vim.api.nvim_create_user_command('CommentEmptyLinesAndSave', commentsave, { bang = true })

-- AlterCommand 可以将用户自定义的命令(大写开头)转化为内部命令的格式(小写开头)
vim.cmd("AlterCommand w[rite] CommentEmptyLinesAndSave")```