Append Text To The End Of A Neovim File Buffer With Lua

The neovim lua function ` nvim _ buf _ set _ lines() [TODO: Code shorthand span ] can be used to append lines to the end of a file buffer like this :

lua

local bufnr = 25
local start_line = -1
local end_line = -1
local strict_bounds = false
local lines = { "alfa bravo", "charlie delta" }

vim.api.nvim_buf_set_lines(
  bufnr, start_line, end_line, strict_bounds, lines
)

That will append one line with "alfa bravo" and another with "charlie delta" to the end of the buffer with id number of 25.

Details

[TODO: Code shorthand span ] - the buffer number of the buffer to append the text to. (You can get the buffer number of the current buffer with ` nvim _ get _ current _ buf() [TODO: Code shorthand span ] or for a specific window by the window number with ` nvim _ win _ get _ buf(WINDOW _ NUMBER) ` lua `
[TODO: Code shorthand span ] - the line on which to start inserting the text. Negative numbers start from the end of the file. So, [TODO: Code shorthand span ] starts at the last line
[TODO: Code shorthand span ] - the line to finish writing the text on. The start line is already at the end of the file, this also gets set to [TODO: Code shorthand span ] since there's nothing after that point
[TODO: Code shorthand span ] - determines if out - of - bounds attempts to write throw an error. This is generally set to false unless you have a specific use case that needs it
[TODO: Code shorthand span ] - the array of lines to output. Each line is its own element in the array