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local userregs = require("vim.userregs")
-- ASCII-safe register name
local regname = "\22"
-- Return the contents of the last visual selection
local function read_last_visual()
local bufnr = vim.api.nvim_get_current_buf()
local start_pos = vim.fn.getpos("'<")
local end_pos = vim.fn.getpos("'>")
if not start_pos or not end_pos then
vim.notify("[userregs] No visual selection", vim.log.levels.WARN)
return { lines = {}, type = "V" }
end
local start_lnum = start_pos[2] - 1 -- 0-indexed
local end_lnum = end_pos[2] -- end line is exclusive
local lines = vim.api.nvim_buf_get_lines(bufnr, start_lnum, end_lnum, false)
return {
lines = lines,
type = "V", -- Assume linewise for now
additional_data = {},
}
end
-- Replace the last visual selection with new content
local function write_last_visual(_, content)
local bufnr = vim.api.nvim_get_current_buf()
local start_pos = vim.fn.getpos("'<")
local end_pos = vim.fn.getpos("'>")
if not start_pos or not end_pos then
vim.notify("[userregs] No visual selection to write into", vim.log.levels.ERROR)
return
end
local start_lnum = start_pos[2] - 1
local end_lnum = end_pos[2]
-- Replace the range with the new content
vim.api.nvim_buf_set_lines(bufnr, start_lnum, end_lnum, false, content.lines or {})
end
userregs.register_handler(regname, {
put = function() return read_last_visual() end,
yank = write_last_visual,
})
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