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local userregs = require("vim.userregs")
-- Register name: "|"
-- This register represents the full contents of the current buffer.
-- Yank into it → saves the buffer.
-- Put from it → replaces the buffer contents.
local regname = "|"
--- Reads the full contents of the current buffer as a list of lines.
--- This is returned in the format expected by 'userregfunc'.
--- @return table a 'put' dictionary with `lines`, `type`, and `additional_data`
local function read_current_buffer()
local bufnr = vim.api.nvim_get_current_buf()
local lines = vim.api.nvim_buf_get_lines(bufnr, 0, -1, false)
return {
lines = lines,
type = "V", -- linewise register
additional_data = {},
}
end
--- Replaces the entire contents of the current buffer with the given content.
--- Used when yanking into the "|" register.
--- @param _ string -- register name (ignored here)
--- @param content table -- dictionary with `lines` from yankreg_T
local function write_current_buffer(_, content)
local bufnr = vim.api.nvim_get_current_buf()
vim.api.nvim_buf_set_lines(bufnr, 0, -1, false, content.lines or {})
end
-- Register the "|" register with the userregs framework
userregs.register_handler(regname, {
put = function(_) return read_current_buffer() end,
yank = write_current_buffer,
})
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