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38 lines
1.1 KiB
38 lines
1.1 KiB
local M = {}
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function M.setup()
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local tidy_grp = vim.api.nvim_create_augroup("tidy", { clear = true })
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vim.api.nvim_create_autocmd("BufWritePre", {
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group = tidy_grp,
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callback = function()
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local pos = vim.api.nvim_win_get_cursor(0)
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vim.cmd([[:keepjumps keeppatterns %s/\s\+$//e]])
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-- delete all lines at end of buffer, see source 2
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vim.cmd([[:keepjumps keeppatterns silent! 0;/^\%(\n*.\)\@!/,$d]])
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-- get row count after line deletion
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local last_row = vim.api.nvim_buf_line_count(0)
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--[[
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if the row value in the original cursor
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position tuple is greater than the
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line count after empty line deletion
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(meaning that the cursor was inside of
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the group of empty lines at the end of
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the file when they were deleted), set
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the cursor row to the last line.
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]]
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if pos[1] > last_row then
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pos[1] = last_row
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end
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vim.api.nvim_win_set_cursor(0, pos)
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end,
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})
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end
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return M
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