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43 lines
1.1 KiB
43 lines
1.1 KiB
3 years ago
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-- MP
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-- These sources did all the work
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-- 1. https://vim.fandom.com/wiki/Remove_unwanted_spaces#Automatically_removing_all_trailing_whitespace
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-- 2. https://stackoverflow.com/questions/7495932/how-can-i-trim-blank-lines-at-the-end-of-file-in-vim
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local M = {}
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function M.clear_spaces()
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-- get tuple of cursor position before making changes
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local pos = vim.api.nvim_win_get_cursor( 0 )
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-- delete all whitespace, see source 1
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vim.cmd[[:%s/\s\+$//e]]
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-- delete all lines at end of buffer, see source 2
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vim.cmd[[:silent! 0;/^\%(\n*.\)\@!/,$d]]
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-- get row count after line deletion
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local end_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 empty lines at the end of the file
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when they were deleted), set the cursor
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row to the last line
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]]
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if pos[1] > end_row then
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pos[1] = end_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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return M
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