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37 lines
881 B
37 lines
881 B
3 years ago
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local core = require "core"
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local command = require "core.command"
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local Doc = require "core.doc"
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local function trim_trailing_whitespace(doc)
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local cline, ccol = doc:get_selection()
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for i = 1, #doc.lines do
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local old_text = doc:get_text(i, 1, i, math.huge)
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local new_text = old_text:gsub("%s*$", "")
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-- don't remove whitespace which would cause the caret to reposition
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if cline == i and ccol > #new_text then
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new_text = old_text:sub(1, ccol - 1)
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end
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if old_text ~= new_text then
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doc:insert(i, 1, new_text)
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doc:remove(i, #new_text + 1, i, math.huge)
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end
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end
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end
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command.add("core.docview", {
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["trim-whitespace:trim-trailing-whitespace"] = function()
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trim_trailing_whitespace(core.active_view.doc)
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end,
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})
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local save = Doc.save
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Doc.save = function(self, ...)
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trim_trailing_whitespace(self)
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save(self, ...)
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end
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