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fix(lsp): handle insertion of previous line (#17618)
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@ -138,10 +138,18 @@ local function compute_start_range(prev_lines, curr_lines, firstline, lastline,
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-- new lines(O), the new newline is inserted at the line indicated by
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-- new_lastline.
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if firstline == lastline then
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local line_idx
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local line = prev_lines[firstline - 1]
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byte_idx = #line + 1
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char_idx = compute_line_length(line, offset_encoding) + 1
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return { line_idx = firstline - 1, byte_idx = byte_idx, char_idx = char_idx }
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if line then
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line_idx = firstline - 1
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byte_idx = #line + 1
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char_idx = compute_line_length(line, offset_encoding) + 1
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else
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line_idx = firstline
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byte_idx = 1
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char_idx = 1
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end
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return { line_idx = line_idx, byte_idx = byte_idx, char_idx = char_idx }
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end
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-- If firstline == new_lastline, the first change occurred on a line that was deleted.
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@ -259,6 +259,25 @@ describe('incremental synchronization', function()
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}
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test_edit({""}, {"o"}, expected_text_changes, 'utf-16', '\n')
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end)
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it('insert a line above the current line', function()
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local expected_text_changes = {
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{
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range = {
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['start'] = {
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character = 0,
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line = 0
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},
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['end'] = {
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character = 0,
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line = 0
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}
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},
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rangeLength = 0,
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text = '\n'
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}
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}
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test_edit({""}, {"O"}, expected_text_changes, 'utf-16', '\n')
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end)
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end)
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describe('multi line edit', function()
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it('deletion and insertion', function()
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