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2023-10-04Significantly reduce memory used for deleting contiguous ranges backwards.Neil1-7/+17
Compresses sequences of same item in vectors by adding a count field. Fixes Notepad++ issue 13442. https://github.com/notepad-plus-plus/notepad-plus-plus/issues/13442
2023-10-04Preparatory changes for fix in next commit. Does not change Scintilla behaviour.Neil1-3/+5
Add tests for contiguous deletions in forward and backward directions. Use symbolic edition values. Rename InsertionSpan to ChangeSpan and insertions to changes as holds both insertions and deletions. Add ChangeStack::Check. Add comments.
2022-07-31Added change history which can display document changes (modified, saved, ...)Neil1-0/+112
in the margin or in the text.