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feat(extmarks): add "undo_restore" flag to opt out of undo-restoring

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It is a design goal of extmarks that they allow precise tracking
of changes across undo/redo, including restore the exact positions
after a do/undo or undo/redo cycle. However this behavior is not useful
for all usecases. Many plugins won't keep marks around for long after
text changes, but uses them more like a cache until some external source
(like LSP semantic highlights) has fully updated to changed text and
then will explicitly readjust/replace extmarks as needed.

Add a "undo_restore" flag which is true by default (matches existing
behavior) but can be set to false to opt-out of this behavior.

Delete dead u_extmark_set() code.
This commit is contained in:
bfredl
2023-11-03 12:26:38 +01:00
parent 92e99bb105
commit 68cb4a7405
10 changed files with 101 additions and 54 deletions
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2
src/nvim/marktree.c
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@@ -2007,7 +2007,7 @@ void marktree_put_test(MarkTree *b, uint32_t ns, uint32_t id, int row, int col,
int end_row, int end_col, bool end_right)
{
MTKey key = { { row, col }, ns, id, 0,
mt_flags(right_gravity, 0), 0, NULL };
mt_flags(right_gravity, 0, false), 0, NULL };
marktree_put(b, key, end_row, end_col, end_right);
}