feat(multicursor): cgn, failed insert-entry #42054

Problem:
- A failed motion in a replay (`vt;` where there is no `;`) flushes the
  rest of the replay, so `vt;cX` inserts `X` without changing the
  selection.
- If the Insert-entering cmd fails at a cursor (`ct;`, `cgn` with no
  match), the text is still inserted at the failed cursor.

Solution:
- `beep_flush()`: Don't flush typeahead (i.e. keys following the failed
  cmd) during mc-replay.
  - Aligns with interactively-typed behavior.
- Remove a cursor if its Insert-entering command aborts
  (`beep && !changedtick`).
  - This is particular to Insert-entering commands (`c{motion}`),
    because they are tricky. We don't usually remove cursors if
    a replayed cmd happens to fail at some cursors.

0 files changed, 0 insertions, 0 deletions