Typing no longer round-trips. Plain chars, Enter, and Tab (whose
default bindings reduce to a plain insert_char) apply to the local
Loro replica immediately and ship as FrontendEvent::CrdtOp:
- optimistic_crdt_insert: gated on DispatchIdle + a fresh CursorByte
+ no own-window selection (CUA type-over must round-trip into the
region-aware commands, which a raw op bypasses). Predicted-cursor
floor ignores stale in-flight CursorBytes; round-trip keys typed
behind unconfirmed inserts defer until the floor confirms.
Optimistic Enter scroll-follows immediately and re-declares the
scoped viewport.
- attach: a writer thread owns the socket write half, so the winit
thread never blocks on daemon backpressure; send_crdt_op added.
- Incremental text maintenance: Loro text deltas patch current_text
and per-line byte/char offset tables in place (no whole-rope
materialization per keystroke); cached spans/decorations/adornments
translate through each edit.
- Unconfirmed-edit journal: incoming StyleSpans/Decorations frames
carry the daemon's CRDT version scalar as generation; the GPU
computes the same per-peer counter sum locally, prunes confirmed
entries, and translates the frame's ranges through the rest — a
frame computed before an in-flight keystroke no longer repaints the
viewport's colors a few bytes left for one frame.
- Extend-at-end heuristic: a span ending exactly at a pure insert
point extends over the typed text, so new chars inherit the
preceding token's color instead of blinking default until the next
parse settles.
- Per-edit viewport re-declaration narrowed to origin moves;
PMACS_GPU_DEBUG_APPLY times per-message apply cost.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Levi Neuwirth
d380358f2c