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atagen <boss@atagen.co>2026-10-25 10:49 UTC

1 file changed+4-2

timeline: describe what a history flush now publishes

The flush_history doc promised purely incremental updates, while the cache still sends a Reset when its loaded window stops extending what subscribers hold.

Modified file: crates/matrix-sdk-ui/src/timeline/mod.rs+4 additions−2 deletions@@ -230,8 +230,10 @@ impl Timeline {
     /// Wait for earlier history operations on the room cache, then until this
     /// live timeline has applied every update they published.
     ///
-    /// Updates apply incrementally, keeping read receipts and item ids, and
-    /// only a lagged subscriber falls back to replacing the timeline.
+    /// History commits arrive as inserts into the window the cache has loaded,
+    /// keeping read receipts and item ids. The cache resets the timeline only
+    /// when that window no longer extends what it already published, and a
+    /// lagged subscriber falls back to replacing the timeline.
     pub async fn flush_history(&self) -> Result<(), Error> {
         let Some(flush) = &self.history_flush else {
             return Ok(());

matrix-rust-sdk

Commit 7f191fff1b10

Commit `7f191fff1b10`