Document tuple used in CommitList.marked

Author: peso

src/components/commitlist.rs

@@ -45,6 +45,9 @@ pub struct CommitList {
 	items: ItemBatch,
 	highlights: Option<Rc<IndexSet<CommitId>>>,
 	commits: IndexSet<CommitId>,
+	/// The marked commits.
+	/// `self.marked[].0` holds the commit index into `self.items.items` - used for ordering the list.
+	/// `self.marked[].1` is the commit id of the marked commit.
 	marked: Vec<(usize, CommitId)>,
 	scroll_state: (Instant, f32),
 	tags: Option<Tags>,