1 files changed, 28 insertions, 0 deletions
diff --git a/src/panes.zig b/src/panes.zig
index 9a6802d0..e41698bb 100644
--- a/src/panes.zig
+++ b/src/panes.zig
@@ -183,6 +183,34 @@ pub const Pane = struct {
     tty_filter: bool = false,
     msg: [256]u8 = undefined,
     msg_len: u16 = 0,
+    /// The transient lines this pane shows between its body and its tagline:
+    /// a builtin's message, the pending leader chord, a prompt waiting for
+    /// input. Rebuilt every frame from the state that owns each one, so a
+    /// line that goes away is simply not added again and the rest close the
+    /// gap -- there is no second copy of the truth to fall out of step. The
+    /// body layer reserves exactly `len` rows for them, the way it already
+    /// reserves rows for sticky context headers.
+    notices: Notices = .{},
+
+    pub const Notices = struct {
+        /// Painted bottom-up in this order, so a prompt keeps the row nearest
+        /// the tagline that it has always had, and its cursor with it.
+        pub const Kind = enum { message, leader, prompt };
+        pub const max = @typeInfo(Kind).@"enum".fields.len;
+
+        kinds: [max]Kind = undefined,
+        len: u8 = 0,
+
+        pub fn push(n: *Notices, kind: Kind) void {
+            if (n.len >= max) return;
+            n.kinds[n.len] = kind;
+            n.len += 1;
+        }
+
+        pub fn slice(n: *const Notices) []const Kind {
+            return n.kinds[0..n.len];
+        }
+    };
 
     pub fn clearPointerSelection(pane: *Pane, slot: usize) void {
         if (pane.pointer_selections[slot]) |selection| {