1 files changed, 14 insertions, 4 deletions
diff --git a/src/panes.zig b/src/panes.zig
index 47582692..8ca2bb4d 100644
--- a/src/panes.zig
+++ b/src/panes.zig
@@ -27,8 +27,10 @@ pub const Pane = struct {
     /// The words that throw unsaved text away (builtins.zig warnModified).
     pub const Discarding = enum { Exit, Restore, get };
 
-    /// One mouse selection (block-shaped), per button. c/r are text-area relative;
-    /// r counts from the tag's first row (the body starts at Pane.tag_rows).
+    /// One mouse sweep, per button: the press (c0, r0) and where it is now
+    /// (c1, r1), a stream between them as acme's (edit.sweepCols). c/r are
+    /// text-area relative; r counts from the tag's first row (the body
+    /// starts at Pane.tag_rows).
     pub const Sel = struct {
         state: enum { none, dragging, done } = .none,
         source_id: u64 = 0,
@@ -38,12 +40,15 @@ pub const Pane = struct {
         r1: i32 = 0,
     };
 
-    /// A rectangle keeps one source span per rendered row. Wrapped segments
-    /// remain separate rows when copied, even when they share a source line.
+    /// A captured sweep keeps one source span per rendered row. Wrapped
+    /// segments remain separate rows when copied, even when they share a
+    /// source line.
     pub const PointerRow = struct {
         row: i32,
         lo: usize,
         hi: usize,
+        /// Not the sweep's last row: its highlight runs to the right edge.
+        to_edge: bool = false,
         prefix: [32]u8 = @splat(0),
         prefix_len: u8 = 0,
         raw_terminal: bool = false,
@@ -181,6 +186,11 @@ pub const Pane = struct {
     /// scrolls to keep its caret in view while it has the keyboard; pointer
     /// rows count from this line, not the tag's first.
     tag_top: u16 = 0,
+    /// The tag shows all its rows (acme's `tagexpand`, on by default); off,
+    /// one row, as acme's Tagup leaves it. Down on the
+    /// tag's last line and Up on its first, typing, or Alt-Down and Alt-Up
+    /// in the tag, as acme's arrows in a tag (plan9port text.c:776).
+    tag_expanded: bool = true,
     /// How long the tag's computed prefix was when its positions were last
     /// placed. They count from the start of the prefix, so when it grows or
     /// shrinks (a rename, the dirty marker, a PDF's page) what follows it