2-1 chord argument falls back to other panes' selections: when the middle-drag pane has no selection of its own (kept left sel, else explicit v/x n/N), the active pane is checked first (it holds the most recently made selection), then slot order. New selarg.snap covers borrowing a kept left selection and a v selection from another pane; tutor updated.

1 files changed, 27 insertions, 9 deletions

diff --git a/src/pardes.zig b/src/pardes.zig
index 4750fa0b..c6513392 100644
--- a/src/pardes.zig
+++ b/src/pardes.zig
@@ -3538,16 +3538,34 @@ pub const Pardes = struct {
             .left => switch (m.kind) {
                 .press => {
                     // middle+left chord: a left press during a middle select-
-                    // drag captures the KEPT left selection as the execute's
-                    // argument; the middle drag keeps running to its release.
+                    // drag captures a selection as the execute's argument; the
+                    // middle drag keeps running to its release. The drag pane's
+                    // own selection wins; a pane with none borrows from the
+                    // OTHER panes (acme: the chord argument is whatever text is
+                    // selected, in any window) — the ACTIVE pane first (making
+                    // a selection focuses its pane, so it holds the most
+                    // recently made one), then slot order. Per pane a kept left
+                    // selection wins, else an explicit modal (v/x, n/N) one.
                     if (p.drag == .select and p.drag.select.button == .middle) {
-                        if (p.panes[p.drag.select.id]) |t| {
-                            const sl = t.sel[0];
-                            if (sl.state == .done) {
-                                if (p.chord_arg) |old| p.gpa.free(old);
-                                const txt = p.selectionText(t, sl) catch null;
-                                p.chord_arg = if (txt) |tx| (p.gpa.dupe(u8, tx) catch null) else null;
-                            }
+                        const did = p.drag.select.id;
+                        var txt: ?[]const u8 = null;
+                        var k: usize = 0;
+                        while (txt == null and k < p.panes.len + 2) : (k += 1) {
+                            const i = switch (k) {
+                                0 => did,
+                                1 => p.active,
+                                else => k - 2,
+                            };
+                            if (k > 0 and (i == did or (k > 1 and i == p.active))) continue;
+                            const t = p.panes[i] orelse continue;
+                            if (t.sel[0].state == .done)
+                                txt = p.selectionText(t, t.sel[0]) catch null
+                            else if ((t.vsel.active and t.vsel.explicit) or t.msel.active)
+                                txt = p.currentSelText(t);
+                        }
+                        if (txt) |tx| {
+                            if (p.chord_arg) |old| p.gpa.free(old);
+                            p.chord_arg = p.gpa.dupe(u8, tx) catch null;
                         }
                         return;
                     }