Restore keeps each pane's dot, as acme's dump does

A restored text pane came back with its caret at its view's top, whatever
had been selected. The dump now keeps each text pane's dot, q0 and q1 as
acme's keeps a window's, and Restore puts it back without moving the view
it kept. Two look-walk tests that restored and walked on now start from the
match they were on.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/File.zig b/src/File.zig
index 929e33bf..6a1ac319 100644
--- a/src/File.zig
+++ b/src/File.zig
@@ -814,6 +814,14 @@ pub fn restore(p: *Pardes, id: usize, src: dump.Pane) !*Pane {
     pane.file.?.tree_context = saved.tree_context and supportsContext(pane);
     pane.body.cur_pinned = true;
     pane.body.cur_row = @intCast(src.scroll);
+    // Its dot as it was, where the view the dump kept shows it.
+    if (saved.dot) |dot| if (dot[0] <= dot[1] and dot[1] <= content.len) {
+        const a = modal.positionAt(content, dot[0]);
+        const h = modal.positionAt(content, if (dot[1] > dot[0]) modal.prevGrapheme(content, dot[1]) else dot[0]);
+        pane.body.vsel = .{ .active = dot[1] > dot[0], .row = @intCast(a.row), .col = @intCast(a.col), .explicit = true };
+        pane.body.cur_row = @intCast(h.row);
+        pane.body.cur_col = @intCast(h.col);
+    };
     pane.cols = @max(1, src.cols);
     pane.rows = @max(1, src.rows);
     if (output == null and filesystem.localPath(path) != null) p.emit(.{ .watch = .{ .pane = @intCast(id), .on = true, .mode = .baseline_disk } });