A pane restored with unsaved text is asked about before it is thrown away

Exit, Restore, Del and get warn only about a pane edited since it was
opened, which its saved hash says (set at its first edit). A pane a Dump
kept dirty came back with no hash, so a restored session quit at once
over it. Restoring one dirty now gives it a hash its text does not match.

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

1 files changed, 34 insertions, 0 deletions

diff --git a/src/dump.zig b/src/dump.zig
index 88a95994..54b77451 100644
--- a/src/dump.zig
+++ b/src/dump.zig
@@ -949,3 +949,37 @@ test "a restored pane keeps its dot, as acme's dump keeps a window's" {
     try std.testing.expectEqual(@as(u32, 4), dot.q0);
     try std.testing.expectEqual(@as(u32, 7), dot.q1);
 }
+
+test "a pane restored with unsaved text is asked about by Exit, Restore, Del and get" {
+    const gpa = std.testing.allocator;
+    const p = try Pardes.init(gpa, .{ .tty_only = true });
+    defer p.deinit();
+    const pane = try p.setTestFile("saved\n");
+    _ = ctlfs.pane.spliceBody(p, pane, 0, 0, "unsaved ").?;
+    try std.testing.expect(pane.file.?.revision != pane.file.?.saved_revision);
+    try dumpState(p);
+    // Restore reads its dump before it warns: one it can read.
+    var tmp = std.testing.tmpDir(.{});
+    defer tmp.cleanup();
+    try tmp.dir.writeFile(std.testing.io, .{ .sub_path = "d.zon", .data = p.dump_out.? });
+    var dir_buf: [4096]u8 = undefined;
+    const dir = dir_buf[0..try tmp.dir.realPath(std.testing.io, &dir_buf)];
+    var restore_line: [4200]u8 = undefined;
+    for ([_][]const u8{ "Exit", "Restore", "Del", "get" }) |word| {
+        const restored = try initFromDump(gpa, .{ .tty_only = true }, p.dump_out.?);
+        defer restored.deinit();
+        const id = for (restored.panes, 0..) |slot, i| {
+            if (slot) |candidate| if (candidate.file != null and candidate.file.?.output == null) break i;
+        } else return error.FileLost;
+        const th = @import("ninep/testing.zig");
+        const node = if (std.mem.eql(u8, word, "Del") or std.mem.eql(u8, word, "get"))
+            ctlfs.Node.of(restored.panes[id].?.serial, .ctl)
+        else
+            @intFromEnum(ctlfs.TopFile.ctl);
+        const line = if (std.mem.eql(u8, word, "Restore")) try std.fmt.bufPrint(&restore_line, "Restore {s}/d.zon\n", .{dir}) else if (std.mem.eql(u8, word, "Exit")) "Exit\n" else if (std.mem.eql(u8, word, "Del")) "Del\n" else "get\n";
+        const answer = th.wr(restored, node, line);
+        try std.testing.expectEqual(ctlfs.Status.err, answer.reply.status);
+        try std.testing.expect(std.mem.indexOf(u8, answer.reply.ename, "Modified") != null);
+        try std.testing.expect(!restored.quit and restored.panes[id] != null);
+    }
+}