A rename alone does not make a pane dirty

Any rename marked the pane dirty (saved revision one back), while the
guards ask only whether its text was ever edited: /index said dirty for a
pane Exit let go without asking. The name is no edit now, so /index, the
guards and Restore agree; Save writes under the new name all the same.

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

1 files changed, 4 insertions, 3 deletions

diff --git a/src/ninep/ctl.zig b/src/ninep/ctl.zig
index 0b1ec194..8cf4f0a8 100644
--- a/src/ninep/ctl.zig
+++ b/src/ninep/ctl.zig
@@ -1417,9 +1417,10 @@ test "get reloads the pane from disk and reports a missing file without losing d
     try testing.expectEqualStrings("from disk\n", pane.file.?.content);
     try testing.expect(!pane_files.dirtyOf(pane));
     try testing.expect(pane.file.?.history.undo_len > 0);
-    // What it had (renamed, so dirty) was thrown away for it: logged.
+    // Renamed but never edited, it was clean: nothing thrown away, nothing
+    // logged as reloaded over edits.
     var reloaded: [32]u8 = undefined;
-    try testing.expect(th.logHas(p, try std.fmt.bufPrint(&reloaded, "changed {d} reloaded\n", .{serial})));
+    try testing.expect(!th.logHas(p, try std.fmt.bufPrint(&reloaded, "changed {d} reloaded\n", .{serial})));
 
     _ = wr(p, Node.of(serial, .name), try std.fmt.bufPrint(&name, "{s}/missing.txt\n", .{directory}));
     _ = wr(p, Node.of(serial, .body), "unsaved\n");
@@ -1440,7 +1441,7 @@ test "exec Save writes the named file through the host" {
     const serial = serialOf(p);
     const pane = p.panes[0].?;
     try testing.expectEqual(Status.ok, wr(p, Node.of(serial, .name), "/tmp/renamed.txt\n").reply.status);
-    try testing.expect(pane_files.dirtyOf(pane));
+    try testing.expect(!pane_files.dirtyOf(pane)); // a name alone is no edit; Save writes all the same
     const saved = wr(p, Node.of(serial, .exec), "Save\n");
     try testing.expectEqual(Status.ok, saved.reply.status);
     try testing.expect(saved.saved);