An error on a column's ctl, exec or rmdir names that file in the log

noteError named every column node col/<serial>/tag, so a refused ctl write
or rmdir pointed at the tag. It now names col/<serial>/ctl, /exec, /tag or
the directory itself.

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

1 files changed, 3 insertions, 1 deletions

diff --git a/src/ninep/cols.zig b/src/ninep/cols.zig
index b6dc7d26..49df715a 100644
--- a/src/ninep/cols.zig
+++ b/src/ninep/cols.zig
@@ -257,10 +257,12 @@ test "a column's ctl and exec act on it as its tag would, and rmdir closes it on
     try testing.expectEqual(tree.Status.ok, th.wr(p, Node.ofCol(empty, .ctl), "New\n").reply.status);
     try testing.expectEqual(@as(usize, 1), p.col_n[1]);
     try testing.expectEqual(E.INVAL, th.wr(p, Node.ofCol(empty, .ctl), "Exit\n").errno());
+    var rec: [64]u8 = undefined;
+    try testing.expect(th.logHas(p, try std.fmt.bufPrint(&rec, "err - col/{d}/ctl: a column's ctl takes", .{empty})));
     // rmdir refuses a column with a pane, and says why.
     const full = th.call(p, .{ .tag = 1, .op = .release, .node = Node.ofCol(empty, .dir), .remove = true });
     try testing.expectEqual(E.NOTEMPTY, full.errno());
-    try testing.expect(th.logHas(p, "column not empty"));
+    try testing.expect(th.logHas(p, try std.fmt.bufPrint(&rec, "err - col/{d}: column not empty", .{empty})));
     // exec runs a word as a click in that column's tag: Delcol closes it.
     try testing.expectEqual(tree.Status.ok, th.wr(p, Node.ofCol(empty, .exec), "Delcol\n").reply.status);
     try testing.expectEqual(@as(?usize, null), layout.columnBySerial(p, empty));