@p<serial>:<address> takes any sam address, as file:<address> does

@p<serial> took a line spot but an address after it (/re/, #n, $, 0/re/,
a range) was dropped, the name failing the file check, and an unknown
serial fell through to a search. The pane is now addressed like a file;
a miss and a serial no pane has each log an err, and look reads back
empty.

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

1 files changed, 27 insertions, 0 deletions

diff --git a/src/ninep/ctl.zig b/src/ninep/ctl.zig
index d623296b..bed53473 100644
--- a/src/ninep/ctl.zig
+++ b/src/ninep/ctl.zig
@@ -1890,3 +1890,30 @@ test "a word written to a raw terminal's look is listed as in normal mode" {
     const made = p.panes[p.paneBySerial(try std.fmt.parseInt(u32, said, 10)).?].?;
     try testing.expect(made.file.?.output.?.from == .search);
 }
+
+test "@p<serial>:<address> takes any sam address; a miss and an unknown serial are errs" {
+    const p = try withFile(testing.allocator, "foo x foo y\nbar\n");
+    defer p.deinit();
+    const serial = serialOf(p);
+    const root = @intFromEnum(tree.TopFile.look);
+    const dot = Node.of(serial, .dot);
+    const Case = struct { addr: []const u8, want: []const u8 };
+    for ([_]Case{
+        .{ .addr = "0/foo/", .want = "          0           3 " },
+        .{ .addr = "/foo/", .want = "          6           9 " },
+        .{ .addr = "#12,#15", .want = "         12          15 " },
+        .{ .addr = "$", .want = "         16          16 " },
+        .{ .addr = "1,2", .want = "          0          16 " },
+    }) |c| {
+        var line: [64]u8 = undefined;
+        try testing.expectEqual(Status.ok, wr(p, root, try std.fmt.bufPrint(&line, "@p{d}:{s}\n", .{ serial, c.addr })).reply.status);
+        try testing.expectEqualStrings(c.want, rd(p, dot, 0, 64).bytes);
+    }
+    var line: [64]u8 = undefined;
+    _ = wr(p, root, try std.fmt.bufPrint(&line, "@p{d}:/zzqq/\n", .{serial}));
+    try testing.expect(th.logHas(p, "look: no match for regexp"));
+    try testing.expectEqualStrings("", rd(p, root, 0, 64).bytes);
+    _ = wr(p, root, "@p999:/foo/\n");
+    try testing.expect(th.logHas(p, "look: no pane @p999"));
+    try testing.expectEqualStrings("", rd(p, root, 0, 64).bytes);
+}