A root focus file names the pane with the keyboard and moves it; a pane's ctl says whether it is current

Scripts had no way to ask which pane has the keyboard or to give it one.
rio answers both through a window's wctl: its read ends with current or
notcurrent, and a write of current takes the keyboard (rio(4)). A pane's
ctl line now ends the same way, and since there is one keyboard for the
whole tree, /focus reads the focused pane's serial and takes a serial to
move the keyboard there, off any header that had it; a serial no pane has
fails with "no such window". fs-bench's stale readdir check is fixed too.

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

1 files changed, 3 insertions, 2 deletions

diff --git a/test/fs_bench.zig b/test/fs_bench.zig
index da9da47c..75b2eb11 100644
--- a/test/fs_bench.zig
+++ b/test/fs_bench.zig
@@ -123,7 +123,8 @@ fn checkReply(s: *Session, req: ctlfs.Req, reply: ctlfs.Reply) !void {
                 if (req.node == s.node(.ctl)) {
                     const tail = try checkNumbers(rest, &.{pane.cols});
                     if (!std.mem.startsWith(u8, tail, "default ")) return error.IncorrectReply;
-                    if ((try checkNumbers(tail[8..], &.{pardes.config.tab_width})).len != 0)
+                    const current = try checkNumbers(tail[8..], &.{pardes.config.tab_width});
+                    if (!std.mem.eql(u8, current, "current ") and !std.mem.eql(u8, current, "notcurrent "))
                         return error.IncorrectReply;
                 } else return error.UnmeasuredOperation;
             }
@@ -143,7 +144,7 @@ fn checkReply(s: *Session, req: ctlfs.Req, reply: ctlfs.Reply) !void {
                 const size: usize = bytes[off + 9];
                 off += 10;
                 if (dir > 1 or size == 0 or size > bytes.len - off) return error.IncorrectReply;
-                if (entry < names.len and (node != nodes[entry] or dir != @intFromBool(entry >= 7) or
+                if (entry < names.len and (node != nodes[entry] or dir != @intFromBool(entry >= 8) or
                     !std.mem.eql(u8, names[entry], bytes[off..][0..size]))) return error.IncorrectReply;
                 off += size;
             }