A looked word selects its next place in its own pane, as acme's look3

A plain word looked at (a look write, a right click, an ML record written
back) opened another identically named +Search pane each time, until the
panes ran out, and never wrapped. As acme's look3 searches the text for
it (look.c:210), it now selects the word's next place in that pane after
the dot, wrapping at the end, and opens nothing. LookWord list, a new
root setting, keeps the +Search listing (search is the default); the
rsearch snapshot and an output test that walk the listing say LookWord
list. (The leader-path check over every builtin gets a comptime
branch quota, as one more builtin took the GUI build past the default.)

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

1 files changed, 23 insertions, 0 deletions

diff --git a/src/ninep/ctl.zig b/src/ninep/ctl.zig
index fac1e5eb..f40825e3 100644
--- a/src/ninep/ctl.zig
+++ b/src/ninep/ctl.zig
@@ -1588,3 +1588,26 @@ test "a file changed on disk under unsaved edits is not reloaded: it says so, ge
     try testing.expect(std.mem.indexOf(u8, first.reply.ename, "modified on disk since read") != null);
     try testing.expect(wr(p, Node.of(serial, .ctl), "Save\n").saved);
 }
+
+test "a looked word is found in its own pane, next place after the dot, wrapping, and opens no pane" {
+    const p = try withFile(testing.allocator, "foo x foo y\n");
+    defer p.deinit();
+    const serial = serialOf(p);
+    const look_node = Node.of(serial, .look);
+    const dot = Node.of(serial, .dot);
+    var count: usize = 0;
+    for (p.panes) |slot| count += @intFromBool(slot != null);
+    for ([_][]const u8{ "          0           3 ", "          6           9 ", "          0           3 " }) |want| {
+        try testing.expectEqual(Status.ok, wr(p, look_node, "foo\n").reply.status);
+        try testing.expectEqualStrings(want, rd(p, dot, 0, 64).bytes);
+    }
+    var after: usize = 0;
+    for (p.panes) |slot| after += @intFromBool(slot != null);
+    try testing.expectEqual(count, after);
+    // LookWord list: the +Search listing, as before.
+    try testing.expect(p.executeBuiltinLine(0, "LookWord list"));
+    try testing.expectEqual(Status.ok, wr(p, look_node, "foo\n").reply.status);
+    after = 0;
+    for (p.panes) |slot| after += @intFromBool(slot != null);
+    try testing.expect(after > count);
+}