A look's miss repeats the path whole, up to 256 bytes

The miss message clipped what was looked at to 48 bytes, mid-word, and a
path past 160 bytes turned the has-no-line message into a bare no match.
Both now carry up to 256 bytes, cut on a character boundary with an
ellipsis past that.

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

1 files changed, 14 insertions, 0 deletions

diff --git a/src/ninep/ctl.zig b/src/ninep/ctl.zig
index caa3f009..65878feb 100644
--- a/src/ninep/ctl.zig
+++ b/src/ninep/ctl.zig
@@ -997,6 +997,20 @@ test "the root look's file:/re/ goes on from the dot, and a miss leaves the dot
     try testing.expectEqualStrings("          0           3 ", rd(p, dot, 0, 64).bytes);
 }
 
+test "a look's miss repeats the path whole up to 256 bytes, then cuts it with an ellipsis" {
+    const gpa = testing.allocator;
+    const p = try withFile(gpa, "x\n");
+    defer p.deinit();
+    const root = @intFromEnum(tree.TopFile.look);
+    const long = "some/deeply/nested/directory/that/goes/on/and/on/with/a_rather_long_file_name.txt";
+    var line: [512]u8 = undefined;
+    _ = wr(p, root, try std.fmt.bufPrint(&line, "{s}\n", .{long}));
+    try testing.expect(th.logHas(p, try std.fmt.bufPrint(&line, "look: no match for \"{s}\"\n", .{long})));
+    const huge = "é" ** 150; // 300 bytes: cut at 256, between characters
+    _ = wr(p, root, huge ++ "\n");
+    try testing.expect(th.logHas(p, "look: no match for \"" ++ "é" ** 128 ++ "…\"\n"));
+}
+
 test "exec runs a builtin at the pane and records the pane it acted on" {
     const gpa = testing.allocator;
     const p = try withFile(gpa, "Msg fs-ran\n");