1 files changed, 7 insertions, 1 deletions

diff --git a/cmd/krino/render_test.go b/cmd/krino/render_test.go
index a964b43..1b2f8cc 100644
--- a/cmd/krino/render_test.go
+++ b/cmd/krino/render_test.go
@@ -406,9 +406,15 @@ func TestColumnsCountWideAndCombiningCharacters(t *testing.T) {
 	if n := cols("漢字"); n != 4 {
 		t.Errorf("cols(漢字) = %d, want 4", n)
 	}
-	if n := cols("éx"); n != 2 {
+	if n := cols("e\u0301x"); n != 2 {
 		t.Errorf("cols(e + combining acute + x) = %d, want 2", n)
 	}
+	// A format character is counted as one column: a terminal may draw it
+	// (a soft hyphen), and counting one too many only wraps a line early,
+	// while one too few lets it run past the edge (plan 11 review L4).
+	if n := cols("a\u00adb"); n != 3 {
+		t.Errorf("cols(a + soft hyphen + b) = %d, want 3", n)
+	}
 	if got := padCell("漢字", 6); got != "漢字  " {
 		t.Errorf("padCell(漢字, 6) = %q, want two spaces of padding", got)
 	}