diff --git a/completion_test.go b/completion_test.go
index 0db19f5..b609d49 100644
--- a/completion_test.go
+++ b/completion_test.go
@@ -101,3 +101,37 @@ func TestEveryValueFlagCompletes(t *testing.T) {
 	}
 	walk(newRootCmd())
 }
+
+// TestRegisterKeepsOwnCompletion: a flag whose command registered a completion
+// itself keeps it; the walker fills in only the flags without one.
+func TestRegisterKeepsOwnCompletion(t *testing.T) {
+	c := &cobra.Command{Use: "x", Run: func(*cobra.Command, []string) {}}
+	c.Flags().String("parity", "", "parity")
+	own := cobra.FixedCompletions([]string{"mine"}, cobra.ShellCompDirectiveNoFileComp)
+	if err := c.RegisterFlagCompletionFunc("parity", own); err != nil {
+		t.Fatal(err)
+	}
+	registerCompletions(c)
+	fn, ok := c.GetFlagCompletionFunc("parity")
+	if !ok {
+		t.Fatal("--parity lost its completion")
+	}
+	if got, _ := fn(c, nil, ""); !slices.Equal(got, []string{"mine"}) {
+		t.Fatalf("--parity completes %v, want the command's own [mine]", got)
+	}
+}
+
+// TestCompletePointNamesWithoutUsableModel: --point offers nothing when the
+// command has no --model flag or its value is not a model ID.
+func TestCompletePointNamesWithoutUsableModel(t *testing.T) {
+	noModel := &cobra.Command{Use: "x"}
+	if got, directive := completePointNames(noModel, nil, ""); got != nil || directive != cobra.ShellCompDirectiveNoFileComp {
+		t.Errorf("without --model: %v %v", got, directive)
+	}
+
+	badModel := &cobra.Command{Use: "x"}
+	badModel.Flags().String("model", "inverter", "model")
+	if got, directive := completePointNames(badModel, nil, ""); got != nil || directive != cobra.ShellCompDirectiveNoFileComp {
+		t.Errorf("--model inverter: %v %v", got, directive)
+	}
+}
diff --git a/internal/buildinfo/buildinfo_test.go b/internal/buildinfo/buildinfo_test.go
index f72fa58..3d2f5ba 100644
--- a/internal/buildinfo/buildinfo_test.go
+++ b/internal/buildinfo/buildinfo_test.go
@@ -139,3 +139,12 @@ func TestLibrariesFormatting(t *testing.T) {
 		}
 	}
 }
+
+func TestSetReplacesLinkTimeValues(t *testing.T) {
+	setVars(t, "", "", "", "", nil)
+	Set("v1.2.3", "v1.2.3", "abc123", "2026-11-07T10:00:00Z")
+	got := Get("tool")
+	if got.Version != "1.2.3" || got.Tag != "v1.2.3" || got.Commit != "abc123" || got.Built != "2026-11-07T10:00:00Z" {
+		t.Fatalf("after Set: %+v", got)
+	}
+}