feat(i18n): localize failure prefix

Co-Authored-By: Virgil <virgil@lethean.io>

grammar.go

@@ -913,11 +913,21 @@ func ActionFailed(verb, subject string) string {
 	if verb == "" {
 		return ""
 	}
-	verb = renderWord(currentLangForGrammar(), verb)
+	lang := currentLangForGrammar()
+	verb = renderWord(lang, verb)
+	prefix := failedPrefix(lang)
 	if subject == "" {
-		return "Failed to " + verb
+		return prefix + " " + verb
 	}
-	return "Failed to " + verb + " " + renderWord(currentLangForGrammar(), subject)
+	return prefix + " " + verb + " " + renderWord(lang, subject)
+}
+
+func failedPrefix(lang string) string {
+	prefix := renderWord(lang, "failed_to")
+	if prefix == "" || prefix == "failed_to" {
+		return "Failed to"
+	}
+	return prefix
 }
 
 // Label returns a label with suffix: "Status:" (EN) or "Statut :" (FR)

grammar_test.go

@@ -841,6 +841,26 @@ func TestActionFailed_RespectsWordMap(t *testing.T) {
 	}
 }
 
+func TestActionFailedFrenchLocale(t *testing.T) {
+	prev := Default()
+	svc, err := New()
+	if err != nil {
+		t.Fatalf("New() failed: %v", err)
+	}
+	SetDefault(svc)
+	t.Cleanup(func() {
+		SetDefault(prev)
+	})
+
+	if err := SetLanguage("fr"); err != nil {
+		t.Fatalf("SetLanguage(fr) failed: %v", err)
+	}
+
+	if got, want := ActionFailed("supprimer", ""), "Impossible de supprimer"; got != want {
+		t.Fatalf("ActionFailed(%q, %q) = %q, want %q", "supprimer", "", got, want)
+	}
+}
+
 func TestGrammarData_Signals(t *testing.T) {
 	svc, err := New()
 	if err != nil {

locales/fr.json

@@ -92,7 +92,8 @@
 			"ssh": "SSH",
 			"ssl": "SSL",
 			"pr": "PR",
-			"ci": "CI"
+			"ci": "CI",
+			"failed_to": "Impossible de"
 		},
 		"punct": {
 			"label": " :",