diff --git a/docs/forward-api.md b/docs/forward-api.md
index 3bc1f11..c5db94b 100644
--- a/docs/forward-api.md
+++ b/docs/forward-api.md
@@ -194,7 +194,7 @@ T("i18n.count.person", 3)   // "3 people"
 Produces past-tense completion messages.
 
 ```go
-T("i18n.done.delete", "config.yaml")  // "Config.Yaml deleted"
+T("i18n.done.delete", "config.yaml")  // "Config.yaml deleted"
 T("i18n.done.push", "commits")        // "Commits pushed"
 T("i18n.done.delete")                 // "Deleted"
 ```
diff --git a/grammar.go b/grammar.go
index adb0224..4fcf4cf 100644
--- a/grammar.go
+++ b/grammar.go
@@ -621,18 +621,26 @@ func isVowel(r rune) bool {
 	return false
 }
 
-// Title capitalises the first letter of each word.
+// Title capitalises the first letter of each word-like segment.
+//
+// Hyphens and whitespace start a new segment; punctuation inside identifiers
+// such as dots and underscores is preserved so filenames stay readable.
 func Title(s string) string {
 	b := core.NewBuilder()
 	b.Grow(len(s))
-	prev := ' '
+	capNext := true
 	for _, r := range s {
-		if !unicode.IsLetter(prev) && unicode.IsLetter(r) {
+		if unicode.IsLetter(r) && capNext {
 			b.WriteRune(unicode.ToUpper(r))
 		} else {
 			b.WriteRune(r)
 		}
-		prev = r
+		switch r {
+		case ' ', '\t', '\n', '\r', '-':
+			capNext = true
+		default:
+			capNext = false
+		}
 	}
 	return b.String()
 }
diff --git a/grammar_test.go b/grammar_test.go
index a8ecde3..f11063c 100644
--- a/grammar_test.go
+++ b/grammar_test.go
@@ -454,6 +454,7 @@ func TestTitle(t *testing.T) {
 		{"", ""},
 		{"HELLO", "HELLO"},
 		{"hello-world", "Hello-World"},
+		{"config.yaml", "Config.yaml"},
 	}
 
 	for _, tt := range tests {
@@ -663,7 +664,7 @@ func TestActionResult(t *testing.T) {
 		verb, subject string
 		want          string
 	}{
-		{"delete", "config.yaml", "Config.Yaml deleted"},
+		{"delete", "config.yaml", "Config.yaml deleted"},
 		{"build", "project", "Project built"},
 		{"", "file", ""},
 		{"delete", "", ""},
diff --git a/handler_test.go b/handler_test.go
index 3869d2c..fdff311 100644
--- a/handler_test.go
+++ b/handler_test.go
@@ -104,8 +104,8 @@ func TestDoneHandler(t *testing.T) {
 
 	// With subject
 	got := h.Handle("i18n.done.delete", []any{"config.yaml"}, nil)
-	if got != "Config.Yaml deleted" {
-		t.Errorf("DoneHandler.Handle(delete, config.yaml) = %q, want %q", got, "Config.Yaml deleted")
+	if got != "Config.yaml deleted" {
+		t.Errorf("DoneHandler.Handle(delete, config.yaml) = %q, want %q", got, "Config.yaml deleted")
 	}
 
 	// Without subject — just past tense
diff --git a/service_test.go b/service_test.go
index 31a28f6..227126c 100644
--- a/service_test.go
+++ b/service_test.go
@@ -54,8 +54,8 @@ func TestServiceT(t *testing.T) {
 
 	// Done handler
 	got = svc.T("i18n.done.delete", "config.yaml")
-	if got != "Config.Yaml deleted" {
-		t.Errorf("T(i18n.done.delete, config.yaml) = %q, want 'Config.Yaml deleted'", got)
+	if got != "Config.yaml deleted" {
+		t.Errorf("T(i18n.done.delete, config.yaml) = %q, want 'Config.yaml deleted'", got)
 	}
 
 	// Fail handler
diff --git a/types.go b/types.go
index 7e59ab8..dffcbec 100644
--- a/types.go
+++ b/types.go
@@ -8,7 +8,7 @@
 //	T("i18n.label.status")              // "Status:"
 //	T("i18n.progress.build")            // "Building..."
 //	T("i18n.count.file", 5)             // "5 files"
-//	T("i18n.done.delete", "config.yaml") // "Config.Yaml deleted"
+//	T("i18n.done.delete", "config.yaml") // "Config.yaml deleted"
 //	T("i18n.fail.push", "commits")      // "Failed to push commits"
 package i18n