diff --git a/main.go b/main.go
index 6a77d12..6acae15 100644
--- a/main.go
+++ b/main.go
@@ -7,23 +7,26 @@
 // are unique, that responsibility falls on the caller.
 package sanitized_anchor_name // import "github.com/shurcooL/sanitized_anchor_name"
 
-import "unicode"
+import (
+	"strings"
+	"unicode"
+)
 
 // Create returns a sanitized anchor name for the given text.
 func Create(text string) string {
-	var anchorName []rune
-	var futureDash = false
-	for _, r := range text {
-		switch {
-		case unicode.IsLetter(r) || unicode.IsNumber(r):
-			if futureDash && len(anchorName) > 0 {
-				anchorName = append(anchorName, '-')
-			}
-			futureDash = false
-			anchorName = append(anchorName, unicode.ToLower(r))
-		default:
-			futureDash = true
+	var hasRunes bool
+	var prevDash bool
+	fn := func(r rune) rune {
+		if unicode.IsLetter(r) || unicode.IsNumber(r) {
+			hasRunes = true
+			prevDash = false
+			return unicode.ToLower(r)
 		}
+		if hasRunes && !prevDash {
+			prevDash = true
+			return '-'
+		}
+		return -1
 	}
-	return string(anchorName)
+	return strings.TrimRight(strings.Map(fn, text), "-")
 }