better suffix check

pkg/cat/markdown.go

@@ -0,0 +1,39 @@
+package cat
+
+import (
+	"fmt"
+	"strings"
+)
+
+func (c Cater) ToMarkdown() string {
+	var sb strings.Builder
+
+	write := func(e entry, lvl int) {
+		for range lvl {
+			sb.WriteString("#")
+		}
+		sb.WriteString(fmt.Sprintf(" %s (`%s`)\n", e.name, e.fqname))
+
+		if len(e.content) > 0 {
+			prts := strings.Split(e.name, ".")
+			sb.WriteString(
+				fmt.Sprintf(
+					"```%s\n%s\n```\n\n",
+
+					prts[len(prts)-1],
+					strings.ReplaceAll(
+						e.content,
+						"```",
+						"\\`\\`\\`",
+					),
+				),
+			)
+		}
+	}
+
+	for _, e := range c {
+		e.traverse(1, write)
+	}
+
+	return sb.String()
+}