Mustache-like templating in Clojure

mustache.clj

(ns mustache
  (:require [clojure.string :as str]))

(defn mustache
  [s args]
  (reduce
   (fn [result [k v]]
     (str/replace result
                  (re-pattern (format "([^\\{])\\{%s\\}([^\\}])" (name k)))
                  (format "$1%s$2" v)))
   s args))

(assert
 (=
  (mustache "a={a}, b={{a}}, c={c}" {:a 1 :b 2})
  "a=1, b={{a}}, c={c}"))