Merge pull request #864 from ghoseb/master

Minor doc & error handling enhancements.

src/leiningen/repl.clj

@@ -133,7 +133,10 @@
   [opts]
   (when-let [port (first
                    (for [[i o] (map-indexed vector opts) :when (= o ":port")]
-                     (nth opts (inc i))))]
+                     (try
+                       (nth opts (inc i))
+                       (catch Exception _
+                         nil))))]
     (Integer. port)))
 
 (defn ^:no-project-needed repl
@@ -148,8 +151,9 @@ inside of a project, it will be run in the context of that classpath.
 If the command is run outside of a project, it'll be standalone and
 the classpath will be that of Leiningen.
 
-USAGE: lein repl :headless
+USAGE: lein repl :headless [:port port]
 This will launch an nREPL server and wait, rather than connecting reply to it.
+If :port is specified, the port given is used instead of a random one.
 
 USAGE: lein repl :connect [host:]port
 Connects to the nREPL server running at the given host (defaults to localhost)