jline issue on OS X and proposed simple patch

jline.patch

We found an issue when running it on OS X, we get this exception:

java.util.zip.ZipException: error in opening zip file
    at java.util.zip.ZipFile.open(Native Method)
    at java.util.zip.ZipFile.<init>(ZipFile.java:114)
    at java.util.jar.JarFile.<init>(JarFile.java:135)
    at java.util.jar.JarFile.<init>(JarFile.java:99)
    at jline.ClassNameCompletor.getClassNames(ClassNameCompletor.java:89)
    at jline.ClassNameCompletor.<init>(ClassNameCompletor.java:33)

adding some debug here and there, we found that the ClassNameCompletor tried to find some non jar files, i.e:
/System/Library/Java/Extensions/libAppleScriptEngine.jnilib

From 6dab177d2eb23a99933fdffae4c6fb7ebd33d2c9 Mon Sep 17 00:00:00 2001
From: Alejandro Revilla <apr@jpos.org>
Date: Thu, 16 Dec 2010 14:02:09 -0200
Subject: [PATCH] Ignore non jars (i.e. .jnilib, etc)

---
 src/main/java/jline/ClassNameCompletor.java |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/src/main/java/jline/ClassNameCompletor.java b/src/main/java/jline/ClassNameCompletor.java
index 7c6c6e0..3ef5802 100644
--- a/src/main/java/jline/ClassNameCompletor.java
+++ b/src/main/java/jline/ClassNameCompletor.java
@@ -85,6 +85,8 @@ public class ClassNameCompletor extends SimpleCompletor {
              {
                 continue;
             }
+            if (!file.toString().endsWith (".jar"))
+                continue;
 
             JarFile jf = new JarFile(file);
 
-- 
1.7.3.3