jruby -i Edit files in place behaves inconsistent with MRI

[crccw]

Manifest.xml:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="#testPackage#"
      android:versionCode="3"
      android:versionName="0.3.0">

and the command is:

ruby -pi.back -e "gsub(/#testPackage#/,'foo')" Manifest.xml

With MRI, #testPackage# gets replaced successfully.

With JRuby 9.0.4.0, nothing changes.

I'm using JRuby 9.0.4.0 with calabash-android. When executing calabash-android build <apk>, this problem seems to jeopardize it.

Thoughts?

[enebo]

This was fixed some long time in the past but marking against something so someone can notice it has been fixed.