Bug 772375

Description of problem:
ant build using jar in ~/.ant/lib fails

Version-Release number of selected component (if applicable):
ant-1.8.2-6.fc16

How reproducible:
Always

Steps to Reproduce:
1. Place required .jar file in ~/.ant/lib, in this case maven-ant-tasks.jar (v2.1.3) downloaded from http://maven.apache.org/ant-tasks
2. Create build.xml file that uses classes in .jar file (see below)
3. Type ant, and encounter error
  
Actual results:

Buildfile: /opt/devel/test/build.xml

BUILD FAILED
/opt/devel/test/build.xml:5: Problem: failed to create task or type antlib:org.apache.maven.artifact.ant:remoteRepository
Cause: The name is undefined.
Action: Check the spelling.
Action: Check that any custom tasks/types have been declared.
Action: Check that any <presetdef>/<macrodef> declarations have taken place.
No types or tasks have been defined in this namespace yet

This appears to be an antlib declaration. 
Action: Check that the implementing library exists in one of:
        -/usr/share/ant/lib
        -/opt/devel/.ant/lib
        -a directory added on the command line with the -lib argument

Expected results:
Buildfile: /opt/devel/test/build.xml

help:
     [echo] Test

BUILD SUCCESSFUL

Additional info:

Directory ~/test contains the file build.xml, contents:
--- start build.xml
<?xml version="1.0" ?>

<project name="Test" default="help" basedir="." xmlns:artifact="antlib:org.apache.maven.artifact.ant">

  <artifact:remoteRepository id="my.repository" url="http://example.com">
    <snapshots updatePolicy="always" />
  </artifact:remoteRepository>
  <target name="help">
    <echo message="Test"/>
  </target>
</project>
--- end build.xml

This project references artifact:remoteRepository, which is implemented in ~/.ant/lib/maven-ant-tasks.jar (present in user's directory and downloaded directly from http://maven.apache.org/ant-tasks/download.html).

Installing ant-1.8.2-bin from http://ant.apache.org/bindownload.cgi, and setting ANT_HOME to the install directory results in the expected result.  Using the RPM ant-1.8.2 results in the actual results (with ANT_HOME set or unset).

It's possible to work around the problem with a <typedef> in build.xml but that requires updating each and every build.xml file in the source repository, and does not follow the guidelines for maven-ant-tasks on http://maven.apache.org/ant-tasks/installation.html

Jar libraries in /usr/share/ant/lib and ~/.ant/lib should be considered when ant runs (and does on the release binary).  The RPM build does not seem to work correctly.

There doesn't appear to be any documentation supplied with ant-1.8.2 that provides guidelines for any modified behavior of the ant release relative to the apache.org release.