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http://jira.codehaus.org/browse/MANTRUN-68?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_122179
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Benjamin Bentmann commented on MANTRUN-68:
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bq. It appears that ClassLoaders from ClassWorlds return file URL that contains 
whitespace instead of escaping it to %20, and Ant 1.7 doesn't like this.
Ant is not to blame and should IMHO not be the target of any patches. According 
to [RFC 2396, 2.4.3. Excluded US-ASCII 
Characters|http://www.ietf.org/rfc/rfc2396.txt] URIs/URLs *must not* contain 
spaces. Although the Java class {{java.net.URL}} does not enforce/check this 
(see the last paragraphs in its [class 
javadoc|http://java.sun.com/javase/6/docs/api/java/net/URL.html] about the URL 
encoding and the relationship to {{java.net.URI}} and {{URLEncoder}}), 
well-behaved applications should never construct such invalid URLs.

> Use ant-1.7.0
> -------------
>
>                 Key: MANTRUN-68
>                 URL: http://jira.codehaus.org/browse/MANTRUN-68
>             Project: Maven 2.x Antrun Plugin
>          Issue Type: New Feature
>    Affects Versions: 1.2
>         Environment: xp, linux
>            Reporter: Dan Tran
>         Attachments: MANTRUN-68-maven-antrun-plugin.patch
>
>
> with out this upgrade, i will need to <exec> ant 1.7.0 to use its new 
> features like abily to do delete,move, etc using filelist

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