[Bug 49891] Nested subant does not allow override of properties.

[bu...@apache.org]

https://issues.apache.org/bugzilla/show_bug.cgi?id=49891

--- Comment #7 from Sjoerd van Leent <sv...@gmail.com> ---
Recently, at our office (Realworld Systems) we experienced issues with the same
underlying problem. We usually use a build.properties file to override or
introduce properties. However, on our CI (Jenkins) we encode these properties
into the Jenkins environment.

This time, we had a certain property, which was altered with subant. On the
command-line, on the developer's box, this was alright. However, the behavior
of Ant inside the CI was quite different.

After experimenting a bit, we found out that these properies are set through
the command-line, creating the same problem as already described.

Aside from the change to addAlmostAll, we would like to be able to have a
tertiary property, indicating whether command-line properties should take
precedence, or at least a way to indicate which command-line properties should
be excluded from precedence.

To our understanding, the behavior, although documented, is illogical and
contradicts with the normal expectation of the properties to be reset.

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