Dominique Devienne wrote:
I am sure other Ant committers will feel differently. I do not see a
big urge to implement this.

On the other side, why not ?

Yes, why not. Referencing an unset property is indeed often a bug in
the build, although not always. I have thought myself than an "sh"
property handler, which implements the usual Bourne-Shell type checks
and alternate values on property replacement would take case of such
an issue, but it would force using the property handler's prefix.

Something like ${sh:foo:?} would fail the build if foo is undefined.
The notation doesn't exactly look clean, but the functionality would
be worthwhile I think. --DD
Righto. I'll see what I can come up with then. :)

/Marcus

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