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From Vimil Saju <>
Subject Re: Negative Lookahead and Regexp
Date Thu, 10 Nov 2011 13:44:57 GMT
The propertyset type has a negate attribute. maybe that will help you.

From: Steve Amerige <>
To: Ant Users List <>
Sent: Thursday, November 10, 2011 4:50 AM
Subject: Re: Negative Lookahead and Regexp

Hi all,

So, I'm guessing that Ant 1.7+ (with optional Ant-Contrib) doesn't support negative lookahead
regex searches.

So, I'm refocusing on the main objective here: I want a propertyset that excludes properties
matching certain patterns.  Any idea as 
to how to accomplish this?

Steve Amerige
SAS Institute, Deployment Software Development

On 11/9/2011 3:40 PM, Steve Amerige wrote:
> Hi all,
> Is negative lookahead supported at all in Ant 1.7 and higher (Ant-Contrib, too)?  Maybe
my syntax is off:
> <propertyregex property="result" input="a.b.c.bad" select="\1" regexp="(.*(?!bad))"
defaultValue="" override="true"/>
> <propertyregex property="result" input="a.b.c.ok" select="\1" regexp="(.*(?!bad))"
defaultValue="" override="true"/>
> The first result should be the empty string and the second result should be "a.b.c.ok". 
I'm also looking to use this idea in 
> <propertyset> to exclude certain properties.
> See the regular expression page on this:
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