I was kind of confused but I think the addition of the example to the nightly build docs would have solved it. Unfortunately for me I was looking at the docs that came with my build :-). The fourth example clarifies this use very nicely. Thanks!
Kevin -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ian MacLean Sent: Wednesday, September 01, 2004 9:37 PM To: Kevin Dickover Cc: 'Gert Driesen'; [EMAIL PROTECTED] Subject: Re: [Nant-users] Params vs properties redux was: Nant .85 not working with Draco.Net-Again Kevin Dickover wrote: >Cool thanks. However that might want to be clarified in the docs. I >assumed from "Specifies whether the value of a property should be >overwritten if the property already exists (unless the property is >read-only). The default is true. " that overwrite="true" meant that it could >be over written. Obviously that was an incorrect assumption. > > > you're not the only one to think this. The problem is that conceptually the <property> tag defines the default value but in terms of nant initialization the commandline value is set first before the <property> tag is processed so Nant sees the property already exists. This is, as you pointed out quite confusing which is why I proposed the <param> solution. Unfortunately that won't be going in before the 0.85 release as it will need a bit of work. In some ways - the previous behaviour - where nant just silently ignored the <property> tag if the value was already set was better with regard to commandline args - the problem was that you'd get no feedback when trying to update a readonly property. Ian >Kevin > >-----Original Message----- >From: Gert Driesen [mailto:[EMAIL PROTECTED] >Sent: Wednesday, September 01, 2004 2:03 PM >To: Kevin Dickover; [EMAIL PROTECTED] >Subject: Re: [Nant-users] Params vs properties redux was: Nant .85 not >working with Draco.Net-Again > >Kevin, > >Just set overwrite to "false" : > ><project name="Proptest" default="testProperty"> > <property name="ENV" value="DEV" overwrite="false" readonly="false" /> > <target name="testProperty"> > <echo message="${ENV}" /> > </target> ></project> > >Hope this helps, > >Gert > >----- Original Message ----- >From: "Kevin Dickover" <[EMAIL PROTECTED]> >To: <[EMAIL PROTECTED]> >Sent: Wednesday, September 01, 2004 7:54 PM >Subject: Re: [Nant-users] Params vs properties redux was: Nant .85 not >working with Draco.Net-Again > > > > >>Assume a sample build file >> >><project name="Proptest" default="testProperty"> >><property name="ENV" value="DEV" overwrite="true" readonly="false" >>/> >><target name="testProperty"> >><echo message="${ENV}" /> >></target> >></project> >> >>When this is run the output is >> >>C:\Temp\nantest>C:\nant\bin\NAnt.exe >>NAnt 0.85 (Build 0.85.1684.0; net-1.0.win32; nightly; 8/11/2004) >>Copyright (C) 2001-2004 Gerry Shaw >>http://nant.sourceforge.net >> >>Buildfile: file:///C:/Temp/nantest/test.build >>Target(s) specified: testProperty >> >> >>testProperty: >> >> [echo] DEV >> >>BUILD SUCCEEDED >> >>Total time: 0.1 seconds. >> >>However when I try to set ENV on the command line I lose - output follows >> >>C:\Temp\nantest>C:\nant\bin\NAnt.exe -D:ENV=JOE >>NAnt 0.85 (Build 0.85.1684.0; net-1.0.win32; nightly; 8/11/2004) >>Copyright (C) 2001-2004 Gerry Shaw >>http://nant.sourceforge.net >> >>Buildfile: file:///C:/Temp/nantest/test.build >>Target(s) specified: testProperty >> >> >>BUILD FAILED >> >>C:\Temp\nantest\test.build(2,3): >>Read-only property "ENV" cannot be overwritten. >> >>Total time: 0 seconds. >> >> >>Do I really need to go through the absurd little dance of setting up two >>properties, one to accept command line input and one to set a default >>value >>if the command line property has not been set? Or is my build bad? As >>you >>can see I am using a fairly recent nightly build... >> >>Kevin Dickover >> >> >> >> >___________________________________________________________________________ _ >____________________ > > >>This electronic mail (including any attachments) may contain information >>that is privileged, confidential, and/or otherwise protected from >>disclosure to anyone other than its intended recipient(s). Any >>dissemination or use of this electronic email or its contents (including >>any attachments) by persons other than the intended recipient(s) is >>strictly prohibited. If you have received this message in error, please >>notify us immediately by reply email so that we may correct our internal >>records. Please then delete the original message (including any >>attachments) in its entirety. Thank you. >> >> >> >> > >___________________________________________________________________________ _____________________ > >This electronic mail (including any attachments) may contain information that is privileged, confidential, and/or otherwise protected from disclosure to anyone other than its intended recipient(s). Any dissemination or use of this electronic email or its contents (including any attachments) by persons other than the intended recipient(s) is strictly prohibited. If you have received this message in error, please notify us immediately by reply email so that we may correct our internal records. Please then delete the original message (including any attachments) in its entirety. Thank you. > > > -- Ian MacLean, Developer, ActiveState, a division of Sophos http://www.ActiveState.com ------------------------------------------------------- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! 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