[Help] After you've run a postscript, how do you get it to delete itself?

> Hi
>
> In 7038 (and a bunch of previous recent images) the
> postscript of Unnamed1 contains
>
> "Postscript:
> ..."
>
> |repository|
> repository := MCHttpRepository
>                 location:
> 'http://source.squeakfoundation.org/39a'
>                 user: ''
>                 password: ''.
> (repository loadVersionFromFileNamed:
> 'ScriptLoader-sd.173.mcz') load.
>
> ScriptLoader new updateFrom7025
>
> -----
>
> This has caught many unaware.
> The changeset gets renamed and saved w/o being checked
> for an active postscript. Then later someone complains
> e.g.
>
> http://bugs.impara.de/view.php?id=3804
>
> ----------------------------------------------------------------------
>
>  andreas - 07-09-06 04:06
> ----------------------------------------------------------------------
>
> .... Also, *PLEASE* make sure you test your change
> sets
> before submitting them here - one of them had an eerie
> postscript which
> tried to update the entire image!!!
>
>
>
> I figure is should be easy to add something to the
> postscript so that is says
>
> Blah. Blah. Blah.
>
> Load the world.
>
> "And be nice"
>
> Some-object-representing-me removePostscript.
>
> What I can't figure out is the incantation that
> returns the Some-object-representing-me.
>
> Yours in service, -- Jerome Peace
>
>
> P.S.
>
> If that can't be done then the changeset should at
> least be named 'RemovePostscriptFirst" instead of
> Unnamed1.
>
>
>
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>

> I figure is should be easy to add something to the
> postscript so that is says
>
> Blah. Blah. Blah.
>
> Load the world.
>
> "And be nice"
>
> Some-object-representing-me removePostscript.

>
> Am 09.07.2006 um 06:28 schrieb Peace Jerome:
>
>> I figure is should be easy to add something to the
>> postscript so that is says
>>
>> Blah. Blah. Blah.
>>
>> Load the world.
>>
>> "And be nice"
>>
>> Some-object-representing-me removePostscript.
>
> Much better:
>
> check-whether-i-need-to-run-this-postscript ifTrue: [
>     Blah. Blah. Blah.
>
>     Load the world.
> ]
>
> Deleting something from the changeset makes it work magically, you
> cannot tell by looking at the CS what it did. Bad practice, IMNSHO.
>
> - Bert -
>
>
>