On Dec 1, 2007, at 9:17 PM, Chris McCormick wrote:

> On Fri, Nov 30, 2007 at 02:06:52PM -0500, Hans-Christoph Steiner  
> wrote:
>>> Which has bitten me on the ass at least once when making music with
>>> someone who uses pd-extended. Hans, I wonder if you could make it
>>> clear
>>> to people who download pd-extended that it is incompatible with  
>>> Pd, an
>>> older version, and that it is bundled with many externals which  
>>> aren't
>>> in Pd by default?
>>>
>>> Note that I really appreciate all the work you are doing to make
>>> people's
>>> lives easier, and don't want to put a dent in your efforts. I just
>>> think
>>> if we're not careful with breaking compatability people are going
>>> to get
>>> very confused very quickly.
>>
>> Correct me if I am wrong, but using Pd-extended vs Pd-vanilla of the
>> same version is no more incompatible than using Pd-vanilla 0.40 vs.
>> 0.39.  If you use [declare] in a patch in pd-vanilla 0.40, then it
>> won't work in pd-vanilla 0.39.  If you use [atan2] in Pd-vanilla 0.37
>> then it won't be compatible with pd-vanilla 0.38, and vice-versa.
>
> If you change the behaviour of something as fundemental as [select]
> in pd-extended and it doesn't get changed in Pd, then the patches and
> libraries I write under Pd won't work properly in pd-extended.

That is well understood.  I have no plans to change [select] in an  
incompatible way.  Frank clearly illustrated why the change discussed  
would break things.

.hc


>
> You are correct though, if I recall correctly the specific problem I
> had with someone using pd-extended was when I tried to show them
> something that only works in 0.40. I had to get them to download the
> latest in order to get my abstraction to work. Which is fine - I guess
> you can't be expected to track the latest Pd exactly.
>
>> Pd-extended 0.39 is basically like half way between pd-vanilla 0.39
>> and 0.40 since it includes patches that get included in 0.40, but
>> doesn't include miller's 0.40 changes.
>
> Got it.
>
>> This is the reason why I made the [hcs/version] object, you can issue
>> a warning if someone is using your patch with a version not tested or
>> known to be incompatible.  It's not in Pd-vanilla, I never submitted
>> it to the patch tracker since I wasn't sure of the best interface for
>> it, like maybe it should be a message like [;pd version(, then you
>> listen on [receive pd]-[route version] for the response.
>
> Might be a good idea if it acheives widespread use.
>
> Best,
>
> Chris.
>
> -------------------
> http://mccormick.cx


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