Hi

I looked at the proposal.

I agree it would be useful, but I have two concerns.

* The proposal requires the presence of a CDR-NN package. Such a proposal should be made separately. FTTB if CDR-14 is used, only the CDR-NN feature should be provided. I would be in favor of a new CDR stating that a CDR-XX nickname could be added to a package implementing a given feature. * The proposal as is may not be portably implemented by a third party without resorting to implementation support which may or may not be there. The problematic operators are WITH-PARENT-ENVIRONMENT and ENVIRONMENT-ENTRY-NAMES. Do you see any way to provide it in a simple (read: non SBCL) way?

Finally, COPY-ENVIRONMENT may and LEXICAL-ENVIRONMENT also be problematic.

cheers

Marco Antoniotti

On Apr 25, 2019, at 16:47 , Michael Raskin <38a938c2@rambler.rumailto:38a938c2@rambler.ru> wrote:

Hello. I want to try to do something about portability of universally present features, given that stndard revisions are extremely unlikely, and CDR process seems to be the best way to obtain a stable ID for some version of description.

As automatic code processing is a large part of Common Lisp identity as it is presented, and there is a small and easy to define chunk of functionality that is missing, I am preparing a CDR on portable code walking support.

Before I formally submit a CDR proposal, I want to try to get some feedback. The current version of the writeup I have is at: https://gitlab.common-lisp.net/mraskin/cdr-walkability/blob/master/walkabili...

Please comment on that proposal, here or via issues or maybe even merge requests. I will announce the link to the discussion in the ELS mailing list (as ELS conference seems to be the closest approximation to community discussion we have).

I considered including Trucler API as an option, but currently I doubt I am able to do it well: mixing a coherent API with multiple optional additions that are useful even as single functions is a harder task. I want to start somewhere.

Separately, if someone has some proposals on how to make CDR process used more — or matter more, please share. Probably on cdr-devel https://mailman.common-lisp.net/listinfo/cdr-devel

Thank you, goodbye Michael Raskin

-- Marco Antoniotti, Associate Professor tel. +39 - 02 64 48 79 01 DISCo, Università Milano Bicocca U14 2043 http://bimib.disco.unimib.it Viale Sarca 336 I-20126 Milan (MI) ITALY

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