Author terry.reedy
Recipients Arfrever, ezio.melotti, jkloth, mrabarnett, pitrou, r.david.murray, tchrist, terry.reedy
Date 2011-08-14.20:55:17
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Tom, I appreciate your taking the time to help us improve our Unicode story. I agree that the compromises made a decade ago need to be revisited and revised.

I think it will help if you better understand our development process. Our current *intent* is that 'Python x.y' be a fixed language and that 'CPython x.y.0', '.1', '.2', etc be increasingly (and strictly -- no regressions) better implementations of Python x.y. (Of course, the distribution and installation names and up-to-now dropping of '.0' may confuse the distinction, but it is real.) As a consequence, correct Python x.y code that runs correctly on the CPython x.y.z implementation should run correctly on x.y.(z+1).

For the purpose of this tracker, a behavior issue ('bug') is a discrepancy between the documented intent of a supported Python x.y and the behavior of the most recent CPython x.y.z implementation thereof. A feature request is a design issue, a request for a change in the language definition (and in the corresponding .0 implementation). Most people (including you, obviously) that file feature requests regard them as addressing design bugs. But still, language definition bugs are different from implementation bugs.

Of course, this all assumes that the documents are correct and unambiguous. But accomplishing that can be as difficult as correct code. Obvious mistakes are quickly corrected. Ambiguities in relation to uncontroversial behavior are resolved by more exactly specifying the actual behavior. But ambiguities about behavior that some consider wrong, are messy. We can consult the original author if available, consult relevant tests if present, take votes, but some fairly arbitrary decision may be needed. A typical response may be to clarify behavior in the docs for the current x.y release and consider behavior changes for the next x.(y+1) release.

So the answer to your question, "Do we fix bugs?", is that we fix doc and implementation behavior bugs in the next micro x.y.z behavior bug-fix release and language design bugs in the next minor x.y language release. But note that language changes merely have to be improvements for Python in the future without necessarily worrying about whether a design decision made years ago was  or is a 'bug'.

The purpose of me discussing or questioning the 'type' of some of your issues is to *facilitate* change by getting the issue on the right track, in relation to our development process, as soon as possible.
Date User Action Args
2011-08-14 20:55:18terry.reedysetrecipients: + terry.reedy, pitrou, jkloth, ezio.melotti, mrabarnett, Arfrever, r.david.murray, tchrist
2011-08-14 20:55:18terry.reedysetmessageid: <>
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2011-08-14 20:55:17terry.reedycreate