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Re: Can we do global bug fixes that change behavior?

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Christian Walde
June 28, 2011 15:36
Re: Can we do global bug fixes that change behavior?
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On Wed, 29 Jun 2011 00:24:40 +0200, Leon Timmermans <> wrote:

> On Tue, Jun 28, 2011 at 11:31 PM, Christian Walde
> <> wrote:
>> xdg suggested on IRC that i ask this as a separate question, so:
>> obra:
>> Assuming p5p reaches an agreement that magical newline-changing on Windows
>> is a bug, would you agree to changing the behavior globally for the
>> interpreter; or only accept it as a lexical fix when 'use v5.16' is in
>> effect no matter what the concensus is?
>> leont indicated that this kind of change could be applied with zero ill
>> effects from 5.14 on, and with a possible performance regression from 5.12
>> on.
> It should be easy from an implementation point of view. My main
> concern is that files written in current versions will show up
> differently in the newer versions (carriage returns at the end of
> lines), and that would cause some breakage.

This problem exists currently already, since files written on Windows by $fh->print("\n") will contain magic \rs, which will break when read on linux with the expectation of only \n.

> Such a transition could be made easier by a generic :text. This layer
> should probably be based on the robustness principle (e.g. it should
> accept both LF and CRLF line-endings for input, but only output LF).

I'm a bit confused this would come in if it wouldn't be an auto-applied layer no matter what OS?

With regards,
Christian Walde

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