Misc #17997: DevelopersMeeting20210715Japan

• Status: Closed
• Assignee: -

[mame (Yusuke Endoh)]

The next dev meeting

Date: 2021/07/15 13:00-17:00
Place/Sign-up/Agenda/Log: https://github.com/ruby/dev-meeting-log/blob/master/DevelopersMeeting20210715Japan.md

• Dev meeting IS NOT a decision-making place. All decisions should be done at the bug tracker.
• Dev meeting is a place we can ask Matz, nobu, nurse and other developers directly.
• Matz is a very busy person. Take this opportunity to ask him. If you can not attend, other attendees can ask instead of you (if attendees can understand your issue).
• We will write a log about the discussion to a file or to each ticket in English.
• All activities are best-effort (keep in mind that most of us are volunteer developers).
• The date, time and place are scheduled according to when/where we can reserve Matz's time.
• DO NOT discuss then on this ticket, please.

Call for agenda items

If you have a ticket that you want matz and committers to discuss, please post it into this ticket in the following format:

* [Ticket ref] Ticket title (your name)
  * Comment (A summary of the ticket, why you put this ticket here, what point should be discussed, etc.)

Example:

* [Feature #14609] `Kernel#p` without args shows the receiver (ko1)
  * I feel this feature is very useful and some people say :+1: so let discuss this feature.

• It is recommended to add a comment by 2021/07/12. We hold a preparatory meeting to create an agenda a few days before the dev-meeting.
• The format is strict. We'll use this script to automatically create an markdown-style agenda. We may ignore a comment that does not follow the format.
• Your comment is mandatory. We cannot read all discussion of the ticket in a limited time. We appreciate it if you could write a short summary and update from a previous discussion.

[mame (Yusuke Endoh)]

• Related to Misc #14770: [META] DevelopersMeeting added

[mame (Yusuke Endoh)]

• [Feature #17994] Clarify IO.read behavior and add File.read method (mame)
  • Jeremy pointed that Socket.read is callable but does not make sense. Should we deprecate the use of IO.read against a receiver different than IO and File?

[matheusrich (Matheus Richard)]

• [Feature #17938] Keyword alternative for boolean positional arguments (MatheusRich)
  • I think we should address this in the whole std lib (incrementally). Matz seemed positive about it.
  • What should we do if both positional and keyword args are given?
  • Should we deprecate/warn the positional version? (even in a minor release?)

[jeremyevans0 (Jeremy Evans)]

• [Feature #15856] Performance of redundant Kernel.require is slow when many gems are activated (jeremyevans0)
  • Repeated require of native library without extension is very slow.
  • Repeated require of pure ruby library without extension is fast.
  • Making search_required use the same logic for both native and pure ruby libraries makes repeated require of native library without extension fast.
  • In addition to dramatically increasing the performance, this also makes the behavior consistent for native and pure ruby libraries.
  • This breaks backwards compatibility, in that require 'foo.so'; require 'foo' will not load foo.rb if it exists.
  • Is such breakage acceptable for the dramatically increased performance and increased consistency?
• [Feature #17724] Make the pin operator support instance/class/global variables (jeremyevans0)
  • Is it OK to allow the pattern matching pin operator to directly support instance/class/global variables?
• [Bug #17757] Hash#slice does not keep compare_by_identity on the results (jeremyevans0)
  • Some hash methods do not consistently return hashes with compare by identity flag if receiver has compare by identity flag.
  • Some of these are definitely bugs, as they treat the empty receiver differently than non empty receiver.
  • However, do we want change the behavior for slice and/or transform_keys to return compare by identity hash if receiver has compare by identity flag?
• [Bug #17737] Array#permutation does not immediately check the arity when no block is given (jeremyevans0)
  • If we think this is a bug, we'll have to move all argument checking before enumerator creation in all of the methods that return enumerator.
  • I don't think it is a bug.
  • If this isn't a bug, can this be closed?
• [Bug #17719] Irregular evaluation order in hash literals (jeremyevans0)
  • Should we fix the evaluation order for duplicate hash keys using @nobu's patch (my preference)?
  • Or should we change duplicate hash keys from a warning to an error?

[Eregon (Benoit Daloze)]

• [Bug #18011] Method#parameters is incorrect for forwarded arguments (eregon)
  • How about @jeremyevans0's suggestion to add [:keyrest, :**] for ruby2_keywords methods and for (...)? It sounds good to me.

[larskanis (Lars Kanis)]

• [Bug #15357] Proc#parameters returns incomplete type information (larskanis)
  • Either change proc{}.parameters to return the same information as lambda{}.parameters
  • or add keyword parameters(lambda: true) to enable this in a backward compatible way (@jeremyevans0's patch)
  • or keep everything as is?

[Eregon (Benoit Daloze)]

• [Misc #18025] rb_iterate is obsolete since 1.9 but is not marked as deprecated for C compilers (eregon)
  • OK? Could someone review https://github.com/ruby/ruby/pull/4629?

[Dan0042 (Daniel DeLorme)]

• [Feature #17795] Around Process.fork callbacks API (dan0042)
  • After a few meetings without a decision, can we at least reach a compromise with Process._fork_ ?
  • For certain uses cases that would improve the statu quo from "impossible to write fork-safe code" to "unobvious but possible"

[duerst (Martin Dürst)]

• [Feature #17837] Add support for Regexp timeouts (Sam Saffron)
  • I support looking more closely at Nobu's patch. I have done some experiments which show worst-case slowdowns of ~5%.

[Eregon (Benoit Daloze)]

• [Bug #13671] Regexp with lookbehind and case-insensitivity raises RegexpError only on strings with certain characters (eregon)
  • Can we update to latest Onigmo to fix this? Who knows how to do that/who to assign?

[mame (Yusuke Endoh)]

• Description updated (diff)
• Status changed from Open to Closed