Date: 2016/10/11 (Tue)
Time: 14:00- 18:00 (JST)
Place: SFDC Japan, Tokyo
log edit:

Attendees/参加者: duerst (Martin Dürst), shyouhei, hsbt, mrkn
Language: mostly Japanese (sorry for non native Japanese speakers)

Please add your favorite ticket numbers you want to ask to discuss.

  • NOTE
    • 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 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 is scheduled according to when/where we can reserve Matz's time.


  • NOTE: Write at least "ticket number/title/link" and your name (see example below). Explain details on the ticket. If you cannot attend the meeting, we appreciate a short summary because we can understand it more easily (long discussion is difficult to read, especially in a non-native language). Your motivation is also welcome.

About 2.4 timeframe

(From RubyKaigi admin) for Keynote speakers

  • Please send us keynote speaker's Shinkansen receipt (shyouhei)

Carry-over from previous meeting(s)

  • [Misc #12283] Obsolete ChangeLog and commit message in Git-style (shyouhei) situation and progress?
  • [Feature #12695] File.expand_path should resolve ~/ using /etc/passwd when HOME is not set (shyouhei) conclusion?
  • [Feature #12733] Bundle bundler to ruby core (shyouhei)
  • [Feature #6647] Exceptions raised in threads should be logged (shyouhei) Look at [[ruby-core:77259\]](
  • [Feature #12744] Add str.reverse_each_char and str.reverse_chars (shyouhei) conclusion?
  • [Bug #11195] Add "no_proxy" parameter to (shyouhei) Roman Bigler volunteers.
  • [Feature #12700] regexg heredoc support (shyouhei) the OP might perhaps have real use case.
  • [Bug #12594] The class does not inherit from a module the modules that were included after the inclusion (shyouhei)

From attendees

  • [Bug #12649] DateTime method calls hang (shyouhei) seems like a real bug?
  • [Bug #12652] For Dir.home encode passed user (shyouhei) seems like a real bug?
  • [Bug #12509] Using qsort_s in mingw-w64 causes failures (shyouhei) who to handle this?
  • [Bug #8996] pthread_mutex_lock EINVAL (shyouhei) seems like a real bug?
  • [Bug #12776] Flaky test case: TestThread#test_thread_name (shyouhei) seems like a real bug, or....?
  • [Feature #12656] Expand short paths with File.expand_path (shyouhei)
  • [Bug #7877] E::Lazy#with_index should be lazy (shyouhei)
  • [Feature #12664] Multiline pretty-printing of multiline strings (shyouhei)
  • [Feature #4897] Define Math::TAU and BigMath.TAU. The "true" circle constant, Tau=2*Pi. See (shyouhei)
  • [Bug #12674] io/wait: not handling the case when the socket is closed before doing wait_readable/writable with timeout (shyouhei) might be a design issue?
  • [Bug #12678] No way to set a timeout for TLS handshake when using Net::SMTP (shyouhei) should who handle this?
  • [Bug #6783] Infinite loop in inspect, not overriding inspect, to_s, and no known circular references. Stepping into inspect in debugger locks it up with 100% CPU. (shyouhei)
  • [Bug #10222] require_relative and require should be compatible with each other (shyouhei)
  • [Bug #12705] yielding args to a lambda uses block/proc rather than lambda/method semantics (shyouhei)
  • [Bug #4537] Incorrectly creating private method via attr_accessor (shyouhei) cf. [Bug #9005]
  • [Feature #12721] public_module_function (shyouhei)
  • [Feature #12732] An option to pass to Integer, Float, to return nil instead of raise an exception (shyouhei)
  • [Feature #12745] String#(g)sub(!) should pass a MatchData to the block, not a String (shyouhei)
  • [Feature #12747] Add TracePoint#callee_id (shyouhei)
  • [Feature #12755] optimize instruction sequence (shyouhei)
  • [Feature #12753] Useful operator to check bit-flag is true or false (shyouhei)
  • [Bug #12754] Want to use prepared buffer with Array#pack (shyouhei)
  • [Feature #12752] Unpacking a value from a binary requires additional '.first' (shyouhei)
  • [Feature #12746] class Array: alias .prepend to .unshift ? (shyouhei)
  • [Feature #11815] Proposal for method Array#difference (shyouhei)
  • [Feature #12770] Hash#left_merge (shyouhei)
  • [Feature #12760] Optional block argument for itself (shyouhei)
  • [Feature #12775] Random subset of array (shyouhei)
  • [Feature #2172] Enumerable#chunk with no block (shyouhei)
  • [Bug #10290] segfault when calling a lambda recursively after rescuing SystemStackError (shyouhei)
  • [Bug #12688] Thread unsafety in autoload (shyouhei)
  • [Bug #12780] BigDecimal#round returns different types depending on argument (shyouhei)
  • [Feature #12786] String#casecmp? (shyouhei)
  • [Feature #12612] Switch Range#=== to use cover? instead of include? (shyouhei)
  • [Bug #9244] unexpected behaviour of 'require' when $LOAD_PATH gets changed (shyouhei)
  • [Feature #12790] Better inspect for stdlib classes (shyouhei)
  • [Feature #12719] Struct#merge for partial updates (shyouhei)
  • [Feature #12715] Allow ruby hackers to omit having to specify class or module mandatory, if they know exactly what they want to do (shyouhei)
  • [Feature #12698] Method to delete a substring by regex match (shyouhei)
  • [Feature #12697] Why shouldn't Module meta programming methods be public? (shyouhei)
  • [Feature #8960] Add Exception#backtrace_locations (shyouhei) another problem is issued or...?
  • [Feature #12664] Multiline pretty-printing of multiline strings (shyouhei)
  • [Feature #12142] Hash tables with open addressing (duerst) (we should make progress on this one because it would be a nice feature for Ruby 2.4)
  • [Feature #11286] [PATCH] Add case equality arity to Enumerable's sequence predicates. (shyouhei)
  • [Bug #12828] Check whether macro RUBY is okay for protecting ruby-specific onigumo extensions (duerst)

From non-attendees

Write your name and your interest (what do you want to ask and to whom?) please.

  • example: [Feature #10917] Add GC.stat[:total_time] when GC profiling enabled (ko1)
  • [Feature #12760] Optional block argument for itself (Victor Shepelev)