Backport lib/reline, and lib/irb for 3.0.1 4th (#4349)

2021-04-03T09:26:46+00:00

* [ruby/irb] Update help message for next context-mode of 4

While here, fixing tab/space issues in help message, and sync
rdoc for IRB class to match the help message.

https://github.com/ruby/irb/commit/ef8e3901cc

* [ruby/irb] Do not continue line if last expression is an endless range

Fixes [Bug #14824]

https://github.com/ruby/irb/commit/63414f8465

* [ruby/irb] Add a test for not continuing when endless range at eol

https://github.com/ruby/irb/commit/1020ac9c65

* [ruby/irb] Make save-history extension safe for concurrent use

This makes the save-history extension check for modifications to
the history file before saving it.  If the history file was modified
after the history was loaded and before it was saved, append only
the new history lines to the history file.

This can result in more lines in the history file than SAVE_HISTORY
allows.  However, that will be fixed the next time irb is run and
the history is saved.

Fixes [Bug #13654]

https://github.com/ruby/irb/commit/041ef53845

* Fix errors when XDG_CONFIG_HOME points to non-writable directory

`$HOME/.config` is not writable on CI
because I think tests should not corrupt user's data.

And GitHub Actions CI sets `XDG_CONFIG_HOME`
since `Version: 20210309.1`.

https://github.com/ruby/actions/runs/2130811016?check_suite_focus=true#step:16:301
```
Errno::EACCES: Permission denied @ dir_s_mkdir - /home/runner/.config/irb
```

* Try to fix errors in TestIRB::TestHistory too

https://github.com/ruby/actions/runs/2137935523?check_suite_focus=true#step:9:562
```
  1) Error:
TestIRB::TestHistory#test_history_concurrent_use:
Errno::EACCES: Permission denied @ dir_s_mkdir - /home/runner/.config/irb
    /home/runner/work/actions/actions/ruby/lib/fileutils.rb:253:in `mkdir'
    /home/runner/work/actions/actions/ruby/lib/fileutils.rb:253:in `fu_mkdir'
    /home/runner/work/actions/actions/ruby/lib/fileutils.rb:231:in `block (2 levels) in mkdir_p'
    /home/runner/work/actions/actions/ruby/lib/fileutils.rb:229:in `reverse_each'
    /home/runner/work/actions/actions/ruby/lib/fileutils.rb:229:in `block in mkdir_p'
    /home/runner/work/actions/actions/ruby/lib/fileutils.rb:211:in `each'
    /home/runner/work/actions/actions/ruby/lib/fileutils.rb:211:in `mkdir_p'
    /home/runner/work/actions/actions/ruby/lib/irb/init.rb:355:in `rc_file_generators'
    /home/runner/work/actions/actions/ruby/lib/irb/init.rb:330:in `rc_file'
    /home/runner/work/actions/actions/ruby/test/irb/test_history.rb:170:in `block in assert_history'
    /home/runner/work/actions/actions/ruby/lib/tmpdir.rb:96:in `mktmpdir'
    /home/runner/work/actions/actions/ruby/test/irb/test_history.rb:168:in `assert_history'
    /home/runner/work/actions/actions/ruby/test/irb/test_history.rb:133:in `test_history_concurrent_use'
```

* [ruby/irb] Define "measure" command without forced override

https://github.com/ruby/irb/commit/9587ba13b5

* [ruby/irb] Add all lib files automatically

https://github.com/ruby/irb/commit/ecc82336b7

* [ruby/irb] Don't call Ruby 2.4+'s String#pretty_print

https://github.com/ruby/irb/commit/89bcf107be

* [ruby/irb] Implement ls command

https://github.com/ruby/irb/commit/19b6c20604

* [ruby/irb] Add whereami command

https://github.com/ruby/irb/commit/bc822e4aac

* [ruby/irb] Fix column overflow on ls output

https://github.com/ruby/irb/commit/6115754623

* [ruby/irb] Fix step's argument

cols.size was calling Integer#size, which returns 8.

Fixing a bug of https://github.com/ruby/irb/pull/209

https://github.com/ruby/irb/commit/c93ae4be71

* [ruby/irb] Deal with different screen sizes

e.g. http://rubyci.s3.amazonaws.com/centos8/ruby-master/log/20210321T063003Z.fail.html.gz

https://github.com/ruby/irb/commit/ddb3472ba2

* [ruby/irb] Have some right padding

instead of filling out an entire line

https://github.com/ruby/irb/commit/6ac8f45f5f

* Suppress verbose messages

Get rid of warnings in the parallel test.

```
unknown command: "Switch to inspect mode."
```

* [ruby/irb] Change ripper_lex_without_warning to a class method

https://github.com/ruby/irb/commit/d9f8abc17e

* [ruby/irb] Complete require and require_relative

https://github.com/ruby/irb/commit/1c61178b4c

* [ruby/reline] Add Reline.ungetc to control buffer

https://github.com/ruby/reline/commit/43ac03c624

* [ruby/reline] Reline.delete_text removes the current line in multiline

https://github.com/ruby/reline/commit/da90c094a1

* [ruby/reline] Support preposing and postposing for Reline.completion_proc

https://github.com/ruby/reline/commit/1f469de90c

* [ruby/reline] Suppress crashing when completer_{quote,word_break}_characters is empty

https://github.com/ruby/reline/commit/c6f1164942

* [ruby/irb] fix completion test when out-of-place build

* [ruby/irb] Cache completion files to require

https://github.com/ruby/irb/commit/612ebcb311

* [ruby/irb] Always add input method when calling Irb.new in tests

When passes input method as nil to Context.new through Irb.new,
ReidlineInputMethod.new is executed and the global internal state of Reline is
rewritten, therefore other tests are failed in the Ruby repository. This
commit changes to use TestInputMethod.

https://github.com/ruby/irb/commit/010dce9210

* [ruby/irb] Prevent the completion from crashing if rdoc is missing

There are cases where ruby is installed without rdoc and e.g.
lib/irb/cmd/help.rb also handles the LoadError

Here is how to replicate the issue:

```
$ docker run -it alpine:3.13.3 sh

/ # apk add ruby ruby-irb ruby-io-console

/ # irb

irb(main):001:0> Class[TAB][TAB]
```

And you end up with something like:

```
irb(main):001:0> ClassTraceback (most recent call last):
        34: from /usr/bin/irb:23:in `'
        33: from /usr/bin/irb:23:in `load'
        32: from /usr/lib/ruby/gems/2.7.0/gems/irb-1.2.6/exe/irb:11:in `'
        31: from /usr/lib/ruby/2.7.0/irb.rb:400:in `start'
        30: from /usr/lib/ruby/2.7.0/irb.rb:471:in `run'
        29: from /usr/lib/ruby/2.7.0/irb.rb:471:in `catch'
        28: from /usr/lib/ruby/2.7.0/irb.rb:472:in `block in run'
        27: from /usr/lib/ruby/2.7.0/irb.rb:537:in `eval_input'
        26: from /usr/lib/ruby/2.7.0/irb/ruby-lex.rb:150:in `each_top_level_statement'
        25: from /usr/lib/ruby/2.7.0/irb/ruby-lex.rb:150:in `catch'
        24: from /usr/lib/ruby/2.7.0/irb/ruby-lex.rb:151:in `block in each_top_level_statement'
        23: from /usr/lib/ruby/2.7.0/irb/ruby-lex.rb:151:in `loop'
        22: from /usr/lib/ruby/2.7.0/irb/ruby-lex.rb:154:in `block (2 levels) in each_top_level_statement'
        21: from /usr/lib/ruby/2.7.0/irb/ruby-lex.rb:182:in `lex'
        20: from /usr/lib/ruby/2.7.0/irb.rb:518:in `block in eval_input'
        19: from /usr/lib/ruby/2.7.0/irb.rb:704:in `signal_status'
        18: from /usr/lib/ruby/2.7.0/irb.rb:519:in `block (2 levels) in eval_input'
        17: from /usr/lib/ruby/2.7.0/irb/input-method.rb:294:in `gets'
        16: from /usr/lib/ruby/2.7.0/forwardable.rb:235:in `readmultiline'
        15: from /usr/lib/ruby/2.7.0/forwardable.rb:235:in `readmultiline'
        14: from /usr/lib/ruby/2.7.0/reline.rb:175:in `readmultiline'
        13: from /usr/lib/ruby/2.7.0/reline.rb:238:in `inner_readline'
        12: from /usr/lib/ruby/2.7.0/reline.rb:238:in `loop'
        11: from /usr/lib/ruby/2.7.0/reline.rb:239:in `block in inner_readline'
        10: from /usr/lib/ruby/2.7.0/reline.rb:270:in `read_io'
         9: from /usr/lib/ruby/2.7.0/reline.rb:270:in `loop'
         8: from /usr/lib/ruby/2.7.0/reline.rb:311:in `block in read_io'
         7: from /usr/lib/ruby/2.7.0/reline.rb:240:in `block (2 levels) in inner_readline'
         6: from /usr/lib/ruby/2.7.0/reline.rb:240:in `each'
         5: from /usr/lib/ruby/2.7.0/reline.rb:241:in `block (3 levels) in inner_readline'
         4: from /usr/lib/ruby/2.7.0/reline/line_editor.rb:820:in `input_key'
         3: from /usr/lib/ruby/2.7.0/reline/line_editor.rb:608:in `complete'
         2: from /usr/lib/ruby/2.7.0/irb/completion.rb:269:in `block in '
         1: from /usr/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:92:in `require'
/usr/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:92:in `require': cannot load such file -- rdoc (LoadError)
```

https://github.com/ruby/irb/commit/a2d299c2ac

* [ruby/irb] Suppress verbose messages in the parallel test

`:VERBOSE` flag needs to be set prior to `IRB::Irb.new`.

https://github.com/ruby/irb/commit/78604682d9

* [ruby/irb] SIGINT should raise Interrupt after IRB session

https://github.com/ruby/irb/commit/5832cfe75b

* [ruby/irb] Colorize `__END__` as keyword

https://github.com/ruby/irb/commit/9b84018311

* [ruby/irb] Add show_source command

https://github.com/ruby/irb/commit/108cb04352

* [ruby/reline] Reset @rest_height when clear screen

https://github.com/ruby/reline/commit/3a7019b0d5

* [ruby/irb] process multi-line pastes as a single entity

this allows pasting leading-dot chained methods correctly:

```ruby
class A
  def a; self; end
  def b; true; end
end

a = A.new

a
 .a
 .b
```

will properly return `true` instead of erroring on the `.a` line:

```
irb(main):001:1*     class A
irb(main):002:1*       def a; self; end
irb(main):003:0>     end
irb(main):004:0*
irb(main):005:0>     a = A.new
irb(main):006:0*
irb(main):007:0>     a
irb(main):008:0>      .a
irb(main):009:0>      .a
=> #
```

https://github.com/ruby/irb/commit/45aeb52575

* [ruby/irb] Add yamatanooroti test example

https://github.com/ruby/irb/commit/279155fcee

* [ruby/irb] Add test for multiline paste

https://github.com/ruby/irb/commit/e93c9cb54d

* [ruby/irb] Evaluate each toplevel statement

https://github.com/ruby/irb/commit/bc1b1d8bc3

* [ruby/irb] Version 1.3.5

https://github.com/ruby/irb/commit/22e2ddf715

* [ruby/reline] Version 0.2.5

https://github.com/ruby/reline/commit/22ce5651e5

Co-authored-by: Jeremy Evans 
Co-authored-by: Kazuhiro NISHIYAMA 
Co-authored-by: Takashi Kokubun 
Co-authored-by: Nobuyoshi Nakada 
Co-authored-by: Aleksandar Ivanov 
Co-authored-by: Koichi Sasada 
Co-authored-by: Cody Cutrer

irb: Define extension command on the given object

2020-12-20T10:35:59+00:00

irb: Define extension command only on the given object

2020-12-20T09:26:38+00:00

Not to interfer in class variables.

[ruby/irb] Add measure command

2020-12-20T07:23:59+00:00

You can use "measure" command to check performance in IRB like below:

  irb(main):001:0> 3
  => 3
  irb(main):002:0> measure
  TIME is added.
  => nil
  irb(main):003:0> 3
  processing time: 0.000058s
  => 3
  irb(main):004:0> measure :off
  => nil
  irb(main):005:0> 3
  => 3

You can set "measure :on" by "IRB.conf[:MEASURE] = true" in .irbrc, and, also,
set custom performance check method:

  IRB.conf[:MEASURE_PROC][:CUSTOM] = proc { |context, code, line_no, &block|
    time = Time.now
    result = block.()
    now = Time.now
    puts 'custom processing time: %fs' % (Time.now - time) if IRB.conf[:MEASURE]
    result
  }

https://github.com/ruby/irb/commit/3899eaf2e2

Separate `send` into `public_send` and `send`

2020-10-27T07:12:45+00:00

[ruby/irb] Suppress "method redefined" warning

2020-04-29T10:13:14+00:00

https://github.com/ruby/irb/commit/5f0aee56fa

[ruby/irb] Add irb_info command

2020-04-29T10:13:14+00:00

https://github.com/ruby/irb/commit/a6fe58e916

Fixed misspellings

2019-12-20T03:19:45+00:00

Fixed misspellings reported at [Bug #16437], for default gems.

Adjusted indents and supplied last commas

2019-08-28T07:08:14+00:00

Fixed unmatched indent of the closing bracket for
`:irb_current_working_workspace`, and adjusted following elements.

Removed math mode from irb.

2017-04-20T09:11:36+00:00

  mathn is deprecated from Ruby 2.2.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58415 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ruby.git/lib/irb/extend-command.rb, branch v3_0_4