From: retro via ruby-core <ruby-core@...>
Date: 2025-05-24T00:42:36+00:00
Subject: [ruby-core:122266] [Ruby Bug#21323] irb fails to start with Namespace

Issue #21323 has been updated by retro (Josef ��im��nek).


Have this been fixed already?

```
[retro@retro2  ~]��� ruby -v
ruby 3.5.0dev (2025-05-23T23:31:28Z master 87d340f0e1) +PRISM [x86_64-linux]
[retro@retro2  ~]��� RUBY_NAMESPACE=1 irb
/home/retro/.rubies/ruby-master/bin/ruby: warning: Namespace is experimental, and the behavior may change in the future!
See doc/namespace.md for known issues, etc.
irb(main):001> n = Namespace.new
=> #<Namespace:3,user,optional>
```

----------------------------------------
Bug #21323: irb fails to start with Namespace
https://bugs.ruby-lang.org/issues/21323#change-113408

* Author: Eregon (Benoit Daloze)
* Status: Open
* ruby -v: ruby 3.5.0dev (2025-05-10T07:50:29Z namespace-on-read-.. bd4f57f96b) +PRISM [x86_64-linux]
* Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN
----------------------------------------
```
$ irb
irb(main):001> 6 * 7
=> 42

$ RUBY_NAMESPACE=1 irb
/home/eregon/prefix/ruby-master/bin/ruby: warning: Namespace is experimental, and the behavior may change in the future!
See doc/namespace.md for know issues, etc.
/home/eregon/prefix/ruby-master/lib/ruby/3.5.0+0/did_you_mean/core_ext/name_error.rb:11: warning: irb is not part of the default gems since Ruby 3.5.0. Install irb from RubyGems.
/home/eregon/prefix/ruby-master/lib/ruby/3.5.0+0/did_you_mean/core_ext/name_error.rb:11: warning: irb is not part of the default gems since Ruby 3.5.0. Install irb from RubyGems.
<internal:/home/eregon/prefix/ruby-master/lib/ruby/3.5.0+0/rubygems/core_ext/kernel_require.rb>:141:in 'Kernel#require': cannot load such file -- irb (LoadError)
Did you mean?  erb
	from <internal:/home/eregon/prefix/ruby-master/lib/ruby/3.5.0+0/rubygems/core_ext/kernel_require.rb>:141:in 'Kernel#require'
	from /home/eregon/prefix/ruby-master/lib/ruby/gems/3.5.0+0/gems/irb-1.15.2/exe/irb:7:in 'Namespace::Loader#require'
	from /home/eregon/prefix/ruby-master/lib/ruby/gems/3.5.0+0/gems/irb-1.15.2/exe/irb:7:in '<top (required)>'
	from /home/eregon/.rubies/ruby-master/bin/irb:25:in 'Kernel#load'
	from /home/eregon/.rubies/ruby-master/bin/irb:25:in 'Namespace::Loader#load'
	from /home/eregon/.rubies/ruby-master/bin/irb:25:in '<main>'
<internal:/home/eregon/prefix/ruby-master/lib/ruby/3.5.0+0/rubygems/core_ext/kernel_require.rb>:136:in 'Kernel#require': cannot load such file -- irb (LoadError)
Did you mean?  erb
	from <internal:/home/eregon/prefix/ruby-master/lib/ruby/3.5.0+0/rubygems/core_ext/kernel_require.rb>:136:in 'Kernel#require'
	from /home/eregon/prefix/ruby-master/lib/ruby/gems/3.5.0+0/gems/irb-1.15.2/exe/irb:7:in 'Namespace::Loader#require'
	from /home/eregon/prefix/ruby-master/lib/ruby/gems/3.5.0+0/gems/irb-1.15.2/exe/irb:7:in '<top (required)>'
	from /home/eregon/.rubies/ruby-master/bin/irb:25:in 'Kernel#load'
	from /home/eregon/.rubies/ruby-master/bin/irb:25:in 'Namespace::Loader#load'
	from /home/eregon/.rubies/ruby-master/bin/irb:25:in '<main>'
zsh: exit 1     RUBY_NAMESPACE=1 irb
```



-- 
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