[ruby-core:122419] [Ruby Feature#21335] Namespaces should be present in the backtrace
From:
"matz (Yukihiro Matsumoto) via ruby-core" <ruby-core@...>
Date:
2025-06-05 04:24:24 UTC
List:
ruby-core #122419
Issue #21335 has been updated by matz (Yukihiro Matsumoto).
I'd like to keep this issue pending until we provide high level API (maybe Package). See #21385)
Matz.
----------------------------------------
Feature #21335: Namespaces should be present in the backtrace
https://bugs.ruby-lang.org/issues/21335#change-113599
* Author: tenderlovemaking (Aaron Patterson)
* Status: Open
----------------------------------------
Namespaces can call in to other name spaces. I think it might be helpful if namespace information is in the backtrace.
For example:
```ruby
File.binwrite "foo.rb", <<-eorb
class Foo
def self.test(ns1, ns2, count)
if count == 0
puts caller
else
if count % 2 == 0
ns1::Foo.test(ns1, ns2, count - 1)
else
ns2::Foo.test(ns1, ns2, count - 1)
end
end
end
end
eorb
ns1 = Namespace.new
ns1.load "foo.rb"
ns2 = Namespace.new
ns2.load "foo.rb"
ns1::Foo.test(ns1, ns2, 10)
```
The output is like this:
```
See doc/namespace.md for known issues, etc.
/Users/aaron/git/ruby/exe/ruby: warning: Namespace is experimental, and the behavior may change in the future!
See doc/namespace.md for known issues, etc.
/Users/aaron/git/ruby/foo.rb:9:in 'test'
/Users/aaron/git/ruby/foo.rb:7:in 'test'
/Users/aaron/git/ruby/foo.rb:9:in 'test'
/Users/aaron/git/ruby/foo.rb:7:in 'test'
/Users/aaron/git/ruby/foo.rb:9:in 'test'
/Users/aaron/git/ruby/foo.rb:7:in 'test'
/Users/aaron/git/ruby/foo.rb:9:in 'test'
/Users/aaron/git/ruby/foo.rb:7:in 'test'
/Users/aaron/git/ruby/foo.rb:9:in 'test'
/Users/aaron/git/ruby/foo.rb:7:in 'test'
./test.rb:23:in '<main>'
```
`Foo.test` alternates between namespaces when calling a method, but you can't tell from the backtrace. I think we should include namespaces in the backtrace.
--
https://bugs.ruby-lang.org/
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