[ruby-core:95806] [Ruby master Bug#16344] Can be assigned to numbered parameter when after used _1
From:
manga.osyo@...
Date:
2019-11-12 00:28:47 UTC
List:
ruby-core #95806
Issue #16344 has been reported by osyo (manga osyo).
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Bug #16344: Can be assigned to numbered parameter when after used _1
https://bugs.ruby-lang.org/issues/16344
* Author: osyo (manga osyo)
* Status: Open
* Priority: Normal
* Assignee:
* Target version:
* ruby -v: ruby 2.7.0dev (2019-11-11T23:39:38Z trunk 2407e89725) [x86_64-linux]
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN
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## Expected behavior
```ruby
_1 = :local_variable
proc {
_1
# Error: Can't assign to numbered parameter _1
_1 = 42
}
```
## Actual behavior
```ruby
_1 = :local_variable
proc {
_1
# No error
_1 = 42
}
```
Cannot be assinged to numbered parameter from #16293.
However, can be assinged to numbered parameter if defined local variable _1 outside block.
I think this is a bug.
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