[ruby-core:102280] [Ruby master Bug#17589] Pathname#each_line with chomp option raises TypeError

Issue #17589 has been reported by scivola20 (sciv ola).

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Bug #17589: Pathname#each_line with chomp option raises TypeError
https://bugs.ruby-lang.org/issues/17589

* Author: scivola20 (sciv ola)
* Status: Open
* Priority: Normal
* ruby -v: ruby 3.0.0p0 (2020-12-25 revision 95aff21468) [x86_64-darwin17]
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN
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With Ruby 3.0,

```rb
require "pathname"
Pathname(__FILE__).each_line(chomp: true){ }
```

causes

> no implicit conversion of Hash into Integer (TypeError)

In case of Ruby 2.7.2, it does not raise but diplay:

> warning: Using the last argument as keyword parameters is deprecated




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