Issue #13979 has been updated by asterite (Ary Borenszweig).
Thank you nobu, I didn't know about Binding#local_variable_get
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Feature #13979: Ruby doesn't give error on keyword arguments that you can't refer to
https://bugs.ruby-lang.org/issues/13979#change-67093
* Author: asterite (Ary Borenszweig)
* Status: Rejected
* Priority: Normal
* Assignee:
* Target version:
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You can't use keywords as names for normal arguments. For example all of these give a syntax error:
~~~ruby
def foo(class); end
def foo(def); end
def foo(if); end
# ... other keywords too
~~~
The reason is that there's no way to refer to these names because they are keywords.
However, we can use these names for keyword arguments. All of these work:
~~~ruby
def foo(class: 1); end
def foo(def: 1); end
def foo(if: 1); end
~~~
But I think they should give a syntax error, because for example I can't refer to the argument "class" in the first line (same reason why the first snippet gives a syntax error).
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