From: "qnighy (Masaki Hara)" <noreply@...>
Date: 2022-06-28T03:38:50+00:00
Subject: [ruby-core:109076] [Ruby master Bug#18878] parse.y: Foo::Bar {} is inconsistently rejected

Issue #18878 has been updated by qnighy (Masaki Hara).


> Is there a more descriptive error message, or is `SyntaxError` the only output provided?

This is the actual error message:

```
% ruby -e 'Foo::Bar {}'
-e:1: syntax error, unexpected '{'
Foo::Bar {}
```

----------------------------------------
Bug #18878: parse.y: Foo::Bar {} is inconsistently rejected
https://bugs.ruby-lang.org/issues/18878#change-98222

* Author: qnighy (Masaki Hara)
* Status: Open
* Priority: Normal
* ruby -v: ruby 3.1.2p20 (2022-04-12 revision 4491bb740a) [x86_64-linux]
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------
The following source doesn't parse:

```ruby
Foo::Bar {}
```

despite the following:

```ruby
bar           # local variable or method call
Bar           # constant
bar()         # method call
Bar()         # method call
bar {}        # method call
Bar {}        # method call
bar() {}      # method call
Bar() {}      # method call
Foo::bar      # method call
Foo::Bar      # constant
Foo::bar()    # method call
Foo::Bar()    # method call
Foo::bar {}   # method call
# Foo::Bar {} # SyntaxError
Foo::bar() {} # method call
Foo::Bar() {} # method call
```

Especially considering `Bar {}`, this looks like a missing implementation rather than an intentional behavior.



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