From: "nobu (Nobuyoshi Nakada) via ruby-core" <ruby-core@...>
Date: 2023-09-15T05:03:10+00:00
Subject: [ruby-core:114770] [Ruby master Bug#19882] :$0x should be rejected

Issue #19882 has been updated by nobu (Nobuyoshi Nakada).


It's subtly intentional.

The former seemed better to me.

```
$ ruby -e '$01234'
-e:1: identifier $01234 is not valid to get
-e: compile error (SyntaxError)
```
```
$ ./ruby -e 'p :$01234'
-e:1: syntax error, unexpected integer literal, expecting end-of-input
$01234
  ^~~~
-e: compile error (SyntaxError)
```

"Then the symbol should not be quoted"?, maybe.

----------------------------------------
Bug #19882: :$0x should be rejected
https://bugs.ruby-lang.org/issues/19882#change-104610

* Author: mame (Yusuke Endoh)
* Status: Open
* Priority: Normal
* Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN
----------------------------------------
```
irb(main):001> :$0x
=> :"$0x"
```

Since `$0x` is not a valid global variable name, I think it should be rejected unless quotation marks are used.



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