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. -- https://bugs.ruby-lang.org/