From: merch-redmine@...
Date: 2019-07-09T16:53:56+00:00
Subject: [ruby-core:93644] [Ruby master Bug#10463] :~@ and :!@ are not	parsed correctly

Issue #10463 has been updated by jeremyevans0 (Jeremy Evans).


nobu (Nobuyoshi Nakada) wrote:
> jeremyevans0 (Jeremy Evans) wrote:
> > nobu (Nobuyoshi Nakada) wrote:
> > > If `:!@` and `:!`  are different things, also `!foo` and `foo.!` are different things.
> > 
> > I don't believe that is true.  With the above patch:
> 
> Sorry, forgot `@`, I wanted to mean `!foo` and `foo.!@`.

Well, `foo.!@` would be a syntax error with the patch.  Is there a reason other than backwards compatibility to keep this automatic aliasing of `!@` to `!` and `~@` to `~`?  If not, maybe we could deprecate this in 2.7 and remove it in Ruby 3 (if matz approves).

----------------------------------------
Bug #10463: :~@ and :!@ are not parsed correctly
https://bugs.ruby-lang.org/issues/10463#change-79252

* Author: sawa (Tsuyoshi Sawada)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: 2.1.4
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN
----------------------------------------
The at mark in literal symbols `:~@` and `:!@` are ignored.

~~~ruby
:~@  # => :~
:!@  # => :!
~~~



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