From: "nobu (Nobuyoshi Nakada)" <nobu@...>
Date: 2013-12-16T12:45:01+09:00
Subject: [ruby-core:59128] [ruby-trunk - Bug #9251][Feedback] ! operator has	lower precedence than = in an assignment expression


Issue #9251 has been updated by nobu (Nobuyoshi Nakada).

Status changed from Open to Feedback
Priority changed from Normal to Low

Then do you want it be a syntax error?
Assignment to a negated expression makes no sense.
Or can you elaborate its semantics?

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Bug #9251: ! operator has lower precedence than = in an assignment expression
https://bugs.ruby-lang.org/issues/9251#change-43690

Author: rits (First Last)
Status: Feedback
Priority: Low
Assignee: 
Category: 
Target version: 
ruby -v: ruby 2.0.0p353 (2013-11-22 revision 43784) [i686-linux]
Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN


irb(main):001:0> !a = 1
(irb):1: warning: found = in conditional, should be ==
=> false
irb(main):002:0> a
=> 1

! is supposed to have higher precedence than =, so !a = 1 should be (!a) = 1, and thus an error, not !(a = 1) 



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