From: Xavier Noria <fxn@...>
Date: 2013-04-24T15:10:56+09:00
Subject: Re: what is the $- magic global?

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On Wed, Apr 24, 2013 at 7:51 AM, Nobuyoshi Nakada <lists@ruby-forum.com>wrote:

Xavier Noria wrote in post #1106724:
> > I believed ordinary variables had to be valid identifiers.
>
> Yes, it was a valid identifier, till now.


I mean, I believed that ordinary variables (the ones a user can define,
different from special-cased globals), had to have a valid identifier
following the dollar sign. I don't know, you can't assign to $| for example.

Or is that $- was special-cased by the parser as a side-effect, but still
had no special meaning so it was at the disposal of the user?

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<div dir=3D"ltr">On Wed, Apr 24, 2013 at 7:51 AM, Nobuyoshi Nakada <span di=
r=3D"ltr">&lt;<a href=3D"mailto:lists@ruby-forum.com" target=3D"_blank">lis=
ts@ruby-forum.com</a>&gt;</span> wrote:<div><br><div class=3D"gmail_extra">=
<div class=3D"gmail_quote">


<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">Xavier Noria wrote in post #1106724:<br>
<div>&gt; I believed ordinary variables had to be valid identifiers.<br>
<br>
</div>Yes, it was a valid identifier, till now.</blockquote><div><br></div>=
<div>I mean, I believed that ordinary variables (the ones a user can define=
, different from special-cased globals), had to have a valid identifier fol=
lowing the dollar sign. I don&#39;t know, you can&#39;t assign to $| for ex=
ample.</div>


<div><br></div><div>Or is that $- was special-cased by the parser as a side=
-effect, but still had no special meaning so it was at the disposal of the =
user?</div><div><br></div></div></div></div></div>

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