[perl #41460] spurious syntax error when taking keys of anonymous hash

On Wed Feb 07 12:56:19 2007, davidnicol@gmail.com wrote:
> On 2/7/07, Ronald J Kimball <rjk-perl-p5p@tamias.net> wrote:
> > By the way, what's happening is that %{{} is parsed as the hash
> named {, so
> > the second } is indeed unmatched.
> >
> > Adding whitespace in the middle also works:
> > perl -we 'print keys %{{ }}'
> >
> > Ronald
> 
> Is that not a bug? 

It is not a bug.

> What exactly are the rules for when bare \S+
> inside curlies
> gets quoted?  I have been under the impression that \w+ was required,
> which
> '{' does not satisfy.
> 

\w+ is not required in an unquoted hash subscript if it is one character
long.

This is necessary for $${@}, etc.

• [perl #41460] spurious syntax error when taking keys of anonymous hash by Father Chrysostomos via RT