Re: [PBML] Quoting hash keys changes things sometimes

[Chas. Owens]

On Sat, Nov 15, 2008 at 17:42, Jenda Krynicky <[EMAIL PROTECTED]> wrote:
snip
> The rule for automatic quoting within $hash{...} is "if it looks like
> word, it doesn't have to be quoted". And - is not in the list of word
> characters as far as Perl is concerned.
snip

Not exactly.  A hyphen is allowed at the start of a bareword as long
as it doesn't look like it is part of an expression.  So

$foo = -foo;

is the same as

$foo = '-foo';

Another oddity are ::

$foo = Does::Not::Exist;

is the same as

$foo = 'Does::Not::Exist';

And, of course, all of the characters in \w work

$foo = foo_bar_123;

is the same as

$foo = 'foo_bar_123';

There may be other characters that are allowed, but that is the extent
of my knowledge.

-- 
Chas. Owens
wonkden.net
The most important skill a programmer can have is the ability to read.

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