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Postings from May 2010
On Tue, 18 May 2010, Eric Brine wrote:
> On Tue, May 18, 2010 at 4:04 PM, demerphq <demerphq@gmail.com> wrote:
> > Basically we only have to worry about 'l' because of 'le', and 'f'
> > because of 'if'. Any others?
> >
>
> Not "if". it's already a syntax error because "i" is a valid option.
>
> Any of the following immediately following the delimiter are currently
> valid, but will become a syntax error (e.g. /foo/le+1) or different valid
> code (e.g. /foo/lt+1):
>
> - unless & until from /u
> - le & lt from /l
> - [none] from /t
>
> We're precluded from using these:
>
> - /a (and)
> - /f (for, foreach)
> - /n (ne)
> - /w (when, while)
>
> We don't have to worry about these:
>
> - cmp
> - eq
> - if
> - ge & gt
> - or
> - xor
> - builtin function
> - sub names
> - barewords
Yes, but why bother? What is wrong with your previous suggestion to only allow
the new modifiers after a
use 5.014;
That lets us pick the letters based on mnemonic value instead of having to
work around some obscure edge cases. And the code using the new letters
will not work on earlier Perl versions anyways, so having the "use 5.014"
in there is a good idea anyways.
This will also allow to us to turn any currently unused modifiers into syntax
errors right away for all 5.14+ code as well without breaking any compatibility.
What's not to like?
Cheers,
-Jan
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