On Apr 13, 2007, at 20:09 , Jonathan Lang wrote:

What does pair notation buy us that quoted-postfix notation doesn't
already cover?

I don't think it does. What it does buy is that the *unquoted* notation works: the definition of Perl6's grammar turns out to lead to `-f' and `- f' parsing identically because tokens must be composed of characters all from the same group (e.g. alphanumeric, or punctuation, etc.), which causes problems. Larry's fix was to switch to adverbial form, and modify the way they were used to fit the adverbial paradigm.

brandon s. allbery [solaris,freebsd,perl,pugs,haskell] [EMAIL PROTECTED] system administrator [openafs,heimdal,too many hats] [EMAIL PROTECTED] electrical and computer engineering, carnegie mellon university KF8NH

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