Re: Formal Review of std.regex (FReD)

[Dmitry Olshansky]

On 12.10.2011 0:04, Jerry wrote:
I have 2 thoughts.
1) Minor doc typo:

Long form for hex notation should be \U00YYYYYY.

Yeah, \U it is.


2) Unicode set syntax

If you're going to provide unicode set support, why not use ICU syntax
rather than invent another one?

Looks like I was tricked by their technical standard then.
I can't immediately recall where this syntax was ever used but:
http://unicode.org/reports/tr18/#Subtraction_and_Intersection

The prime reason cited here is that e.g. '--' is (almost) unambigious 
with range notation '-' and also allows to skip [] where applicable
[\p{letter}--a-z] vs [[\p{letter}]-[a-z]].
Come to think of it '--' is cleaner in this case.

Jerry


--
Dmitry Olshansky