From: Jian Lin <winterheat@...>
Date: 2009-05-09T22:42:02+09:00
Subject: Re: converting UTF-8 to entities like &#x525B;

Rick Denatale wrote:
> On Sat, May 9, 2009 at 8:40 AM, Jian Lin <winterheat@gmail.com> wrote:
>> (newline, 0, etc)... but seems like there is no match
> I'm pretty sure that Robert used regexen as the geeky way of pluralizing 
> regex.
> 
> The unicode switch (a u regular expression option) forces the use of
> unicode to interpret the string being matched, otherwise it uses
> whatever the encoding of the source file containing the regular
> expression.
> 
> e.g. /./u
> 
> If you want . to match newlines you want the m (multi-line) option.
> Normally . will match anything BUT a new line, m changes this.
> 
> rb(main):001:0> "a\nb".match(/a.b/)
> => nil
> irb(main):002:0> "a\nb".match(/a.b/m)
> => #<MatchData:0x6a248>

aha... here i just want to match 4 bytes at a time, no matter what the 
bytes are.  Using "m" won't do it...  the "u" would be helpful if i 
match one UTF-8 character at a time and then process it... right now i 
actually convert it all at once to UTF-32 and then process it... so I 
wonder if there is a way to match 4 bytes at a time.

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