Hi Dave,
Thank you for your explanation :-)

But I still want to know what regex twitter is used to recognize
@username ,
because the regex used to recognize @username in dabr doesn't work
exactly same as twitter.com.

On Dec 2, 6:24 pm, Dave Sherohman <d...@fishtwits.com> wrote:
> On Tue, Dec 01, 2009 at 07:14:25PM -0800, yegle wrote:
> > I have a saved search which is "yegle -...@yegle" to track tweets which
> > intends to mention me, I found some tweets with format described below
> > can be found using "yegle -...@yegle" but also appear in my
> > reply_timeline:
> > Here is sometext and then w...@yegle (no space before the @ )
> > So my question is, what regex does twitter use to recognize @username
> > in tweets?
> You're imagining that this is being handled in a more complex (more
> intelligent?) way than it actually is.  The search function operates on
> complete words only, with no special-case handling for @usernames.
> "w...@yegle" doesn't match "@yegle" for the same reason it doesn't match
> "it": they're substrings embedded within the word, not the complete
> word.
> --
> Dave Sherohman

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