On Fri, Aug 06, 2010 at 07:50:37AM +0200, Christian Brabandt wrote:
> On Fri, August 6, 2010 5:05 am, Yue Wu wrote:
> > Create a func:
> >
> > func! Ywtest()
> > redraw | let txt = matchstr(input("Foo: "), '^\s*\zs.*')
> > while txt == ''
> > let txt = matchstr(input("Foo: "), '^\s*\zs')
> > endwhile
> > endfunc
> >
> > Run it: :call Ywtest()
> >
> > Then in the first prompt, hit enter to enter a blank string, then func
> > will
> > prompt again, now input some string, hit enter again, you will find the
> > while
> > loop will nerver end from now on.
> >
> > If I remove the matchstr() part, func runs well, what's wrong with it?
>
> Because your pattern always matches and since you are using \zs at the
> end of your pattern, matchstr() will always return the empty string.
>
Thank you, I forgot '.*' after '\zs' ;p
--
Regards,
Yue Wu
Key Laboratory of Modern Chinese Medicines
Department of Traditional Chinese Medicine
China Pharmaceutical University
No.24, Tongjia Xiang Street, Nanjing 210009, China
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