136241Re: trouble with pattern, character collections
- Feb 19, 2013On Di, 19 Feb 2013, Christian Brabandt wrote:
> On Mo, 18 Feb 2013, Marc Weber wrote:Attached is an updated patch, that also prevents / matching 
> > I don't think that additional threads are going to help
> > There is an issue, and we should find a way to fix (IMHO).
> > Let me summarize again - and tell me if you feel differently.
> > Test cases:
> >  echo len(matchstr("\n",'\zs[^\n]\ze'))
> >  echo len(matchstr("\n","\\zs[^\n]\\ze"))
> > I expect both do the same, the difference is that the second as chr(10) in [^],
> > while the first has \n (which should be translated to chr(10).
> > However I obsorve that  returns 0 as expected , but  does return
> > 1, thus it matches \n even though I told Vim that I do not want to match
> > it. People told me this was because '.' is equal to [^\n].
> > Current situation: at least to be fixed
> > 1:
> > No matter whether '.' should behave like [^\n]
> >  and  should behave the same, right?
> > 2:
> > This should be documented.
> > (Do you all at least agree these two statments?)
> Bram, here is a patch, making [^\n] not match NL within the text and
> that also documents, that '.' matches CR and LF within the text.
> This makes both  and  behave the same and seems to better match
> the users expectations.
(a collation cannot be empty, so I think it should return an error and
other vi clones do, also grep and perl throw an error).
Included are tests as well.
Sprachlexikon-Namen: GERRITT - gemütl. Schritt-Tempo b. Pferden
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