Re: RegExp: match everything except a certain string

[Lennart Borgman (gmail)]

Sven Bretfeld wrote:
> Hello Andreas
>
> Andreas Röhler <andreas.roehler@online.de> writes:
>
> > >  author = {somename},
> > >  editor = {},
> > >  title = {sometitle},
> > >  subtitle = {},
> > >  series = {},
> > >  url = {}
> > >
> > > I want to find a regexp that matches every line with empty {} except
> > > of the "subtitle line". I've come that far:
> > Got it with:
> >
> > [^s]?[^u]?[^b]?[^t]?[^i]?[^t]?[^l]?[^e] = {},?$
> >
> > Please don't ask why :)
>
> That's working. Thanks. (I don't ask.)
>
> > Anyway--you will know that and it's not the precise
> > answer-- it might be useful to point at
> >
> > M-x shell-command-on-region
> >
> > grep {} | sed /subtitle/d
> >
> > as an easy-to-use solution.
>
> It's a good idea to use a sed pipe. But it doesn't matter how much
> there is to type, since I need the expression for a function. So I
> only have to type it once.

Then it is probably much easier to use two step aproach:

1) use a simpler regexp
2) test if "subtitle" was in the match