Re: [libreoffice-users] Re: [Writer] Regular expressions

Gordom,

Below, Miroslaw mentioned grep. In Linux, you can achieve your goal by 
typing something like the following:

    grep --extended-regexp "^Set" input.txt > output.txt

This gets the lines in input.txt that start with "Set" and writes these 
lines to output.txt.

You might not even have to type the "--extended-regexp" part.

Winston

On 01/08/2013 05:38 PM, Mirosław Zalewski wrote:
> Although you have solved your problem already by other means, but let's check
> other possibilities.
>
> On 08/01/2013 at 21:45, gordom <gordom1@wp.pl> wrote:
>
> > In "real" life :-) there are lines starting with letters also. Only
> > these with "Set:" at the beginning should be left, rest is going to be
> > deleted.
> By looking at this sample, I see three more patterns that could get work done.
> 1. It seems that only lower-case letters are in "Set", which is in lines you
> want preserve. So maybe looking for lines containing only numbers and upper-
> case letters will do the trick.
> 2. In this sample, spaces are only in lines you want to preserve. What about
> matching lines without whitespace characters?
> 3. It looks like colon happens only in lines you want to delete. Match lines
> without colons, maybe?
>
> > I'm surprised that there is no simple way to find everything except
> > "Set:.+$"
> Well, regexps are most often used in programming languages or tools like grep,
> where you can easily get "reverse match" mode (print everything that does NOT
> match). But LO is not programming language and it's simple regexp engine is
> simply not sophisticated enough in many cases.
>
> I have read somewhere on TDF wiki about incorporating mature regexp library in
> LO, but this idea was rejected due to portability issues. LO must run on
> Windows and OS X as well as on Linux, whereas library in question runs only on
> Linux.


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