[CS-FSLUG] regexp help

[Eduardo Sanchez]

Tim, Thanks!!!
I'm going to try these.

Eduardo

On Thursday 11 November 2004 20:55, Tim Young wrote:
> There are a zillion ways to do this.  If all hyphens are used this 
way, the
> simplest is:
> 
> cat [myfile] | sed 's/-/--/g'
> 
> If you are in vi., the same command is:
> :%s/-/--/
> 
> But if you need to do it only when there is a worda-wordb, you can do 
this:
> cat [myfile] | sed 's/([a-Z0-9][a-Z0-9]*)-([a-Z0-9]
[a-Z0-9]*)/\1--\2/g'
> 
> and in vi:
> :%s/([a-Z0-9][a-Z0-9]*)-([a-Z0-9][a-Z0-9]*)/\1--\2/g
> 
> I believe these work.  I am away from my linux box at the moment...  :
(
> 
>     - Tim
> 
> Eduardo Sanchez wrote:
> 
> > People, I'm stuck in a rut, and I need the help of the regexp 
wizards
> > here.
> >
> > I have some strings as follows:
> >
> > wordA-wordB
> >
> > That is, two words (or numbers, or practically any ASCII char) 
joined by
> > a hyphen.
> >
> > What I would need to do is to perform a search and replace so that 
the
> > above string is changed to:
> >
> > wordA--wordB
> >
> > that is, I need to search instances of a single hyphen and replace 
it
> > with a double hyphen. I know there's some regexps I could use, but 
now
> > I'm stuck and I don't know even where to begin.
> >
> > Any help will be greatly appreciated.
> >
> > Thanks in advance,
> >
> > Eduardo
> >
> > --
> > Prof. Eduardo Sanchez
> > Asuncion, Paraguay, South America
> > --------------------------------------------------------------
> >  For "Is" and "Is-not" though with Rule and Line
> >  And "UP-AND-DOWN" by Logic I define,
> >    Of all that one should care to fathom, I
> >  was never deep in anything but--Wine.
> >
> >  -- The Rubaiyat of Omar Khayyam
> >
> >
> > --------------------------------------------------------------
> >
> > _______________________________________________
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> > Christiansource at ofb.biz
> > http://cs.uninetsolutions.com
> 
> 
> _______________________________________________
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> http://cs.uninetsolutions.com
> 

-- 
Prof. Eduardo Sanchez
Asuncion, Paraguay, South America
--------------------------------------------------------------
 The Moving Finger writes; and, having writ,
 Moves on: nor all thy Piety nor Wit
   Shall lure it back to cancel half a Line,
 Nor all thy Tears wash out a Word of it.

	-- The Rubaiyat of Omar Khayyam
	   

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