From: "Cameron, Gemma (UK)" <Gemma.Cameron@...>
Date: 2006-10-11T21:59:40+09:00
Subject: Re: scanning strings, backward?


I think Bil just wants to remove part of the line rather than all of it:

 >  3) Remove /dt/i

i.e. 
line.gsub!(/\/dt\/i/, '')

Using String::gsub as suggested by Vidar

Gem

-----Original Message-----
From: M. Edward (Ed) Borasky [mailto:znmeb@cesmail.net] 
Sent: 11 October 2006 13:50
To: ruby-talk ML
Subject: Re: scanning strings, backward?

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Bil Kleb wrote:
> Hi,
> 
> I would like to automate a code cleanup task which involves finding 
> warning messages like,
> 
>  Warning: ../../LibF90/bc_inviscid.f90, line 1707:
>   DT explicitly imported into BC_INVISCID_FLUX but not used  detected 
> at BC_INVISCID_FLUX@<end-of-statement>
> 
> and removing the offending unused import.
> 
> So, the tasks are roughly,
> 
>  1) Goto line 1707 of the file
>  2) Search backward until line.match /\Wdt\W/i
>  3) Remove /dt/i
> 
> I'm stuck on an elegant, i.e., Ruby, way to do the first two steps.  
> Please point me toward the glittering light.
> 
> Thanks,
> --
> Bil Kleb
> http://fun3d.larc.nasa.gov

Wait a minute ... is the file you're editing always a Fortran source?
Why not just comment out the offending line rather than removing it?
Otherwise, removing a line changes the position number of every line
following it.
> 
> 






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