Re: grepable output bug

[Michael Pattrick <mpattrick () rhinovirus org>]

On Wed, Jan 21, 2009 at 12:42 AM, MadHat Unspecific
<madhat () unspecific com> wrote:
>        p = grepvers;
>        while((p = strchr(p, ','))) {
>          p++;
>        }
>
> This time, if we match a ',' we just move to the next character in p (p++;)
> rather than replacing it with something else.  At least that is what I think
> it does.  I am a perl programmer by day, php by night and I hack C/C++ when
> necessary, so I could be wrong, but it does work.

Hey MadHat,

That is exactly, what you are doing, but that wont change the state of
the string. You are simply moving where the pointer is pointing too.
If you want to erase all commas without replacing them with anything
you would have to do something like this:

p = grepvers;
  {
char * p2 = grepvers;

while(*p != NULL){
  if ( *p != ',' ){
    *p2 = *p;
    p2++;
  }
  p++;
}
  }

Although this is just an ugly spaghetti string hack.

-- 
Michael Pattrick
http://www.rhinovirus.org/math

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