Newbie: Error parsing csv file with very long lines

[salvari via Digitalmars-d-learn]

Hello all!

I'm trying to read a csv file (';' as separator) with very long 
lines.

It seems to be really simple, I read the columns name with no 
problem. But as soon as the program parses the first line of 
data, the array containing the columns names seems to be 
overwrited.

I'm using dmd: DMD64 D Compiler v2.071.0

My code:

import std.stdio;
import std.algorithm;
import std.array;

char[][] columns;


void main() {
  LINE:foreach(line; stdin.byLine()){
     if(line.startsWith("Interfaz")){
       writeln("IN HERE");
       columns = line.split(";");
       writeln(columns);               // Everything seems to be ok
       continue;
     } else{
       auto linedata = line.split(";");
       writefln("My line: %s", line);        // Fine.
       writefln("LineData: %s", linedata);   // Fine. Line data is 
ok
       writefln("Columns: %s", columns);     // Wrong!!! columsn 
array
                                             // contains garbage 
data
                                             // from linedata
     }
   }
}