[Issue 18804] std.algorithm.mutation.copy puts whole source range into target range when it should put elements

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18804

--- Comment #2 from Ajieskola at gmail.com ---
Already being fixed? Thanks!

imports are, on top of file:

import std.stdio, std.file, std.conv, std.algorithm, std.range, std.string,
std.typecons, std.math, std.csv;

A few examples of correct lines from "in":

Kukat,Gif\Kukat\1_Tumma_patina\05_Ruusu_tu.gif,false,"0.07,0.18,0.0;
0.09,0.25,0.0"
Kukat,Gif\Kukat\1_Tumma_patina\06_Ruusu_tu.gif,false,"0.07,0.19,0.0;
0.1,0.28,0.0"
Kukat,Gif\Kukat\1_Tumma_patina\09_Ruusu_tu.gif,false,"0.1,0.4,0.0;
0.1,0.56,0.0"
Kukat,Gif\Kukat\1_Tumma_patina\10_Ruusukoynnos_tu.gif,false,"0.1,0.375,0.0"

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