Wrong file path parsing in Windows with gx

[scarbajali]

In Windows:

![newfile](img/newfile.png)
![newfile](img\newfile.png)

If put the cursor in the first line and press gx, the file is not opened. However, if I do the same in the second line, the file is opened.

It looks like there is an issue in the path parsing, as Windows expects \ instead of / for folder separators.