Disable tab indentation and backslash after directory name

• Type of issue :
  • Feature request

I've been trying to port my exact ls config to colorls (I'd like to use colorls mainly because of the --sf option which lists files first). There are a few things that I haven't been able to reproduce:

1. is there a way to disable the tab (4 spaces) between the left edge and the first column?;
2. having disabled all the icons, how can I get the corrent number of columns? I disable the icons replacing them with two backslash characters, this gets rid of the icons but now it doesn't use all the columns it could;
3. is there a way to hide the backslash character after the directory names?

Here's the comparison between my ls and colorls.