How to cancel a copy operation in ranger file manager

Here is a tricky way to do this, and this may not always work if they change their code (and there could be cases where restarting ranger is better/safer).

rc.conf

In ranger, assuming you have a custom rc.conf in ~/.config/ranger/rc.conf, type:

:eval fm.source(fm.confpath('rc.conf'))

I tested this by changing set draw_borders true/false in ~/.config/ranger/rc.conf.

rifle.conf

In ranger, assuming you have a custom rifle.conf in ~/.config/ranger/rifle.conf, type:

:eval fm.rifle.reload_config()

Note that this was tested with the latest Git commits.

I use ranger too, and vim.

Try env EDITOR=vim ranger then try out E option to open an editor for the file. If it worked, then the changes are not working for you for either of the two reasons.

1. You forgot to source .bashrc after editing it with export EDITOR=vim change.
2. You might be using another shell

For scenario one, just do a source ~/.bashrc before starting ranger or open another shell. For later you want to find out the shell that you are using and edit the proper environment file for it.