> > I recently realized that the `become` action leaves behind temporary files

Could you clarify which temporary files you mean? I wonder if it's a bug of fzf.

The /tmp/fzf-{temp,proxy)-* files. I also thought that it might be bug of fzf, but after looking briefly at the code, I saw the comment below and figured that it's probably not, so I didn't look more into it:

Originally posted by @bitraid in #4280 (comment)