oh-my-zsh/plugins/fancy-ctrl-z/README.md

Use Ctrl-Z to switch back to Vim

I frequently need to execute random command in my shell. To achieve it I pause Vim by pressing Ctrl-z, type command and press fg to switch back to Vim. The fg part really hurt sme. I just wanted to hit Ctrl-z once again to get back to Vim. I could not find a solution, so I developed one on my own that works wonderfully with ZSH

Source: http://sheerun.net/2014/03/21/how-to-boost-your-vim-productivity/

Credits:

• original idea by @sheerun
• added to OMZ by @mbologna