[Help-bash] How to set the terminal to vim?

[Peng Yu]

I see the following warning. It is because the bash script takes the
stdin. Does anybody know how to make vim get back the stdin? Thanks.

$ cat main.sh
#!/usr/bin/env bash

while read -r -d $'\n' line
do
  echo "$line"
done
vim main.sh
$ ./main.sh  </dev/null
Vim: Warning: Input is not from a terminal


-- 
Regards,
Peng