Here's a safe way to open what file thinks are text files in the current directory in vim. Of course, you can change vim to echo to just print the names.

#!/bin/bash

for f in *; do
   out=$(file "$f")
   [[ "${out#*: }" =~ ASCII ]] && text_files+=("$f")
done

vim "${text_files[@]}"

exit

Here's a safe way to open what file thinks are text files in the current directory in vim. Of course, you can change vim to echo to just print the names.

#!/bin/bash

for f in *; do
   out=$(file "$f")
   [[ "${out##*: }" =~ ASCII ]] && text_files+=("$f")
done

vim "${text_files[@]}"

exit

EDIT: use two # signs in the parameter expansion to handle filenames with a : in them.