有人知道我为什么会得这种病以及如何预防吗？

#!/usr/bin/env zsh

setopt nullglob
setopt extendedglob

for file in **/*; do
  if file -b $file | grep -q "text"; then
    raw=$(<$file)

    # Remove trailing whitespace
    raw=${raw//[[:blank:]]##$'\n'/$'\n'}

    # Other stuff like removing CR+LF works fine
    # raw=${raw//$'\r'}

    echo $file
    printf "%s\n\n" $raw > $file
  fi
done