git-sed command

git-sed

#!/bin/bash
set -euC
if [ "$#" -eq 0 ]; then
  echo 'git sed COMMAND [PATH [PATH[...]]]' >&2
  exit 1
fi

if which gsed > /dev/null; then
  SED=gsed # for macOS
else
  SED=sed
fi

CMD=(-e "$1")
shift

apply_sed() {
  f="$1"
}

while read -r f; do
  [ -f "$f" ] && [ ! -L "$f" ] && "$SED" -i "${CMD[@]}" "$f"
done < <(git ls-files -- "$@")