Blames every line from the diff

git diff blame

#!/bin/bash
cur_file=
cur_commit=
cur_lines=
old_ifs=$IFS
IFS=$'\n'
for line in `git diff -U0 "$@"`; do
  case "${line}" in
    index*)
      # index 12ceb6c..899b332 100755
      cur_commit=`echo $line | sed -E 's/^[^\.]+\.\.([0-9a-fA-F]+).+$/\1/'`
      ;;
    diff*)
      # diff --git a/file_a b/file_b
      # handled below
      ;;
    @@*)
      # @@ -12,0 +13 @@ context
      cur_lines=`echo $line | sed -E 's/^@@[^+]+\+([0-9,]+) @@.+$/\1/'`
      # not sure how to integrate "${cur_commit}"
      #echo "'${cur_lines}' '${cur_file}' '${cur_commit}'"
      git blame -L "${cur_lines}" -- "${cur_file}" | cat
      ;;
    +++*)
      # +++ b/file_b
      cur_file=`echo $line | sed -E 's/^[+ ]+b\/(.+)$/\1/'`
      ;;
    ---*)
      # --- a/file_a
      ;;
    +*|-*)
      # ignore
      ;;
  esac
done
IFS=$old_ifs