Git diff: show only removed (not moved) lines

Question

Git diff has the terrific --color-moved option. So I see that Git can detect when lines are moved, but not actually removed.

I need to detect lines removed but not removed. Simply grepping the output of git diff for lines that start with - will not help because that will capture moved lines as well. Can we either:

1. Configure git diff to show only the removed lines, but not the moved lines?
2. Configure git diff --color-moved to use a different leading character for moved lines, so that we could grep for a leading - on the output to find the removed lines?
3. Grep the output of git diff --color-moved for the (default) red lines, as those are the removed lines?

Answer 1

A bit fragile but:

git diff --color-moved=plain --color=always |
perl -pe 's/^\e\[31m-/!/; s/\e\[[0-9;]*m//g'

• set moved lines to a different colour
• force colour even in pipes
• use Perl to:
  • replace the prefix character on deleted lines
  • remove the ANSI escape sequences