'gd' does not support git move/rename actions

[carlfriedrich]

Check list

• I have read through the README
• I have the latest version of forgit
• I have searched through the existing issues

Environment info

• OS
  • Linux
  • Mac OS X
  • Windows
  • Others:
• Shell
  • bash
  • zsh
  • fish

Problem / Steps to reproduce

The forgit::diff function aka gd does not support git move or rename actions. Minimal reproducible example:

mkdir myrepo
cd myrepo
git init
echo "wow" > foo.txt
git add foo.txt
git commit -m "Commit 1"
git mv foo.txt bar.txt
echo "oh" > baz.txt
git add baz.txt

Calling gd --staged on this repo shows the following:

Obviously the output of git diff --name-status is not correctly parsed.

[carlfriedrich]

@wfxr I made PR #189 to fix this. Please let me know if it can be merged.