git: use delta as pager if available

.config/git/config

@@ -3,6 +3,13 @@
 	email = thatsmydoing@gmail.com
 [core]
 	autocrlf = input
+[delta]
+	features = side-by-side line-numbers decorations
+	whitespace-error-style = 22 reverse
+[delta "decorations"]
+	commit-decoration-style = bold yellow box ul
+	file-style = bold yellow ul
+	file-decoration-style = none
 [color]
 	ui = true
 [diff]

.zsh/config.zsh

@@ -70,3 +70,7 @@ alias ssh="TERM=xterm-256color ssh"
 
 export EDITOR=vim
 path=(~/.local/bin $path)
+
+if whence -p delta > /dev/null; then
+  export GIT_PAGER=delta
+fi