Git diff side by side

How to get a side by side diff with git diff in the terminal.

Requirements:

• sdiff (from diffutils)
• colordiff

Place the following in your PATH (eg ~/bin/diffy):

#!/bin/sh
echo
echo Comparing: "$1 between $3 and $6"
echo
if stty >/dev/null 2>&1; then
  pager=${PAGER:-less -r}
else
  pager=cat
fi
C=$(stty size | cut -d' ' -f2)
D=$(expr $C / 2)
sdiff -W -w $C "$2" "$5" | colordiff | grep -E "^.{$D} *[|<>] *" -A 10 -B 10 -n | $pager

Then set the environment variable GIT_EXTERNAL_DIFF to point to it.

Example output: