A small script to easily use Git with `latexdiff`

git-latexdiff.sh

#!/bin/bash

# Special flag to clean up the mess
# Example: ./git-latexdiff.sh -c
# Deletes all the files created by this script; be careful, it will delete
# files with the names `old.tex` and `diff.tex` even if they weren't created
# by this script.
if [[ "$1" == "-c" ]] ; then
    latexmk -C diff.tex
    rm old.tex diff.tex
    exit 0
fi

# Otherwise...
# First arg is filename (e.g., main.tex)
# Second arg is git revision (e.g., HEAD^)
# Example: ./git-latexdiff.sh my_thesis.tex HEAD
# This creates a diff PDF between your current file and the last time you made a commit.

if [[ -z "$2" ]] ; then
    echo 'Error: Two few arguments!'
    exit 1
fi

git show $2:$1 > old.tex
latexdiff old.tex $1 > diff.tex
latexmk diff