From e0c77f60d81f5444e158036a72e4c74f139efee3 Mon Sep 17 00:00:00 2001
From: Mikhail Titov <mlt@gmx.us>
Date: Thu, 12 May 2016 11:06:38 -0500
Subject: [PATCH 1/2] Support Emacs Org Mode based diffs

We load ~/.emacs as --batch implies -q
but some customization might be expected.

For the same reason something like --tmpdirprefix .
is necessary for .dir-locals.el to work.

Finally, if on Windows and using Chocolatey,
real emacs and not shim is neccesary
as shim doesn't wait for process completion.

path %ChocolateyInstall%\lib\emacs64\tools\emacs\bin;%PATH%
---
 git-latexdiff | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/git-latexdiff b/git-latexdiff
index f9cffff..dac37e0 100755
--- a/git-latexdiff
+++ b/git-latexdiff
@@ -431,6 +431,13 @@ check_knitr () {
     main="${main%\.*}.tex"
 }
 
+check_org () {
+    if test -z "$prepare_cmd"; then
+        prepare_cmd="emacs --batch --eval \"(load \\\"~/.emacs\\\")\" \"$main\" -f org-latex-export-to-latex --kill"
+    fi
+    main="${main%\.*}.tex"
+}
+
 log_cmd () {
     log=$1
     shift
@@ -463,6 +470,7 @@ ext=${main##*\.}
 case "$ext" in
     Rnw) check_knitr ;;
     Rtex) check_knitr ;;
+    org) check_org ;;
     *) ;;
 esac
 

From 028515df0efad4ea0c692bf5d8cceba123c81b79 Mon Sep 17 00:00:00 2001
From: Mikhail Titov <mlt@gmx.us>
Date: Thu, 12 May 2016 11:06:38 -0500
Subject: [PATCH 2/2] Check presence of original file, not tranformed before it
 happened

---
 git-latexdiff | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/git-latexdiff b/git-latexdiff
index dac37e0..e1e6d1a 100755
--- a/git-latexdiff
+++ b/git-latexdiff
@@ -466,6 +466,10 @@ if test -z "$main" ; then
     fi
 fi
 
+if test ! -r "$main" ; then
+    die "Cannot read $main."
+fi
+
 ext=${main##*\.}
 case "$ext" in
     Rnw) check_knitr ;;
@@ -474,10 +478,6 @@ case "$ext" in
     *) ;;
 esac
 
-if test ! -r "$main" ; then
-    die "Cannot read $main."
-fi
-
 verbose "Creating temporary directories"
 
 git_prefix=$(git rev-parse --show-prefix)