From 391cf0df013f7e615d8f7e925d5e8b0ab7ac49f3 Mon Sep 17 00:00:00 2001
From: Matthieu Moy <Matthieu.Moy@imag.fr>
Date: Tue, 8 Apr 2014 11:45:57 +0200
Subject: [PATCH] Fix latexpand when the .tex file is not at the toplevel

We need to cd to the right directory so that relative \input statements work.
---
 git-latexdiff | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/git-latexdiff b/git-latexdiff
index 70e4717..d4b587f 100755
--- a/git-latexdiff
+++ b/git-latexdiff
@@ -455,8 +455,16 @@ fi
 # Create flattened documents and keep for debugging
 if test "$flatten" = 1; then
     verbose "Running latexpand"
-    latexpand old/"$main" > old/"$mainbase"-fl.tex "${latexpand[@]}" $oldbbl
-    latexpand new/"$main" > new/"$mainbase"-fl.tex "${latexpand[@]}" $newbbl
+    (
+	cd old/"$maindir" &&
+	latexpand "$mainbase".tex "${latexpand[@]}" $oldbbl
+    ) > old/"$mainbase"-fl.tex \
+	|| die "latexpand failed for old version"
+    (
+	cd new/"$maindir" &&
+	latexpand "$mainbase".tex "${latexpand[@]}" $newbbl
+    ) > new/"$mainbase"-fl.tex \
+	|| die "latexpand failed for new version"
     verbose_done
 
     verbose "Running latexdiff ${latexdiffopt[@]} old/"$mainbase"-fl.tex new/"$mainbase"-fl.tex > ./diff.tex"