1 files changed, 3 insertions, 1 deletions

diff --git a/makefile b/makefile
index 6019fe2..0844d8f 100644
--- a/makefile
+++ b/makefile
@@ -3,7 +3,9 @@ all: clean
 clean:
         rm -rf .backup
         find -iname "*~" | xargs rm -rf
-        rsync -avPr --files-from=files.txt . .backup
+        find ./* -type f | grep 'makefile\|md$$\|tex$$' > ls-R
+        rsync -avPr --files-from=ls-R . .backup
+        cp ls-R .backup
         rm -rf *
         cp -p -r .backup/* .
         rm -rf .backup