diff --git a/util/tabify-changes b/util/tabify-changes
new file mode 100644
index 0000000000..418398fc10
--- /dev/null
+++ b/util/tabify-changes
@@ -0,0 +1,22 @@
+expand ${1} |
+sed \
+-e 's/^\([1-9][0-9][0-9][0-9][0-9][0-9]\.\) */\1	/' \
+-e 's/^\([1-9][0-9][0-9][0-9][0-9]\.\) */\1	/' \
+-e 's/^\([1-9][0-9][0-9][0-9]\.\) */\1	/' \
+-e 's/^\( [1-9][0-9][0-9]\.\) */\1	/' \
+-e 's/^\(  [1-9][0-9]\.\) */\1	/' \
+-e 's/^\(   [1-9]\.\) */\1	/' \
+-e 's/\(	\[.\]\) */\1		/' \
+-e 's/\(	\[..\]\) */\1		/' \
+-e 's/\(	\[...\]\) */\1		/' \
+-e 's/\(	\[....\]\) */\1		/' \
+-e 's/\(	\[.....\]\) */\1		/' \
+-e 's/\(	\[......\]\) */\1	/' \
+-e 's/\(	\[.......\]\) */\1	/' \
+-e 's/\(	\[........\]\) */\1	/' \
+-e 's/\(	\[.........\]\) */\1	/' \
+-e 's/\(	\[..........\]\) */\1	/' \
+-e 's/\(	\[...........\]\) */\1	/' \
+-e 's/\(	\[............\]\) */\1	/' \
+-e 's/[ 	]*$//' |
+unexpand